Merge JDK-8200758-branch
authorherrick
Wed, 23 Oct 2019 14:01:17 -0400
branchJDK-8200758-branch
changeset 58764 015949faea55
parent 58763 bc43733cd5cf (current diff)
parent 58760 1f7f707c1aa9 (diff)
child 58791 fca9cb5f4953
Merge
test/jdk/java/math/BigInteger/DivisionOverflow.java
test/jdk/java/math/BigInteger/StringConstructorOverflow.java
test/jdk/java/math/BigInteger/SymmetricRangeTests.java
--- a/.hgtags	Wed Oct 23 13:53:41 2019 -0400
+++ b/.hgtags	Wed Oct 23 14:01:17 2019 -0400
@@ -591,3 +591,4 @@
 d29f0181ba424a95d881aba5eabf2e393abcc70f jdk-14+16
 5c83830390baafb76a1fbe33443c57620bd45fb9 jdk-14+17
 e84d8379815ba0d3e50fb096d28c25894cb50b8c jdk-14+18
+9b67dd88a9313e982ec5f710a7747161bc8f0c23 jdk-14+19
--- a/make/Bundles.gmk	Wed Oct 23 13:53:41 2019 -0400
+++ b/make/Bundles.gmk	Wed Oct 23 14:01:17 2019 -0400
@@ -50,6 +50,7 @@
 #     files or directories may contain spaces.
 # BASE_DIRS : Base directories for the root dir in the bundle.
 # SUBDIR : Optional name of root dir in bundle.
+# OUTPUTDIR : Optionally override output dir
 SetupBundleFile = $(NamedParamsMacroTemplate)
 define SetupBundleFileBody
 
@@ -70,8 +71,11 @@
 
   $$(call SetIfEmpty, $1_UNZIP_DEBUGINFO, false)
 
-  $(BUNDLES_OUTPUTDIR)/$$($1_BUNDLE_NAME): $$($1_FILES)
+  $$(call SetIfEmpty, $1_OUTPUTDIR, $$(BUNDLES_OUTPUTDIR))
+
+  $$($1_OUTPUTDIR)/$$($1_BUNDLE_NAME): $$($1_FILES)
 	$$(call MakeTargetDir)
+	$$(call LogWarn, Creating $$($1_BUNDLE_NAME))
         # If any of the files contain a space in the file name, FindFiles
         # will have replaced it with ?. Tar does not accept that so need to
         # switch it back.
@@ -137,7 +141,7 @@
           endif
         endif
 
-  $1 += $(BUNDLES_OUTPUTDIR)/$$($1_BUNDLE_NAME)
+  $1 += $$($1_OUTPUTDIR)/$$($1_BUNDLE_NAME)
 
 endef
 
@@ -165,7 +169,7 @@
 
 ################################################################################
 
-ifneq ($(filter product-bundles legacy-bundles, $(MAKECMDGOALS)), )
+ifneq ($(filter product-bundles% legacy-bundles, $(MAKECMDGOALS)), )
 
   SYMBOLS_EXCLUDE_PATTERN := %.debuginfo %.diz %.pdb %.map
 
--- a/make/CompileInterimLangtools.gmk	Wed Oct 23 13:53:41 2019 -0400
+++ b/make/CompileInterimLangtools.gmk	Wed Oct 23 14:01:17 2019 -0400
@@ -49,6 +49,13 @@
 TARGETS += $(patsubst %, $(BUILDTOOLS_OUTPUTDIR)/gensrc/%/module-info.java, \
     $(INTERIM_LANGTOOLS_MODULES))
 
+$(eval $(call SetupCopyFiles, COPY_PREVIEW_FEATURES, \
+    FILES := $(TOPDIR)/src/java.base/share/classes/jdk/internal/PreviewFeature.java, \
+    DEST := $(BUILDTOOLS_OUTPUTDIR)/gensrc/java.base.interim/jdk/internal/, \
+))
+
+TARGETS += $(COPY_PREVIEW_FEATURES)
+
 ################################################################################
 # Setup the rules to build interim langtools, which is compiled by the boot
 # javac and can be run on the boot jdk. This will be used to compile the rest of
@@ -72,13 +79,15 @@
       BIN := $(BUILDTOOLS_OUTPUTDIR)/interim_langtools_modules/$1.interim, \
       ADD_JAVAC_FLAGS := --module-path $(BUILDTOOLS_OUTPUTDIR)/interim_langtools_modules \
           $$(INTERIM_LANGTOOLS_ADD_EXPORTS) \
+          --patch-module java.base=$(BUILDTOOLS_OUTPUTDIR)/gensrc/java.base.interim \
+          --add-exports java.base/jdk.internal=jdk.compiler.interim \
           -Xlint:-module, \
   ))
 
   $1_DEPS_INTERIM := $$(addsuffix .interim, $$(filter \
       $$(INTERIM_LANGTOOLS_BASE_MODULES), $$(call FindTransitiveDepsForModule, $1)))
 
-  $$(BUILD_$1.interim): $$(foreach d, $$($1_DEPS_INTERIM), $$(BUILD_$$d))
+  $$(BUILD_$1.interim): $$(foreach d, $$($1_DEPS_INTERIM), $$(BUILD_$$d)) $(COPY_PREVIEW_FEATURES)
 
   TARGETS += $$(BUILD_$1.interim)
 endef
--- a/make/Docs.gmk	Wed Oct 23 13:53:41 2019 -0400
+++ b/make/Docs.gmk	Wed Oct 23 14:01:17 2019 -0400
@@ -95,6 +95,7 @@
     -tag see \
     -taglet build.tools.taglet.ExtLink \
     -taglet build.tools.taglet.Incubating \
+    -taglet build.tools.taglet.Preview \
     -tagletpath $(BUILDTOOLS_OUTPUTDIR)/jdk_tools_classes \
     $(CUSTOM_JAVADOC_TAGS) \
     #
@@ -191,26 +192,26 @@
 ################################################################################
 # Functions
 
-# Helper function for creating a png file from a dot file generated by the
+# Helper function for creating a svg file from a dot file generated by the
 # GenGraphs tool.
 # param 1: SetupJavadocGeneration namespace ($1)
 # param 2: module name
 #
-define setup_gengraph_dot_to_png
+define setup_gengraph_dot_to_svg
   $1_$2_DOT_SRC :=  $$($1_GENGRAPHS_DIR)/$2.dot
-  $1_$2_PNG_TARGET := $$($1_TARGET_DIR)/$2/module-graph.png
+  $1_$2_SVG_TARGET := $$($1_TARGET_DIR)/$2/module-graph.svg
 
-    # For each module needing a graph, create a png file from the dot file
+    # For each module needing a graph, create a svg file from the dot file
     # generated by the GenGraphs tool and store it in the target dir.
-    $$(eval $$(call SetupExecute, gengraphs_png_$1_$2, \
+    $$(eval $$(call SetupExecute, gengraphs_svg_$1_$2, \
         INFO := Running dot for module graphs for $2, \
         DEPS := $$(gengraphs_$1_TARGET), \
-        OUTPUT_FILE := $$($1_$2_PNG_TARGET), \
+        OUTPUT_FILE := $$($1_$2_SVG_TARGET), \
         SUPPORT_DIR := $$($1_GENGRAPHS_DIR), \
-        COMMAND := $$(DOT) -Tpng -o $$($1_$2_PNG_TARGET) $$($1_$2_DOT_SRC), \
+        COMMAND := $$(DOT) -Tsvg -o $$($1_$2_SVG_TARGET) $$($1_$2_DOT_SRC), \
     ))
 
-  $1_MODULEGRAPH_TARGETS += $$($1_$2_PNG_TARGET)
+  $1_MODULEGRAPH_TARGETS += $$($1_$2_SVG_TARGET)
 endef
 
 # Helper function to create the overview.html file to use with the -overview
@@ -281,7 +282,7 @@
 
   ifeq ($$(ENABLE_FULL_DOCS), true)
     # Tell the ModuleGraph taglet to generate html links to soon-to-be-created
-    # png files with module graphs.
+    # svg files with module graphs.
     $1_JAVA_ARGS += -DenableModuleGraph=true
   endif
 
@@ -361,8 +362,8 @@
   $1_JAVADOC_TARGETS := $$(javadoc_$1_TARGET)
 
   ifeq ($$(ENABLE_FULL_DOCS), true)
-    # We have asked ModuleGraph to generate links to png files. Now we must
-    # produce the png files.
+    # We have asked ModuleGraph to generate links to svg files. Now we must
+    # produce the svg files.
 
     # Locate which modules has the @moduleGraph tag in their module-info.java
     $1_MODULES_NEEDING_GRAPH := $$(strip $$(foreach m, $$($1_ALL_MODULES), \
@@ -387,11 +388,11 @@
             --dot-attributes $$(GENGRAPHS_PROPS), \
     ))
 
-    # For each module needing a graph, create a png file from the dot file
+    # For each module needing a graph, create a svg file from the dot file
     # generated by the GenGraphs tool and store it in the target dir.
     # They will depend on gengraphs_$1_TARGET, and will be added to $1.
     $$(foreach m, $$($1_MODULES_NEEDING_GRAPH), \
-      $$(eval $$(call setup_gengraph_dot_to_png,$1,$$m)) \
+      $$(eval $$(call setup_gengraph_dot_to_svg,$1,$$m)) \
     )
   endif
 endef
--- a/make/RunTests.gmk	Wed Oct 23 13:53:41 2019 -0400
+++ b/make/RunTests.gmk	Wed Oct 23 14:01:17 2019 -0400
@@ -185,13 +185,13 @@
 	    $$(FIXPATH) $$(JDK_UNDER_TEST)/bin/jaotc \
 	        $$($1_JAOTC_OPTS) --output $$@ --module $$($1_MODULE) \
 	)
-	$$(call ExecuteWithLog, $$@.check, \
+	$$(call ExecuteWithLog, $$@.check, ( \
 	    $$(FIXPATH) $$(JDK_UNDER_TEST)/bin/java \
 	        $$($1_VM_OPTIONS) -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions \
 	        -XX:+PrintAOT -XX:+UseAOTStrictLoading \
 	        -XX:AOTLibrary=$$@ -version \
 	         > $$@.verify-aot \
-	)
+	))
 
   $1_AOT_OPTIONS += -XX:+UnlockExperimentalVMOptions
   $1_AOT_OPTIONS += -XX:AOTLibrary=$$($1_AOT_LIB)
@@ -593,7 +593,7 @@
 	$$(call LogWarn)
 	$$(call LogWarn, Running test '$$($1_TEST)')
 	$$(call MakeDir, $$($1_TEST_RESULTS_DIR) $$($1_TEST_SUPPORT_DIR))
-	$$(call ExecuteWithLog, $$($1_TEST_SUPPORT_DIR)/gtest, \
+	$$(call ExecuteWithLog, $$($1_TEST_SUPPORT_DIR)/gtest, ( \
 	    $$(FIXPATH) $$(TEST_IMAGE_DIR)/hotspot/gtest/$$($1_VARIANT)/gtestLauncher \
 	        -jdk $(JDK_UNDER_TEST) $$($1_GTEST_FILTER) \
 	        --gtest_output=xml:$$($1_TEST_RESULTS_DIR)/gtest.xml \
@@ -602,7 +602,7 @@
 	        > >($(TEE) $$($1_TEST_RESULTS_DIR)/gtest.txt) \
 	    && $$(ECHO) $$$$? > $$($1_EXITCODE) \
 	    || $$(ECHO) $$$$? > $$($1_EXITCODE) \
-	)
+	))
 
   $1_RESULT_FILE := $$($1_TEST_RESULTS_DIR)/gtest.txt
 
@@ -705,7 +705,7 @@
 	$$(call LogWarn)
 	$$(call LogWarn, Running test '$$($1_TEST)')
 	$$(call MakeDir, $$($1_TEST_RESULTS_DIR) $$($1_TEST_SUPPORT_DIR))
-	$$(call ExecuteWithLog, $$($1_TEST_SUPPORT_DIR)/micro, \
+	$$(call ExecuteWithLog, $$($1_TEST_SUPPORT_DIR)/micro, ( \
 	    $$(FIXPATH) $$($1_MICRO_TEST_JDK)/bin/java $$($1_MICRO_JAVA_OPTIONS) \
 	        -jar $$($1_MICRO_BENCHMARKS_JAR) \
 	        $$($1_MICRO_ITER) $$($1_MICRO_FORK) $$($1_MICRO_TIME) \
@@ -715,7 +715,7 @@
 	        > >($(TEE) $$($1_TEST_RESULTS_DIR)/micro.txt) \
 	    && $$(ECHO) $$$$? > $$($1_EXITCODE) \
 	    || $$(ECHO) $$$$? > $$($1_EXITCODE) \
-	)
+	))
 
   $1_RESULT_FILE := $$($1_TEST_RESULTS_DIR)/micro.txt
 
@@ -928,7 +928,7 @@
 	$$(call LogWarn)
 	$$(call LogWarn, Running test '$$($1_TEST)')
 	$$(call MakeDir, $$($1_TEST_RESULTS_DIR) $$($1_TEST_SUPPORT_DIR))
-	$$(call ExecuteWithLog, $$($1_TEST_SUPPORT_DIR)/jtreg, \
+	$$(call ExecuteWithLog, $$($1_TEST_SUPPORT_DIR)/jtreg, ( \
 	    $$(COV_ENVIRONMENT) \
 	    $$(JAVA) $$($1_JTREG_LAUNCHER_OPTIONS) \
 	        -Dprogram=jtreg -jar $$(JT_HOME)/lib/jtreg.jar \
@@ -943,7 +943,7 @@
 	        $$($1_TEST_NAME) \
 	    && $$(ECHO) $$$$? > $$($1_EXITCODE) \
 	    || $$(ECHO) $$$$? > $$($1_EXITCODE) \
-	)
+	))
 
   $1_RESULT_FILE := $$($1_TEST_RESULTS_DIR)/text/stats.txt
 
@@ -1019,12 +1019,12 @@
 	$$(call LogWarn)
 	$$(call LogWarn, Running test '$$($1_TEST)')
 	$$(call MakeDir, $$($1_TEST_RESULTS_DIR) $$($1_TEST_SUPPORT_DIR))
-	$$(call ExecuteWithLog, $$($1_TEST_SUPPORT_DIR)/test-execution, \
+	$$(call ExecuteWithLog, $$($1_TEST_SUPPORT_DIR)/test-execution, ( \
 	    $$($1_TEST_COMMAND_LINE) \
 	        > >($(TEE) $$($1_TEST_RESULTS_DIR)/test-output.txt) \
 	    && $$(ECHO) $$$$? > $$($1_EXITCODE) \
 	    || $$(ECHO) $$$$? > $$($1_EXITCODE) \
-	)
+	))
 
   $1_RESULT_FILE := $$($1_TEST_RESULTS_DIR)/gtest.txt
 
--- a/make/autoconf/basics.m4	Wed Oct 23 13:53:41 2019 -0400
+++ b/make/autoconf/basics.m4	Wed Oct 23 14:01:17 2019 -0400
@@ -489,31 +489,43 @@
       # for unknown variables in the end.
       CONFIGURE_OVERRIDDEN_VARIABLES="$try_remove_var"
 
+      tool_override=[$]$1
+      AC_MSG_NOTICE([User supplied override $1="$tool_override"])
+
       # Check if we try to supply an empty value
-      if test "x[$]$1" = x; then
-        AC_MSG_NOTICE([Setting user supplied tool $1= (no value)])
+      if test "x$tool_override" = x; then
         AC_MSG_CHECKING([for $1])
         AC_MSG_RESULT([disabled])
       else
+        # Split up override in command part and argument part
+        tool_and_args=($tool_override)
+        [ tool_command=${tool_and_args[0]} ]
+        [ unset 'tool_and_args[0]' ]
+        [ tool_args=${tool_and_args[@]} ]
+
         # Check if the provided tool contains a complete path.
-        tool_specified="[$]$1"
-        tool_basename="${tool_specified##*/}"
-        if test "x$tool_basename" = "x$tool_specified"; then
+        tool_basename="${tool_command##*/}"
+        if test "x$tool_basename" = "x$tool_command"; then
           # A command without a complete path is provided, search $PATH.
-          AC_MSG_NOTICE([Will search for user supplied tool $1=$tool_basename])
+          AC_MSG_NOTICE([Will search for user supplied tool "$tool_basename"])
           AC_PATH_PROG($1, $tool_basename)
           if test "x[$]$1" = x; then
-            AC_MSG_ERROR([User supplied tool $tool_basename could not be found])
+            AC_MSG_ERROR([User supplied tool $1="$tool_basename" could not be found])
           fi
         else
           # Otherwise we believe it is a complete path. Use it as it is.
-          AC_MSG_NOTICE([Will use user supplied tool $1=$tool_specified])
-          AC_MSG_CHECKING([for $1])
-          if test ! -x "$tool_specified"; then
+          AC_MSG_NOTICE([Will use user supplied tool "$tool_command"])
+          AC_MSG_CHECKING([for $tool_command])
+          if test ! -x "$tool_command"; then
             AC_MSG_RESULT([not found])
-            AC_MSG_ERROR([User supplied tool $1=$tool_specified does not exist or is not executable])
+            AC_MSG_ERROR([User supplied tool $1="$tool_command" does not exist or is not executable])
           fi
-          AC_MSG_RESULT([$tool_specified])
+           $1="$tool_command"
+          AC_MSG_RESULT([found])
+        fi
+        if test "x$tool_args" != x; then
+          # If we got arguments, re-append them to the command after the fixup.
+          $1="[$]$1 $tool_args"
         fi
       fi
     fi
--- a/make/autoconf/flags-cflags.m4	Wed Oct 23 13:53:41 2019 -0400
+++ b/make/autoconf/flags-cflags.m4	Wed Oct 23 14:01:17 2019 -0400
@@ -170,11 +170,11 @@
       DISABLE_WARNING_PREFIX="-erroff="
       CFLAGS_WARNINGS_ARE_ERRORS="-errwarn=%all"
 
-      WARNINGS_ENABLE_ALL_CFLAGS="-v"
-      WARNINGS_ENABLE_ALL_CXXFLAGS="+w"
+      WARNINGS_ENABLE_ALL_CFLAGS="-v -fd -xtransition"
+      WARNINGS_ENABLE_ALL_CXXFLAGS="+w +w2"
 
-      DISABLED_WARNINGS_C=""
-      DISABLED_WARNINGS_CXX=""
+      DISABLED_WARNINGS_C="E_OLD_STYLE_FUNC_DECL E_OLD_STYLE_FUNC_DEF E_SEMANTICS_OF_OP_CHG_IN_ANSI_C E_NO_REPLACEMENT_IN_STRING E_DECLARATION_IN_CODE"
+      DISABLED_WARNINGS_CXX="inllargeuse inllargeint notused wemptydecl notemsource"
       ;;
 
     gcc)
--- a/make/autoconf/jdk-options.m4	Wed Oct 23 13:53:41 2019 -0400
+++ b/make/autoconf/jdk-options.m4	Wed Oct 23 14:01:17 2019 -0400
@@ -599,7 +599,14 @@
     AC_MSG_RESULT([yes, forced])
     ENABLE_GENERATE_CLASSLIST="true"
     if test "x$ENABLE_GENERATE_CLASSLIST_POSSIBLE" = "xfalse"; then
-      AC_MSG_WARN([Generation of classlist might not be possible with JVM Variants $JVM_VARIANTS and enable-cds=$ENABLE_CDS])
+      if test "x$ENABLE_CDS" = "xfalse"; then
+        # In GenerateLinkOptData.gmk, DumpLoadedClassList is used to generate the
+        # classlist file. It never will work in this case since the VM will report
+        # an error for DumpLoadedClassList when CDS is disabled.
+        AC_MSG_ERROR([Generation of classlist is not possible with enable-cds=false])
+      else
+        AC_MSG_WARN([Generation of classlist might not be possible with JVM Variants $JVM_VARIANTS and enable-cds=$ENABLE_CDS])
+      fi
     fi
   elif test "x$enable_generate_classlist" = "xno"; then
     AC_MSG_RESULT([no, forced])
--- a/make/common/MakeBase.gmk	Wed Oct 23 13:53:41 2019 -0400
+++ b/make/common/MakeBase.gmk	Wed Oct 23 14:01:17 2019 -0400
@@ -564,8 +564,8 @@
 # Param 1 - The path to base the name of the log file / command line file on
 # Param 2 - The command to run
 ExecuteWithLog = \
-  $(call LogCmdlines, Exececuting: [$(strip $2)]) \
-  $(call MakeDir, $(dir $(strip $1))) \
+  $(call LogCmdlines, Executing: [$(strip $2)]) \
+  $(call MakeDir, $(dir $(strip $1)) $(MAKESUPPORT_OUTPUTDIR)/failure-logs) \
   $(call WriteFile, $2, $(strip $1).cmdline) \
   ( $(RM) $(strip $1).log && $(strip $2) > >($(TEE) -a $(strip $1).log) 2> >($(TEE) -a $(strip $1).log >&2) || \
       ( exitcode=$(DOLLAR)? && \
--- a/make/common/TestFilesCompilation.gmk	Wed Oct 23 13:53:41 2019 -0400
+++ b/make/common/TestFilesCompilation.gmk	Wed Oct 23 14:01:17 2019 -0400
@@ -98,7 +98,7 @@
         DISABLED_WARNINGS_gcc := format undef unused-function unused-value, \
         DISABLED_WARNINGS_clang := undef format-nonliteral \
             missing-field-initializers sometimes-uninitialized, \
-        DISABLED_WARNINGS_CXX_solstudio := wvarhidenmem, \
+        DISABLED_WARNINGS_CXX_solstudio := wvarhidenmem doubunder, \
         LIBS := $$($1_LIBS_$$(name)), \
         TOOLCHAIN := $(if $$(filter %.cpp, $$(file)), TOOLCHAIN_LINK_CXX, TOOLCHAIN_DEFAULT), \
         OPTIMIZATION := $$(if $$($1_OPTIMIZATION_$$(name)),$$($1_OPTIMIZATION_$$(name)),LOW), \
--- a/make/conf/jib-profiles.js	Wed Oct 23 13:53:41 2019 -0400
+++ b/make/conf/jib-profiles.js	Wed Oct 23 14:01:17 2019 -0400
@@ -839,13 +839,17 @@
     if (testedProfile == null) {
         testedProfile = input.build_os + "-" + input.build_cpu;
     }
-    var testedProfileJDK = testedProfile + ".jdk";
-    var testedProfileTest = ""
-    if (testedProfile.endsWith("-jcov")) {
-        testedProfileTest = testedProfile.substring(0, testedProfile.length - "-jcov".length) + ".test";
+    var testedProfileJdk = testedProfile + ".jdk";
+    // Make it possible to use the test image from a different profile
+    var testImageProfile;
+    if (input.testImageProfile != null) {
+        testImageProfile = input.testImageProfile;
+    } else if (testedProfile.endsWith("-jcov")) {
+        testImageProfile = testedProfile.substring(0, testedProfile.length - "-jcov".length);
     } else {
-        testedProfileTest = testedProfile + ".test";
+        testImageProfile = testedProfile;
     }
+    var testedProfileTest = testImageProfile + ".test"
     var testOnlyMake = [ "run-test-prebuilt", "LOG_CMDLINES=true", "JTREG_VERBOSE=fail,error,time" ];
     if (testedProfile.endsWith("-gcov")) {
         testOnlyMake = concat(testOnlyMake, "GCOV_ENABLED=true")
@@ -855,14 +859,14 @@
             target_os: input.build_os,
             target_cpu: input.build_cpu,
             dependencies: [
-                "jtreg", "gnumake", "boot_jdk", "devkit", "jib", "jcov", testedProfileJDK,
+                "jtreg", "gnumake", "boot_jdk", "devkit", "jib", "jcov", testedProfileJdk,
                 testedProfileTest
             ],
             src: "src.conf",
             make_args: testOnlyMake,
             environment: {
                 "BOOT_JDK": common.boot_jdk_home,
-                "JDK_IMAGE_DIR": input.get(testedProfileJDK, "home_path"),
+                "JDK_IMAGE_DIR": input.get(testedProfileJdk, "home_path"),
                 "TEST_IMAGE_DIR": input.get(testedProfileTest, "home_path")
             },
             labels: "test"
@@ -871,10 +875,10 @@
 
     // If actually running the run-test-prebuilt profile, verify that the input
     // variable is valid and if so, add the appropriate target_* values from
-    // the tested profile.
+    // the tested profile. Use testImageProfile value as backup.
     if (input.profile == "run-test-prebuilt") {
-        if (profiles[testedProfile] == null) {
-            error("testedProfile is not defined: " + testedProfile);
+        if (profiles[testedProfile] == null && profiles[testImageProfile] == null) {
+            error("testedProfile is not defined: " + testedProfile + " " + testImageProfile);
         }
     }
     if (profiles[testedProfile] != null) {
@@ -882,6 +886,11 @@
             = profiles[testedProfile]["target_os"];
         testOnlyProfilesPrebuilt["run-test-prebuilt"]["target_cpu"]
             = profiles[testedProfile]["target_cpu"];
+    } else if (profiles[testImageProfile] != null) {
+        testOnlyProfilesPrebuilt["run-test-prebuilt"]["target_os"]
+            = profiles[testImageProfile]["target_os"];
+        testOnlyProfilesPrebuilt["run-test-prebuilt"]["target_cpu"]
+            = profiles[testImageProfile]["target_cpu"];
     }
     profiles = concatObjects(profiles, testOnlyProfilesPrebuilt);
 
@@ -1346,3 +1355,8 @@
              || (input.build_os == "linux"
                  && java.lang.System.getProperty("os.version").contains("Microsoft")));
 }
+
+var error = function (s) {
+    java.lang.System.err.println("[ERROR] " + s);
+    exit(1);
+};
--- a/make/hotspot/gensrc/GensrcAdlc.gmk	Wed Oct 23 13:53:41 2019 -0400
+++ b/make/hotspot/gensrc/GensrcAdlc.gmk	Wed Oct 23 14:01:17 2019 -0400
@@ -75,7 +75,6 @@
       OUTPUT_DIR := $(JVM_VARIANT_OUTPUTDIR)/tools/adlc, \
       DEBUG_SYMBOLS := false, \
       DISABLED_WARNINGS_clang := tautological-compare, \
-      DISABLED_WARNINGS_solstudio := notemsource, \
       DEFINE_THIS_FILE := false, \
   ))
 
--- a/make/hotspot/lib/CompileJvm.gmk	Wed Oct 23 13:53:41 2019 -0400
+++ b/make/hotspot/lib/CompileJvm.gmk	Wed Oct 23 14:01:17 2019 -0400
@@ -78,14 +78,14 @@
 ################################################################################
 # Disabled warnings
 
-DISABLED_WARNINGS_gcc := extra parentheses comment unknown-pragmas address \
+DISABLED_WARNINGS_gcc := parentheses comment unknown-pragmas address \
     delete-non-virtual-dtor char-subscripts array-bounds int-in-bool-context \
     ignored-qualifiers  missing-field-initializers implicit-fallthrough \
     empty-body strict-overflow sequence-point maybe-uninitialized \
-    misleading-indentation
+    misleading-indentation cast-function-type
 
 ifeq ($(call check-jvm-feature, zero), true)
-  DISABLED_WARNINGS_gcc += return-type switch
+  DISABLED_WARNINGS_gcc += return-type switch clobbered
 endif
 
 DISABLED_WARNINGS_clang := tautological-compare \
--- a/make/hotspot/symbols/symbols-unix	Wed Oct 23 13:53:41 2019 -0400
+++ b/make/hotspot/symbols/symbols-unix	Wed Oct 23 14:01:17 2019 -0400
@@ -97,6 +97,7 @@
 JVM_GetDeclaredClasses
 JVM_GetDeclaringClass
 JVM_GetEnclosingMethodInfo
+JVM_GetExtendedNPEMessage
 JVM_GetFieldIxModifiers
 JVM_GetFieldTypeAnnotations
 JVM_GetInheritedAccessControlContext
--- a/make/jdk/src/classes/build/tools/taglet/ModuleGraph.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/make/jdk/src/classes/build/tools/taglet/ModuleGraph.java	Wed Oct 23 14:01:17 2019 -0400
@@ -64,7 +64,7 @@
         }
 
         String moduleName = ((ModuleElement) element).getQualifiedName().toString();
-        String imageFile = "module-graph.png";
+        String imageFile = "module-graph.svg";
         int thumbnailHeight = -1;
         String hoverImage = "";
         if (!moduleName.equals("java.base")) {
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/make/jdk/src/classes/build/tools/taglet/Preview.java	Wed Oct 23 14:01:17 2019 -0400
@@ -0,0 +1,79 @@
+/*
+ * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package build.tools.taglet;
+
+import java.util.Arrays;
+import java.util.EnumSet;
+import java.util.List;
+import java.util.Set;
+import java.util.function.Predicate;
+import javax.lang.model.element.Element;
+import com.sun.source.doctree.DocTree;
+import com.sun.source.doctree.TextTree;
+import com.sun.source.doctree.UnknownInlineTagTree;
+import jdk.javadoc.doclet.Taglet;
+import static jdk.javadoc.doclet.Taglet.Location.*;
+
+/**
+ * An block tag to insert a standard warning about a preview API.
+ */
+public class Preview implements Taglet {
+
+    /** Returns the set of locations in which a taglet may be used. */
+    @Override
+    public Set<Location> getAllowedLocations() {
+        return EnumSet.of(MODULE, PACKAGE, TYPE, CONSTRUCTOR, METHOD, FIELD);
+    }
+
+    @Override
+    public boolean isInlineTag() {
+        return true;
+    }
+
+    @Override
+    public String getName() {
+        return "preview";
+    }
+
+    @Override
+    public String toString(List<? extends DocTree> tags, Element elem) {
+        UnknownInlineTagTree previewTag = (UnknownInlineTagTree) tags.get(0);
+        List<? extends DocTree> previewContent = previewTag.getContent();
+        String previewText = ((TextTree) previewContent.get(0)).getBody();
+        String[] summaryAndDetails = previewText.split("\n\r?\n\r?");
+        String summary = summaryAndDetails[0];
+        String details = summaryAndDetails.length > 1 ? summaryAndDetails[1] : summaryAndDetails[0];
+        StackTraceElement[] stackTrace = new Exception().getStackTrace();
+        Predicate<StackTraceElement> isSummary =
+                el -> el.getClassName().endsWith("HtmlDocletWriter") &&
+                      el.getMethodName().equals("addSummaryComment");
+        if (Arrays.stream(stackTrace).anyMatch(isSummary)) {
+            return "<div style=\"display:inline-block; font-weight:bold\">" + summary + "</div><br>";
+        }
+        return "<div style=\"border: 1px solid red; border-radius: 5px; padding: 5px; display:inline-block; font-size: larger\">" + details + "</div><br>";
+    }
+}
+
--- a/make/launcher/Launcher-jdk.pack.gmk	Wed Oct 23 13:53:41 2019 -0400
+++ b/make/launcher/Launcher-jdk.pack.gmk	Wed Oct 23 14:01:17 2019 -0400
@@ -87,6 +87,7 @@
     CFLAGS_solaris := -KPIC, \
     CFLAGS_macosx := -fPIC, \
     DISABLED_WARNINGS_clang := format-nonliteral, \
+    DISABLED_WARNINGS_solstudio := wunreachable, \
     LDFLAGS := $(LDFLAGS_JDKEXE) $(LDFLAGS_CXX_JDK) \
         $(call SET_SHARED_LIBRARY_ORIGIN), \
     LIBS := $(UNPACKEXE_LIBS) $(LIBCXX), \
--- a/make/lib/Awt2dLibraries.gmk	Wed Oct 23 13:53:41 2019 -0400
+++ b/make/lib/Awt2dLibraries.gmk	Wed Oct 23 14:01:17 2019 -0400
@@ -229,7 +229,6 @@
         format-nonliteral parentheses unused-value unused-function, \
     DISABLED_WARNINGS_clang := logical-op-parentheses extern-initializer \
         sign-compare format-nonliteral, \
-    DISABLED_WARNINGS_solstudio := E_DECLARATION_IN_CODE, \
     DISABLED_WARNINGS_microsoft := 4244 4267 4996, \
     ASFLAGS := $(LIBAWT_ASFLAGS), \
     LDFLAGS := $(LDFLAGS_JDKLIB) $(call SET_SHARED_LIBRARY_ORIGIN), \
@@ -339,8 +338,8 @@
             implicit-fallthrough undef unused-function, \
         DISABLED_WARNINGS_clang := parentheses format undef \
             logical-op-parentheses format-nonliteral int-conversion, \
-        DISABLED_WARNINGS_solstudio := E_DECLARATION_IN_CODE \
-            E_ASSIGNMENT_TYPE_MISMATCH E_NON_CONST_INIT, \
+        DISABLED_WARNINGS_solstudio := E_ASSIGNMENT_TYPE_MISMATCH \
+             E_NON_CONST_INIT, \
         LDFLAGS := $(LDFLAGS_JDKLIB) \
             $(call SET_SHARED_LIBRARY_ORIGIN) \
             -L$(INSTALL_LIBRARIES_HERE), \
@@ -620,7 +619,8 @@
         E_ENUM_VAL_OVERFLOWS_INT_MAX, \
     DISABLED_WARNINGS_CXX_solstudio := \
         truncwarn wvarhidenmem wvarhidemem wbadlkginit identexpected \
-        hidevf w_novirtualdescr arrowrtn2 refmemnoconstr_aggr unknownpragma, \
+        hidevf w_novirtualdescr arrowrtn2 refmemnoconstr_aggr unknownpragma \
+        doubunder wunreachable, \
     DISABLED_WARNINGS_microsoft := 4267 4244 4018 4090 4996 4146 4334 4819 4101 4068 4805 4138, \
     LDFLAGS := $(subst -Xlinker -z -Xlinker defs,, \
         $(subst -Wl$(COMMA)-z$(COMMA)defs,,$(LDFLAGS_JDKLIB))) $(LDFLAGS_CXX_JDK) \
@@ -848,8 +848,7 @@
           maybe-uninitialized shift-negative-value implicit-fallthrough \
           unused-function, \
       DISABLED_WARNINGS_clang := incompatible-pointer-types sign-compare, \
-      DISABLED_WARNINGS_solstudio := E_NEWLINE_NOT_LAST E_DECLARATION_IN_CODE \
-          E_STATEMENT_NOT_REACHED, \
+      DISABLED_WARNINGS_solstudio := E_STATEMENT_NOT_REACHED, \
       DISABLED_WARNINGS_microsoft := 4018 4244 4267, \
       LDFLAGS := $(LDFLAGS_JDKLIB) \
           $(call SET_SHARED_LIBRARY_ORIGIN), \
--- a/make/lib/CoreLibraries.gmk	Wed Oct 23 13:53:41 2019 -0400
+++ b/make/lib/CoreLibraries.gmk	Wed Oct 23 14:01:17 2019 -0400
@@ -212,9 +212,6 @@
     CFLAGS := $(CFLAGS_JDKLIB) $(LIBJLI_CFLAGS), \
     DISABLED_WARNINGS_gcc := unused-function, \
     DISABLED_WARNINGS_clang := sometimes-uninitialized format-nonliteral, \
-    DISABLED_WARNINGS_solstudio := \
-        E_ASM_DISABLES_OPTIMIZATION \
-        E_STATEMENT_NOT_REACHED, \
     LDFLAGS := $(LDFLAGS_JDKLIB) \
         $(call SET_SHARED_LIBRARY_ORIGIN), \
     LIBS_unix := $(LIBZ_LIBS), \
--- a/make/lib/Lib-jdk.hotspot.agent.gmk	Wed Oct 23 13:53:41 2019 -0400
+++ b/make/lib/Lib-jdk.hotspot.agent.gmk	Wed Oct 23 14:01:17 2019 -0400
@@ -61,7 +61,7 @@
     DISABLED_WARNINGS_microsoft := 4267, \
     DISABLED_WARNINGS_gcc := sign-compare pointer-arith, \
     DISABLED_WARNINGS_clang := sign-compare pointer-arith format-nonliteral, \
-    DISABLED_WARNINGS_CXX_solstudio := truncwarn unknownpragma, \
+    DISABLED_WARNINGS_CXX_solstudio := truncwarn unknownpragma doubunder, \
     CFLAGS := $(CFLAGS_JDKLIB) $(SA_CFLAGS), \
     CXXFLAGS := $(CXXFLAGS_JDKLIB) $(SA_CFLAGS) $(SA_CXXFLAGS), \
     EXTRA_SRC := $(LIBSA_EXTRA_SRC), \
--- a/make/lib/Lib-jdk.pack.gmk	Wed Oct 23 13:53:41 2019 -0400
+++ b/make/lib/Lib-jdk.pack.gmk	Wed Oct 23 14:01:17 2019 -0400
@@ -38,6 +38,7 @@
     EXTRA_HEADER_DIRS := $(call GetJavaHeaderDir, java.base), \
     DISABLED_WARNINGS_gcc := implicit-fallthrough, \
     DISABLED_WARNINGS_clang := format-nonliteral, \
+    DISABLED_WARNINGS_solstudio := wunreachable, \
     LDFLAGS := $(LDFLAGS_JDKLIB) $(LDFLAGS_CXX_JDK) \
         $(call SET_SHARED_LIBRARY_ORIGIN), \
     LDFLAGS_windows := -map:$(SUPPORT_OUTPUTDIR)/native/$(MODULE)/unpack.map -debug, \
--- a/src/hotspot/cpu/aarch64/gc/shenandoah/shenandoahBarrierSetAssembler_aarch64.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/cpu/aarch64/gc/shenandoah/shenandoahBarrierSetAssembler_aarch64.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -58,7 +58,7 @@
       Address gc_state(rthread, in_bytes(ShenandoahThreadLocalData::gc_state_offset()));
       __ ldrb(rscratch1, gc_state);
       if (dest_uninitialized) {
-        __ tbz(rscratch2, ShenandoahHeap::HAS_FORWARDED_BITPOS, done);
+        __ tbz(rscratch1, ShenandoahHeap::HAS_FORWARDED_BITPOS, done);
       } else {
         __ mov(rscratch2, ShenandoahHeap::HAS_FORWARDED | ShenandoahHeap::MARKING);
         __ tst(rscratch1, rscratch2);
@@ -262,7 +262,7 @@
   __ leave();
 }
 
-void ShenandoahBarrierSetAssembler::load_reference_barrier_native(MacroAssembler* masm, Register dst, Register tmp) {
+void ShenandoahBarrierSetAssembler::load_reference_barrier_native(MacroAssembler* masm, Register dst, Address load_addr) {
   if (!ShenandoahLoadRefBarrier) {
     return;
   }
@@ -272,6 +272,8 @@
   Label is_null;
   Label done;
 
+  __ block_comment("load_reference_barrier_native { ");
+
   __ cbz(dst, is_null);
 
   __ enter();
@@ -285,6 +287,7 @@
   __ mov(rscratch2, dst);
   __ push_call_clobbered_registers();
   __ mov(lr, CAST_FROM_FN_PTR(address, ShenandoahRuntime::load_reference_barrier_native));
+  __ lea(r1, load_addr);
   __ mov(r0, rscratch2);
   __ blr(lr);
   __ mov(rscratch2, r0);
@@ -294,6 +297,7 @@
   __ bind(done);
   __ leave();
   __ bind(is_null);
+  __ block_comment("} load_reference_barrier_native");
 }
 
 void ShenandoahBarrierSetAssembler::storeval_barrier(MacroAssembler* masm, Register dst, Register tmp) {
@@ -327,20 +331,32 @@
   bool on_weak = (decorators & ON_WEAK_OOP_REF) != 0;
   bool on_phantom = (decorators & ON_PHANTOM_OOP_REF) != 0;
   bool on_reference = on_weak || on_phantom;
-  bool keep_alive = (decorators & AS_NO_KEEPALIVE) == 0;
+  bool is_traversal_mode = ShenandoahHeap::heap()->is_traversal_mode();
+  bool keep_alive = (decorators & AS_NO_KEEPALIVE) == 0 || is_traversal_mode;
+
+  Register result_dst = dst;
+
+  if (on_oop) {
+    // We want to preserve src
+    if (dst == src.base() || dst == src.index()) {
+      dst = rscratch1;
+    }
+    assert_different_registers(dst, src.base(), src.index());
+  }
 
   BarrierSetAssembler::load_at(masm, decorators, type, dst, src, tmp1, tmp_thread);
   if (on_oop) {
-     if (not_in_heap) {
-       if (ShenandoahHeap::heap()->is_traversal_mode()) {
-         load_reference_barrier(masm, dst, tmp1);
-         keep_alive = true;
-       } else {
-         load_reference_barrier_native(masm, dst, tmp1);
-       }
-     } else {
-       load_reference_barrier(masm, dst, tmp1);
-     }
+    if (not_in_heap && !is_traversal_mode) {
+      load_reference_barrier_native(masm, dst, src);
+    } else {
+      load_reference_barrier(masm, dst, tmp1);
+    }
+
+    if (dst != result_dst) {
+      __ mov(result_dst, dst);
+      dst = result_dst;
+    }
+
     if (ShenandoahKeepAliveBarrier && on_reference && keep_alive) {
       __ enter();
       satb_write_barrier_pre(masm /* masm */,
--- a/src/hotspot/cpu/aarch64/gc/shenandoah/shenandoahBarrierSetAssembler_aarch64.hpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/cpu/aarch64/gc/shenandoah/shenandoahBarrierSetAssembler_aarch64.hpp	Wed Oct 23 14:01:17 2019 -0400
@@ -58,7 +58,7 @@
   void resolve_forward_pointer_not_null(MacroAssembler* masm, Register dst, Register tmp = noreg);
   void load_reference_barrier(MacroAssembler* masm, Register dst, Register tmp);
   void load_reference_barrier_not_null(MacroAssembler* masm, Register dst, Register tmp);
-  void load_reference_barrier_native(MacroAssembler* masm, Register dst, Register tmp);
+  void load_reference_barrier_native(MacroAssembler* masm, Register dst, Address load_addr);
 
   address generate_shenandoah_lrb(StubCodeGenerator* cgen);
 
--- a/src/hotspot/cpu/ppc/assembler_ppc.hpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/cpu/ppc/assembler_ppc.hpp	Wed Oct 23 14:01:17 2019 -0400
@@ -444,6 +444,9 @@
     FDIV_OPCODE   = (63u << OPCODE_SHIFT |  18u << 1),
     FDIVS_OPCODE  = (59u << OPCODE_SHIFT |  18u << 1),
     FMR_OPCODE    = (63u << OPCODE_SHIFT |  72u << 1),
+    FRIN_OPCODE   = (63u << OPCODE_SHIFT | 392u << 1),
+    FRIP_OPCODE   = (63u << OPCODE_SHIFT | 456u << 1),
+    FRIM_OPCODE   = (63u << OPCODE_SHIFT | 488u << 1),
     // These are special Power6 opcodes, reused for "lfdepx" and "stfdepx"
     // on Power7.  Do not use.
     // MFFGPR_OPCODE  = (31u << OPCODE_SHIFT | 607u << 1),
@@ -545,6 +548,9 @@
     XVMSUBADP_OPCODE=(60u << OPCODE_SHIFT |  113u << 3),
     XVNMSUBASP_OPCODE=(60u<< OPCODE_SHIFT |  209u << 3),
     XVNMSUBADP_OPCODE=(60u<< OPCODE_SHIFT |  241u << 3),
+    XVRDPI_OPCODE  = (60u << OPCODE_SHIFT |  201u << 2),
+    XVRDPIM_OPCODE = (60u << OPCODE_SHIFT |  249u << 2),
+    XVRDPIP_OPCODE = (60u << OPCODE_SHIFT |  233u << 2),
 
     // Deliver A Random Number (introduced with POWER9)
     DARN_OPCODE    = (31u << OPCODE_SHIFT |  755u << 1),
@@ -1981,6 +1987,10 @@
   inline void fmr(  FloatRegister d, FloatRegister b);
   inline void fmr_( FloatRegister d, FloatRegister b);
 
+  inline void frin( FloatRegister d, FloatRegister b);
+  inline void frip( FloatRegister d, FloatRegister b);
+  inline void frim( FloatRegister d, FloatRegister b);
+
   //  inline void mffgpr( FloatRegister d, Register b);
   //  inline void mftgpr( Register d, FloatRegister b);
   inline void cmpb(   Register a, Register s, Register b);
@@ -2241,6 +2251,9 @@
   inline void xvmsubadp(VectorSRegister d, VectorSRegister a, VectorSRegister b);
   inline void xvnmsubasp(VectorSRegister d, VectorSRegister a, VectorSRegister b);
   inline void xvnmsubadp(VectorSRegister d, VectorSRegister a, VectorSRegister b);
+  inline void xvrdpi(   VectorSRegister d, VectorSRegister b);
+  inline void xvrdpim(  VectorSRegister d, VectorSRegister b);
+  inline void xvrdpip(  VectorSRegister d, VectorSRegister b);
 
   // VSX Extended Mnemonics
   inline void xxspltd(  VectorSRegister d, VectorSRegister a, int x);
--- a/src/hotspot/cpu/ppc/assembler_ppc.inline.hpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/cpu/ppc/assembler_ppc.inline.hpp	Wed Oct 23 14:01:17 2019 -0400
@@ -675,6 +675,10 @@
 inline void Assembler::fmr( FloatRegister d, FloatRegister b) { emit_int32( FMR_OPCODE | frt(d) | frb(b) | rc(0)); }
 inline void Assembler::fmr_(FloatRegister d, FloatRegister b) { emit_int32( FMR_OPCODE | frt(d) | frb(b) | rc(1)); }
 
+inline void Assembler::frin( FloatRegister d, FloatRegister b) { emit_int32( FRIN_OPCODE | frt(d) | frb(b) | rc(0)); }
+inline void Assembler::frip( FloatRegister d, FloatRegister b) { emit_int32( FRIP_OPCODE | frt(d) | frb(b) | rc(0)); }
+inline void Assembler::frim( FloatRegister d, FloatRegister b) { emit_int32( FRIM_OPCODE | frt(d) | frb(b) | rc(0)); }
+
 // These are special Power6 opcodes, reused for "lfdepx" and "stfdepx"
 // on Power7.  Do not use.
 //inline void Assembler::mffgpr( FloatRegister d, Register b)   { emit_int32( MFFGPR_OPCODE | frt(d) | rb(b) | rc(0)); }
@@ -796,6 +800,10 @@
 inline void Assembler::xvmsubadp( VectorSRegister d, VectorSRegister a, VectorSRegister b) { emit_int32( XVMSUBADP_OPCODE  | vsrt(d) | vsra(a) | vsrb(b)); }
 inline void Assembler::xvnmsubasp(VectorSRegister d, VectorSRegister a, VectorSRegister b) { emit_int32( XVNMSUBASP_OPCODE | vsrt(d) | vsra(a) | vsrb(b)); }
 inline void Assembler::xvnmsubadp(VectorSRegister d, VectorSRegister a, VectorSRegister b) { emit_int32( XVNMSUBADP_OPCODE | vsrt(d) | vsra(a) | vsrb(b)); }
+inline void Assembler::xvrdpi(    VectorSRegister d, VectorSRegister b)                  { emit_int32( XVRDPI_OPCODE  | vsrt(d) | vsrb(b)); }
+inline void Assembler::xvrdpim(   VectorSRegister d, VectorSRegister b)                  { emit_int32( XVRDPIM_OPCODE | vsrt(d) | vsrb(b)); }
+inline void Assembler::xvrdpip(   VectorSRegister d, VectorSRegister b)                  { emit_int32( XVRDPIP_OPCODE | vsrt(d) | vsrb(b)); }
+
 inline void Assembler::mtvrd(   VectorRegister d, Register a)               { emit_int32( MTVSRD_OPCODE  | vsrt(d->to_vsr()) | ra(a)); }
 inline void Assembler::mfvrd(   Register        a, VectorRegister d)         { emit_int32( MFVSRD_OPCODE  | vsrt(d->to_vsr()) | ra(a)); }
 inline void Assembler::mtvrwz(  VectorRegister  d, Register a)               { emit_int32( MTVSRWZ_OPCODE | vsrt(d->to_vsr()) | ra(a)); }
--- a/src/hotspot/cpu/ppc/ppc.ad	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/cpu/ppc/ppc.ad	Wed Oct 23 14:01:17 2019 -0400
@@ -972,6 +972,8 @@
   // To keep related declarations/definitions/uses close together,
   // we switch between source %{ }% and source_hpp %{ }% freely as needed.
 
+#include "opto/convertnode.hpp"
+
   // Returns true if Node n is followed by a MemBar node that
   // will do an acquire. If so, this node must not do the acquire
   // operation.
@@ -2272,6 +2274,7 @@
   case Op_AddVL:
   case Op_SubVL:
   case Op_MulVI:
+  case Op_RoundDoubleModeV:
     return SuperwordUseVSX;
   case Op_PopCountVI:
     return (SuperwordUseVSX && UsePopCountInstruction);
@@ -14454,6 +14457,53 @@
   ins_pipe(pipe_class_default);
 %}
 
+// Round Instructions
+instruct roundD_reg(regD dst, regD src, immI8 rmode) %{
+  match(Set dst (RoundDoubleMode src rmode));
+  format %{ "RoundDoubleMode $src,$rmode" %}
+  size(4);
+  ins_encode %{
+    switch ($rmode$$constant) {
+      case RoundDoubleModeNode::rmode_rint:
+        __ frin($dst$$FloatRegister, $src$$FloatRegister);
+        break;
+      case RoundDoubleModeNode::rmode_floor:
+        __ frim($dst$$FloatRegister, $src$$FloatRegister);
+        break;
+      case RoundDoubleModeNode::rmode_ceil:
+        __ frip($dst$$FloatRegister, $src$$FloatRegister);
+        break;
+      default:
+        ShouldNotReachHere();
+    }
+  %}
+  ins_pipe(pipe_class_default);
+%}
+
+// Vector Round Instructions
+instruct vround2D_reg(vecX dst, vecX src, immI8 rmode) %{
+  match(Set dst (RoundDoubleModeV src rmode));
+  predicate(n->as_Vector()->length() == 2);
+  format %{ "RoundDoubleModeV $src,$rmode" %}
+  size(4);
+  ins_encode %{
+    switch ($rmode$$constant) {
+      case RoundDoubleModeNode::rmode_rint:
+        __ xvrdpi($dst$$VectorSRegister, $src$$VectorSRegister);
+        break;
+      case RoundDoubleModeNode::rmode_floor:
+        __ xvrdpim($dst$$VectorSRegister, $src$$VectorSRegister);
+        break;
+      case RoundDoubleModeNode::rmode_ceil:
+        __ xvrdpip($dst$$VectorSRegister, $src$$VectorSRegister);
+        break;
+      default:
+        ShouldNotReachHere();
+    }
+  %}
+  ins_pipe(pipe_class_default);
+%}
+
 // Vector Negate Instructions
 
 instruct vneg4F_reg(vecX dst, vecX src) %{
--- a/src/hotspot/cpu/x86/gc/shenandoah/shenandoahBarrierSetAssembler_x86.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/cpu/x86/gc/shenandoah/shenandoahBarrierSetAssembler_x86.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -333,7 +333,7 @@
 #endif
 }
 
-void ShenandoahBarrierSetAssembler::load_reference_barrier_native(MacroAssembler* masm, Register dst) {
+void ShenandoahBarrierSetAssembler::load_reference_barrier_native(MacroAssembler* masm, Register dst, Address src) {
   if (!ShenandoahLoadRefBarrier) {
     return;
   }
@@ -341,6 +341,7 @@
   Label done;
   Label not_null;
   Label slow_path;
+  __ block_comment("load_reference_barrier_native { ");
 
   // null check
   __ testptr(dst, dst);
@@ -371,7 +372,7 @@
   __ bind(slow_path);
 
   if (dst != rax) {
-    __ xchgptr(dst, rax); // Move obj into rax and save rax into obj.
+    __ push(rax);
   }
   __ push(rcx);
   __ push(rdx);
@@ -388,8 +389,9 @@
   __ push(r15);
 #endif
 
-  __ movptr(rdi, rax);
-  __ call_VM_leaf(CAST_FROM_FN_PTR(address, ShenandoahRuntime::load_reference_barrier_native), rdi);
+  assert_different_registers(dst, rsi);
+  __ lea(rsi, src);
+  __ call_VM_leaf(CAST_FROM_FN_PTR(address, ShenandoahRuntime::load_reference_barrier_native), dst, rsi);
 
 #ifdef _LP64
   __ pop(r15);
@@ -407,10 +409,12 @@
   __ pop(rcx);
 
   if (dst != rax) {
-    __ xchgptr(rax, dst); // Swap back obj with rax.
+    __ movptr(dst, rax);
+    __ pop(rax);
   }
 
   __ bind(done);
+  __ block_comment("load_reference_barrier_native { ");
 }
 
 void ShenandoahBarrierSetAssembler::storeval_barrier(MacroAssembler* masm, Register dst, Register tmp) {
@@ -474,14 +478,43 @@
   bool is_traversal_mode = ShenandoahHeap::heap()->is_traversal_mode();
   bool keep_alive = ((decorators & AS_NO_KEEPALIVE) == 0) || is_traversal_mode;
 
+  Register result_dst = dst;
+  bool use_tmp1_for_dst = false;
+
+  if (on_oop) {
+    // We want to preserve src
+    if (dst == src.base() || dst == src.index()) {
+      // Use tmp1 for dst if possible, as it is not used in BarrierAssembler::load_at()
+      if (tmp1->is_valid() && tmp1 != src.base() && tmp1 != src.index()) {
+        dst = tmp1;
+        use_tmp1_for_dst = true;
+      } else {
+        dst = rdi;
+        __ push(dst);
+      }
+    }
+    assert_different_registers(dst, src.base(), src.index());
+  }
+
   BarrierSetAssembler::load_at(masm, decorators, type, dst, src, tmp1, tmp_thread);
+
   if (on_oop) {
     if (not_in_heap && !is_traversal_mode) {
-      load_reference_barrier_native(masm, dst);
+      load_reference_barrier_native(masm, dst, src);
     } else {
       load_reference_barrier(masm, dst);
     }
 
+    if (dst != result_dst) {
+      __ movptr(result_dst, dst);
+
+      if (!use_tmp1_for_dst) {
+        __ pop(dst);
+      }
+
+      dst = result_dst;
+    }
+
     if (ShenandoahKeepAliveBarrier && on_reference && keep_alive) {
       const Register thread = NOT_LP64(tmp_thread) LP64_ONLY(r15_thread);
       assert_different_registers(dst, tmp1, tmp_thread);
--- a/src/hotspot/cpu/x86/gc/shenandoah/shenandoahBarrierSetAssembler_x86.hpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/cpu/x86/gc/shenandoah/shenandoahBarrierSetAssembler_x86.hpp	Wed Oct 23 14:01:17 2019 -0400
@@ -76,7 +76,7 @@
 #endif
 
   void load_reference_barrier(MacroAssembler* masm, Register dst);
-  void load_reference_barrier_native(MacroAssembler* masm, Register dst);
+  void load_reference_barrier_native(MacroAssembler* masm, Register dst, Address src);
 
   void cmpxchg_oop(MacroAssembler* masm,
                    Register res, Address addr, Register oldval, Register newval,
--- a/src/hotspot/cpu/x86/macroAssembler_x86.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/cpu/x86/macroAssembler_x86.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -6352,7 +6352,7 @@
   movptr(result, str1);
   if (UseAVX >= 2) {
     cmpl(cnt1, stride);
-    jcc(Assembler::less, SCAN_TO_CHAR_LOOP);
+    jcc(Assembler::less, SCAN_TO_CHAR);
     cmpl(cnt1, 2*stride);
     jcc(Assembler::less, SCAN_TO_8_CHAR_INIT);
     movdl(vec1, ch);
@@ -6379,10 +6379,8 @@
   }
   bind(SCAN_TO_8_CHAR);
   cmpl(cnt1, stride);
-  if (UseAVX >= 2) {
-    jcc(Assembler::less, SCAN_TO_CHAR);
-  } else {
-    jcc(Assembler::less, SCAN_TO_CHAR_LOOP);
+  jcc(Assembler::less, SCAN_TO_CHAR);
+  if (UseAVX < 2) {
     movdl(vec1, ch);
     pshuflw(vec1, vec1, 0x00);
     pshufd(vec1, vec1, 0);
--- a/src/hotspot/cpu/x86/macroAssembler_x86.hpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/cpu/x86/macroAssembler_x86.hpp	Wed Oct 23 14:01:17 2019 -0400
@@ -114,7 +114,8 @@
       // short offset operators (jmp and jcc)
       char* disp = (char*) &branch[1];
       int imm8 = target - (address) &disp[1];
-      guarantee(this->is8bit(imm8), "Short forward jump exceeds 8-bit offset at %s:%d", file, line);
+      guarantee(this->is8bit(imm8), "Short forward jump exceeds 8-bit offset at %s:%d",
+                file == NULL ? "<NULL>" : file, line);
       *disp = imm8;
     } else {
       int* disp = (int*) &branch[(op == 0x0F || op == 0xC7)? 2: 1];
--- a/src/hotspot/cpu/x86/sharedRuntime_x86_32.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/cpu/x86/sharedRuntime_x86_32.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -1304,6 +1304,97 @@
   }
 }
 
+// Registers need to be saved for runtime call
+static Register caller_saved_registers[] = {
+  rcx, rdx, rsi, rdi
+};
+
+// Save caller saved registers except r1 and r2
+static void save_registers_except(MacroAssembler* masm, Register r1, Register r2) {
+  int reg_len = (int)(sizeof(caller_saved_registers) / sizeof(Register));
+  for (int index = 0; index < reg_len; index ++) {
+    Register this_reg = caller_saved_registers[index];
+    if (this_reg != r1 && this_reg != r2) {
+      __ push(this_reg);
+    }
+  }
+}
+
+// Restore caller saved registers except r1 and r2
+static void restore_registers_except(MacroAssembler* masm, Register r1, Register r2) {
+  int reg_len = (int)(sizeof(caller_saved_registers) / sizeof(Register));
+  for (int index = reg_len - 1; index >= 0; index --) {
+    Register this_reg = caller_saved_registers[index];
+    if (this_reg != r1 && this_reg != r2) {
+      __ pop(this_reg);
+    }
+  }
+}
+
+// Pin object, return pinned object or null in rax
+static void gen_pin_object(MacroAssembler* masm,
+                           Register thread, VMRegPair reg) {
+  __ block_comment("gen_pin_object {");
+
+  Label is_null;
+  Register tmp_reg = rax;
+  VMRegPair tmp(tmp_reg->as_VMReg());
+  if (reg.first()->is_stack()) {
+    // Load the arg up from the stack
+    simple_move32(masm, reg, tmp);
+    reg = tmp;
+  } else {
+    __ movl(tmp_reg, reg.first()->as_Register());
+  }
+  __ testptr(reg.first()->as_Register(), reg.first()->as_Register());
+  __ jccb(Assembler::equal, is_null);
+
+  // Save registers that may be used by runtime call
+  Register arg = reg.first()->is_Register() ? reg.first()->as_Register() : noreg;
+  save_registers_except(masm, arg, thread);
+
+  __ call_VM_leaf(
+    CAST_FROM_FN_PTR(address, SharedRuntime::pin_object),
+    thread, reg.first()->as_Register());
+
+  // Restore saved registers
+  restore_registers_except(masm, arg, thread);
+
+  __ bind(is_null);
+  __ block_comment("} gen_pin_object");
+}
+
+// Unpin object
+static void gen_unpin_object(MacroAssembler* masm,
+                             Register thread, VMRegPair reg) {
+  __ block_comment("gen_unpin_object {");
+  Label is_null;
+
+  // temp register
+  __ push(rax);
+  Register tmp_reg = rax;
+  VMRegPair tmp(tmp_reg->as_VMReg());
+
+  simple_move32(masm, reg, tmp);
+
+  __ testptr(rax, rax);
+  __ jccb(Assembler::equal, is_null);
+
+  // Save registers that may be used by runtime call
+  Register arg = reg.first()->is_Register() ? reg.first()->as_Register() : noreg;
+  save_registers_except(masm, arg, thread);
+
+  __ call_VM_leaf(
+    CAST_FROM_FN_PTR(address, SharedRuntime::unpin_object),
+    thread, rax);
+
+  // Restore saved registers
+  restore_registers_except(masm, arg, thread);
+  __ bind(is_null);
+  __ pop(rax);
+  __ block_comment("} gen_unpin_object");
+}
+
 // Check GCLocker::needs_gc and enter the runtime if it's true.  This
 // keeps a new JNI critical region from starting until a GC has been
 // forced.  Save down any oops in registers and describe them in an
@@ -1837,7 +1928,7 @@
 
   __ get_thread(thread);
 
-  if (is_critical_native) {
+  if (is_critical_native && !Universe::heap()->supports_object_pinning()) {
     check_needs_gc_for_critical_native(masm, thread, stack_slots, total_c_args, total_in_args,
                                        oop_handle_offset, oop_maps, in_regs, in_sig_bt);
   }
@@ -1875,6 +1966,11 @@
   //
   OopMap* map = new OopMap(stack_slots * 2, 0 /* arg_slots*/);
 
+  // Inbound arguments that need to be pinned for critical natives
+  GrowableArray<int> pinned_args(total_in_args);
+  // Current stack slot for storing register based array argument
+  int pinned_slot = oop_handle_offset;
+
   // Mark location of rbp,
   // map->set_callee_saved(VMRegImpl::stack2reg( stack_slots - 2), stack_slots * 2, 0, rbp->as_VMReg());
 
@@ -1886,7 +1982,28 @@
     switch (in_sig_bt[i]) {
       case T_ARRAY:
         if (is_critical_native) {
-          unpack_array_argument(masm, in_regs[i], in_elem_bt[i], out_regs[c_arg + 1], out_regs[c_arg]);
+          VMRegPair in_arg = in_regs[i];
+          if (Universe::heap()->supports_object_pinning()) {
+            // gen_pin_object handles save and restore
+            // of any clobbered registers
+            gen_pin_object(masm, thread, in_arg);
+            pinned_args.append(i);
+
+            // rax has pinned array
+            VMRegPair result_reg(rax->as_VMReg());
+            if (!in_arg.first()->is_stack()) {
+              assert(pinned_slot <= stack_slots, "overflow");
+              simple_move32(masm, result_reg, VMRegImpl::stack2reg(pinned_slot));
+              pinned_slot += VMRegImpl::slots_per_word;
+            } else {
+              // Write back pinned value, it will be used to unpin this argument
+              __ movptr(Address(rbp, reg2offset_in(in_arg.first())), result_reg.first()->as_Register());
+            }
+            // We have the array in register, use it
+            in_arg = result_reg;
+          }
+
+          unpack_array_argument(masm, in_arg, in_elem_bt[i], out_regs[c_arg + 1], out_regs[c_arg]);
           c_arg++;
           break;
         }
@@ -2079,6 +2196,26 @@
   default       : ShouldNotReachHere();
   }
 
+  // unpin pinned arguments
+  pinned_slot = oop_handle_offset;
+  if (pinned_args.length() > 0) {
+    // save return value that may be overwritten otherwise.
+    save_native_result(masm, ret_type, stack_slots);
+    for (int index = 0; index < pinned_args.length(); index ++) {
+      int i = pinned_args.at(index);
+      assert(pinned_slot <= stack_slots, "overflow");
+      if (!in_regs[i].first()->is_stack()) {
+        int offset = pinned_slot * VMRegImpl::stack_slot_size;
+        __ movl(in_regs[i].first()->as_Register(), Address(rsp, offset));
+        pinned_slot += VMRegImpl::slots_per_word;
+      }
+      // gen_pin_object handles save and restore
+      // of any other clobbered registers
+      gen_unpin_object(masm, thread, in_regs[i]);
+    }
+    restore_native_result(masm, ret_type, stack_slots);
+  }
+
   // Switch thread to "native transition" state before reading the synchronization state.
   // This additional state is necessary because reading and testing the synchronization
   // state is not atomic w.r.t. GC, as this scenario demonstrates:
--- a/src/hotspot/cpu/x86/x86.ad	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/cpu/x86/x86.ad	Wed Oct 23 14:01:17 2019 -0400
@@ -1280,7 +1280,7 @@
     case Op_AbsVS:
     case Op_AbsVI:
     case Op_AddReductionVI:
-      if (UseSSE < 3) // requires at least SSE3
+      if (UseSSE < 3 || !VM_Version::supports_ssse3()) // requires at least SSSE3
         ret_value = false;
       break;
     case Op_MulReductionVI:
--- a/src/hotspot/os/aix/os_aix.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/os/aix/os_aix.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -1034,8 +1034,6 @@
 }
 
 bool os::supports_vtime() { return true; }
-bool os::enable_vtime()   { return false; }
-bool os::vtime_enabled()  { return false; }
 
 double os::elapsedVTime() {
   struct rusage usage;
@@ -3625,11 +3623,6 @@
   return;
 }
 
-bool os::distribute_processes(uint length, uint* distribution) {
-  // Not yet implemented.
-  return false;
-}
-
 bool os::bind_to_processor(uint processor_id) {
   // Not yet implemented.
   return false;
--- a/src/hotspot/os/aix/os_aix.hpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/os/aix/os_aix.hpp	Wed Oct 23 14:01:17 2019 -0400
@@ -44,7 +44,6 @@
 
   static julong _physical_memory;
   static pthread_t _main_thread;
-  static Mutex* _createThread_lock;
   static int _page_size;
 
   // -1 = uninitialized, 0 = AIX, 1 = OS/400 (PASE)
@@ -90,8 +89,6 @@
  public:
   static void init_thread_fpu_state();
   static pthread_t main_thread(void)                                { return _main_thread; }
-  static void set_createThread_lock(Mutex* lk)                      { _createThread_lock = lk; }
-  static Mutex* createThread_lock(void)                             { return _createThread_lock; }
   static void hotspot_sigmask(Thread* thread);
 
   // Given an address, returns the size of the page backing that address
--- a/src/hotspot/os/aix/os_aix.inline.hpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/os/aix/os_aix.inline.hpp	Wed Oct 23 14:01:17 2019 -0400
@@ -64,8 +64,6 @@
   ::dlclose(lib);
 }
 
-inline const int os::default_file_open_flags() { return 0;}
-
 inline jlong os::lseek(int fd, jlong offset, int whence) {
   return (jlong) ::lseek64(fd, offset, whence);
 }
--- a/src/hotspot/os/bsd/os_bsd.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/os/bsd/os_bsd.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -877,8 +877,6 @@
 }
 
 bool os::supports_vtime() { return true; }
-bool os::enable_vtime()   { return false; }
-bool os::vtime_enabled()  { return false; }
 
 double os::elapsedVTime() {
   // better than nothing, but not much
@@ -3282,11 +3280,6 @@
 #endif
 }
 
-bool os::distribute_processes(uint length, uint* distribution) {
-  // Not yet implemented.
-  return false;
-}
-
 bool os::bind_to_processor(uint processor_id) {
   // Not yet implemented.
   return false;
--- a/src/hotspot/os/bsd/os_bsd.inline.hpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/os/bsd/os_bsd.inline.hpp	Wed Oct 23 14:01:17 2019 -0400
@@ -67,8 +67,6 @@
   ::dlclose(lib);
 }
 
-inline const int os::default_file_open_flags() { return 0;}
-
 inline jlong os::lseek(int fd, jlong offset, int whence) {
   return (jlong) ::lseek(fd, offset, whence);
 }
--- a/src/hotspot/os/linux/gc/z/zNUMA_linux.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/os/linux/gc/z/zNUMA_linux.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -22,7 +22,7 @@
  */
 
 #include "gc/z/zErrno.hpp"
-#include "gc/z/zCPU.hpp"
+#include "gc/z/zCPU.inline.hpp"
 #include "gc/z/zNUMA.hpp"
 #include "runtime/globals.hpp"
 #include "runtime/os.hpp"
--- a/src/hotspot/os/linux/osContainer_linux.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/os/linux/osContainer_linux.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -131,14 +131,34 @@
      * hierarchy. If set to true consider also memory.stat
      * file if everything else seems unlimited */
     bool _uses_mem_hierarchy;
+    volatile jlong _memory_limit_in_bytes;
+    volatile jlong _next_check_counter;
 
  public:
     CgroupMemorySubsystem(char *root, char *mountpoint) : CgroupSubsystem::CgroupSubsystem(root, mountpoint) {
       _uses_mem_hierarchy = false;
+      _memory_limit_in_bytes = -1;
+      _next_check_counter = min_jlong;
+
     }
 
     bool is_hierarchical() { return _uses_mem_hierarchy; }
     void set_hierarchical(bool value) { _uses_mem_hierarchy = value; }
+
+    bool should_check_memory_limit() {
+      return os::elapsed_counter() > _next_check_counter;
+    }
+    jlong memory_limit_in_bytes() { return _memory_limit_in_bytes; }
+    void set_memory_limit_in_bytes(jlong value) {
+      _memory_limit_in_bytes = value;
+      // max memory limit is unlikely to change, but we want to remain
+      // responsive to configuration changes. A very short (20ms) grace time
+      // between re-read avoids excessive overhead during startup without
+      // significantly reducing the VMs ability to promptly react to reduced
+      // memory availability
+      _next_check_counter = os::elapsed_counter() + (NANOSECS_PER_SEC/50);
+    }
+
 };
 
 CgroupMemorySubsystem* memory = NULL;
@@ -461,6 +481,16 @@
  *    OSCONTAINER_ERROR for not supported
  */
 jlong OSContainer::memory_limit_in_bytes() {
+  if (!memory->should_check_memory_limit()) {
+    return memory->memory_limit_in_bytes();
+  }
+  jlong memory_limit = read_memory_limit_in_bytes();
+  // Update CgroupMemorySubsystem to avoid re-reading container settings too often
+  memory->set_memory_limit_in_bytes(memory_limit);
+  return memory_limit;
+}
+
+jlong OSContainer::read_memory_limit_in_bytes() {
   GET_CONTAINER_INFO(julong, memory, "/memory.limit_in_bytes",
                      "Memory Limit is: " JULONG_FORMAT, JULONG_FORMAT, memlimit);
 
--- a/src/hotspot/os/linux/osContainer_linux.hpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/os/linux/osContainer_linux.hpp	Wed Oct 23 14:01:17 2019 -0400
@@ -36,6 +36,7 @@
  private:
   static bool   _is_initialized;
   static bool   _is_containerized;
+  static jlong read_memory_limit_in_bytes();
 
  public:
   static void init();
--- a/src/hotspot/os/linux/os_linux.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/os/linux/os_linux.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -148,11 +148,9 @@
 
 int (*os::Linux::_pthread_getcpuclockid)(pthread_t, clockid_t *) = NULL;
 int (*os::Linux::_pthread_setname_np)(pthread_t, const char*) = NULL;
-Mutex* os::Linux::_createThread_lock = NULL;
 pthread_t os::Linux::_main_thread;
 int os::Linux::_page_size = -1;
 bool os::Linux::_supports_fast_thread_cpu_time = false;
-uint32_t os::Linux::_os_version = 0;
 const char * os::Linux::_glibc_version = NULL;
 const char * os::Linux::_libpthread_version = NULL;
 
@@ -1364,8 +1362,6 @@
 }
 
 bool os::supports_vtime() { return true; }
-bool os::enable_vtime()   { return false; }
-bool os::vtime_enabled()  { return false; }
 
 double os::elapsedVTime() {
   struct rusage usage;
@@ -4823,48 +4819,6 @@
   return (tp.tv_sec * NANOSECS_PER_SEC) + tp.tv_nsec;
 }
 
-void os::Linux::initialize_os_info() {
-  assert(_os_version == 0, "OS info already initialized");
-
-  struct utsname _uname;
-
-  uint32_t major;
-  uint32_t minor;
-  uint32_t fix;
-
-  int rc;
-
-  // Kernel version is unknown if
-  // verification below fails.
-  _os_version = 0x01000000;
-
-  rc = uname(&_uname);
-  if (rc != -1) {
-
-    rc = sscanf(_uname.release,"%d.%d.%d", &major, &minor, &fix);
-    if (rc == 3) {
-
-      if (major < 256 && minor < 256 && fix < 256) {
-        // Kernel version format is as expected,
-        // set it overriding unknown state.
-        _os_version = (major << 16) |
-                      (minor << 8 ) |
-                      (fix   << 0 ) ;
-      }
-    }
-  }
-}
-
-uint32_t os::Linux::os_version() {
-  assert(_os_version != 0, "not initialized");
-  return _os_version & 0x00FFFFFF;
-}
-
-bool os::Linux::os_version_is_known() {
-  assert(_os_version != 0, "not initialized");
-  return _os_version & 0x01000000 ? false : true;
-}
-
 /////
 // glibc on Linux platform uses non-documented flag
 // to indicate, that some special sort of signal
@@ -5084,8 +5038,6 @@
 
   Linux::initialize_system_info();
 
-  Linux::initialize_os_info();
-
   os::Linux::CPUPerfTicks pticks;
   bool res = os::Linux::get_tick_information(&pticks, -1);
 
@@ -5262,9 +5214,6 @@
     }
   }
 
-  // Initialize lock used to serialize thread creation (see os::create_thread)
-  Linux::set_createThread_lock(new Mutex(Mutex::leaf, "createThread_lock", false));
-
   // at-exit methods are called in the reverse order of their registration.
   // atexit functions are called on return from main or as a result of a
   // call to exit(3C). There can be only 32 of these functions registered
@@ -5465,11 +5414,6 @@
   }
 }
 
-bool os::distribute_processes(uint length, uint* distribution) {
-  // Not yet implemented.
-  return false;
-}
-
 bool os::bind_to_processor(uint processor_id) {
   // Not yet implemented.
   return false;
--- a/src/hotspot/os/linux/os_linux.hpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/os/linux/os_linux.hpp	Wed Oct 23 14:01:17 2019 -0400
@@ -55,20 +55,10 @@
   static GrowableArray<int>* _cpu_to_node;
   static GrowableArray<int>* _nindex_to_node;
 
-  // 0x00000000 = uninitialized,
-  // 0x01000000 = kernel version unknown,
-  // otherwise a 32-bit number:
-  // Ox00AABBCC
-  // AA, Major Version
-  // BB, Minor Version
-  // CC, Fix   Version
-  static uint32_t _os_version;
-
  protected:
 
   static julong _physical_memory;
   static pthread_t _main_thread;
-  static Mutex* _createThread_lock;
   static int _page_size;
 
   static julong available_memory();
@@ -136,8 +126,6 @@
   // returns kernel thread id (similar to LWP id on Solaris), which can be
   // used to access /proc
   static pid_t gettid();
-  static void set_createThread_lock(Mutex* lk)                      { _createThread_lock = lk; }
-  static Mutex* createThread_lock(void)                             { return _createThread_lock; }
   static void hotspot_sigmask(Thread* thread);
 
   static address   initial_thread_stack_bottom(void)                { return _initial_thread_stack_bottom; }
@@ -196,7 +184,6 @@
 
   // Stack overflow handling
   static bool manually_expand_stack(JavaThread * t, address addr);
-  static int max_register_window_saves_before_flushing();
 
   // fast POSIX clocks support
   static void fast_thread_clock_init(void);
@@ -211,10 +198,6 @@
 
   static jlong fast_thread_cpu_time(clockid_t clockid);
 
-  static void initialize_os_info();
-  static bool os_version_is_known();
-  static uint32_t os_version();
-
   // Stack repair handling
 
   // none present
--- a/src/hotspot/os/linux/os_linux.inline.hpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/os/linux/os_linux.inline.hpp	Wed Oct 23 14:01:17 2019 -0400
@@ -59,8 +59,6 @@
   ::dlclose(lib);
 }
 
-inline const int os::default_file_open_flags() { return 0;}
-
 inline jlong os::lseek(int fd, jlong offset, int whence) {
   return (jlong) ::lseek64(fd, offset, whence);
 }
--- a/src/hotspot/os/posix/os_posix.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/os/posix/os_posix.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -167,11 +167,6 @@
   return n;
 }
 
-bool os::is_debugger_attached() {
-  // not implemented
-  return false;
-}
-
 void os::wait_for_keypress_at_exit(void) {
   // don't do anything on posix platforms
   return;
@@ -690,6 +685,9 @@
 #endif
   {  SIGHUP,      "SIGHUP" },
   {  SIGILL,      "SIGILL" },
+#ifdef SIGINFO
+  {  SIGINFO,     "SIGINFO" },
+#endif
   {  SIGINT,      "SIGINT" },
 #ifdef SIGIO
   {  SIGIO,       "SIGIO" },
--- a/src/hotspot/os/solaris/os_solaris.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/os/solaris/os_solaris.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -265,8 +265,6 @@
   }
 }
 
-static int _processors_online = 0;
-
 jint os::Solaris::_os_thread_limit = 0;
 volatile jint os::Solaris::_os_thread_count = 0;
 
@@ -291,7 +289,6 @@
 
 void os::Solaris::initialize_system_info() {
   set_processor_count(sysconf(_SC_NPROCESSORS_CONF));
-  _processors_online = sysconf(_SC_NPROCESSORS_ONLN);
   _physical_memory = (julong)sysconf(_SC_PHYS_PAGES) *
                                      (julong)sysconf(_SC_PAGESIZE);
 }
@@ -320,7 +317,6 @@
     // Query the number of cpus available to us.
     if (pset_info(pset, NULL, &pset_cpus, NULL) == 0) {
       assert(pset_cpus > 0 && pset_cpus <= online_cpus, "sanity check");
-      _processors_online = pset_cpus;
       return pset_cpus;
     }
   }
@@ -328,136 +324,6 @@
   return online_cpus;
 }
 
-static bool find_processors_in_pset(psetid_t        pset,
-                                    processorid_t** id_array,
-                                    uint_t*         id_length) {
-  bool result = false;
-  // Find the number of processors in the processor set.
-  if (pset_info(pset, NULL, id_length, NULL) == 0) {
-    // Make up an array to hold their ids.
-    *id_array = NEW_C_HEAP_ARRAY(processorid_t, *id_length, mtInternal);
-    // Fill in the array with their processor ids.
-    if (pset_info(pset, NULL, id_length, *id_array) == 0) {
-      result = true;
-    }
-  }
-  return result;
-}
-
-// Callers of find_processors_online() must tolerate imprecise results --
-// the system configuration can change asynchronously because of DR
-// or explicit psradm operations.
-//
-// We also need to take care that the loop (below) terminates as the
-// number of processors online can change between the _SC_NPROCESSORS_ONLN
-// request and the loop that builds the list of processor ids.   Unfortunately
-// there's no reliable way to determine the maximum valid processor id,
-// so we use a manifest constant, MAX_PROCESSOR_ID, instead.  See p_online
-// man pages, which claim the processor id set is "sparse, but
-// not too sparse".  MAX_PROCESSOR_ID is used to ensure that we eventually
-// exit the loop.
-//
-// In the future we'll be able to use sysconf(_SC_CPUID_MAX), but that's
-// not available on S8.0.
-
-static bool find_processors_online(processorid_t** id_array,
-                                   uint*           id_length) {
-  const processorid_t MAX_PROCESSOR_ID = 100000;
-  // Find the number of processors online.
-  *id_length = sysconf(_SC_NPROCESSORS_ONLN);
-  // Make up an array to hold their ids.
-  *id_array = NEW_C_HEAP_ARRAY(processorid_t, *id_length, mtInternal);
-  // Processors need not be numbered consecutively.
-  long found = 0;
-  processorid_t next = 0;
-  while (found < *id_length && next < MAX_PROCESSOR_ID) {
-    processor_info_t info;
-    if (processor_info(next, &info) == 0) {
-      // NB, PI_NOINTR processors are effectively online ...
-      if (info.pi_state == P_ONLINE || info.pi_state == P_NOINTR) {
-        (*id_array)[found] = next;
-        found += 1;
-      }
-    }
-    next += 1;
-  }
-  if (found < *id_length) {
-    // The loop above didn't identify the expected number of processors.
-    // We could always retry the operation, calling sysconf(_SC_NPROCESSORS_ONLN)
-    // and re-running the loop, above, but there's no guarantee of progress
-    // if the system configuration is in flux.  Instead, we just return what
-    // we've got.  Note that in the worst case find_processors_online() could
-    // return an empty set.  (As a fall-back in the case of the empty set we
-    // could just return the ID of the current processor).
-    *id_length = found;
-  }
-
-  return true;
-}
-
-static bool assign_distribution(processorid_t* id_array,
-                                uint           id_length,
-                                uint*          distribution,
-                                uint           distribution_length) {
-  // We assume we can assign processorid_t's to uint's.
-  assert(sizeof(processorid_t) == sizeof(uint),
-         "can't convert processorid_t to uint");
-  // Quick check to see if we won't succeed.
-  if (id_length < distribution_length) {
-    return false;
-  }
-  // Assign processor ids to the distribution.
-  // Try to shuffle processors to distribute work across boards,
-  // assuming 4 processors per board.
-  const uint processors_per_board = ProcessDistributionStride;
-  // Find the maximum processor id.
-  processorid_t max_id = 0;
-  for (uint m = 0; m < id_length; m += 1) {
-    max_id = MAX2(max_id, id_array[m]);
-  }
-  // The next id, to limit loops.
-  const processorid_t limit_id = max_id + 1;
-  // Make up markers for available processors.
-  bool* available_id = NEW_C_HEAP_ARRAY(bool, limit_id, mtInternal);
-  for (uint c = 0; c < limit_id; c += 1) {
-    available_id[c] = false;
-  }
-  for (uint a = 0; a < id_length; a += 1) {
-    available_id[id_array[a]] = true;
-  }
-  // Step by "boards", then by "slot", copying to "assigned".
-  // NEEDS_CLEANUP: The assignment of processors should be stateful,
-  //                remembering which processors have been assigned by
-  //                previous calls, etc., so as to distribute several
-  //                independent calls of this method.  What we'd like is
-  //                It would be nice to have an API that let us ask
-  //                how many processes are bound to a processor,
-  //                but we don't have that, either.
-  //                In the short term, "board" is static so that
-  //                subsequent distributions don't all start at board 0.
-  static uint board = 0;
-  uint assigned = 0;
-  // Until we've found enough processors ....
-  while (assigned < distribution_length) {
-    // ... find the next available processor in the board.
-    for (uint slot = 0; slot < processors_per_board; slot += 1) {
-      uint try_id = board * processors_per_board + slot;
-      if ((try_id < limit_id) && (available_id[try_id] == true)) {
-        distribution[assigned] = try_id;
-        available_id[try_id] = false;
-        assigned += 1;
-        break;
-      }
-    }
-    board += 1;
-    if (board * processors_per_board + 0 >= limit_id) {
-      board = 0;
-    }
-  }
-  FREE_C_HEAP_ARRAY(bool, available_id);
-  return true;
-}
-
 void os::set_native_thread_name(const char *name) {
   if (Solaris::_pthread_setname_np != NULL) {
     // Only the first 31 bytes of 'name' are processed by pthread_setname_np
@@ -470,31 +336,6 @@
   }
 }
 
-bool os::distribute_processes(uint length, uint* distribution) {
-  bool result = false;
-  // Find the processor id's of all the available CPUs.
-  processorid_t* id_array  = NULL;
-  uint           id_length = 0;
-  // There are some races between querying information and using it,
-  // since processor sets can change dynamically.
-  psetid_t pset = PS_NONE;
-  // Are we running in a processor set?
-  if ((pset_bind(PS_QUERY, P_PID, P_MYID, &pset) == 0) && pset != PS_NONE) {
-    result = find_processors_in_pset(pset, &id_array, &id_length);
-  } else {
-    result = find_processors_online(&id_array, &id_length);
-  }
-  if (result == true) {
-    if (id_length >= length) {
-      result = assign_distribution(id_array, id_length, distribution, length);
-    } else {
-      result = false;
-    }
-  }
-  FREE_C_HEAP_ARRAY(processorid_t, id_array);
-  return result;
-}
-
 bool os::bind_to_processor(uint processor_id) {
   // We assume that a processorid_t can be stored in a uint.
   assert(sizeof(uint) == sizeof(processorid_t),
@@ -1237,8 +1078,6 @@
 }
 
 bool os::supports_vtime() { return true; }
-bool os::enable_vtime() { return false; }
-bool os::vtime_enabled() { return false; }
 
 double os::elapsedVTime() {
   return (double)gethrvtime() / (double)hrtime_hz;
--- a/src/hotspot/os/solaris/os_solaris.hpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/os/solaris/os_solaris.hpp	Wed Oct 23 14:01:17 2019 -0400
@@ -271,10 +271,6 @@
 
   static void correct_stack_boundaries_for_primordial_thread(Thread* thr);
 
-  // Stack overflow handling
-
-  static int max_register_window_saves_before_flushing();
-
   // Stack repair handling
 
   // none present
--- a/src/hotspot/os/solaris/os_solaris.inline.hpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/os/solaris/os_solaris.inline.hpp	Wed Oct 23 14:01:17 2019 -0400
@@ -61,8 +61,6 @@
 
 inline void os::dll_unload(void *lib) { ::dlclose(lib); }
 
-inline const int os::default_file_open_flags() { return 0;}
-
 //////////////////////////////////////////////////////////////////////////////
 ////////////////////////////////////////////////////////////////////////////////
 
--- a/src/hotspot/os/windows/os_windows.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/os/windows/os_windows.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -826,11 +826,6 @@
   } __except(EXCEPTION_EXECUTE_HANDLER) {}
 }
 
-bool os::distribute_processes(uint length, uint* distribution) {
-  // Not yet implemented.
-  return false;
-}
-
 bool os::bind_to_processor(uint processor_id) {
   // Not yet implemented.
   return false;
@@ -911,8 +906,6 @@
 }
 
 bool os::supports_vtime() { return true; }
-bool os::enable_vtime() { return false; }
-bool os::vtime_enabled() { return false; }
 
 double os::elapsedVTime() {
   FILETIME created;
@@ -3904,12 +3897,6 @@
   _setmode(_fileno(stderr), _O_BINARY);
 }
 
-
-bool os::is_debugger_attached() {
-  return IsDebuggerPresent() ? true : false;
-}
-
-
 void os::wait_for_keypress_at_exit(void) {
   if (PauseAtExit) {
     fprintf(stderr, "Press any key to continue...\n");
--- a/src/hotspot/os/windows/os_windows.inline.hpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/os/windows/os_windows.inline.hpp	Wed Oct 23 14:01:17 2019 -0400
@@ -30,8 +30,6 @@
 
 inline const char* os::dll_file_extension()            { return ".dll"; }
 
-inline const int os::default_file_open_flags() { return O_BINARY | O_NOINHERIT;}
-
 inline void  os::dll_unload(void *lib) {
   ::FreeLibrary((HMODULE)lib);
 }
--- a/src/hotspot/os_cpu/solaris_sparc/os_solaris_sparc.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/os_cpu/solaris_sparc/os_solaris_sparc.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -86,12 +86,6 @@
 size_t os::Posix::_java_thread_min_stack_allowed = 86 * K;
 size_t os::Posix::_vm_internal_thread_min_stack_allowed = 128 * K;
 
-int os::Solaris::max_register_window_saves_before_flushing() {
-  // We should detect this at run time. For now, filling
-  // in with a constant.
-  return 8;
-}
-
 static void handle_unflushed_register_windows(gwindows_t *win) {
   int restore_count = win->wbcnt;
   int i;
--- a/src/hotspot/share/aot/aotCodeHeap.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/aot/aotCodeHeap.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -93,7 +93,7 @@
   Handle protection_domain(thread, caller->method_holder()->protection_domain());
 
   // Ignore wrapping L and ;
-  if (name[0] == 'L') {
+  if (name[0] == JVM_SIGNATURE_CLASS) {
     assert(len > 2, "small name %s", name);
     name++;
     len -= 2;
--- a/src/hotspot/share/c1/c1_InstructionPrinter.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/c1/c1_InstructionPrinter.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1999, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1999, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -33,19 +33,11 @@
 #ifndef PRODUCT
 
 const char* InstructionPrinter::basic_type_name(BasicType type) {
-  switch (type) {
-    case T_BOOLEAN: return "boolean";
-    case T_BYTE   : return "byte";
-    case T_CHAR   : return "char";
-    case T_SHORT  : return "short";
-    case T_INT    : return "int";
-    case T_LONG   : return "long";
-    case T_FLOAT  : return "float";
-    case T_DOUBLE : return "double";
-    case T_ARRAY  : return "array";
-    case T_OBJECT : return "object";
-    default       : return "???";
+  const char* n = type2name(type);
+  if (n == NULL || type > T_VOID) {
+    return "???";
   }
+  return n;
 }
 
 
--- a/src/hotspot/share/ci/ciEnv.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/ci/ciEnv.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -413,8 +413,8 @@
 
   // Now we need to check the SystemDictionary
   Symbol* sym = name->get_symbol();
-  if (sym->char_at(0) == 'L' &&
-    sym->char_at(sym->utf8_length()-1) == ';') {
+  if (sym->char_at(0) == JVM_SIGNATURE_CLASS &&
+      sym->char_at(sym->utf8_length()-1) == JVM_SIGNATURE_ENDCLASS) {
     // This is a name from a signature.  Strip off the trimmings.
     // Call recursive to keep scope of strippedsym.
     TempNewSymbol strippedsym = SymbolTable::new_symbol(sym->as_utf8()+1,
@@ -440,7 +440,7 @@
 
   // setup up the proper type to return on OOM
   ciKlass* fail_type;
-  if (sym->char_at(0) == '[') {
+  if (sym->char_at(0) == JVM_SIGNATURE_ARRAY) {
     fail_type = _unloaded_ciobjarrayklass;
   } else {
     fail_type = _unloaded_ciinstance_klass;
@@ -466,8 +466,8 @@
   // we must build an array type around it.  The CI requires array klasses
   // to be loaded if their element klasses are loaded, except when memory
   // is exhausted.
-  if (sym->char_at(0) == '[' &&
-      (sym->char_at(1) == '[' || sym->char_at(1) == 'L')) {
+  if (sym->char_at(0) == JVM_SIGNATURE_ARRAY &&
+      (sym->char_at(1) == JVM_SIGNATURE_ARRAY || sym->char_at(1) == JVM_SIGNATURE_CLASS)) {
     // We have an unloaded array.
     // Build it on the fly if the element class exists.
     TempNewSymbol elem_sym = SymbolTable::new_symbol(sym->as_utf8()+1,
--- a/src/hotspot/share/ci/ciInstanceKlass.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/ci/ciInstanceKlass.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1999, 2018, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1999, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -116,7 +116,7 @@
                                  jobject loader, jobject protection_domain)
   : ciKlass(name, T_OBJECT)
 {
-  assert(name->char_at(0) != '[', "not an instance klass");
+  assert(name->char_at(0) != JVM_SIGNATURE_ARRAY, "not an instance klass");
   _init_state = (InstanceKlass::ClassState)0;
   _nonstatic_field_size = -1;
   _has_nonstatic_fields = false;
--- a/src/hotspot/share/ci/ciObjArrayKlass.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/ci/ciObjArrayKlass.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1999, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1999, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -112,16 +112,16 @@
   Symbol* base_name_sym = element_name->get_symbol();
   char* name;
 
-  if (base_name_sym->char_at(0) == '[' ||
-      (base_name_sym->char_at(0) == 'L' &&  // watch package name 'Lxx'
-       base_name_sym->char_at(element_len-1) == ';')) {
+  if (base_name_sym->char_at(0) == JVM_SIGNATURE_ARRAY ||
+      (base_name_sym->char_at(0) == JVM_SIGNATURE_CLASS &&  // watch package name 'Lxx'
+       base_name_sym->char_at(element_len-1) == JVM_SIGNATURE_ENDCLASS)) {
 
     int new_len = element_len + dimension + 1; // for the ['s and '\0'
     name = CURRENT_THREAD_ENV->name_buffer(new_len);
 
     int pos = 0;
     for ( ; pos < dimension; pos++) {
-      name[pos] = '[';
+      name[pos] = JVM_SIGNATURE_ARRAY;
     }
     strncpy(name+pos, (char*)element_name->base(), element_len);
     name[new_len-1] = '\0';
@@ -133,11 +133,11 @@
     name = CURRENT_THREAD_ENV->name_buffer(new_len);
     int pos = 0;
     for ( ; pos < dimension; pos++) {
-      name[pos] = '[';
+      name[pos] = JVM_SIGNATURE_ARRAY;
     }
-    name[pos++] = 'L';
+    name[pos++] = JVM_SIGNATURE_CLASS;
     strncpy(name+pos, (char*)element_name->base(), element_len);
-    name[new_len-2] = ';';
+    name[new_len-2] = JVM_SIGNATURE_ENDCLASS;
     name[new_len-1] = '\0';
   }
   return ciSymbol::make(name);
--- a/src/hotspot/share/ci/ciObjectFactory.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/ci/ciObjectFactory.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -486,7 +486,7 @@
 
   // Two cases: this is an unloaded ObjArrayKlass or an
   // unloaded InstanceKlass.  Deal with both.
-  if (name->char_at(0) == '[') {
+  if (name->char_at(0) == JVM_SIGNATURE_ARRAY) {
     // Decompose the name.'
     FieldArrayInfo fd;
     BasicType element_type = FieldType::get_array_info(name->get_symbol(),
--- a/src/hotspot/share/ci/ciReplay.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/ci/ciReplay.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -814,18 +814,18 @@
     }
 
     oop java_mirror = k->java_mirror();
-    if (field_signature[0] == '[') {
+    if (field_signature[0] == JVM_SIGNATURE_ARRAY) {
       int length = parse_int("array length");
       oop value = NULL;
 
-      if (field_signature[1] == '[') {
+      if (field_signature[1] == JVM_SIGNATURE_ARRAY) {
         // multi dimensional array
         ArrayKlass* kelem = (ArrayKlass *)parse_klass(CHECK);
         if (kelem == NULL) {
           return;
         }
         int rank = 0;
-        while (field_signature[rank] == '[') {
+        while (field_signature[rank] == JVM_SIGNATURE_ARRAY) {
           rank++;
         }
         jint* dims = NEW_RESOURCE_ARRAY(jint, rank);
@@ -851,7 +851,8 @@
           value = oopFactory::new_intArray(length, CHECK);
         } else if (strcmp(field_signature, "[J") == 0) {
           value = oopFactory::new_longArray(length, CHECK);
-        } else if (field_signature[0] == '[' && field_signature[1] == 'L') {
+        } else if (field_signature[0] == JVM_SIGNATURE_ARRAY &&
+                   field_signature[1] == JVM_SIGNATURE_CLASS) {
           Klass* kelem = resolve_klass(field_signature + 1, CHECK);
           value = oopFactory::new_objArray(kelem, length, CHECK);
         } else {
@@ -892,7 +893,7 @@
       } else if (strcmp(field_signature, "Ljava/lang/String;") == 0) {
         Handle value = java_lang_String::create_from_str(string_value, CHECK);
         java_mirror->obj_field_put(fd.offset(), value());
-      } else if (field_signature[0] == 'L') {
+      } else if (field_signature[0] == JVM_SIGNATURE_CLASS) {
         Klass* k = resolve_klass(string_value, CHECK);
         oop value = InstanceKlass::cast(k)->allocate_instance(CHECK);
         java_mirror->obj_field_put(fd.offset(), value);
--- a/src/hotspot/share/classfile/classFileParser.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/classfile/classFileParser.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -731,7 +731,7 @@
           const unsigned int name_len = name->utf8_length();
           if (tag == JVM_CONSTANT_Methodref &&
               name_len != 0 &&
-              name->char_at(0) == '<' &&
+              name->char_at(0) == JVM_SIGNATURE_SPECIAL &&
               name != vmSymbols::object_initializer_name()) {
             classfile_parse_error(
               "Bad method name at constant pool index %u in class file %s",
@@ -4961,24 +4961,25 @@
   if (length == 0) return false;  // Must have at least one char.
   for (const char* p = name; p != name + length; p++) {
     switch(*p) {
-      case '.':
-      case ';':
-      case '[':
+      case JVM_SIGNATURE_DOT:
+      case JVM_SIGNATURE_ENDCLASS:
+      case JVM_SIGNATURE_ARRAY:
         // do not permit '.', ';', or '['
         return false;
-      case '/':
+      case JVM_SIGNATURE_SLASH:
         // check for '//' or leading or trailing '/' which are not legal
         // unqualified name must not be empty
         if (type == ClassFileParser::LegalClass) {
-          if (p == name || p+1 >= name+length || *(p+1) == '/') {
+          if (p == name || p+1 >= name+length ||
+              *(p+1) == JVM_SIGNATURE_SLASH) {
             return false;
           }
         } else {
           return false;   // do not permit '/' unless it's class name
         }
         break;
-      case '<':
-      case '>':
+      case JVM_SIGNATURE_SPECIAL:
+      case JVM_SIGNATURE_ENDSPECIAL:
         // do not permit '<' or '>' in method names
         if (type == ClassFileParser::LegalMethod) {
           return false;
@@ -5015,7 +5016,7 @@
         last_is_slash = false;
         continue;
       }
-      if (slash_ok && ch == '/') {
+      if (slash_ok && ch == JVM_SIGNATURE_SLASH) {
         if (last_is_slash) {
           return NULL;  // Don't permit consecutive slashes
         }
@@ -5095,14 +5096,14 @@
         const char* const p = skip_over_field_name(signature + 1, true, --length);
 
         // The next character better be a semicolon
-        if (p && (p - signature) > 1 && p[0] == ';') {
+        if (p && (p - signature) > 1 && p[0] == JVM_SIGNATURE_ENDCLASS) {
           return p + 1;
         }
       }
       else {
         // Skip leading 'L' and ignore first appearance of ';'
         signature++;
-        const char* c = (const char*) memchr(signature, ';', length - 1);
+        const char* c = (const char*) memchr(signature, JVM_SIGNATURE_ENDCLASS, length - 1);
         // Format check signature
         if (c != NULL) {
           int newlen = c - (char*) signature;
@@ -5151,7 +5152,7 @@
       p = skip_over_field_signature(bytes, false, length, CHECK);
       legal = (p != NULL) && ((p - bytes) == (int)length);
     } else if (_major_version < JAVA_1_5_VERSION) {
-      if (bytes[0] != '<') {
+      if (bytes[0] != JVM_SIGNATURE_SPECIAL) {
         p = skip_over_field_name(bytes, true, length);
         legal = (p != NULL) && ((p - bytes) == (int)length);
       }
@@ -5186,7 +5187,7 @@
 
   if (length > 0) {
     if (_major_version < JAVA_1_5_VERSION) {
-      if (bytes[0] != '<') {
+      if (bytes[0] != JVM_SIGNATURE_SPECIAL) {
         const char* p = skip_over_field_name(bytes, false, length);
         legal = (p != NULL) && ((p - bytes) == (int)length);
       }
@@ -5219,7 +5220,7 @@
   bool legal = false;
 
   if (length > 0) {
-    if (bytes[0] == '<') {
+    if (bytes[0] == JVM_SIGNATURE_SPECIAL) {
       if (name == vmSymbols::object_initializer_name() || name == vmSymbols::class_initializer_name()) {
         legal = true;
       }
@@ -5303,7 +5304,7 @@
     // The first non-signature thing better be a ')'
     if ((length > 0) && (*p++ == JVM_SIGNATURE_ENDFUNC)) {
       length--;
-      if (name->utf8_length() > 0 && name->char_at(0) == '<') {
+      if (name->utf8_length() > 0 && name->char_at(0) == JVM_SIGNATURE_SPECIAL) {
         // All internal methods must return void
         if ((length == 1) && (p[0] == JVM_SIGNATURE_VOID)) {
           return args_size;
@@ -5705,7 +5706,7 @@
 // its _class_name field.
 void ClassFileParser::prepend_host_package_name(const InstanceKlass* unsafe_anonymous_host, TRAPS) {
   ResourceMark rm(THREAD);
-  assert(strrchr(_class_name->as_C_string(), '/') == NULL,
+  assert(strrchr(_class_name->as_C_string(), JVM_SIGNATURE_SLASH) == NULL,
          "Unsafe anonymous class should not be in a package");
   const char* host_pkg_name =
     ClassLoader::package_from_name(unsafe_anonymous_host->name()->as_C_string(), NULL);
@@ -5738,7 +5739,7 @@
   assert(_unsafe_anonymous_host != NULL, "Expected an unsafe anonymous class");
 
   const jbyte* anon_last_slash = UTF8::strrchr((const jbyte*)_class_name->base(),
-                                               _class_name->utf8_length(), '/');
+                                               _class_name->utf8_length(), JVM_SIGNATURE_SLASH);
   if (anon_last_slash == NULL) {  // Unnamed package
     prepend_host_package_name(_unsafe_anonymous_host, CHECK);
   } else {
@@ -6343,7 +6344,7 @@
   if (class_name != NULL) {
     ResourceMark rm;
     char* name = class_name->as_C_string();
-    return strchr(name, '.') == NULL;
+    return strchr(name, JVM_SIGNATURE_DOT) == NULL;
   } else {
     return true;
   }
--- a/src/hotspot/share/classfile/classListParser.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/classfile/classListParser.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -229,17 +229,17 @@
   jio_fprintf(defaultStream::error_stream(), "}\n");
 }
 
-void ClassListParser::print_actual_interfaces(InstanceKlass *ik) {
+void ClassListParser::print_actual_interfaces(InstanceKlass* ik) {
   int n = ik->local_interfaces()->length();
   jio_fprintf(defaultStream::error_stream(), "Actual interfaces[%d] = {\n", n);
   for (int i = 0; i < n; i++) {
-    InstanceKlass* e = InstanceKlass::cast(ik->local_interfaces()->at(i));
+    InstanceKlass* e = ik->local_interfaces()->at(i);
     jio_fprintf(defaultStream::error_stream(), "  %s\n", e->name()->as_klass_external_name());
   }
   jio_fprintf(defaultStream::error_stream(), "}\n");
 }
 
-void ClassListParser::error(const char *msg, ...) {
+void ClassListParser::error(const char* msg, ...) {
   va_list ap;
   va_start(ap, msg);
   int error_index = _token - _line;
@@ -328,7 +328,7 @@
 Klass* ClassListParser::load_current_class(TRAPS) {
   TempNewSymbol class_name_symbol = SymbolTable::new_symbol(_class_name);
 
-  Klass *klass = NULL;
+  Klass* klass = NULL;
   if (!is_loading_from_source()) {
     // Load classes for the boot/platform/app loaders only.
     if (is_super_specified()) {
--- a/src/hotspot/share/classfile/classLoader.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/classfile/classLoader.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -187,7 +187,7 @@
     *bad_class_name = false;
   }
 
-  const char* const last_slash = strrchr(class_name, '/');
+  const char* const last_slash = strrchr(class_name, JVM_SIGNATURE_SLASH);
   if (last_slash == NULL) {
     // No package name
     return NULL;
@@ -195,16 +195,16 @@
 
   char* class_name_ptr = (char*) class_name;
   // Skip over '['s
-  if (*class_name_ptr == '[') {
+  if (*class_name_ptr == JVM_SIGNATURE_ARRAY) {
     do {
       class_name_ptr++;
-    } while (*class_name_ptr == '[');
+    } while (*class_name_ptr == JVM_SIGNATURE_ARRAY);
 
     // Fully qualified class names should not contain a 'L'.
     // Set bad_class_name to true to indicate that the package name
     // could not be obtained due to an error condition.
     // In this situation, is_same_class_package returns false.
-    if (*class_name_ptr == 'L') {
+    if (*class_name_ptr == JVM_SIGNATURE_CLASS) {
       if (bad_class_name != NULL) {
         *bad_class_name = true;
       }
--- a/src/hotspot/share/classfile/defaultMethods.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/classfile/defaultMethods.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -146,7 +146,7 @@
       return interface_index() >= number_of_interfaces();
     }
     InstanceKlass* interface_at(int index) {
-      return InstanceKlass::cast(_class->local_interfaces()->at(index));
+      return _class->local_interfaces()->at(index);
     }
     InstanceKlass* next_super() { return _class->java_super(); }
     InstanceKlass* next_interface() {
@@ -1012,7 +1012,7 @@
       klass->class_loader_data(), new_size, NULL, CHECK);
 
   // original_ordering might be empty if this class has no methods of its own
-  if (JvmtiExport::can_maintain_original_method_order() || DumpSharedSpaces) {
+  if (JvmtiExport::can_maintain_original_method_order() || Arguments::is_dumping_archive()) {
     merged_ordering = MetadataFactory::new_array<int>(
         klass->class_loader_data(), new_size, CHECK);
   }
--- a/src/hotspot/share/classfile/dictionary.hpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/classfile/dictionary.hpp	Wed Oct 23 14:01:17 2019 -0400
@@ -156,7 +156,6 @@
   // Tells whether the initiating class' protection domain can access the klass in this entry
   bool is_valid_protection_domain(Handle protection_domain) {
     if (!ProtectionDomainVerification) return true;
-    if (!SystemDictionary::has_checkPackageAccess()) return true;
 
     return protection_domain() == NULL
          ? true
--- a/src/hotspot/share/classfile/javaAssertions.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/classfile/javaAssertions.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -79,7 +79,7 @@
   // JVM_DesiredAssertionStatus pass the external_name() to
   // JavaAssertion::enabled(), but that is done once per loaded class.
   for (int i = 0; i < len; ++i) {
-    if (name_copy[i] == '.') name_copy[i] = '/';
+    if (name_copy[i] == JVM_SIGNATURE_DOT) name_copy[i] = JVM_SIGNATURE_SLASH;
   }
 
   if (TraceJavaAssertions) {
@@ -135,7 +135,7 @@
   for (index = len - 1; p != 0; p = p->next(), --index) {
     assert(index >= 0, "length does not match list");
     Handle s = java_lang_String::create_from_str(p->name(), CHECK);
-    s = java_lang_String::char_converter(s, '/', '.', CHECK);
+    s = java_lang_String::char_converter(s, JVM_SIGNATURE_SLASH, JVM_SIGNATURE_DOT, CHECK);
     names->obj_at_put(index, s());
     enabled->bool_at_put(index, p->enabled());
   }
@@ -163,10 +163,10 @@
   // does not include a package, length will be 0 which will match items for the
   // default package (from options "-ea:..."  or "-da:...").
   size_t len = strlen(classname);
-  for (/* empty */; len > 0 && classname[len] != '/'; --len) /* empty */;
+  for (/* empty */; len > 0 && classname[len] != JVM_SIGNATURE_SLASH; --len) /* empty */;
 
   do {
-    assert(len == 0 || classname[len] == '/', "not a package name");
+    assert(len == 0 || classname[len] == JVM_SIGNATURE_SLASH, "not a package name");
     for (OptionList* p = _packages; p != 0; p = p->next()) {
       if (strncmp(p->name(), classname, len) == 0 && p->name()[len] == '\0') {
         return p;
@@ -175,7 +175,7 @@
 
     // Find the length of the next package, taking care to avoid decrementing
     // past 0 (len is unsigned).
-    while (len > 0 && classname[--len] != '/') /* empty */;
+    while (len > 0 && classname[--len] != JVM_SIGNATURE_SLASH) /* empty */;
   } while (len > 0);
 
   return 0;
--- a/src/hotspot/share/classfile/javaClasses.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/classfile/javaClasses.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -377,7 +377,7 @@
 
   if (_to_java_string_fn == NULL) {
     void *lib_handle = os::native_java_library();
-    _to_java_string_fn = CAST_TO_FN_PTR(to_java_string_fn_t, os::dll_lookup(lib_handle, "JNU_NewStringPlatform"));
+    _to_java_string_fn = CAST_TO_FN_PTR(to_java_string_fn_t, os::dll_lookup(lib_handle, "NewStringPlatform"));
     if (_to_java_string_fn == NULL) {
       fatal("NewStringPlatform missing");
     }
@@ -1545,7 +1545,7 @@
 int  java_lang_Class::classRedefinedCount_offset = -1;
 
 #define CLASS_FIELDS_DO(macro) \
-  macro(classRedefinedCount_offset, k, "classRedefinedCount", int_signature,         false) ; \
+  macro(classRedefinedCount_offset, k, "classRedefinedCount", int_signature,         false); \
   macro(_class_loader_offset,       k, "classLoader",         classloader_signature, false); \
   macro(_component_mirror_offset,   k, "componentType",       class_signature,       false); \
   macro(_module_offset,             k, "module",              module_signature,      false); \
@@ -1938,7 +1938,6 @@
   return method != NULL && (method->constants()->version() == version);
 }
 
-
 // This class provides a simple wrapper over the internal structure of
 // exception backtrace to insulate users of the backtrace from needing
 // to know what it looks like.
@@ -1950,7 +1949,11 @@
   typeArrayOop    _methods;
   typeArrayOop    _bcis;
   objArrayOop     _mirrors;
-  typeArrayOop    _names; // needed to insulate method name against redefinition
+  typeArrayOop    _names; // Needed to insulate method name against redefinition.
+  // This is set to a java.lang.Boolean(true) if the top frame
+  // of the backtrace is omitted because it shall be hidden.
+  // Else it is null.
+  oop             _has_hidden_top_frame;
   int             _index;
   NoSafepointVerifier _nsv;
 
@@ -1960,6 +1963,7 @@
     trace_mirrors_offset = java_lang_Throwable::trace_mirrors_offset,
     trace_names_offset   = java_lang_Throwable::trace_names_offset,
     trace_next_offset    = java_lang_Throwable::trace_next_offset,
+    trace_hidden_offset  = java_lang_Throwable::trace_hidden_offset,
     trace_size           = java_lang_Throwable::trace_size,
     trace_chunk_size     = java_lang_Throwable::trace_chunk_size
   };
@@ -1985,11 +1989,15 @@
     assert(names != NULL, "names array should be initialized in backtrace");
     return names;
   }
+  static oop get_has_hidden_top_frame(objArrayHandle chunk) {
+    oop hidden = chunk->obj_at(trace_hidden_offset);
+    return hidden;
+  }
 
  public:
 
   // constructor for new backtrace
-  BacktraceBuilder(TRAPS): _head(NULL), _methods(NULL), _bcis(NULL), _mirrors(NULL), _names(NULL) {
+  BacktraceBuilder(TRAPS): _head(NULL), _methods(NULL), _bcis(NULL), _mirrors(NULL), _names(NULL), _has_hidden_top_frame(NULL) {
     expand(CHECK);
     _backtrace = Handle(THREAD, _head);
     _index = 0;
@@ -2000,6 +2008,7 @@
     _bcis = get_bcis(backtrace);
     _mirrors = get_mirrors(backtrace);
     _names = get_names(backtrace);
+    _has_hidden_top_frame = get_has_hidden_top_frame(backtrace);
     assert(_methods->length() == _bcis->length() &&
            _methods->length() == _mirrors->length() &&
            _mirrors->length() == _names->length(),
@@ -2037,6 +2046,7 @@
     new_head->obj_at_put(trace_bcis_offset, new_bcis());
     new_head->obj_at_put(trace_mirrors_offset, new_mirrors());
     new_head->obj_at_put(trace_names_offset, new_names());
+    new_head->obj_at_put(trace_hidden_offset, NULL);
 
     _head    = new_head();
     _methods = new_methods();
@@ -2077,6 +2087,16 @@
     _index++;
   }
 
+  void set_has_hidden_top_frame(TRAPS) {
+    if (_has_hidden_top_frame == NULL) {
+      jvalue prim;
+      prim.z = 1;
+      PauseNoSafepointVerifier pnsv(&_nsv);
+      _has_hidden_top_frame = java_lang_boxing_object::create(T_BOOLEAN, &prim, CHECK);
+      _head->obj_at_put(trace_hidden_offset, _has_hidden_top_frame);
+    }
+  }
+
 };
 
 struct BacktraceElement : public StackObj {
@@ -2406,7 +2426,13 @@
       }
     }
     if (method->is_hidden()) {
-      if (skip_hidden)  continue;
+      if (skip_hidden) {
+        if (total_count == 0) {
+          // The top frame will be hidden from the stack trace.
+          bt.set_has_hidden_top_frame(CHECK);
+        }
+        continue;
+      }
     }
     bt.push(method, bci, CHECK);
     total_count++;
@@ -2523,6 +2549,37 @@
   }
 }
 
+bool java_lang_Throwable::get_top_method_and_bci(oop throwable, Method** method, int* bci) {
+  Thread* THREAD = Thread::current();
+  objArrayHandle result(THREAD, objArrayOop(backtrace(throwable)));
+  BacktraceIterator iter(result, THREAD);
+  // No backtrace available.
+  if (!iter.repeat()) return false;
+
+  // If the exception happened in a frame that has been hidden, i.e.,
+  // omitted from the back trace, we can not compute the message.
+  oop hidden = ((objArrayOop)backtrace(throwable))->obj_at(trace_hidden_offset);
+  if (hidden != NULL) {
+    return false;
+  }
+
+  // Get first backtrace element.
+  BacktraceElement bte = iter.next(THREAD);
+
+  InstanceKlass* holder = InstanceKlass::cast(java_lang_Class::as_Klass(bte._mirror()));
+  assert(holder != NULL, "first element should be non-null");
+  Method* m = holder->method_with_orig_idnum(bte._method_id, bte._version);
+
+  // Original version is no longer available.
+  if (m == NULL || !version_matches(m, bte._version)) {
+    return false;
+  }
+
+  *method = m;
+  *bci = bte._bci;
+  return true;
+}
+
 oop java_lang_StackTraceElement::create(const methodHandle& method, int bci, TRAPS) {
   // Allocate java.lang.StackTraceElement instance
   InstanceKlass* k = SystemDictionary::StackTraceElement_klass();
--- a/src/hotspot/share/classfile/javaClasses.hpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/classfile/javaClasses.hpp	Wed Oct 23 14:01:17 2019 -0400
@@ -201,7 +201,9 @@
   static inline bool value_equals(typeArrayOop str_value1, typeArrayOop str_value2);
 
   // Conversion between '.' and '/' formats
-  static Handle externalize_classname(Handle java_string, TRAPS) { return char_converter(java_string, '/', '.', THREAD); }
+  static Handle externalize_classname(Handle java_string, TRAPS) {
+    return char_converter(java_string, JVM_SIGNATURE_SLASH, JVM_SIGNATURE_DOT, THREAD);
+  }
 
   // Conversion
   static Symbol* as_symbol(oop java_string);
@@ -518,7 +520,8 @@
     trace_mirrors_offset = 2,
     trace_names_offset   = 3,
     trace_next_offset    = 4,
-    trace_size           = 5,
+    trace_hidden_offset  = 5,
+    trace_size           = 6,
     trace_chunk_size     = 32
   };
 
@@ -568,6 +571,8 @@
   static void java_printStackTrace(Handle throwable, TRAPS);
   // Debugging
   friend class JavaClasses;
+  // Gets the method and bci of the top frame (TOS). Returns false if this failed.
+  static bool get_top_method_and_bci(oop throwable, Method** method, int* bci);
 };
 
 
--- a/src/hotspot/share/classfile/modules.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/classfile/modules.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -331,7 +331,7 @@
     if (!h_loader.is_null() &&
         !SystemDictionary::is_platform_class_loader(h_loader()) &&
         (strncmp(package_name, JAVAPKG, JAVAPKG_LEN) == 0 &&
-          (package_name[JAVAPKG_LEN] == '/' || package_name[JAVAPKG_LEN] == '\0'))) {
+          (package_name[JAVAPKG_LEN] == JVM_SIGNATURE_SLASH || package_name[JAVAPKG_LEN] == '\0'))) {
       const char* class_loader_name = loader_data->loader_name_and_id();
       size_t pkg_len = strlen(package_name);
       char* pkg_name = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, pkg_len + 1);
--- a/src/hotspot/share/classfile/systemDictionary.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/classfile/systemDictionary.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -109,8 +109,6 @@
 oop         SystemDictionary::_java_system_loader         =  NULL;
 oop         SystemDictionary::_java_platform_loader       =  NULL;
 
-bool        SystemDictionary::_has_checkPackageAccess     =  false;
-
 // Default ProtectionDomainCacheSize value
 
 const int defaultProtectionDomainCacheSize = 1009;
@@ -447,8 +445,6 @@
                                                   Handle class_loader,
                                                   Handle protection_domain,
                                                   TRAPS) {
-  if(!has_checkPackageAccess()) return;
-
   // Now we have to call back to java to check if the initating class has access
   JavaValue result(T_VOID);
   LogTarget(Debug, protectiondomain) lt;
@@ -1993,14 +1989,14 @@
   resolve_wk_klasses_through(WK_KLASS_ENUM_NAME(Reference_klass), scan, CHECK);
 
   // Preload ref klasses and set reference types
-  InstanceKlass::cast(WK_KLASS(Reference_klass))->set_reference_type(REF_OTHER);
+  WK_KLASS(Reference_klass)->set_reference_type(REF_OTHER);
   InstanceRefKlass::update_nonstatic_oop_maps(WK_KLASS(Reference_klass));
 
   resolve_wk_klasses_through(WK_KLASS_ENUM_NAME(PhantomReference_klass), scan, CHECK);
-  InstanceKlass::cast(WK_KLASS(SoftReference_klass))->set_reference_type(REF_SOFT);
-  InstanceKlass::cast(WK_KLASS(WeakReference_klass))->set_reference_type(REF_WEAK);
-  InstanceKlass::cast(WK_KLASS(FinalReference_klass))->set_reference_type(REF_FINAL);
-  InstanceKlass::cast(WK_KLASS(PhantomReference_klass))->set_reference_type(REF_PHANTOM);
+  WK_KLASS(SoftReference_klass)->set_reference_type(REF_SOFT);
+  WK_KLASS(WeakReference_klass)->set_reference_type(REF_WEAK);
+  WK_KLASS(FinalReference_klass)->set_reference_type(REF_FINAL);
+  WK_KLASS(PhantomReference_klass)->set_reference_type(REF_PHANTOM);
 
   // JSR 292 classes
   WKID jsr292_group_start = WK_KLASS_ENUM_NAME(MethodHandle_klass);
@@ -2021,11 +2017,6 @@
   //_box_klasses[T_OBJECT]  = WK_KLASS(object_klass);
   //_box_klasses[T_ARRAY]   = WK_KLASS(object_klass);
 
-  { // Compute whether we should use checkPackageAccess or NOT
-    Method* method = InstanceKlass::cast(ClassLoader_klass())->find_method(vmSymbols::checkPackageAccess_name(), vmSymbols::class_protectiondomain_signature());
-    _has_checkPackageAccess = (method != NULL);
-  }
-
 #ifdef ASSERT
   if (UseSharedSpaces) {
     assert(JvmtiExport::is_early_phase(),
@@ -2533,7 +2524,7 @@
 
     // It's a primitive.  (Void has a primitive mirror too.)
     char ch = type->char_at(0);
-    assert(is_java_primitive(char2type(ch)) || ch == 'V', "");
+    assert(is_java_primitive(char2type(ch)) || ch == JVM_SIGNATURE_VOID, "");
     return Handle(THREAD, find_java_mirror_for_type(ch));
 
   } else if (FieldType::is_obj(type) || FieldType::is_array(type)) {
--- a/src/hotspot/share/classfile/systemDictionary.hpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/classfile/systemDictionary.hpp	Wed Oct 23 14:01:17 2019 -0400
@@ -155,6 +155,7 @@
   do_klass(reflect_ConstantPool_klass,                  reflect_ConstantPool                                  ) \
   do_klass(reflect_UnsafeStaticFieldAccessorImpl_klass, reflect_UnsafeStaticFieldAccessorImpl                 ) \
   do_klass(reflect_CallerSensitive_klass,               reflect_CallerSensitive                               ) \
+  do_klass(reflect_NativeConstructorAccessorImpl_klass, reflect_NativeConstructorAccessorImpl                 ) \
                                                                                                                 \
   /* support for dynamic typing; it's OK if these are NULL in earlier JDKs */                                   \
   do_klass(DirectMethodHandle_klass,                    java_lang_invoke_DirectMethodHandle                   ) \
@@ -429,9 +430,6 @@
   }
 
 public:
-  // Tells whether ClassLoader.checkPackageAccess is present
-  static bool has_checkPackageAccess()      { return _has_checkPackageAccess; }
-
   static bool Parameter_klass_loaded()      { return WK_KLASS(reflect_Parameter_klass) != NULL; }
   static bool Class_klass_loaded()          { return WK_KLASS(Class_klass) != NULL; }
   static bool Cloneable_klass_loaded()      { return WK_KLASS(Cloneable_klass) != NULL; }
@@ -666,8 +664,6 @@
   static oop  _java_system_loader;
   static oop  _java_platform_loader;
 
-  static bool _has_checkPackageAccess;
-
 public:
   static TableStatistics placeholders_statistics();
   static TableStatistics loader_constraints_statistics();
--- a/src/hotspot/share/classfile/verificationType.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/classfile/verificationType.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -71,7 +71,7 @@
     if (log_is_enabled(Debug, class, resolve)) {
       Verifier::trace_class_resolution(from_class, klass);
     }
-    return InstanceKlass::cast(from_class)->is_subclass_of(this_class);
+    return from_class->is_subclass_of(this_class);
   }
 
   return false;
@@ -122,19 +122,19 @@
   assert(is_array() && name()->utf8_length() >= 2, "Must be a valid array");
   Symbol* component;
   switch (name()->char_at(1)) {
-    case 'Z': return VerificationType(Boolean);
-    case 'B': return VerificationType(Byte);
-    case 'C': return VerificationType(Char);
-    case 'S': return VerificationType(Short);
-    case 'I': return VerificationType(Integer);
-    case 'J': return VerificationType(Long);
-    case 'F': return VerificationType(Float);
-    case 'D': return VerificationType(Double);
-    case '[':
+    case JVM_SIGNATURE_BOOLEAN: return VerificationType(Boolean);
+    case JVM_SIGNATURE_BYTE:    return VerificationType(Byte);
+    case JVM_SIGNATURE_CHAR:    return VerificationType(Char);
+    case JVM_SIGNATURE_SHORT:   return VerificationType(Short);
+    case JVM_SIGNATURE_INT:     return VerificationType(Integer);
+    case JVM_SIGNATURE_LONG:    return VerificationType(Long);
+    case JVM_SIGNATURE_FLOAT:   return VerificationType(Float);
+    case JVM_SIGNATURE_DOUBLE:  return VerificationType(Double);
+    case JVM_SIGNATURE_ARRAY:
       component = context->create_temporary_symbol(
         name(), 1, name()->utf8_length());
       return VerificationType::reference_type(component);
-    case 'L':
+    case JVM_SIGNATURE_CLASS:
       component = context->create_temporary_symbol(
         name(), 2, name()->utf8_length() - 1);
       return VerificationType::reference_type(component);
--- a/src/hotspot/share/classfile/verificationType.hpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/classfile/verificationType.hpp	Wed Oct 23 14:01:17 2019 -0400
@@ -209,24 +209,24 @@
   bool is_x_array(char sig) const {
     return is_null() || (is_array() && (name()->char_at(1) == sig));
   }
-  bool is_int_array() const { return is_x_array('I'); }
-  bool is_byte_array() const { return is_x_array('B'); }
-  bool is_bool_array() const { return is_x_array('Z'); }
-  bool is_char_array() const { return is_x_array('C'); }
-  bool is_short_array() const { return is_x_array('S'); }
-  bool is_long_array() const { return is_x_array('J'); }
-  bool is_float_array() const { return is_x_array('F'); }
-  bool is_double_array() const { return is_x_array('D'); }
-  bool is_object_array() const { return is_x_array('L'); }
-  bool is_array_array() const { return is_x_array('['); }
+  bool is_int_array() const { return is_x_array(JVM_SIGNATURE_INT); }
+  bool is_byte_array() const { return is_x_array(JVM_SIGNATURE_BYTE); }
+  bool is_bool_array() const { return is_x_array(JVM_SIGNATURE_BOOLEAN); }
+  bool is_char_array() const { return is_x_array(JVM_SIGNATURE_CHAR); }
+  bool is_short_array() const { return is_x_array(JVM_SIGNATURE_SHORT); }
+  bool is_long_array() const { return is_x_array(JVM_SIGNATURE_LONG); }
+  bool is_float_array() const { return is_x_array(JVM_SIGNATURE_FLOAT); }
+  bool is_double_array() const { return is_x_array(JVM_SIGNATURE_DOUBLE); }
+  bool is_object_array() const { return is_x_array(JVM_SIGNATURE_CLASS); }
+  bool is_array_array() const { return is_x_array(JVM_SIGNATURE_ARRAY); }
   bool is_reference_array() const
     { return is_object_array() || is_array_array(); }
   bool is_object() const
     { return (is_reference() && !is_null() && name()->utf8_length() >= 1 &&
-              name()->char_at(0) != '['); }
+              name()->char_at(0) != JVM_SIGNATURE_ARRAY); }
   bool is_array() const
     { return (is_reference() && !is_null() && name()->utf8_length() >= 2 &&
-              name()->char_at(0) == '['); }
+              name()->char_at(0) == JVM_SIGNATURE_ARRAY); }
   bool is_uninitialized() const
     { return ((_u._data & Uninitialized) == Uninitialized); }
   bool is_uninitialized_this() const
@@ -322,7 +322,7 @@
   int dimensions() const {
     assert(is_array(), "Must be an array");
     int index = 0;
-    while (name()->char_at(index) == '[') index++;
+    while (name()->char_at(index) == JVM_SIGNATURE_ARRAY) index++;
     return index;
   }
 
--- a/src/hotspot/share/classfile/verifier.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/classfile/verifier.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -2852,7 +2852,7 @@
     }
   }
 
-  if (method_name->char_at(0) == '<') {
+  if (method_name->char_at(0) == JVM_SIGNATURE_SPECIAL) {
     // Make sure <init> can only be invoked by invokespecial
     if (opcode != Bytecodes::_invokespecial ||
         method_name != vmSymbols::object_initializer_name()) {
@@ -3028,21 +3028,23 @@
     // Check for more than MAX_ARRAY_DIMENSIONS
     length = (int)strlen(component_name);
     if (length > MAX_ARRAY_DIMENSIONS &&
-        component_name[MAX_ARRAY_DIMENSIONS - 1] == '[') {
+        component_name[MAX_ARRAY_DIMENSIONS - 1] == JVM_SIGNATURE_ARRAY) {
       verify_error(ErrorContext::bad_code(bci),
         "Illegal anewarray instruction, array has more than 255 dimensions");
     }
     // add one dimension to component
     length++;
     arr_sig_str = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, length + 1);
-    int n = os::snprintf(arr_sig_str, length + 1, "[%s", component_name);
+    int n = os::snprintf(arr_sig_str, length + 1, "%c%s",
+                         JVM_SIGNATURE_ARRAY, component_name);
     assert(n == length, "Unexpected number of characters in string");
   } else {         // it's an object or interface
     const char* component_name = component_type.name()->as_utf8();
     // add one dimension to component with 'L' prepended and ';' postpended.
     length = (int)strlen(component_name) + 3;
     arr_sig_str = NEW_RESOURCE_ARRAY_IN_THREAD(THREAD, char, length + 1);
-    int n = os::snprintf(arr_sig_str, length + 1, "[L%s;", component_name);
+    int n = os::snprintf(arr_sig_str, length + 1, "%c%c%s;",
+                         JVM_SIGNATURE_ARRAY, JVM_SIGNATURE_CLASS, component_name);
     assert(n == length, "Unexpected number of characters in string");
   }
   Symbol* arr_sig = create_temporary_symbol(arr_sig_str, length);
--- a/src/hotspot/share/classfile/vmSymbols.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/classfile/vmSymbols.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -970,7 +970,7 @@
   case F_RNY:fname = "native synchronized "; break;
   default:   break;
   }
-  const char* kptr = strrchr(kname, '/');
+  const char* kptr = strrchr(kname, JVM_SIGNATURE_SLASH);
   if (kptr != NULL)  kname = kptr + 1;
   int len = jio_snprintf(buf, buflen, "%s: %s%s.%s%s",
                          str, fname, kname, mname, sname);
--- a/src/hotspot/share/classfile/vmSymbols.hpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/classfile/vmSymbols.hpp	Wed Oct 23 14:01:17 2019 -0400
@@ -243,6 +243,7 @@
   template(reflect_Reflection,                        "jdk/internal/reflect/Reflection")              \
   template(reflect_CallerSensitive,                   "jdk/internal/reflect/CallerSensitive")         \
   template(reflect_CallerSensitive_signature,         "Ljdk/internal/reflect/CallerSensitive;")       \
+  template(reflect_NativeConstructorAccessorImpl,     "jdk/internal/reflect/NativeConstructorAccessorImpl")\
   template(checkedExceptions_name,                    "checkedExceptions")                        \
   template(clazz_name,                                "clazz")                                    \
   template(exceptionTypes_name,                       "exceptionTypes")                           \
--- a/src/hotspot/share/compiler/methodMatcher.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/compiler/methodMatcher.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -264,11 +264,13 @@
     c_match = check_mode(class_name, error_msg);
     m_match = check_mode(method_name, error_msg);
 
-    if ((strchr(class_name, '<') != NULL) || (strchr(class_name, '>') != NULL)) {
+    if ((strchr(class_name, JVM_SIGNATURE_SPECIAL) != NULL) ||
+        (strchr(class_name, JVM_SIGNATURE_ENDSPECIAL) != NULL)) {
       error_msg = "Chars '<' and '>' not allowed in class name";
       return;
     }
-    if ((strchr(method_name, '<') != NULL) || (strchr(method_name, '>') != NULL)) {
+    if ((strchr(method_name, JVM_SIGNATURE_SPECIAL) != NULL) ||
+        (strchr(method_name, JVM_SIGNATURE_ENDSPECIAL) != NULL)) {
       if ((strncmp("<init>", method_name, 255) != 0) && (strncmp("<clinit>", method_name, 255) != 0)) {
         error_msg = "Chars '<' and '>' only allowed in <init> and <clinit>";
         return;
--- a/src/hotspot/share/gc/epsilon/epsilonArguments.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/gc/epsilon/epsilonArguments.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -45,13 +45,25 @@
     FLAG_SET_DEFAULT(ExitOnOutOfMemoryError, true);
   }
 
+  // Warn users that non-resizable heap might be better for some configurations.
+  // We are not adjusting the heap size by ourselves, because it affects startup time.
+  if (InitialHeapSize != MaxHeapSize) {
+    log_warning(gc)("Consider setting -Xms equal to -Xmx to avoid resizing hiccups");
+  }
+
+  // Warn users that AlwaysPreTouch might be better for some configurations.
+  // We are not turning this on by ourselves, because it affects startup time.
+  if (FLAG_IS_DEFAULT(AlwaysPreTouch) && !AlwaysPreTouch) {
+    log_warning(gc)("Consider enabling -XX:+AlwaysPreTouch to avoid memory commit hiccups");
+  }
+
   if (EpsilonMaxTLABSize < MinTLABSize) {
-    warning("EpsilonMaxTLABSize < MinTLABSize, adjusting it to " SIZE_FORMAT, MinTLABSize);
+    log_warning(gc)("EpsilonMaxTLABSize < MinTLABSize, adjusting it to " SIZE_FORMAT, MinTLABSize);
     EpsilonMaxTLABSize = MinTLABSize;
   }
 
   if (!EpsilonElasticTLAB && EpsilonElasticTLABDecay) {
-    warning("Disabling EpsilonElasticTLABDecay because EpsilonElasticTLAB is disabled");
+    log_warning(gc)("Disabling EpsilonElasticTLABDecay because EpsilonElasticTLAB is disabled");
     FLAG_SET_DEFAULT(EpsilonElasticTLABDecay, false);
   }
 
--- a/src/hotspot/share/gc/g1/g1CollectedHeap.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/gc/g1/g1CollectedHeap.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -1630,7 +1630,6 @@
 }
 
 jint G1CollectedHeap::initialize() {
-  os::enable_vtime();
 
   // Necessary to satisfy locking discipline assertions.
 
@@ -3614,6 +3613,7 @@
       p->record_or_add_time_secs(termination_phase, worker_id, cl.term_time());
       p->record_or_add_thread_work_item(termination_phase, worker_id, cl.term_attempts());
     }
+    assert(pss->trim_ticks().seconds() == 0.0, "Unexpected partial trimming during evacuation");
   }
 
   virtual void start_work(uint worker_id) { }
@@ -3655,22 +3655,14 @@
 class G1EvacuateRegionsTask : public G1EvacuateRegionsBaseTask {
   G1RootProcessor* _root_processor;
 
-  void verify_trim_ticks(G1ParScanThreadState* pss, const char* location) {
-    assert(pss->trim_ticks().seconds() == 0.0, "Unexpected partial trimming during evacuation at %s %.3lf " JLONG_FORMAT, location, pss->trim_ticks().seconds(), pss->trim_ticks().value());
-  }
-
   void scan_roots(G1ParScanThreadState* pss, uint worker_id) {
     _root_processor->evacuate_roots(pss, worker_id);
-    verify_trim_ticks(pss, "roots");
     _g1h->rem_set()->scan_heap_roots(pss, worker_id, G1GCPhaseTimes::ScanHR, G1GCPhaseTimes::ObjCopy);
-    verify_trim_ticks(pss, "heap roots");
     _g1h->rem_set()->scan_collection_set_regions(pss, worker_id, G1GCPhaseTimes::ScanHR, G1GCPhaseTimes::CodeRoots, G1GCPhaseTimes::ObjCopy);
-    verify_trim_ticks(pss, "scan cset");
   }
 
   void evacuate_live_objects(G1ParScanThreadState* pss, uint worker_id) {
     G1EvacuateRegionsBaseTask::evacuate_live_objects(pss, worker_id, G1GCPhaseTimes::ObjCopy, G1GCPhaseTimes::Termination);
-    verify_trim_ticks(pss, "evac live");
   }
 
   void start_work(uint worker_id) {
@@ -4076,7 +4068,7 @@
     Atomic::add(r->rem_set()->occupied_locked(), &_rs_length);
 
     if (!is_young) {
-      g1h->_hot_card_cache->reset_card_counts(r);
+      g1h->hot_card_cache()->reset_card_counts(r);
     }
 
     if (!evacuation_failed) {
--- a/src/hotspot/share/gc/g1/g1CollectedHeap.hpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/gc/g1/g1CollectedHeap.hpp	Wed Oct 23 14:01:17 2019 -0400
@@ -129,7 +129,6 @@
 };
 
 class G1CollectedHeap : public CollectedHeap {
-  friend class G1FreeCollectionSetTask;
   friend class VM_CollectForMetadataAllocation;
   friend class VM_G1CollectForAllocation;
   friend class VM_G1CollectFull;
@@ -1138,7 +1137,7 @@
     return _reserved.contains(addr);
   }
 
-  G1HotCardCache* g1_hot_card_cache() const { return _hot_card_cache; }
+  G1HotCardCache* hot_card_cache() const { return _hot_card_cache; }
 
   G1CardTable* card_table() const {
     return _card_table;
--- a/src/hotspot/share/gc/g1/g1FullGCPrepareTask.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/gc/g1/g1FullGCPrepareTask.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -114,8 +114,9 @@
   hr->rem_set()->clear();
   hr->clear_cardtable();
 
-  if (_g1h->g1_hot_card_cache()->use_cache()) {
-    _g1h->g1_hot_card_cache()->reset_card_counts(hr);
+  G1HotCardCache* hcc = _g1h->hot_card_cache();
+  if (hcc->use_cache()) {
+    hcc->reset_card_counts(hr);
   }
 }
 
--- a/src/hotspot/share/gc/g1/g1RemSet.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/gc/g1/g1RemSet.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -487,7 +487,7 @@
                    G1CardTable* ct,
                    G1HotCardCache* hot_card_cache) :
   _scan_state(new G1RemSetScanState()),
-  _prev_period_summary(),
+  _prev_period_summary(false),
   _g1h(g1h),
   _ct(ct),
   _g1p(_g1h->policy()),
@@ -1404,7 +1404,7 @@
   if ((G1SummarizeRSetStatsPeriod > 0) && log_is_enabled(Trace, gc, remset) &&
       (period_count % G1SummarizeRSetStatsPeriod == 0)) {
 
-    G1RemSetSummary current(this);
+    G1RemSetSummary current;
     _prev_period_summary.subtract_from(&current);
 
     Log(gc, remset) log;
@@ -1421,7 +1421,7 @@
   Log(gc, remset, exit) log;
   if (log.is_trace()) {
     log.trace(" Cumulative RS summary");
-    G1RemSetSummary current(this);
+    G1RemSetSummary current;
     ResourceMark rm;
     LogStream ls(log.trace());
     current.print_on(&ls);
--- a/src/hotspot/share/gc/g1/g1RemSetSummary.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/gc/g1/g1RemSetSummary.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -81,8 +81,7 @@
   return _rs_threads_vtimes[thread];
 }
 
-G1RemSetSummary::G1RemSetSummary() :
-  _rem_set(NULL),
+G1RemSetSummary::G1RemSetSummary(bool should_update) :
   _total_mutator_refined_cards(0),
   _total_concurrent_refined_cards(0),
   _num_coarsenings(0),
@@ -91,17 +90,10 @@
   _sampling_thread_vtime(0.0f) {
 
   memset(_rs_threads_vtimes, 0, sizeof(double) * _num_vtimes);
-}
 
-G1RemSetSummary::G1RemSetSummary(G1RemSet* rem_set) :
-  _rem_set(rem_set),
-  _total_mutator_refined_cards(0),
-  _total_concurrent_refined_cards(0),
-  _num_coarsenings(0),
-  _num_vtimes(G1ConcurrentRefine::max_num_threads()),
-  _rs_threads_vtimes(NEW_C_HEAP_ARRAY(double, _num_vtimes, mtGC)),
-  _sampling_thread_vtime(0.0f) {
-  update();
+  if (should_update) {
+    update();
+  }
 }
 
 G1RemSetSummary::~G1RemSetSummary() {
--- a/src/hotspot/share/gc/g1/g1RemSetSummary.hpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/gc/g1/g1RemSetSummary.hpp	Wed Oct 23 14:01:17 2019 -0400
@@ -36,8 +36,6 @@
 private:
   friend class GetRSThreadVTimeClosure;
 
-  G1RemSet* _rem_set;
-
   size_t _total_mutator_refined_cards;
   size_t _total_concurrent_refined_cards;
 
@@ -57,8 +55,7 @@
   void update();
 
 public:
-  G1RemSetSummary();
-  G1RemSetSummary(G1RemSet* remset);
+  G1RemSetSummary(bool should_update = true);
 
   ~G1RemSetSummary();
 
--- a/src/hotspot/share/gc/shenandoah/c1/shenandoahBarrierSetC1.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/gc/shenandoah/c1/shenandoahBarrierSetC1.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -211,34 +211,41 @@
   LIRGenerator* gen = access.gen();
 
   DecoratorSet decorators = access.decorators();
-  if ((decorators & IN_NATIVE) != 0) {
+  bool is_traversal_mode = ShenandoahHeap::heap()->is_traversal_mode();
+
+  if ((decorators & IN_NATIVE) != 0 && !is_traversal_mode) {
     assert(access.is_oop(), "IN_NATIVE access only for oop values");
     BarrierSetC1::load_at_resolved(access, result);
     LIR_OprList* args = new LIR_OprList();
+    LIR_Opr addr = access.resolved_addr();
+    addr = ensure_in_register(gen, addr);
     args->append(result);
+    args->append(addr);
     BasicTypeList signature;
     signature.append(T_OBJECT);
+    signature.append(T_ADDRESS);
     LIR_Opr call_result = gen->call_runtime(&signature, args,
                                             CAST_FROM_FN_PTR(address, ShenandoahRuntime::load_reference_barrier_native),
                                             objectType, NULL);
     __ move(call_result, result);
-    return;
-  }
-
-  if (ShenandoahLoadRefBarrier) {
-    LIR_Opr tmp = gen->new_register(T_OBJECT);
-    BarrierSetC1::load_at_resolved(access, tmp);
-    tmp = load_reference_barrier(access.gen(), tmp, access.resolved_addr());
-    __ move(tmp, result);
   } else {
-    BarrierSetC1::load_at_resolved(access, result);
+    if (ShenandoahLoadRefBarrier) {
+      LIR_Opr tmp = gen->new_register(T_OBJECT);
+      BarrierSetC1::load_at_resolved(access, tmp);
+      tmp = load_reference_barrier(access.gen(), tmp, access.resolved_addr());
+      __ move(tmp, result);
+    } else {
+      BarrierSetC1::load_at_resolved(access, result);
+    }
   }
 
   if (ShenandoahKeepAliveBarrier) {
     bool is_weak = (decorators & ON_WEAK_OOP_REF) != 0;
     bool is_phantom = (decorators & ON_PHANTOM_OOP_REF) != 0;
     bool is_anonymous = (decorators & ON_UNKNOWN_OOP_REF) != 0;
-    if (is_weak || is_phantom || is_anonymous) {
+    bool keep_alive = (decorators & AS_NO_KEEPALIVE) == 0 || is_traversal_mode;
+
+    if ((is_weak || is_phantom || is_anonymous) && keep_alive) {
       // Register the value in the referent field with the pre-barrier
       LabelObj *Lcont_anonymous;
       if (is_anonymous) {
--- a/src/hotspot/share/gc/shenandoah/c2/shenandoahBarrierSetC2.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/gc/shenandoah/c2/shenandoahBarrierSetC2.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -536,9 +536,12 @@
   bool mismatched = (decorators & C2_MISMATCHED) != 0;
   bool unknown = (decorators & ON_UNKNOWN_OOP_REF) != 0;
   bool on_heap = (decorators & IN_HEAP) != 0;
-  bool on_weak = (decorators & ON_WEAK_OOP_REF) != 0;
+  bool on_weak_ref = (decorators & (ON_WEAK_OOP_REF | ON_PHANTOM_OOP_REF)) != 0;
   bool is_unordered = (decorators & MO_UNORDERED) != 0;
   bool need_cpu_mem_bar = !is_unordered || mismatched || !on_heap;
+  bool is_traversal_mode = ShenandoahHeap::heap()->is_traversal_mode();
+  bool keep_alive = (decorators & AS_NO_KEEPALIVE) == 0 || is_traversal_mode;
+  bool in_native = (decorators & IN_NATIVE) != 0;
 
   Node* top = Compile::current()->top();
 
@@ -547,7 +550,7 @@
 
   if (access.is_oop()) {
     if (ShenandoahLoadRefBarrier) {
-      load = new ShenandoahLoadReferenceBarrierNode(NULL, load, (decorators & IN_NATIVE) != 0);
+      load = new ShenandoahLoadReferenceBarrierNode(NULL, load, in_native && !is_traversal_mode);
       if (access.is_parse_access()) {
         load = static_cast<C2ParseAccess &>(access).kit()->gvn().transform(load);
       } else {
@@ -563,7 +566,7 @@
   // Also we need to add memory barrier to prevent commoning reads
   // from this field across safepoint since GC can change its value.
   bool need_read_barrier = ShenandoahKeepAliveBarrier &&
-    (on_heap && (on_weak || (unknown && offset != top && obj != top)));
+    (on_weak_ref || (unknown && offset != top && obj != top));
 
   if (!access.is_oop() || !need_read_barrier) {
     return load;
@@ -573,7 +576,7 @@
   C2ParseAccess& parse_access = static_cast<C2ParseAccess&>(access);
   GraphKit* kit = parse_access.kit();
 
-  if (on_weak) {
+  if (on_weak_ref && keep_alive) {
     // Use the pre-barrier to record the value in the referent field
     satb_write_barrier_pre(kit, false /* do_load */,
                            NULL /* obj */, NULL /* adr */, max_juint /* alias_idx */, NULL /* val */, NULL /* val_type */,
--- a/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/gc/shenandoah/c2/shenandoahSupport.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -1033,7 +1033,7 @@
 
   address calladdr = is_native ? CAST_FROM_FN_PTR(address, ShenandoahRuntime::load_reference_barrier_native)
                                : target;
-  const char* name = is_native ? "oop_load_from_native_barrier" : "load_reference_barrier";
+  const char* name = is_native ? "load_reference_barrier_native" : "load_reference_barrier";
   Node* call = new CallLeafNode(ShenandoahBarrierSetC2::shenandoah_load_reference_barrier_Type(), calladdr, name, TypeRawPtr::BOTTOM);
 
   call->init_req(TypeFunc::Control, ctrl);
--- a/src/hotspot/share/gc/shenandoah/heuristics/shenandoahPassiveHeuristics.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/gc/shenandoah/heuristics/shenandoahPassiveHeuristics.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -29,6 +29,11 @@
 #include "logging/log.hpp"
 #include "logging/logTag.hpp"
 
+ShenandoahPassiveHeuristics::ShenandoahPassiveHeuristics() : ShenandoahHeuristics() {
+  // Passive runs with max speed for allocation, because GC is always STW
+  SHENANDOAH_ERGO_DISABLE_FLAG(ShenandoahPacing);
+}
+
 bool ShenandoahPassiveHeuristics::should_start_gc() const {
   // Never do concurrent GCs.
   return false;
--- a/src/hotspot/share/gc/shenandoah/heuristics/shenandoahPassiveHeuristics.hpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/gc/shenandoah/heuristics/shenandoahPassiveHeuristics.hpp	Wed Oct 23 14:01:17 2019 -0400
@@ -28,7 +28,9 @@
 
 class ShenandoahPassiveHeuristics : public ShenandoahHeuristics {
 public:
-   virtual bool should_start_gc() const;
+  ShenandoahPassiveHeuristics();
+
+  virtual bool should_start_gc() const;
 
   virtual bool should_process_references();
 
--- a/src/hotspot/share/gc/shenandoah/heuristics/shenandoahTraversalAggressiveHeuristics.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/gc/shenandoah/heuristics/shenandoahTraversalAggressiveHeuristics.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -75,6 +75,9 @@
   RegionData *data = get_region_data_cache(heap->num_regions());
   size_t cnt = 0;
 
+  // About to choose the collection set, make sure we have pinned regions in correct state
+  heap->assert_pinned_region_status();
+
   // Step 0. Prepare all regions
   for (size_t i = 0; i < heap->num_regions(); i++) {
     ShenandoahHeapRegion* r = heap->get_region(i);
--- a/src/hotspot/share/gc/shenandoah/heuristics/shenandoahTraversalHeuristics.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/gc/shenandoah/heuristics/shenandoahTraversalHeuristics.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -59,6 +59,9 @@
   RegionData *data = get_region_data_cache(heap->num_regions());
   size_t cnt = 0;
 
+  // About to choose the collection set, make sure we have pinned regions in correct state
+  heap->assert_pinned_region_status();
+
   // Step 0. Prepare all regions
 
   for (size_t i = 0; i < heap->num_regions(); i++) {
--- a/src/hotspot/share/gc/shenandoah/shenandoahBarrierSet.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/gc/shenandoah/shenandoahBarrierSet.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -262,27 +262,39 @@
   }
 }
 
-oop ShenandoahBarrierSet::oop_load_from_native_barrier(oop obj) {
+oop ShenandoahBarrierSet::load_reference_barrier_native(oop obj, oop* load_addr) {
+  return load_reference_barrier_native_impl(obj, load_addr);
+}
+
+oop ShenandoahBarrierSet::load_reference_barrier_native(oop obj, narrowOop* load_addr) {
+  // Assumption: narrow oop version should not be used anywhere.
+  ShouldNotReachHere();
+  return NULL;
+}
+
+template <class T>
+oop ShenandoahBarrierSet::load_reference_barrier_native_impl(oop obj, T* load_addr) {
   if (CompressedOops::is_null(obj)) {
     return NULL;
   }
 
   ShenandoahMarkingContext* const marking_context = _heap->marking_context();
-
-  if (_heap->is_evacuation_in_progress()) {
-    // Normal GC
-    if (!marking_context->is_marked(obj)) {
+  if (_heap->is_evacuation_in_progress() && !marking_context->is_marked(obj)) {
+    Thread* thr = Thread::current();
+    if (thr->is_Java_thread()) {
       return NULL;
-    }
-  } else if (_heap->is_concurrent_traversal_in_progress()) {
-    // Traversal GC
-    if (marking_context->is_complete() &&
-        !marking_context->is_marked(resolve_forwarded_not_null(obj))) {
-      return NULL;
+    } else {
+      return obj;
     }
   }
 
-  return load_reference_barrier_not_null(obj);
+  oop fwd = load_reference_barrier_not_null(obj);
+  if (load_addr != NULL && fwd != obj) {
+    // Since we are here and we know the load address, update the reference.
+    ShenandoahHeap::cas_oop(fwd, load_addr, obj);
+  }
+
+  return fwd;
 }
 
 void ShenandoahBarrierSet::clone_barrier_runtime(oop src) {
--- a/src/hotspot/share/gc/shenandoah/shenandoahBarrierSet.hpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/gc/shenandoah/shenandoahBarrierSet.hpp	Wed Oct 23 14:01:17 2019 -0400
@@ -84,8 +84,6 @@
 
   void write_ref_field_work(void* v, oop o, bool release = false);
 
-  oop oop_load_from_native_barrier(oop obj);
-
   virtual void on_thread_create(Thread* thread);
   virtual void on_thread_destroy(Thread* thread);
   virtual void on_thread_attach(Thread* thread);
@@ -106,6 +104,9 @@
   template <class T>
   oop load_reference_barrier_mutator_work(oop obj, T* load_addr);
 
+  oop load_reference_barrier_native(oop obj, oop* load_addr);
+  oop load_reference_barrier_native(oop obj, narrowOop* load_addr);
+
   void enqueue(oop obj);
 
 private:
@@ -118,6 +119,9 @@
 
   oop load_reference_barrier_impl(oop obj);
 
+  template <class T>
+  oop load_reference_barrier_native_impl(oop obj, T* load_addr);
+
   static void keep_alive_if_weak(DecoratorSet decorators, oop value) {
     assert((decorators & ON_UNKNOWN_OOP_REF) == 0, "Reference strength must be known");
     const bool on_strong_oop_ref = (decorators & ON_STRONG_OOP_REF) != 0;
--- a/src/hotspot/share/gc/shenandoah/shenandoahBarrierSet.inline.hpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/gc/shenandoah/shenandoahBarrierSet.inline.hpp	Wed Oct 23 14:01:17 2019 -0400
@@ -69,7 +69,7 @@
 template <typename T>
 inline oop ShenandoahBarrierSet::AccessBarrier<decorators, BarrierSetT>::oop_load_not_in_heap(T* addr) {
   oop value = Raw::oop_load_not_in_heap(addr);
-  value = ShenandoahBarrierSet::barrier_set()->oop_load_from_native_barrier(value);
+  value = ShenandoahBarrierSet::barrier_set()->load_reference_barrier_native(value, addr);
   keep_alive_if_weak(decorators, value);
   return value;
 }
--- a/src/hotspot/share/gc/shenandoah/shenandoahClosures.hpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/gc/shenandoah/shenandoahClosures.hpp	Wed Oct 23 14:01:17 2019 -0400
@@ -27,6 +27,7 @@
 
 class ShenandoahHeap;
 class ShenandoahMarkingContext;
+class ShenandoahHeapRegionSet;
 class Thread;
 
 class ShenandoahForwardedIsAliveClosure: public BoolObjectClosure {
@@ -65,6 +66,20 @@
   inline void do_oop_work(T* p);
 };
 
+class ShenandoahTraversalUpdateRefsClosure: public OopClosure {
+private:
+  ShenandoahHeap* const           _heap;
+  ShenandoahHeapRegionSet* const  _traversal_set;
+
+public:
+  inline ShenandoahTraversalUpdateRefsClosure();
+  inline void do_oop(oop* p);
+  inline void do_oop(narrowOop* p);
+private:
+  template <class T>
+  inline void do_oop_work(T* p);
+};
+
 class ShenandoahEvacuateUpdateRootsClosure: public BasicOopIterateClosure {
 private:
   ShenandoahHeap* _heap;
--- a/src/hotspot/share/gc/shenandoah/shenandoahClosures.inline.hpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/gc/shenandoah/shenandoahClosures.inline.hpp	Wed Oct 23 14:01:17 2019 -0400
@@ -26,6 +26,7 @@
 #include "gc/shenandoah/shenandoahAsserts.hpp"
 #include "gc/shenandoah/shenandoahClosures.hpp"
 #include "gc/shenandoah/shenandoahHeap.inline.hpp"
+#include "gc/shenandoah/shenandoahTraversalGC.hpp"
 #include "oops/compressedOops.inline.hpp"
 #include "runtime/thread.hpp"
 
@@ -78,6 +79,29 @@
 void ShenandoahUpdateRefsClosure::do_oop(oop* p)       { do_oop_work(p); }
 void ShenandoahUpdateRefsClosure::do_oop(narrowOop* p) { do_oop_work(p); }
 
+ShenandoahTraversalUpdateRefsClosure::ShenandoahTraversalUpdateRefsClosure() :
+  _heap(ShenandoahHeap::heap()),
+  _traversal_set(ShenandoahHeap::heap()->traversal_gc()->traversal_set()) {
+  assert(_heap->is_traversal_mode(), "Why we here?");
+}
+
+template <class T>
+void ShenandoahTraversalUpdateRefsClosure::do_oop_work(T* p) {
+  T o = RawAccess<>::oop_load(p);
+  if (!CompressedOops::is_null(o)) {
+    oop obj = CompressedOops::decode_not_null(o);
+    if (_heap->in_collection_set(obj) || _traversal_set->is_in((HeapWord*)obj)) {
+      obj = ShenandoahBarrierSet::resolve_forwarded_not_null(obj);
+      RawAccess<IS_NOT_NULL>::oop_store(p, obj);
+    } else {
+      shenandoah_assert_not_forwarded(p, obj);
+    }
+  }
+}
+
+void ShenandoahTraversalUpdateRefsClosure::do_oop(oop* p)       { do_oop_work(p); }
+void ShenandoahTraversalUpdateRefsClosure::do_oop(narrowOop* p) { do_oop_work(p); }
+
 ShenandoahEvacuateUpdateRootsClosure::ShenandoahEvacuateUpdateRootsClosure() :
   _heap(ShenandoahHeap::heap()), _thread(Thread::current()) {
 }
--- a/src/hotspot/share/gc/shenandoah/shenandoahConcurrentMark.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/gc/shenandoah/shenandoahConcurrentMark.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -319,13 +319,20 @@
 };
 
 void ShenandoahConcurrentMark::update_thread_roots(ShenandoahPhaseTimings::Phase root_phase) {
-  WorkGang* workers = _heap->workers();
-  bool is_par = workers->active_workers() > 1;
+  assert(ShenandoahSafepoint::is_at_shenandoah_safepoint(), "Must be at a safepoint");
+
+  ShenandoahGCPhase phase(root_phase);
+
 #if COMPILER2_OR_JVMCI
   DerivedPointerTable::clear();
 #endif
+
+  WorkGang* workers = _heap->workers();
+  bool is_par = workers->active_workers() > 1;
+
   ShenandoahUpdateThreadRootsTask task(is_par, root_phase);
   workers->run_task(&task);
+
 #if COMPILER2_OR_JVMCI
   DerivedPointerTable::update_pointers();
 #endif
@@ -435,8 +442,6 @@
     weak_refs_work(full_gc);
   }
 
-  _heap->parallel_cleaning(full_gc);
-
   assert(task_queues()->is_empty(), "Should be empty");
   TASKQUEUE_STATS_ONLY(task_queues()->print_taskqueue_stats());
   TASKQUEUE_STATS_ONLY(task_queues()->reset_taskqueue_stats());
--- a/src/hotspot/share/gc/shenandoah/shenandoahHeap.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/gc/shenandoah/shenandoahHeap.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -1478,6 +1478,12 @@
   if (!cancelled_gc()) {
     concurrent_mark()->finish_mark_from_roots(/* full_gc = */ false);
 
+    // Marking is completed, deactivate SATB barrier
+    set_concurrent_mark_in_progress(false);
+    mark_complete_marking_context();
+
+    parallel_cleaning(false /* full gc*/);
+
     if (has_forwarded_objects()) {
       // Degen may be caused by failed evacuation of roots
       if (is_degenerated_gc_in_progress()) {
@@ -1485,39 +1491,50 @@
       } else {
         concurrent_mark()->update_thread_roots(ShenandoahPhaseTimings::update_roots);
       }
+      set_has_forwarded_objects(false);
    }
 
     if (ShenandoahVerify) {
       verifier()->verify_roots_no_forwarded();
     }
-
-    stop_concurrent_marking();
-
+    // All allocations past TAMS are implicitly live, adjust the region data.
+    // Bitmaps/TAMS are swapped at this point, so we need to poll complete bitmap.
     {
       ShenandoahGCPhase phase(ShenandoahPhaseTimings::complete_liveness);
-
-      // All allocations past TAMS are implicitly live, adjust the region data.
-      // Bitmaps/TAMS are swapped at this point, so we need to poll complete bitmap.
       ShenandoahCompleteLivenessClosure cl;
       parallel_heap_region_iterate(&cl);
     }
 
+    // Force the threads to reacquire their TLABs outside the collection set.
+    {
+      ShenandoahGCPhase phase(ShenandoahPhaseTimings::retire_tlabs);
+      make_parsable(true);
+    }
+
+    // We are about to select the collection set, make sure it knows about
+    // current pinning status. Also, this allows trashing more regions that
+    // now have their pinning status dropped.
+    {
+      ShenandoahGCPhase phase(ShenandoahPhaseTimings::sync_pinned);
+      sync_pinned_region_status();
+    }
+
+    // Trash the collection set left over from previous cycle, if any.
+    {
+      ShenandoahGCPhase phase(ShenandoahPhaseTimings::trash_cset);
+      trash_cset_regions();
+    }
+
     {
-      ShenandoahGCPhase prepare_evac(ShenandoahPhaseTimings::prepare_evac);
-
-      make_parsable(true);
-
-      trash_cset_regions();
-
-      {
-        ShenandoahHeapLocker locker(lock());
-        _collection_set->clear();
-        _free_set->clear();
-
-        heuristics()->choose_collection_set(_collection_set);
-
-        _free_set->rebuild();
-      }
+      ShenandoahGCPhase phase(ShenandoahPhaseTimings::prepare_evac);
+
+      ShenandoahHeapLocker locker(lock());
+      _collection_set->clear();
+      _free_set->clear();
+
+      heuristics()->choose_collection_set(_collection_set);
+
+      _free_set->rebuild();
     }
 
     // If collection set has candidates, start evacuation.
@@ -1562,8 +1579,10 @@
     }
 
   } else {
+    // If this cycle was updating references, we need to keep the has_forwarded_objects
+    // flag on, for subsequent phases to deal with it.
     concurrent_mark()->cancel();
-    stop_concurrent_marking();
+    set_concurrent_mark_in_progress(false);
 
     if (process_references()) {
       // Abandon reference processing right away: pre-cleaning must have failed.
@@ -1580,7 +1599,10 @@
 
   set_evacuation_in_progress(false);
 
-  retire_and_reset_gclabs();
+  {
+    ShenandoahGCPhase phase(ShenandoahPhaseTimings::final_evac_retire_gclabs);
+    retire_and_reset_gclabs();
+  }
 
   if (ShenandoahVerify) {
     verifier()->verify_after_evacuation();
@@ -1776,6 +1798,7 @@
         // it, we fail degeneration right away and slide into Full GC to recover.
 
         {
+          sync_pinned_region_status();
           collection_set()->clear_current_index();
 
           ShenandoahHeapRegion* r;
@@ -1855,17 +1878,6 @@
   op_full(GCCause::_shenandoah_upgrade_to_full_gc);
 }
 
-void ShenandoahHeap::stop_concurrent_marking() {
-  assert(is_concurrent_mark_in_progress(), "How else could we get here?");
-  set_concurrent_mark_in_progress(false);
-  if (!cancelled_gc()) {
-    // If we needed to update refs, and concurrent marking has been cancelled,
-    // we need to finish updating references.
-    set_has_forwarded_objects(false);
-    mark_complete_marking_context();
-  }
-}
-
 void ShenandoahHeap::force_satb_flush_all_threads() {
   if (!is_concurrent_mark_in_progress() && !is_concurrent_traversal_in_progress()) {
     // No need to flush SATBs
@@ -1902,7 +1914,7 @@
 }
 
 void ShenandoahHeap::set_concurrent_traversal_in_progress(bool in_progress) {
-   set_gc_state_mask(TRAVERSAL | HAS_FORWARDED | UPDATEREFS, in_progress);
+   set_gc_state_mask(TRAVERSAL, in_progress);
    ShenandoahBarrierSet::satb_mark_queue_set().set_active_all_threads(in_progress, !in_progress);
 }
 
@@ -2034,11 +2046,19 @@
   // Cleanup weak roots
   ShenandoahGCPhase phase(timing_phase);
   if (has_forwarded_objects()) {
-    ShenandoahForwardedIsAliveClosure is_alive;
-    ShenandoahUpdateRefsClosure keep_alive;
-    ShenandoahParallelWeakRootsCleaningTask<ShenandoahForwardedIsAliveClosure, ShenandoahUpdateRefsClosure>
-      cleaning_task(&is_alive, &keep_alive, num_workers);
-    _workers->run_task(&cleaning_task);
+    if (is_traversal_mode()) {
+      ShenandoahForwardedIsAliveClosure is_alive;
+      ShenandoahTraversalUpdateRefsClosure keep_alive;
+      ShenandoahParallelWeakRootsCleaningTask<ShenandoahForwardedIsAliveClosure, ShenandoahTraversalUpdateRefsClosure>
+        cleaning_task(&is_alive, &keep_alive, num_workers);
+      _workers->run_task(&cleaning_task);
+    } else {
+      ShenandoahForwardedIsAliveClosure is_alive;
+      ShenandoahUpdateRefsClosure keep_alive;
+      ShenandoahParallelWeakRootsCleaningTask<ShenandoahForwardedIsAliveClosure, ShenandoahUpdateRefsClosure>
+        cleaning_task(&is_alive, &keep_alive, num_workers);
+      _workers->run_task(&cleaning_task);
+    }
   } else {
     ShenandoahIsAliveClosure is_alive;
 #ifdef ASSERT
@@ -2060,7 +2080,12 @@
 }
 
 void ShenandoahHeap::set_has_forwarded_objects(bool cond) {
-  set_gc_state_mask(HAS_FORWARDED, cond);
+  if (is_traversal_mode()) {
+    set_gc_state_mask(HAS_FORWARDED | UPDATEREFS, cond);
+  } else {
+    set_gc_state_mask(HAS_FORWARDED, cond);
+  }
+
 }
 
 void ShenandoahHeap::set_process_references(bool pr) {
@@ -2127,16 +2152,45 @@
 }
 
 oop ShenandoahHeap::pin_object(JavaThread* thr, oop o) {
-  ShenandoahHeapLocker locker(lock());
-  heap_region_containing(o)->make_pinned();
+  heap_region_containing(o)->record_pin();
   return o;
 }
 
 void ShenandoahHeap::unpin_object(JavaThread* thr, oop o) {
+  heap_region_containing(o)->record_unpin();
+}
+
+void ShenandoahHeap::sync_pinned_region_status() {
   ShenandoahHeapLocker locker(lock());
-  heap_region_containing(o)->make_unpinned();
+
+  for (size_t i = 0; i < num_regions(); i++) {
+    ShenandoahHeapRegion *r = get_region(i);
+    if (r->is_active()) {
+      if (r->is_pinned()) {
+        if (r->pin_count() == 0) {
+          r->make_unpinned();
+        }
+      } else {
+        if (r->pin_count() > 0) {
+          r->make_pinned();
+        }
+      }
+    }
+  }
+
+  assert_pinned_region_status();
 }
 
+#ifdef ASSERT
+void ShenandoahHeap::assert_pinned_region_status() {
+  for (size_t i = 0; i < num_regions(); i++) {
+    ShenandoahHeapRegion* r = get_region(i);
+    assert((r->is_pinned() && r->pin_count() > 0) || (!r->is_pinned() && r->pin_count() == 0),
+           "Region " SIZE_FORMAT " pinning status is inconsistent", i);
+  }
+}
+#endif
+
 GCTimer* ShenandoahHeap::gc_timer() const {
   return _gc_timer;
 }
@@ -2229,7 +2283,10 @@
 
   set_evacuation_in_progress(false);
 
-  retire_and_reset_gclabs();
+  {
+    ShenandoahGCPhase phase(ShenandoahPhaseTimings::init_update_refs_retire_gclabs);
+    retire_and_reset_gclabs();
+  }
 
   if (ShenandoahVerify) {
     if (!is_degenerated_gc_in_progress()) {
@@ -2239,15 +2296,20 @@
   }
 
   set_update_refs_in_progress(true);
-  make_parsable(true);
-  for (uint i = 0; i < num_regions(); i++) {
-    ShenandoahHeapRegion* r = get_region(i);
-    r->set_concurrent_iteration_safe_limit(r->top());
+
+  {
+    ShenandoahGCPhase phase(ShenandoahPhaseTimings::init_update_refs_prepare);
+
+    make_parsable(true);
+    for (uint i = 0; i < num_regions(); i++) {
+      ShenandoahHeapRegion* r = get_region(i);
+      r->set_concurrent_iteration_safe_limit(r->top());
+    }
+
+    // Reset iterator.
+    _update_refs_iterator.reset();
   }
 
-  // Reset iterator.
-  _update_refs_iterator.reset();
-
   if (ShenandoahPacing) {
     pacer()->setup_for_updaterefs();
   }
@@ -2258,7 +2320,7 @@
 
   // Check if there is left-over work, and finish it
   if (_update_refs_iterator.has_next()) {
-    ShenandoahGCPhase final_work(ShenandoahPhaseTimings::final_update_refs_finish_work);
+    ShenandoahGCPhase phase(ShenandoahPhaseTimings::final_update_refs_finish_work);
 
     // Finish updating references where we left off.
     clear_cancelled_gc();
@@ -2287,9 +2349,18 @@
     verifier()->verify_roots_in_to_space();
   }
 
-  ShenandoahGCPhase final_update_refs(ShenandoahPhaseTimings::final_update_refs_recycle);
-
-  trash_cset_regions();
+  // Drop unnecessary "pinned" state from regions that does not have CP marks
+  // anymore, as this would allow trashing them below.
+  {
+    ShenandoahGCPhase phase(ShenandoahPhaseTimings::final_update_refs_sync_pinned);
+    sync_pinned_region_status();
+  }
+
+  {
+    ShenandoahGCPhase phase(ShenandoahPhaseTimings::final_update_refs_trash_cset);
+    trash_cset_regions();
+  }
+
   set_has_forwarded_objects(false);
   set_update_refs_in_progress(false);
 
--- a/src/hotspot/share/gc/shenandoah/shenandoahHeap.hpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/gc/shenandoah/shenandoahHeap.hpp	Wed Oct 23 14:01:17 2019 -0400
@@ -43,6 +43,7 @@
 class ShenandoahGCStateResetter;
 class ShenandoahHeuristics;
 class ShenandoahMarkingContext;
+class ShenandoahMarkCompact;
 class ShenandoahMode;
 class ShenandoahPhaseTimings;
 class ShenandoahHeap;
@@ -574,6 +575,9 @@
   oop pin_object(JavaThread* thread, oop obj);
   void unpin_object(JavaThread* thread, oop obj);
 
+  void sync_pinned_region_status();
+  void assert_pinned_region_status() NOT_DEBUG_RETURN;
+
 // ---------- Allocation support
 //
 private:
@@ -713,8 +717,6 @@
 
   void deduplicate_string(oop str);
 
-  void stop_concurrent_marking();
-
 private:
   void trash_cset_regions();
   void update_heap_references(bool concurrent);
--- a/src/hotspot/share/gc/shenandoah/shenandoahHeap.inline.hpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/gc/shenandoah/shenandoahHeap.inline.hpp	Wed Oct 23 14:01:17 2019 -0400
@@ -130,15 +130,18 @@
 }
 
 inline oop ShenandoahHeap::cas_oop(oop n, oop* addr, oop c) {
+  assert(is_aligned(addr, HeapWordSize), "Address should be aligned: " PTR_FORMAT, p2i(addr));
   return (oop) Atomic::cmpxchg(n, addr, c);
 }
 
 inline oop ShenandoahHeap::cas_oop(oop n, narrowOop* addr, narrowOop c) {
+  assert(is_aligned(addr, sizeof(narrowOop)), "Address should be aligned: " PTR_FORMAT, p2i(addr));
   narrowOop val = CompressedOops::encode(n);
   return CompressedOops::decode((narrowOop) Atomic::cmpxchg(val, addr, c));
 }
 
 inline oop ShenandoahHeap::cas_oop(oop n, narrowOop* addr, oop c) {
+  assert(is_aligned(addr, sizeof(narrowOop)), "Address should be aligned: " PTR_FORMAT, p2i(addr));
   narrowOop cmp = CompressedOops::encode(c);
   narrowOop val = CompressedOops::encode(n);
   return CompressedOops::decode((narrowOop) Atomic::cmpxchg(val, addr, cmp));
--- a/src/hotspot/share/gc/shenandoah/shenandoahHeapRegion.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/gc/shenandoah/shenandoahHeapRegion.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -59,7 +59,6 @@
   _reserved(MemRegion(start, size_words)),
   _region_number(index),
   _new_top(NULL),
-  _critical_pins(0),
   _empty_time(os::elapsedTime()),
   _state(committed ? _empty_committed : _empty_uncommitted),
   _tlab_allocs(0),
@@ -69,7 +68,8 @@
   _seqnum_first_alloc_gc(0),
   _seqnum_last_alloc_mutator(0),
   _seqnum_last_alloc_gc(0),
-  _live_data(0) {
+  _live_data(0),
+  _critical_pins(0) {
 
   ContiguousSpace::initialize(_reserved, true, committed);
 }
@@ -187,25 +187,20 @@
 
 void ShenandoahHeapRegion::make_pinned() {
   _heap->assert_heaplock_owned_by_current_thread();
+  assert(pin_count() > 0, "Should have pins: " SIZE_FORMAT, pin_count());
+
   switch (_state) {
     case _regular:
-      assert (_critical_pins == 0, "sanity");
       set_state(_pinned);
     case _pinned_cset:
     case _pinned:
-      _critical_pins++;
       return;
     case _humongous_start:
-      assert (_critical_pins == 0, "sanity");
       set_state(_pinned_humongous_start);
     case _pinned_humongous_start:
-      _critical_pins++;
       return;
     case _cset:
-      guarantee(_heap->cancelled_gc(), "only valid when evac has been cancelled");
-      assert (_critical_pins == 0, "sanity");
       _state = _pinned_cset;
-      _critical_pins++;
       return;
     default:
       report_illegal_transition("pinning");
@@ -214,32 +209,20 @@
 
 void ShenandoahHeapRegion::make_unpinned() {
   _heap->assert_heaplock_owned_by_current_thread();
+  assert(pin_count() == 0, "Should not have pins: " SIZE_FORMAT, pin_count());
+
   switch (_state) {
     case _pinned:
-      assert (_critical_pins > 0, "sanity");
-      _critical_pins--;
-      if (_critical_pins == 0) {
-        set_state(_regular);
-      }
+      set_state(_regular);
       return;
     case _regular:
     case _humongous_start:
-      assert (_critical_pins == 0, "sanity");
       return;
     case _pinned_cset:
-      guarantee(_heap->cancelled_gc(), "only valid when evac has been cancelled");
-      assert (_critical_pins > 0, "sanity");
-      _critical_pins--;
-      if (_critical_pins == 0) {
-        set_state(_cset);
-      }
+      set_state(_cset);
       return;
     case _pinned_humongous_start:
-      assert (_critical_pins > 0, "sanity");
-      _critical_pins--;
-      if (_critical_pins == 0) {
-        set_state(_humongous_start);
-      }
+      set_state(_humongous_start);
       return;
     default:
       report_illegal_transition("unpinning");
@@ -434,7 +417,7 @@
   st->print("|G " SIZE_FORMAT_W(5) "%1s", byte_size_in_proper_unit(get_gclab_allocs()),    proper_unit_for_byte_size(get_gclab_allocs()));
   st->print("|S " SIZE_FORMAT_W(5) "%1s", byte_size_in_proper_unit(get_shared_allocs()),   proper_unit_for_byte_size(get_shared_allocs()));
   st->print("|L " SIZE_FORMAT_W(5) "%1s", byte_size_in_proper_unit(get_live_data_bytes()), proper_unit_for_byte_size(get_live_data_bytes()));
-  st->print("|CP " SIZE_FORMAT_W(3), _critical_pins);
+  st->print("|CP " SIZE_FORMAT_W(3), pin_count());
   st->print("|SN " UINT64_FORMAT_X_W(12) ", " UINT64_FORMAT_X_W(8) ", " UINT64_FORMAT_X_W(8) ", " UINT64_FORMAT_X_W(8),
             seqnum_first_alloc_mutator(), seqnum_last_alloc_mutator(),
             seqnum_first_alloc_gc(), seqnum_last_alloc_gc());
@@ -702,3 +685,16 @@
   }
   _state = to;
 }
+
+void ShenandoahHeapRegion::record_pin() {
+  Atomic::add((size_t)1, &_critical_pins);
+}
+
+void ShenandoahHeapRegion::record_unpin() {
+  assert(pin_count() > 0, "Region " SIZE_FORMAT " should have non-zero pins", region_number());
+  Atomic::sub((size_t)1, &_critical_pins);
+}
+
+size_t ShenandoahHeapRegion::pin_count() const {
+  return Atomic::load(&_critical_pins);
+}
--- a/src/hotspot/share/gc/shenandoah/shenandoahHeapRegion.hpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/gc/shenandoah/shenandoahHeapRegion.hpp	Wed Oct 23 14:01:17 2019 -0400
@@ -203,6 +203,10 @@
   RegionState state()              const { return _state; }
   int  state_ordinal()             const { return region_state_to_ordinal(_state); }
 
+  void record_pin();
+  void record_unpin();
+  size_t pin_count() const;
+
 private:
   static size_t RegionCount;
   static size_t RegionSizeBytes;
@@ -238,7 +242,6 @@
 
   // Rarely updated fields
   HeapWord* _new_top;
-  size_t _critical_pins;
   double _empty_time;
 
   // Seldom updated fields
@@ -255,6 +258,7 @@
   uint64_t _seqnum_last_alloc_gc;
 
   volatile size_t _live_data;
+  volatile size_t _critical_pins;
 
   // Claim some space at the end to protect next region
   DEFINE_PAD_MINUS_SIZE(0, DEFAULT_CACHE_LINE_SIZE, 0);
--- a/src/hotspot/share/gc/shenandoah/shenandoahHeuristics.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/gc/shenandoah/shenandoahHeuristics.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -120,6 +120,9 @@
 
   ShenandoahHeap* heap = ShenandoahHeap::heap();
 
+  // Check all pinned regions have updated status before choosing the collection set.
+  heap->assert_pinned_region_status();
+
   // Step 1. Build up the region candidates we care about, rejecting losers and accepting winners right away.
 
   size_t num_regions = heap->num_regions();
--- a/src/hotspot/share/gc/shenandoah/shenandoahLock.hpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/gc/shenandoah/shenandoahLock.hpp	Wed Oct 23 14:01:17 2019 -0400
@@ -41,6 +41,9 @@
   ShenandoahLock() : _state(unlocked), _owner(NULL) {};
 
   void lock() {
+#ifdef ASSERT
+    assert(_owner != Thread::current(), "reentrant locking attempt, would deadlock");
+#endif
     Thread::SpinAcquire(&_state, "Shenandoah Heap Lock");
 #ifdef ASSERT
     assert(_state == locked, "must be locked");
--- a/src/hotspot/share/gc/shenandoah/shenandoahMarkCompact.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/gc/shenandoah/shenandoahMarkCompact.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -110,7 +110,7 @@
     // b. Cancel concurrent mark, if in progress
     if (heap->is_concurrent_mark_in_progress()) {
       heap->concurrent_mark()->cancel();
-      heap->stop_concurrent_marking();
+      heap->set_concurrent_mark_in_progress(false);
     }
     assert(!heap->is_concurrent_mark_in_progress(), "sanity");
 
@@ -128,6 +128,9 @@
     // e. Set back forwarded objects bit back, in case some steps above dropped it.
     heap->set_has_forwarded_objects(has_forwarded_objects);
 
+    // f. Sync pinned region status from the CP marks
+    heap->sync_pinned_region_status();
+
     // The rest of prologue:
     BiasedLocking::preserve_marks();
     _preserved_marks->init(heap->workers()->active_workers());
@@ -240,8 +243,8 @@
   cm->update_roots(ShenandoahPhaseTimings::full_gc_roots);
   cm->mark_roots(ShenandoahPhaseTimings::full_gc_roots);
   cm->finish_mark_from_roots(/* full_gc = */ true);
-
   heap->mark_complete_marking_context();
+  heap->parallel_cleaning(true /* full_gc */);
 }
 
 class ShenandoahPrepareForCompactionObjectClosure : public ObjectClosure {
@@ -505,6 +508,10 @@
 
   ShenandoahHeap* heap = ShenandoahHeap::heap();
 
+  // About to figure out which regions can be compacted, make sure pinning status
+  // had been updated in GC prologue.
+  heap->assert_pinned_region_status();
+
   {
     // Trash the immediately collectible regions before computing addresses
     ShenandoahTrashImmediateGarbageClosure tigcl;
--- a/src/hotspot/share/gc/shenandoah/shenandoahOopClosures.hpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/gc/shenandoah/shenandoahOopClosures.hpp	Wed Oct 23 14:01:17 2019 -0400
@@ -214,15 +214,30 @@
     _mark_context(ShenandoahHeap::heap()->marking_context()) {
   }
 
-  template <class T, bool STRING_DEDUP, bool DEGEN>
+  template <class T, bool STRING_DEDUP, bool DEGEN, bool ATOMIC_UPDATE>
   void work(T* p);
 
 };
 
+class ShenandoahTraversalRootsClosure : public ShenandoahTraversalSuperClosure {
+private:
+  template <class T>
+  inline void do_oop_work(T* p)     { work<T, false, false, false>(p); }
+
+public:
+  ShenandoahTraversalRootsClosure(ShenandoahObjToScanQueue* q, ReferenceProcessor* rp) :
+    ShenandoahTraversalSuperClosure(q, rp) {}
+
+  virtual void do_oop(narrowOop* p) { do_oop_work(p); }
+  virtual void do_oop(oop* p)       { do_oop_work(p); }
+
+  virtual bool do_metadata()        { return false; }
+};
+
 class ShenandoahTraversalClosure : public ShenandoahTraversalSuperClosure {
 private:
   template <class T>
-  inline void do_oop_work(T* p)     { work<T, false, false>(p); }
+  inline void do_oop_work(T* p)     { work<T, false, false, true>(p); }
 
 public:
   ShenandoahTraversalClosure(ShenandoahObjToScanQueue* q, ReferenceProcessor* rp) :
@@ -237,7 +252,7 @@
 class ShenandoahTraversalMetadataClosure : public ShenandoahTraversalSuperClosure {
 private:
   template <class T>
-  inline void do_oop_work(T* p)     { work<T, false, false>(p); }
+  inline void do_oop_work(T* p)     { work<T, false, false, true>(p); }
 
 public:
   ShenandoahTraversalMetadataClosure(ShenandoahObjToScanQueue* q, ReferenceProcessor* rp) :
@@ -252,7 +267,7 @@
 class ShenandoahTraversalDedupClosure : public ShenandoahTraversalSuperClosure {
 private:
   template <class T>
-  inline void do_oop_work(T* p)     { work<T, true, false>(p); }
+  inline void do_oop_work(T* p)     { work<T, true, false, true>(p); }
 
 public:
   ShenandoahTraversalDedupClosure(ShenandoahObjToScanQueue* q, ReferenceProcessor* rp) :
@@ -267,7 +282,7 @@
 class ShenandoahTraversalMetadataDedupClosure : public ShenandoahTraversalSuperClosure {
 private:
   template <class T>
-  inline void do_oop_work(T* p)     { work<T, true, false>(p); }
+  inline void do_oop_work(T* p)     { work<T, true, false, true>(p); }
 
 public:
   ShenandoahTraversalMetadataDedupClosure(ShenandoahObjToScanQueue* q, ReferenceProcessor* rp) :
@@ -282,7 +297,7 @@
 class ShenandoahTraversalDegenClosure : public ShenandoahTraversalSuperClosure {
 private:
   template <class T>
-  inline void do_oop_work(T* p)     { work<T, false, true>(p); }
+  inline void do_oop_work(T* p)     { work<T, false, true, false>(p); }
 
 public:
   ShenandoahTraversalDegenClosure(ShenandoahObjToScanQueue* q, ReferenceProcessor* rp) :
@@ -297,7 +312,7 @@
 class ShenandoahTraversalMetadataDegenClosure : public ShenandoahTraversalSuperClosure {
 private:
   template <class T>
-  inline void do_oop_work(T* p)     { work<T, false, true>(p); }
+  inline void do_oop_work(T* p)     { work<T, false, true, false>(p); }
 
 public:
   ShenandoahTraversalMetadataDegenClosure(ShenandoahObjToScanQueue* q, ReferenceProcessor* rp) :
@@ -312,7 +327,7 @@
 class ShenandoahTraversalDedupDegenClosure : public ShenandoahTraversalSuperClosure {
 private:
   template <class T>
-  inline void do_oop_work(T* p)     { work<T, true, true>(p); }
+  inline void do_oop_work(T* p)     { work<T, true, true, false>(p); }
 
 public:
   ShenandoahTraversalDedupDegenClosure(ShenandoahObjToScanQueue* q, ReferenceProcessor* rp) :
@@ -327,7 +342,7 @@
 class ShenandoahTraversalMetadataDedupDegenClosure : public ShenandoahTraversalSuperClosure {
 private:
   template <class T>
-  inline void do_oop_work(T* p)     { work<T, true, true>(p); }
+  inline void do_oop_work(T* p)     { work<T, true, true, false>(p); }
 
 public:
   ShenandoahTraversalMetadataDedupDegenClosure(ShenandoahObjToScanQueue* q, ReferenceProcessor* rp) :
--- a/src/hotspot/share/gc/shenandoah/shenandoahOopClosures.inline.hpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/gc/shenandoah/shenandoahOopClosures.inline.hpp	Wed Oct 23 14:01:17 2019 -0400
@@ -38,9 +38,9 @@
   _heap->maybe_update_with_forwarded(p);
 }
 
-template <class T, bool STRING_DEDUP, bool DEGEN>
+template <class T, bool STRING_DEDUP, bool DEGEN, bool ATOMIC_UPDATE>
 inline void ShenandoahTraversalSuperClosure::work(T* p) {
-  _traversal_gc->process_oop<T, STRING_DEDUP, DEGEN>(p, _thread, _queue, _mark_context);
+  _traversal_gc->process_oop<T, STRING_DEDUP, DEGEN, ATOMIC_UPDATE>(p, _thread, _queue, _mark_context);
 }
 
 #endif // SHARE_GC_SHENANDOAH_SHENANDOAHOOPCLOSURES_INLINE_HPP
--- a/src/hotspot/share/gc/shenandoah/shenandoahPhaseTimings.hpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/gc/shenandoah/shenandoahPhaseTimings.hpp	Wed Oct 23 14:01:17 2019 -0400
@@ -100,8 +100,10 @@
   f(purge_par,                                      "    Parallel Cleanup")             \
   f(purge_cldg,                                     "    CLDG")                         \
   f(complete_liveness,                              "  Complete Liveness")              \
+  f(retire_tlabs,                                   "  Retire TLABs")                   \
+  f(sync_pinned,                                    "  Sync Pinned")                    \
+  f(trash_cset,                                     "  Trash CSet")                     \
   f(prepare_evac,                                   "  Prepare Evacuation")             \
-  f(recycle_regions,                                "  Recycle regions")                \
                                                                                         \
   /* Per-thread timer block, should have "roots" counters in consistent order */        \
   f(init_evac,                                      "  Initial Evacuation")             \
@@ -127,9 +129,12 @@
                                                                                         \
   f(final_evac_gross,                               "Pause Final Evac (G)")             \
   f(final_evac,                                     "Pause Final Evac (N)")             \
+  f(final_evac_retire_gclabs,                       "  Retire GCLABs")                  \
                                                                                         \
   f(init_update_refs_gross,                         "Pause Init  Update Refs (G)")      \
   f(init_update_refs,                               "Pause Init  Update Refs (N)")      \
+  f(init_update_refs_retire_gclabs,                 "  Retire GCLABs")                  \
+  f(init_update_refs_prepare,                       "  Prepare")                        \
                                                                                         \
   f(final_update_refs_gross,                         "Pause Final Update Refs (G)")     \
   f(final_update_refs,                               "Pause Final Update Refs (N)")     \
@@ -157,7 +162,8 @@
   f(final_update_refs_string_dedup_queue_roots,      "    UR: Dedup Queue Roots")       \
   f(final_update_refs_finish_queues,                 "    UR: Finish Queues")           \
                                                                                         \
-  f(final_update_refs_recycle,                       "  Recycle")                       \
+  f(final_update_refs_sync_pinned,                   "  Sync Pinned")                   \
+  f(final_update_refs_trash_cset,                    "  Trash CSet")                    \
                                                                                         \
   f(degen_gc_gross,                                  "Pause Degenerated GC (G)")        \
   f(degen_gc,                                        "Pause Degenerated GC (N)")        \
@@ -189,6 +195,7 @@
   f(traversal_gc_prepare,                            "  Prepare")                       \
   f(traversal_gc_make_parsable,                      "    Make Parsable")               \
   f(traversal_gc_resize_tlabs,                       "    Resize TLABs")                \
+  f(traversal_gc_prepare_sync_pinned,                "    Sync Pinned")                 \
                                                                                         \
   /* Per-thread timer block, should have "roots" counters in consistent order */        \
   f(init_traversal_gc_work,                          "  Work")                          \
@@ -260,6 +267,7 @@
   f(final_traversal_update_string_dedup_queue_roots,    "    TU: Dedup Queue Roots")    \
   f(final_traversal_update_finish_queues,               "    TU: Finish Queues")        \
                                                                                         \
+  f(traversal_gc_sync_pinned,                        "  Sync Pinned")                   \
   f(traversal_gc_cleanup,                            "  Cleanup")                       \
                                                                                         \
   f(full_gc_gross,                                   "Pause Full GC (G)")               \
--- a/src/hotspot/share/gc/shenandoah/shenandoahRootProcessor.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/gc/shenandoah/shenandoahRootProcessor.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -189,6 +189,18 @@
   _thread_roots(n_workers > 1) {
 }
 
+void ShenandoahRootUpdater::strong_roots_do(uint worker_id, OopClosure* oops_cl) {
+  CodeBlobToOopClosure update_blobs(oops_cl, CodeBlobToOopClosure::FixRelocations);
+  CLDToOopClosure clds(oops_cl, ClassLoaderData::_claim_strong);
+
+  _serial_roots.oops_do(oops_cl, worker_id);
+  _vm_roots.oops_do(oops_cl, worker_id);
+
+  _thread_roots.oops_do(oops_cl, NULL, worker_id);
+  _cld_roots.cld_do(&clds, worker_id);
+  _code_roots.code_blobs_do(&update_blobs, worker_id);
+}
+
 ShenandoahRootAdjuster::ShenandoahRootAdjuster(uint n_workers, ShenandoahPhaseTimings::Phase phase) :
   ShenandoahRootProcessor(phase),
   _thread_roots(n_workers > 1) {
--- a/src/hotspot/share/gc/shenandoah/shenandoahRootProcessor.hpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/gc/shenandoah/shenandoahRootProcessor.hpp	Wed Oct 23 14:01:17 2019 -0400
@@ -304,6 +304,8 @@
 
   template<typename IsAlive, typename KeepAlive>
   void roots_do(uint worker_id, IsAlive* is_alive, KeepAlive* keep_alive);
+
+  void strong_roots_do(uint worker_id, OopClosure* oops_cl);
 };
 
 // Adjuster all roots at a safepoint during full gc
--- a/src/hotspot/share/gc/shenandoah/shenandoahRuntime.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/gc/shenandoah/shenandoahRuntime.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -82,6 +82,6 @@
   ShenandoahBarrierSet::barrier_set()->clone_barrier(s);
 JRT_END
 
-JRT_LEAF(oopDesc*, ShenandoahRuntime::load_reference_barrier_native(oopDesc * src))
-  return (oopDesc*) ShenandoahBarrierSet::barrier_set()->oop_load_from_native_barrier(oop(src));
+JRT_LEAF(oopDesc*, ShenandoahRuntime::load_reference_barrier_native(oopDesc * src, oop* load_addr))
+  return (oopDesc*) ShenandoahBarrierSet::barrier_set()->load_reference_barrier_native(oop(src), load_addr);
 JRT_END
--- a/src/hotspot/share/gc/shenandoah/shenandoahRuntime.hpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/gc/shenandoah/shenandoahRuntime.hpp	Wed Oct 23 14:01:17 2019 -0400
@@ -42,7 +42,7 @@
   static oopDesc* load_reference_barrier_fixup(oopDesc* src, oop* load_addr);
   static oopDesc* load_reference_barrier_fixup_narrow(oopDesc* src, narrowOop* load_addr);
 
-  static oopDesc* load_reference_barrier_native(oopDesc* src);
+  static oopDesc* load_reference_barrier_native(oopDesc* src, oop* load_addr);
 
   static void shenandoah_clone_barrier(oopDesc* src);
 };
--- a/src/hotspot/share/gc/shenandoah/shenandoahTraversalGC.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/gc/shenandoah/shenandoahTraversalGC.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -186,7 +186,7 @@
 
     // Step 1: Process ordinary GC roots.
     {
-      ShenandoahTraversalClosure roots_cl(q, rp);
+      ShenandoahTraversalRootsClosure roots_cl(q, rp);
       ShenandoahMarkCLDClosure cld_cl(&roots_cl);
       MarkingCodeBlobClosure code_cl(&roots_cl, CodeBlobToOopClosure::FixRelocations);
       if (unload_classes) {
@@ -266,7 +266,7 @@
     // in similar way during nmethod-register process. Therefore, we don't need to rescan code
     // roots here.
     if (!_heap->is_degenerated_gc_in_progress()) {
-      ShenandoahTraversalClosure roots_cl(q, rp);
+      ShenandoahTraversalRootsClosure roots_cl(q, rp);
       ShenandoahTraversalSATBThreadsClosure tc(&satb_cl);
       if (unload_classes) {
         ShenandoahRemarkCLDClosure remark_cld_cl(&roots_cl);
@@ -340,9 +340,6 @@
 }
 
 void ShenandoahTraversalGC::prepare() {
-  _heap->collection_set()->clear();
-  assert(_heap->collection_set()->count() == 0, "collection set not clear");
-
   {
     ShenandoahGCPhase phase(ShenandoahPhaseTimings::traversal_gc_make_parsable);
     _heap->make_parsable(true);
@@ -356,15 +353,26 @@
   assert(_heap->marking_context()->is_bitmap_clear(), "need clean mark bitmap");
   assert(!_heap->marking_context()->is_complete(), "should not be complete");
 
-  ShenandoahFreeSet* free_set = _heap->free_set();
+  // About to choose the collection set, make sure we know which regions are pinned.
+  {
+    ShenandoahGCPhase phase_cleanup(ShenandoahPhaseTimings::traversal_gc_prepare_sync_pinned);
+    _heap->sync_pinned_region_status();
+  }
+
   ShenandoahCollectionSet* collection_set = _heap->collection_set();
+  {
+    ShenandoahHeapLocker lock(_heap->lock());
 
-  // Find collection set
-  _heap->heuristics()->choose_collection_set(collection_set);
-  prepare_regions();
+    collection_set->clear();
+    assert(collection_set->count() == 0, "collection set not clear");
 
-  // Rebuild free set
-  free_set->rebuild();
+    // Find collection set
+    _heap->heuristics()->choose_collection_set(collection_set);
+    prepare_regions();
+
+    // Rebuild free set
+    _heap->free_set()->rebuild();
+  }
 
   log_info(gc, ergo)("Collectable Garbage: " SIZE_FORMAT "%s, " SIZE_FORMAT "%s CSet, " SIZE_FORMAT " CSet regions",
                      byte_size_in_proper_unit(collection_set->garbage()),   proper_unit_for_byte_size(collection_set->garbage()),
@@ -385,11 +393,11 @@
 
   {
     ShenandoahGCPhase phase_prepare(ShenandoahPhaseTimings::traversal_gc_prepare);
-    ShenandoahHeapLocker lock(_heap->lock());
     prepare();
   }
 
   _heap->set_concurrent_traversal_in_progress(true);
+  _heap->set_has_forwarded_objects(true);
 
   bool process_refs = _heap->process_references();
   if (process_refs) {
@@ -601,14 +609,24 @@
     TASKQUEUE_STATS_ONLY(_task_queues->reset_taskqueue_stats());
 
     // No more marking expected
+    _heap->set_concurrent_traversal_in_progress(false);
     _heap->mark_complete_marking_context();
 
     fixup_roots();
     _heap->parallel_cleaning(false);
 
+    _heap->set_has_forwarded_objects(false);
+
     // Resize metaspace
     MetaspaceGC::compute_new_size();
 
+    // Need to see that pinned region status is updated: newly pinned regions must not
+    // be trashed. New unpinned regions should be trashed.
+    {
+      ShenandoahGCPhase phase_cleanup(ShenandoahPhaseTimings::traversal_gc_sync_pinned);
+      _heap->sync_pinned_region_status();
+    }
+
     // Still good? We can now trash the cset, and make final verification
     {
       ShenandoahGCPhase phase_cleanup(ShenandoahPhaseTimings::traversal_gc_cleanup);
@@ -651,7 +669,6 @@
     }
 
     assert(_task_queues->is_empty(), "queues must be empty after traversal GC");
-    _heap->set_concurrent_traversal_in_progress(false);
     assert(!_heap->cancelled_gc(), "must not be cancelled when getting out here");
 
     if (ShenandoahVerify) {
@@ -697,8 +714,7 @@
   void work(uint worker_id) {
     ShenandoahParallelWorkerSession worker_session(worker_id);
     ShenandoahTraversalFixRootsClosure cl;
-    ShenandoahForwardedIsAliveClosure is_alive;
-    _rp->roots_do<ShenandoahForwardedIsAliveClosure, ShenandoahTraversalFixRootsClosure>(worker_id, &is_alive, &cl);
+    _rp->strong_roots_do(worker_id, &cl);
   }
 };
 
@@ -751,7 +767,7 @@
 
   template <class T>
   inline void do_oop_work(T* p) {
-    _traversal_gc->process_oop<T, false /* string dedup */, false /* degen */>(p, _thread, _queue, _mark_context);
+    _traversal_gc->process_oop<T, false /* string dedup */, false /* degen */, true /* atomic update */>(p, _thread, _queue, _mark_context);
   }
 
 public:
@@ -773,7 +789,7 @@
 
   template <class T>
   inline void do_oop_work(T* p) {
-    _traversal_gc->process_oop<T, false /* string dedup */, true /* degen */>(p, _thread, _queue, _mark_context);
+    _traversal_gc->process_oop<T, false /* string dedup */, true /* degen */, false /* atomic update */>(p, _thread, _queue, _mark_context);
   }
 
 public:
@@ -796,7 +812,7 @@
   template <class T>
   inline void do_oop_work(T* p) {
     ShenandoahEvacOOMScope evac_scope;
-    _traversal_gc->process_oop<T, false /* string dedup */, false /* degen */>(p, _thread, _queue, _mark_context);
+    _traversal_gc->process_oop<T, false /* string dedup */, false /* degen */, true /* atomic update */>(p, _thread, _queue, _mark_context);
   }
 
 public:
@@ -819,7 +835,7 @@
   template <class T>
   inline void do_oop_work(T* p) {
     ShenandoahEvacOOMScope evac_scope;
-    _traversal_gc->process_oop<T, false /* string dedup */, true /* degen */>(p, _thread, _queue, _mark_context);
+    _traversal_gc->process_oop<T, false /* string dedup */, true /* degen */, false /* atomic update */>(p, _thread, _queue, _mark_context);
   }
 
 public:
--- a/src/hotspot/share/gc/shenandoah/shenandoahTraversalGC.hpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/gc/shenandoah/shenandoahTraversalGC.hpp	Wed Oct 23 14:01:17 2019 -0400
@@ -48,7 +48,7 @@
   void concurrent_traversal_collection();
   void final_traversal_collection();
 
-  template <class T, bool STRING_DEDUP, bool DEGEN>
+  template <class T, bool STRING_DEDUP, bool DEGEN, bool ATOMIC_UPDATE>
   inline void process_oop(T* p, Thread* thread, ShenandoahObjToScanQueue* queue, ShenandoahMarkingContext* const mark_context);
 
   bool check_and_handle_cancelled_gc(ShenandoahTaskTerminator* terminator, bool sts_yield);
--- a/src/hotspot/share/gc/shenandoah/shenandoahTraversalGC.inline.hpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/gc/shenandoah/shenandoahTraversalGC.inline.hpp	Wed Oct 23 14:01:17 2019 -0400
@@ -35,12 +35,13 @@
 #include "oops/compressedOops.inline.hpp"
 #include "oops/oop.inline.hpp"
 
-template <class T, bool STRING_DEDUP, bool DEGEN>
+template <class T, bool STRING_DEDUP, bool DEGEN, bool ATOMIC_UPDATE>
 void ShenandoahTraversalGC::process_oop(T* p, Thread* thread, ShenandoahObjToScanQueue* queue, ShenandoahMarkingContext* const mark_context) {
   T o = RawAccess<>::oop_load(p);
   if (!CompressedOops::is_null(o)) {
     oop obj = CompressedOops::decode_not_null(o);
     if (DEGEN) {
+      assert(!ATOMIC_UPDATE, "Degen path assumes non-atomic updates");
       oop forw = ShenandoahBarrierSet::resolve_forwarded_not_null(obj);
       if (obj != forw) {
         // Update reference.
@@ -54,7 +55,11 @@
       }
       shenandoah_assert_forwarded_except(p, obj, _heap->cancelled_gc());
       // Update reference.
-      ShenandoahHeap::cas_oop(forw, p, obj);
+      if (ATOMIC_UPDATE) {
+        ShenandoahHeap::cas_oop(forw, p, obj);
+      } else {
+        RawAccess<IS_NOT_NULL>::oop_store(p, forw);
+      }
       obj = forw;
     }
 
--- a/src/hotspot/share/gc/z/zArray.hpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/gc/z/zArray.hpp	Wed Oct 23 14:01:17 2019 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2015, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -74,15 +74,13 @@
 template <typename T>
 class ZArrayIterator : public ZArrayIteratorImpl<T, ZARRAY_SERIAL> {
 public:
-  ZArrayIterator(ZArray<T>* array) :
-      ZArrayIteratorImpl<T, ZARRAY_SERIAL>(array) {}
+  ZArrayIterator(ZArray<T>* array);
 };
 
 template <typename T>
 class ZArrayParallelIterator : public ZArrayIteratorImpl<T, ZARRAY_PARALLEL> {
 public:
-  ZArrayParallelIterator(ZArray<T>* array) :
-      ZArrayIteratorImpl<T, ZARRAY_PARALLEL>(array) {}
+  ZArrayParallelIterator(ZArray<T>* array);
 };
 
 #endif // SHARE_GC_Z_ZARRAY_HPP
--- a/src/hotspot/share/gc/z/zArray.inline.hpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/gc/z/zArray.inline.hpp	Wed Oct 23 14:01:17 2019 -0400
@@ -117,4 +117,12 @@
   return false;
 }
 
+template <typename T>
+inline ZArrayIterator<T>::ZArrayIterator(ZArray<T>* array) :
+    ZArrayIteratorImpl<T, ZARRAY_SERIAL>(array) {}
+
+template <typename T>
+inline ZArrayParallelIterator<T>::ZArrayParallelIterator(ZArray<T>* array) :
+    ZArrayIteratorImpl<T, ZARRAY_PARALLEL>(array) {}
+
 #endif // SHARE_GC_Z_ZARRAY_INLINE_HPP
--- a/src/hotspot/share/gc/z/zCPU.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/gc/z/zCPU.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2015, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -22,15 +22,15 @@
  */
 
 #include "precompiled.hpp"
-#include "gc/z/zCPU.hpp"
+#include "gc/z/zCPU.inline.hpp"
 #include "logging/log.hpp"
 #include "memory/padded.inline.hpp"
 #include "runtime/os.hpp"
 #include "runtime/thread.inline.hpp"
 #include "utilities/debug.hpp"
 
-#define ZCPU_UNKNOWN_AFFINITY (Thread*)-1;
-#define ZCPU_UNKNOWN_SELF     (Thread*)-2;
+#define ZCPU_UNKNOWN_AFFINITY ((Thread*)-1)
+#define ZCPU_UNKNOWN_SELF     ((Thread*)-2)
 
 PaddedEnd<ZCPU::ZCPUAffinity>* ZCPU::_affinity = NULL;
 THREAD_LOCAL Thread*           ZCPU::_self     = ZCPU_UNKNOWN_SELF;
@@ -51,20 +51,13 @@
                      os::initial_active_processor_count());
 }
 
-uint32_t ZCPU::count() {
-  return os::processor_count();
-}
-
-uint32_t ZCPU::id() {
-  assert(_affinity != NULL, "Not initialized");
-
-  // Fast path
-  if (_affinity[_cpu]._thread == _self) {
-    return _cpu;
+uint32_t ZCPU::id_slow() {
+  // Set current thread
+  if (_self == ZCPU_UNKNOWN_SELF) {
+    _self = Thread::current();
   }
 
-  // Slow path
-  _self = Thread::current();
+  // Set current CPU
   _cpu = os::processor_id();
 
   // Update affinity table
--- a/src/hotspot/share/gc/z/zCPU.hpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/gc/z/zCPU.hpp	Wed Oct 23 14:01:17 2019 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2015, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -40,6 +40,8 @@
   static THREAD_LOCAL Thread*     _self;
   static THREAD_LOCAL uint32_t    _cpu;
 
+  static uint32_t id_slow();
+
 public:
   static void initialize();
 
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hotspot/share/gc/z/zCPU.inline.hpp	Wed Oct 23 14:01:17 2019 -0400
@@ -0,0 +1,47 @@
+/*
+ * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+#ifndef SHARE_GC_Z_ZCPU_INLINE_HPP
+#define SHARE_GC_Z_ZCPU_INLINE_HPP
+
+#include "gc/z/zCPU.hpp"
+#include "runtime/os.hpp"
+#include "utilities/debug.hpp"
+
+inline uint32_t ZCPU::count() {
+  return os::processor_count();
+}
+
+inline uint32_t ZCPU::id() {
+  assert(_affinity != NULL, "Not initialized");
+
+  // Fast path
+  if (_affinity[_cpu]._thread == _self) {
+    return _cpu;
+  }
+
+  // Slow path
+  return id_slow();
+}
+
+#endif // SHARE_GC_Z_ZCPU_INLINE_HPP
--- a/src/hotspot/share/gc/z/zDirector.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/gc/z/zDirector.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -48,14 +48,6 @@
                        ZStatAllocRate::avg_sd() / M);
 }
 
-bool ZDirector::is_first() const {
-  return ZStatCycle::ncycles() == 0;
-}
-
-bool ZDirector::is_warm() const {
-  return ZStatCycle::ncycles() >= 3;
-}
-
 bool ZDirector::rule_timer() const {
   if (ZCollectionInterval == 0) {
     // Rule disabled
@@ -73,7 +65,7 @@
 }
 
 bool ZDirector::rule_warmup() const {
-  if (is_warm()) {
+  if (ZStatCycle::is_warm()) {
     // Rule disabled
     return false;
   }
@@ -93,7 +85,7 @@
 }
 
 bool ZDirector::rule_allocation_rate() const {
-  if (is_first()) {
+  if (ZStatCycle::is_first()) {
     // Rule disabled
     return false;
   }
@@ -140,7 +132,7 @@
 }
 
 bool ZDirector::rule_proactive() const {
-  if (!ZProactive || !is_warm()) {
+  if (!ZProactive || !ZStatCycle::is_warm()) {
     // Rule disabled
     return false;
   }
--- a/src/hotspot/share/gc/z/zDirector.hpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/gc/z/zDirector.hpp	Wed Oct 23 14:01:17 2019 -0400
@@ -36,9 +36,6 @@
 
   void sample_allocation_rate() const;
 
-  bool is_first() const;
-  bool is_warm() const;
-
   bool rule_timer() const;
   bool rule_warmup() const;
   bool rule_allocation_rate() const;
--- a/src/hotspot/share/gc/z/zDriver.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/gc/z/zDriver.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -250,11 +250,17 @@
   case GCCause::_z_allocation_stall:
   case GCCause::_z_proactive:
   case GCCause::_z_high_usage:
-  case GCCause::_metadata_GC_threshold:
     // Start asynchronous GC
     _gc_cycle_port.send_async(cause);
     break;
 
+  case GCCause::_metadata_GC_threshold:
+    // Start asynchronous GC, but only if the GC is warm
+    if (ZStatCycle::is_warm()) {
+      _gc_cycle_port.send_async(cause);
+    }
+    break;
+
   case GCCause::_gc_locker:
     // Restart VM operation previously blocked by the GC locker
     _gc_locker_port.signal();
--- a/src/hotspot/share/gc/z/zHeap.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/gc/z/zHeap.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -34,7 +34,7 @@
 #include "gc/z/zRelocationSetSelector.hpp"
 #include "gc/z/zResurrection.hpp"
 #include "gc/z/zStat.hpp"
-#include "gc/z/zThread.hpp"
+#include "gc/z/zThread.inline.hpp"
 #include "gc/z/zVerify.hpp"
 #include "gc/z/zWorkers.inline.hpp"
 #include "logging/log.hpp"
--- a/src/hotspot/share/gc/z/zList.hpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/gc/z/zList.hpp	Wed Oct 23 14:01:17 2019 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2015, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -25,7 +25,6 @@
 #define SHARE_GC_Z_ZLIST_HPP
 
 #include "memory/allocation.hpp"
-#include "utilities/debug.hpp"
 
 template <typename T> class ZList;
 
@@ -38,27 +37,15 @@
   ZListNode* _next;
   ZListNode* _prev;
 
-  ZListNode(ZListNode* next, ZListNode* prev) :
-      _next(next),
-      _prev(prev) {}
+  ZListNode(ZListNode* next, ZListNode* prev);
 
-  void set_unused() {
-    _next = NULL;
-    _prev = NULL;
-  }
+  void set_unused();
 
 public:
-  ZListNode() {
-    set_unused();
-  }
+  ZListNode();
+  ~ZListNode();
 
-  ~ZListNode() {
-    set_unused();
-  }
-
-  bool is_unused() const {
-    return _next == NULL && _prev == NULL;
-  }
+  bool is_unused() const;
 };
 
 // Doubly linked list
@@ -72,139 +59,34 @@
   ZList(const ZList<T>& list);
   ZList<T>& operator=(const ZList<T>& list);
 
-  void verify() const {
-    assert(_head._next->_prev == &_head, "List corrupt");
-    assert(_head._prev->_next == &_head, "List corrupt");
-  }
-
-  void insert(ZListNode<T>* before, ZListNode<T>* node) {
-    verify();
+  void verify() const;
 
-    assert(node->is_unused(), "Already in a list");
-    node->_prev = before;
-    node->_next = before->_next;
-    before->_next = node;
-    node->_next->_prev = node;
+  void insert(ZListNode<T>* before, ZListNode<T>* node);
 
-    _size++;
-  }
-
-  ZListNode<T>* cast_to_inner(T* elem) const {
-    return &elem->_node;
-  }
-
-  T* cast_to_outer(ZListNode<T>* node) const {
-    return (T*)((uintptr_t)node - offset_of(T, _node));
-  }
+  ZListNode<T>* cast_to_inner(T* elem) const;
+  T* cast_to_outer(ZListNode<T>* node) const;
 
 public:
-  ZList() :
-      _head(&_head, &_head),
-      _size(0) {
-    verify();
-  }
-
-  size_t size() const {
-    verify();
-    return _size;
-  }
+  ZList();
 
-  bool is_empty() const {
-    return _size == 0;
-  }
-
-  T* first() const {
-    return is_empty() ? NULL : cast_to_outer(_head._next);
-  }
-
-  T* last() const {
-    return is_empty() ? NULL : cast_to_outer(_head._prev);
-  }
+  size_t size() const;
+  bool is_empty() const;
 
-  T* next(T* elem) const {
-    verify();
-    ZListNode<T>* next = cast_to_inner(elem)->_next;
-    return (next == &_head) ? NULL : cast_to_outer(next);
-  }
-
-  T* prev(T* elem) const {
-    verify();
-    ZListNode<T>* prev = cast_to_inner(elem)->_prev;
-    return (prev == &_head) ? NULL : cast_to_outer(prev);
-  }
-
-  void insert_first(T* elem) {
-    insert(&_head, cast_to_inner(elem));
-  }
-
-  void insert_last(T* elem) {
-    insert(_head._prev, cast_to_inner(elem));
-  }
-
-  void insert_before(T* before, T* elem) {
-    insert(cast_to_inner(before)->_prev, cast_to_inner(elem));
-  }
-
-  void insert_after(T* after, T* elem) {
-    insert(cast_to_inner(after), cast_to_inner(elem));
-  }
-
-  void remove(T* elem) {
-    verify();
+  T* first() const;
+  T* last() const;
+  T* next(T* elem) const;
+  T* prev(T* elem) const;
 
-    ZListNode<T>* const node = cast_to_inner(elem);
-    assert(!node->is_unused(), "Not in a list");
-
-    ZListNode<T>* const next = node->_next;
-    ZListNode<T>* const prev = node->_prev;
-    assert(next->_prev == node, "List corrupt");
-    assert(prev->_next == node, "List corrupt");
-
-    prev->_next = next;
-    next->_prev = prev;
-    node->set_unused();
-
-    _size--;
-  }
-
-  T* remove_first() {
-    T* elem = first();
-    if (elem != NULL) {
-      remove(elem);
-    }
-
-    return elem;
-  }
+  void insert_first(T* elem);
+  void insert_last(T* elem);
+  void insert_before(T* before, T* elem);
+  void insert_after(T* after, T* elem);
 
-  T* remove_last() {
-    T* elem = last();
-    if (elem != NULL) {
-      remove(elem);
-    }
-
-    return elem;
-  }
-
-  void transfer(ZList<T>* list) {
-    verify();
+  void remove(T* elem);
+  T* remove_first();
+  T* remove_last();
 
-    if (!list->is_empty()) {
-      list->_head._next->_prev = _head._prev;
-      list->_head._prev->_next = _head._prev->_next;
-
-      _head._prev->_next = list->_head._next;
-      _head._prev = list->_head._prev;
-
-      list->_head._next = &list->_head;
-      list->_head._prev = &list->_head;
-
-      _size += list->_size;
-      list->_size = 0;
-
-      list->verify();
-      verify();
-    }
-  }
+  void transfer(ZList<T>* list);
 };
 
 template <typename T, bool forward>
@@ -226,15 +108,13 @@
 template <typename T>
 class ZListIterator : public ZListIteratorImpl<T, ZLIST_FORWARD> {
 public:
-  ZListIterator(const ZList<T>* list) :
-      ZListIteratorImpl<T, ZLIST_FORWARD>(list) {}
+  ZListIterator(const ZList<T>* list);
 };
 
 template <typename T>
 class ZListReverseIterator : public ZListIteratorImpl<T, ZLIST_REVERSE> {
 public:
-  ZListReverseIterator(const ZList<T>* list) :
-      ZListIteratorImpl<T, ZLIST_REVERSE>(list) {}
+  ZListReverseIterator(const ZList<T>* list);
 };
 
 #endif // SHARE_GC_Z_ZLIST_HPP
--- a/src/hotspot/share/gc/z/zList.inline.hpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/gc/z/zList.inline.hpp	Wed Oct 23 14:01:17 2019 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2015, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -25,14 +25,193 @@
 #define SHARE_GC_Z_ZLIST_INLINE_HPP
 
 #include "gc/z/zList.hpp"
+#include "utilities/debug.hpp"
+
+template <typename T>
+inline ZListNode<T>::ZListNode(ZListNode* next, ZListNode* prev) :
+    _next(next),
+    _prev(prev) {}
+
+template <typename T>
+inline void ZListNode<T>::set_unused() {
+  _next = NULL;
+  _prev = NULL;
+}
+
+template <typename T>
+inline ZListNode<T>::ZListNode() {
+  set_unused();
+}
+
+template <typename T>
+inline ZListNode<T>::~ZListNode() {
+  set_unused();
+}
+
+template <typename T>
+inline bool ZListNode<T>::is_unused() const {
+  return _next == NULL && _prev == NULL;
+}
+
+template <typename T>
+inline void ZList<T>::verify() const {
+  assert(_head._next->_prev == &_head, "List corrupt");
+  assert(_head._prev->_next == &_head, "List corrupt");
+}
+
+template <typename T>
+inline void ZList<T>::insert(ZListNode<T>* before, ZListNode<T>* node) {
+  verify();
+
+  assert(node->is_unused(), "Already in a list");
+  node->_prev = before;
+  node->_next = before->_next;
+  before->_next = node;
+  node->_next->_prev = node;
+
+  _size++;
+}
+
+template <typename T>
+inline ZListNode<T>* ZList<T>::cast_to_inner(T* elem) const {
+  return &elem->_node;
+}
+
+template <typename T>
+inline T* ZList<T>::cast_to_outer(ZListNode<T>* node) const {
+  return (T*)((uintptr_t)node - offset_of(T, _node));
+}
+
+template <typename T>
+inline ZList<T>::ZList() :
+    _head(&_head, &_head),
+    _size(0) {
+  verify();
+}
+
+template <typename T>
+inline size_t ZList<T>::size() const {
+  verify();
+  return _size;
+}
+
+template <typename T>
+inline bool ZList<T>::is_empty() const {
+  return _size == 0;
+}
+
+template <typename T>
+inline T* ZList<T>::first() const {
+  return is_empty() ? NULL : cast_to_outer(_head._next);
+}
+
+template <typename T>
+inline T* ZList<T>::last() const {
+  return is_empty() ? NULL : cast_to_outer(_head._prev);
+}
+
+template <typename T>
+inline T* ZList<T>::next(T* elem) const {
+  verify();
+  ZListNode<T>* next = cast_to_inner(elem)->_next;
+  return (next == &_head) ? NULL : cast_to_outer(next);
+}
+
+template <typename T>
+inline T* ZList<T>::prev(T* elem) const {
+  verify();
+  ZListNode<T>* prev = cast_to_inner(elem)->_prev;
+  return (prev == &_head) ? NULL : cast_to_outer(prev);
+}
+
+template <typename T>
+inline void ZList<T>::insert_first(T* elem) {
+  insert(&_head, cast_to_inner(elem));
+}
+
+template <typename T>
+inline void ZList<T>::insert_last(T* elem) {
+  insert(_head._prev, cast_to_inner(elem));
+}
+
+template <typename T>
+inline void ZList<T>::insert_before(T* before, T* elem) {
+  insert(cast_to_inner(before)->_prev, cast_to_inner(elem));
+}
+
+template <typename T>
+inline void ZList<T>::insert_after(T* after, T* elem) {
+  insert(cast_to_inner(after), cast_to_inner(elem));
+}
+
+template <typename T>
+inline void ZList<T>::remove(T* elem) {
+  verify();
+
+  ZListNode<T>* const node = cast_to_inner(elem);
+  assert(!node->is_unused(), "Not in a list");
+
+  ZListNode<T>* const next = node->_next;
+  ZListNode<T>* const prev = node->_prev;
+  assert(next->_prev == node, "List corrupt");
+  assert(prev->_next == node, "List corrupt");
+
+  prev->_next = next;
+  next->_prev = prev;
+  node->set_unused();
+
+  _size--;
+}
+
+template <typename T>
+inline T* ZList<T>::remove_first() {
+  T* elem = first();
+  if (elem != NULL) {
+    remove(elem);
+  }
+
+  return elem;
+}
+
+template <typename T>
+inline T* ZList<T>::remove_last() {
+  T* elem = last();
+  if (elem != NULL) {
+    remove(elem);
+  }
+
+  return elem;
+}
+
+template <typename T>
+inline void ZList<T>::transfer(ZList<T>* list) {
+  verify();
+
+  if (!list->is_empty()) {
+    list->_head._next->_prev = _head._prev;
+    list->_head._prev->_next = _head._prev->_next;
+
+    _head._prev->_next = list->_head._next;
+    _head._prev = list->_head._prev;
+
+    list->_head._next = &list->_head;
+    list->_head._prev = &list->_head;
+
+    _size += list->_size;
+    list->_size = 0;
+
+    list->verify();
+    verify();
+  }
+}
 
 template <typename T, bool forward>
-ZListIteratorImpl<T, forward>::ZListIteratorImpl(const ZList<T>* list) :
+inline ZListIteratorImpl<T, forward>::ZListIteratorImpl(const ZList<T>* list) :
     _list(list),
     _next(forward ? list->first() : list->last()) {}
 
 template <typename T, bool forward>
-bool ZListIteratorImpl<T, forward>::next(T** elem) {
+inline bool ZListIteratorImpl<T, forward>::next(T** elem) {
   if (_next != NULL) {
     *elem = _next;
     _next = forward ? _list->next(_next) : _list->prev(_next);
@@ -43,4 +222,12 @@
   return false;
 }
 
+template <typename T>
+inline ZListIterator<T>::ZListIterator(const ZList<T>* list) :
+    ZListIteratorImpl<T, ZLIST_FORWARD>(list) {}
+
+template <typename T>
+inline ZListReverseIterator<T>::ZListReverseIterator(const ZList<T>* list) :
+    ZListIteratorImpl<T, ZLIST_REVERSE>(list) {}
+
 #endif // SHARE_GC_Z_ZLIST_INLINE_HPP
--- a/src/hotspot/share/gc/z/zLiveMap.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/gc/z/zLiveMap.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -25,7 +25,7 @@
 #include "gc/z/zHeap.inline.hpp"
 #include "gc/z/zLiveMap.inline.hpp"
 #include "gc/z/zStat.hpp"
-#include "gc/z/zThread.hpp"
+#include "gc/z/zThread.inline.hpp"
 #include "logging/log.hpp"
 #include "runtime/atomic.hpp"
 #include "runtime/orderAccess.hpp"
--- a/src/hotspot/share/gc/z/zMark.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/gc/z/zMark.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -34,7 +34,7 @@
 #include "gc/z/zRootsIterator.hpp"
 #include "gc/z/zStat.hpp"
 #include "gc/z/zTask.hpp"
-#include "gc/z/zThread.hpp"
+#include "gc/z/zThread.inline.hpp"
 #include "gc/z/zThreadLocalAllocBuffer.hpp"
 #include "gc/z/zUtils.inline.hpp"
 #include "gc/z/zWorkers.inline.hpp"
--- a/src/hotspot/share/gc/z/zMemory.inline.hpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/gc/z/zMemory.inline.hpp	Wed Oct 23 14:01:17 2019 -0400
@@ -24,6 +24,7 @@
 #ifndef SHARE_GC_Z_ZMEMORY_INLINE_HPP
 #define SHARE_GC_Z_ZMEMORY_INLINE_HPP
 
+#include "gc/z/zList.inline.hpp"
 #include "gc/z/zMemory.hpp"
 #include "utilities/debug.hpp"
 
--- a/src/hotspot/share/gc/z/zObjectAllocator.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/gc/z/zObjectAllocator.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015, 2019, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2015, 2018, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -28,8 +28,9 @@
 #include "gc/z/zObjectAllocator.hpp"
 #include "gc/z/zPage.inline.hpp"
 #include "gc/z/zStat.hpp"
-#include "gc/z/zThread.hpp"
+#include "gc/z/zThread.inline.hpp"
 #include "gc/z/zUtils.inline.hpp"
+#include "gc/z/zValue.inline.hpp"
 #include "logging/log.hpp"
 #include "runtime/atomic.hpp"
 #include "runtime/safepoint.hpp"
--- a/src/hotspot/share/gc/z/zObjectAllocator.hpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/gc/z/zObjectAllocator.hpp	Wed Oct 23 14:01:17 2019 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015, 2018, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2015, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
--- a/src/hotspot/share/gc/z/zPage.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/gc/z/zPage.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -22,6 +22,7 @@
  */
 
 #include "precompiled.hpp"
+#include "gc/z/zList.inline.hpp"
 #include "gc/z/zPage.inline.hpp"
 #include "gc/z/zPhysicalMemory.inline.hpp"
 #include "gc/z/zVirtualMemory.inline.hpp"
@@ -52,6 +53,8 @@
   assert_initialized();
 }
 
+ZPage::~ZPage() {}
+
 void ZPage::assert_initialized() const {
   assert(!_virtual.is_null(), "Should not be null");
   assert(!_physical.is_null(), "Should not be null");
--- a/src/hotspot/share/gc/z/zPage.hpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/gc/z/zPage.hpp	Wed Oct 23 14:01:17 2019 -0400
@@ -56,6 +56,7 @@
 public:
   ZPage(const ZVirtualMemory& vmem, const ZPhysicalMemory& pmem);
   ZPage(uint8_t type, const ZVirtualMemory& vmem, const ZPhysicalMemory& pmem);
+  ~ZPage();
 
   uint32_t object_max_count() const;
   size_t object_alignment_shift() const;
--- a/src/hotspot/share/gc/z/zPageCache.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/gc/z/zPageCache.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -27,6 +27,7 @@
 #include "gc/z/zPage.inline.hpp"
 #include "gc/z/zPageCache.hpp"
 #include "gc/z/zStat.hpp"
+#include "gc/z/zValue.inline.hpp"
 #include "logging/log.hpp"
 
 static const ZStatCounter ZCounterPageCacheHitL1("Memory", "Page Cache Hit L1", ZStatUnitOpsPerSecond);
--- a/src/hotspot/share/gc/z/zPageCache.inline.hpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/gc/z/zPageCache.inline.hpp	Wed Oct 23 14:01:17 2019 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2015, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -26,6 +26,7 @@
 
 #include "gc/z/zList.inline.hpp"
 #include "gc/z/zPageCache.hpp"
+#include "gc/z/zValue.inline.hpp"
 
 inline size_t ZPageCache::available() const {
   return _available;
--- a/src/hotspot/share/gc/z/zReferenceProcessor.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/gc/z/zReferenceProcessor.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -32,6 +32,7 @@
 #include "gc/z/zTask.hpp"
 #include "gc/z/zTracer.inline.hpp"
 #include "gc/z/zUtils.inline.hpp"
+#include "gc/z/zValue.inline.hpp"
 #include "memory/universe.hpp"
 #include "runtime/mutexLocker.hpp"
 #include "runtime/os.hpp"
--- a/src/hotspot/share/gc/z/zRelocate.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/gc/z/zRelocate.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -33,6 +33,7 @@
 #include "gc/z/zRootsIterator.hpp"
 #include "gc/z/zStat.hpp"
 #include "gc/z/zTask.hpp"
+#include "gc/z/zThread.inline.hpp"
 #include "gc/z/zThreadLocalAllocBuffer.hpp"
 #include "gc/z/zWorkers.hpp"
 #include "logging/log.hpp"
--- a/src/hotspot/share/gc/z/zStat.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/gc/z/zStat.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -23,7 +23,7 @@
 
 #include "precompiled.hpp"
 #include "gc/z/zCollectedHeap.hpp"
-#include "gc/z/zCPU.hpp"
+#include "gc/z/zCPU.inline.hpp"
 #include "gc/z/zGlobals.hpp"
 #include "gc/z/zHeap.inline.hpp"
 #include "gc/z/zLargePages.inline.hpp"
@@ -716,7 +716,7 @@
 }
 
 void ZStatSubPhase::register_end(const Ticks& start, const Ticks& end) const {
-  ZTracer::tracer()->report_thread_phase(*this, start, end);
+  ZTracer::tracer()->report_thread_phase(name(), start, end);
 
   const Tickspan duration = end - start;
   ZStatSample(_sampler, duration.value());
@@ -736,7 +736,7 @@
 }
 
 void ZStatCriticalPhase::register_end(const Ticks& start, const Ticks& end) const {
-  ZTracer::tracer()->report_thread_phase(*this, start, end);
+  ZTracer::tracer()->report_thread_phase(name(), start, end);
 
   const Tickspan duration = end - start;
   ZStatSample(_sampler, duration.value());
@@ -759,7 +759,7 @@
 //
 // Stat sample/inc
 //
-void ZStatSample(const ZStatSampler& sampler, uint64_t value, bool trace) {
+void ZStatSample(const ZStatSampler& sampler, uint64_t value) {
   ZStatSamplerData* const cpu_data = sampler.get();
   Atomic::add(1u, &cpu_data->_nsamples);
   Atomic::add(value, &cpu_data->_sum);
@@ -782,18 +782,14 @@
     max = prev_max;
   }
 
-  if (trace) {
-    ZTracer::tracer()->report_stat_sampler(sampler, value);
-  }
+  ZTracer::tracer()->report_stat_sampler(sampler, value);
 }
 
-void ZStatInc(const ZStatCounter& counter, uint64_t increment, bool trace) {
+void ZStatInc(const ZStatCounter& counter, uint64_t increment) {
   ZStatCounterData* const cpu_data = counter.get();
   const uint64_t value = Atomic::add(increment, &cpu_data->_counter);
 
-  if (trace) {
-    ZTracer::tracer()->report_stat_counter(counter, increment, value);
-  }
+  ZTracer::tracer()->report_stat_counter(counter, increment, value);
 }
 
 void ZStatInc(const ZStatUnsampledCounter& counter, uint64_t increment) {
@@ -1049,6 +1045,14 @@
   _normalized_duration.add(normalized_duration);
 }
 
+bool ZStatCycle::is_first() {
+  return _ncycles == 0;
+}
+
+bool ZStatCycle::is_warm() {
+  return _ncycles >= 3;
+}
+
 uint64_t ZStatCycle::ncycles() {
   return _ncycles;
 }
@@ -1215,6 +1219,20 @@
 ZStatHeap::ZAtRelocateStart ZStatHeap::_at_relocate_start;
 ZStatHeap::ZAtRelocateEnd ZStatHeap::_at_relocate_end;
 
+size_t ZStatHeap::capacity_high() {
+  return MAX4(_at_mark_start.capacity,
+              _at_mark_end.capacity,
+              _at_relocate_start.capacity,
+              _at_relocate_end.capacity);
+}
+
+size_t ZStatHeap::capacity_low() {
+  return MIN4(_at_mark_start.capacity,
+              _at_mark_end.capacity,
+              _at_relocate_start.capacity,
+              _at_relocate_end.capacity);
+}
+
 size_t ZStatHeap::available(size_t used) {
   return _at_initialize.max_capacity - used;
 }
@@ -1282,8 +1300,8 @@
                                     size_t used_high,
                                     size_t used_low) {
   _at_relocate_end.capacity = capacity;
-  _at_relocate_end.capacity_high = capacity;
-  _at_relocate_end.capacity_low = _at_mark_start.capacity;
+  _at_relocate_end.capacity_high = capacity_high();
+  _at_relocate_end.capacity_low = capacity_low();
   _at_relocate_end.reserve = reserve(used);
   _at_relocate_end.reserve_high = reserve(used_low);
   _at_relocate_end.reserve_low = reserve(used_high);
--- a/src/hotspot/share/gc/z/zStat.hpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/gc/z/zStat.hpp	Wed Oct 23 14:01:17 2019 -0400
@@ -315,8 +315,8 @@
 //
 // Stat sample/increment
 //
-void ZStatSample(const ZStatSampler& sampler, uint64_t value, bool trace = ZStatisticsForceTrace);
-void ZStatInc(const ZStatCounter& counter, uint64_t increment = 1, bool trace = ZStatisticsForceTrace);
+void ZStatSample(const ZStatSampler& sampler, uint64_t value);
+void ZStatInc(const ZStatCounter& counter, uint64_t increment = 1);
 void ZStatInc(const ZStatUnsampledCounter& counter, uint64_t increment = 1);
 
 //
@@ -374,6 +374,8 @@
   static void at_start();
   static void at_end(double boost_factor);
 
+  static bool is_first();
+  static bool is_warm();
   static uint64_t ncycles();
   static const AbsSeq& normalized_duration();
   static double time_since_last();
@@ -519,6 +521,8 @@
     size_t free_low;
   } _at_relocate_end;
 
+  static size_t capacity_high();
+  static size_t capacity_low();
   static size_t available(size_t used);
   static size_t reserve(size_t used);
   static size_t free(size_t used);
--- a/src/hotspot/share/gc/z/zThread.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/gc/z/zThread.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2015, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -22,7 +22,7 @@
  */
 
 #include "precompiled.hpp"
-#include "gc/z/zThread.hpp"
+#include "gc/z/zThread.inline.hpp"
 #include "runtime/thread.hpp"
 #include "utilities/debug.hpp"
 
--- a/src/hotspot/share/gc/z/zThread.hpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/gc/z/zThread.hpp	Wed Oct 23 14:01:17 2019 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2015, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -26,7 +26,6 @@
 
 #include "memory/allocation.hpp"
 #include "utilities/globalDefinitions.hpp"
-#include "utilities/debug.hpp"
 
 class ZThread : public AllStatic {
   friend class ZTask;
@@ -43,12 +42,7 @@
   static THREAD_LOCAL uint      _worker_id;
 
   static void initialize();
-
-  static void ensure_initialized() {
-    if (!_initialized) {
-      initialize();
-    }
-  }
+  static void ensure_initialized();
 
   static void set_worker();
   static void set_runtime_worker();
@@ -59,36 +53,12 @@
 
 public:
   static const char* name();
-
-  static uintptr_t id() {
-    ensure_initialized();
-    return _id;
-  }
-
-  static bool is_vm() {
-    ensure_initialized();
-    return _is_vm;
-  }
-
-  static bool is_java() {
-    ensure_initialized();
-    return _is_java;
-  }
-
-  static bool is_worker() {
-    ensure_initialized();
-    return _is_worker;
-  }
-
-  static bool is_runtime_worker() {
-    ensure_initialized();
-    return _is_runtime_worker;
-  }
-
-  static uint worker_id() {
-    assert(has_worker_id(), "Worker id not initialized");
-    return _worker_id;
-  }
+  static uintptr_t id();
+  static bool is_vm();
+  static bool is_java();
+  static bool is_worker();
+  static bool is_runtime_worker();
+  static uint worker_id();
 };
 
 #endif // SHARE_GC_Z_ZTHREAD_HPP
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hotspot/share/gc/z/zThread.inline.hpp	Wed Oct 23 14:01:17 2019 -0400
@@ -0,0 +1,66 @@
+/*
+ * Copyright (c) 2015, 2019, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+#ifndef SHARE_GC_Z_ZTHREAD_INLINE_HPP
+#define SHARE_GC_Z_ZTHREAD_INLINE_HPP
+
+#include "gc/z/zThread.hpp"
+#include "utilities/debug.hpp"
+
+inline void ZThread::ensure_initialized() {
+  if (!_initialized) {
+    initialize();
+  }
+}
+
+inline uintptr_t ZThread::id() {
+  ensure_initialized();
+  return _id;
+}
+
+inline bool ZThread::is_vm() {
+  ensure_initialized();
+  return _is_vm;
+}
+
+inline bool ZThread::is_java() {
+  ensure_initialized();
+  return _is_java;
+}
+
+inline bool ZThread::is_worker() {
+  ensure_initialized();
+  return _is_worker;
+}
+
+inline bool ZThread::is_runtime_worker() {
+  ensure_initialized();
+  return _is_runtime_worker;
+}
+
+inline uint ZThread::worker_id() {
+  assert(has_worker_id(), "Worker id not initialized");
+  return _worker_id;
+}
+
+#endif // SHARE_GC_Z_ZTHREAD_INLINE_HPP
--- a/src/hotspot/share/gc/z/zThreadLocalAllocBuffer.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/gc/z/zThreadLocalAllocBuffer.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -24,6 +24,7 @@
 #include "precompiled.hpp"
 #include "gc/z/zAddress.inline.hpp"
 #include "gc/z/zThreadLocalAllocBuffer.hpp"
+#include "gc/z/zValue.inline.hpp"
 #include "runtime/globals.hpp"
 #include "runtime/thread.hpp"
 
--- a/src/hotspot/share/gc/z/zTracer.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/gc/z/zTracer.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -22,18 +22,19 @@
  */
 
 #include "precompiled.hpp"
+#include "gc/shared/gcId.hpp"
 #include "gc/z/zStat.hpp"
 #include "gc/z/zTracer.hpp"
-#include "gc/shared/gcId.hpp"
-#include "gc/shared/gcLocker.hpp"
 #include "jfr/jfrEvents.hpp"
-#include "runtime/safepoint.hpp"
 #include "runtime/safepointVerifiers.hpp"
+#include "utilities/debug.hpp"
+#include "utilities/macros.hpp"
 #if INCLUDE_JFR
 #include "jfr/metadata/jfrSerializer.hpp"
 #endif
 
 #if INCLUDE_JFR
+
 class ZStatisticsCounterTypeConstant : public JfrSerializer {
 public:
   virtual void serialize(JfrCheckpointWriter& writer) {
@@ -66,7 +67,8 @@
                                      true /* permit_cache */,
                                      new ZStatisticsSamplerTypeConstant());
 }
-#endif
+
+#endif // INCLUDE_JFR
 
 ZTracer* ZTracer::_tracer = NULL;
 
@@ -79,24 +81,24 @@
   JFR_ONLY(register_jfr_type_serializers());
 }
 
-void ZTracer::send_stat_counter(uint32_t counter_id, uint64_t increment, uint64_t value) {
+void ZTracer::send_stat_counter(const ZStatCounter& counter, uint64_t increment, uint64_t value) {
   NoSafepointVerifier nsv;
 
   EventZStatisticsCounter e;
   if (e.should_commit()) {
-    e.set_id(counter_id);
+    e.set_id(counter.id());
     e.set_increment(increment);
     e.set_value(value);
     e.commit();
   }
 }
 
-void ZTracer::send_stat_sampler(uint32_t sampler_id, uint64_t value) {
+void ZTracer::send_stat_sampler(const ZStatSampler& sampler, uint64_t value) {
   NoSafepointVerifier nsv;
 
   EventZStatisticsSampler e;
   if (e.should_commit()) {
-    e.set_id(sampler_id);
+    e.set_id(sampler.id());
     e.set_value(value);
     e.commit();
   }
@@ -115,7 +117,7 @@
   }
 }
 
-void ZTracer::send_page_alloc(size_t size, size_t used, size_t free, size_t cache, bool nonblocking, bool noreserve) {
+void ZTracer::send_page_alloc(size_t size, size_t used, size_t free, size_t cache, ZAllocationFlags flags) {
   NoSafepointVerifier nsv;
 
   EventZPageAllocation e;
@@ -124,28 +126,8 @@
     e.set_usedAfter(used);
     e.set_freeAfter(free);
     e.set_inCacheAfter(cache);
-    e.set_nonBlocking(nonblocking);
-    e.set_noReserve(noreserve);
+    e.set_nonBlocking(flags.non_blocking());
+    e.set_noReserve(flags.no_reserve());
     e.commit();
   }
 }
-
-void ZTracer::report_stat_counter(const ZStatCounter& counter, uint64_t increment, uint64_t value) {
-  send_stat_counter(counter.id(), increment, value);
-}
-
-void ZTracer::report_stat_sampler(const ZStatSampler& sampler, uint64_t value) {
-  send_stat_sampler(sampler.id(), value);
-}
-
-void ZTracer::report_thread_phase(const ZStatPhase& phase, const Ticks& start, const Ticks& end) {
-  send_thread_phase(phase.name(), start, end);
-}
-
-void ZTracer::report_thread_phase(const char* name, const Ticks& start, const Ticks& end) {
-  send_thread_phase(name, start, end);
-}
-
-void ZTracer::report_page_alloc(size_t size, size_t used, size_t free, size_t cache, ZAllocationFlags flags) {
-  send_page_alloc(size, used, free, cache, flags.non_blocking(), flags.no_reserve());
-}
--- a/src/hotspot/share/gc/z/zTracer.hpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/gc/z/zTracer.hpp	Wed Oct 23 14:01:17 2019 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2016, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -37,10 +37,10 @@
 
   ZTracer();
 
-  void send_stat_counter(uint32_t counter_id, uint64_t increment, uint64_t value);
-  void send_stat_sampler(uint32_t sampler_id, uint64_t value);
+  void send_stat_counter(const ZStatCounter& counter, uint64_t increment, uint64_t value);
+  void send_stat_sampler(const ZStatSampler& sampler, uint64_t value);
   void send_thread_phase(const char* name, const Ticks& start, const Ticks& end);
-  void send_page_alloc(size_t size, size_t used, size_t free, size_t cache, bool nonblocking, bool noreserve);
+  void send_page_alloc(size_t size, size_t used, size_t free, size_t cache, ZAllocationFlags flags);
 
 public:
   static ZTracer* tracer();
@@ -48,7 +48,6 @@
 
   void report_stat_counter(const ZStatCounter& counter, uint64_t increment, uint64_t value);
   void report_stat_sampler(const ZStatSampler& sampler, uint64_t value);
-  void report_thread_phase(const ZStatPhase& phase, const Ticks& start, const Ticks& end);
   void report_thread_phase(const char* name, const Ticks& start, const Ticks& end);
   void report_page_alloc(size_t size, size_t used, size_t free, size_t cache, ZAllocationFlags flags);
 };
--- a/src/hotspot/share/gc/z/zTracer.inline.hpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/gc/z/zTracer.inline.hpp	Wed Oct 23 14:01:17 2019 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2016, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -24,12 +24,38 @@
 #ifndef SHARE_GC_Z_ZTRACER_INLINE_HPP
 #define SHARE_GC_Z_ZTRACER_INLINE_HPP
 
+#include "gc/z/zStat.hpp"
 #include "gc/z/zTracer.hpp"
+#include "jfr/jfrEvents.hpp"
 
 inline ZTracer* ZTracer::tracer() {
   return _tracer;
 }
 
+inline void ZTracer::report_stat_counter(const ZStatCounter& counter, uint64_t increment, uint64_t value) {
+  if (EventZStatisticsCounter::is_enabled()) {
+    send_stat_counter(counter, increment, value);
+  }
+}
+
+inline void ZTracer::report_stat_sampler(const ZStatSampler& sampler, uint64_t value) {
+  if (EventZStatisticsSampler::is_enabled()) {
+    send_stat_sampler(sampler, value);
+  }
+}
+
+inline void ZTracer::report_thread_phase(const char* name, const Ticks& start, const Ticks& end) {
+  if (EventZThreadPhase::is_enabled()) {
+    send_thread_phase(name, start, end);
+  }
+}
+
+inline void ZTracer::report_page_alloc(size_t size, size_t used, size_t free, size_t cache, ZAllocationFlags flags) {
+  if (EventZPageAllocation::is_enabled()) {
+    send_page_alloc(size, used, free, cache, flags);
+  }
+}
+
 inline ZTraceThreadPhase::ZTraceThreadPhase(const char* name) :
     _start(Ticks::now()),
     _name(name) {}
--- a/src/hotspot/share/gc/z/zValue.hpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/gc/z/zValue.hpp	Wed Oct 23 14:01:17 2019 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015, 2018, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2015, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -25,13 +25,11 @@
 #define SHARE_GC_Z_ZVALUE_HPP
 
 #include "memory/allocation.hpp"
-#include "gc/z/zCPU.hpp"
-#include "gc/z/zGlobals.hpp"
-#include "gc/z/zNUMA.hpp"
-#include "gc/z/zThread.hpp"
-#include "gc/z/zUtils.hpp"
-#include "runtime/globals.hpp"
-#include "utilities/align.hpp"
+#include "utilities/globalDefinitions.hpp"
+
+//
+// Storage
+//
 
 template <typename S>
 class ZValueStorage : public AllStatic {
@@ -42,202 +40,93 @@
 public:
   static const size_t offset = 4 * K;
 
-  static uintptr_t alloc(size_t size) {
-    guarantee(size <= offset, "Allocation too large");
-
-    // Allocate entry in existing memory block
-    const uintptr_t addr = align_up(_top, S::alignment());
-    _top = addr + size;
-
-    if (_top < _end) {
-      // Success
-      return addr;
-    }
-
-    // Allocate new block of memory
-    const size_t block_alignment = offset;
-    const size_t block_size = offset * S::count();
-    _top = ZUtils::alloc_aligned(block_alignment, block_size);
-    _end = _top + offset;
-
-    // Retry allocation
-    return alloc(size);
-  }
+  static uintptr_t alloc(size_t size);
 };
 
-template <typename T> uintptr_t ZValueStorage<T>::_end = 0;
-template <typename T> uintptr_t ZValueStorage<T>::_top = 0;
-
 class ZContendedStorage : public ZValueStorage<ZContendedStorage> {
 public:
-  static size_t alignment() {
-    return ZCacheLineSize;
-  }
-
-  static uint32_t count() {
-    return 1;
-  }
-
-  static uint32_t id() {
-    return 0;
-  }
+  static size_t alignment();
+  static uint32_t count();
+  static uint32_t id();
 };
 
 class ZPerCPUStorage : public ZValueStorage<ZPerCPUStorage> {
 public:
-  static size_t alignment() {
-    return sizeof(uintptr_t);
-  }
-
-  static uint32_t count() {
-    return ZCPU::count();
-  }
-
-  static uint32_t id() {
-    return ZCPU::id();
-  }
+  static size_t alignment();
+  static uint32_t count();
+  static uint32_t id();
 };
 
 class ZPerNUMAStorage : public ZValueStorage<ZPerNUMAStorage> {
 public:
-  static size_t alignment() {
-    return sizeof(uintptr_t);
-  }
-
-  static uint32_t count() {
-    return ZNUMA::count();
-  }
-
-  static uint32_t id() {
-    return ZNUMA::id();
-  }
+  static size_t alignment();
+  static uint32_t count();
+  static uint32_t id();
 };
 
 class ZPerWorkerStorage : public ZValueStorage<ZPerWorkerStorage> {
 public:
-  static size_t alignment() {
-    return sizeof(uintptr_t);
-  }
-
-  static uint32_t count() {
-    return MAX2(ParallelGCThreads, ConcGCThreads);
-  }
-
-  static uint32_t id() {
-    return ZThread::worker_id();
-  }
+  static size_t alignment();
+  static uint32_t count();
+  static uint32_t id();
 };
 
-template <typename S, typename T>
-class ZValueIterator;
+//
+// Value
+//
 
 template <typename S, typename T>
 class ZValue : public CHeapObj<mtGC> {
 private:
   const uintptr_t _addr;
 
-  uintptr_t value_addr(uint32_t value_id) const {
-    return _addr + (value_id * S::offset);
-  }
+  uintptr_t value_addr(uint32_t value_id) const;
 
 public:
-  ZValue() :
-      _addr(S::alloc(sizeof(T))) {
-    // Initialize all instances
-    ZValueIterator<S, T> iter(this);
-    for (T* addr; iter.next(&addr);) {
-      ::new (addr) T;
-    }
-  }
+  ZValue();
+  ZValue(const T& value);
 
-  ZValue(const T& value) :
-      _addr(S::alloc(sizeof(T))) {
-    // Initialize all instances
-    ZValueIterator<S, T> iter(this);
-    for (T* addr; iter.next(&addr);) {
-      ::new (addr) T(value);
-    }
-  }
-
-  // Not implemented
-  ZValue(const ZValue<S, T>& value);
-  ZValue<S, T>& operator=(const ZValue<S, T>& value);
+  const T* addr(uint32_t value_id = S::id()) const;
+  T* addr(uint32_t value_id = S::id());
 
-  const T* addr(uint32_t value_id = S::id()) const {
-    return reinterpret_cast<const T*>(value_addr(value_id));
-  }
-
-  T* addr(uint32_t value_id = S::id()) {
-    return reinterpret_cast<T*>(value_addr(value_id));
-  }
-
-  const T& get(uint32_t value_id = S::id()) const {
-    return *addr(value_id);
-  }
+  const T& get(uint32_t value_id = S::id()) const;
+  T& get(uint32_t value_id = S::id());
 
-  T& get(uint32_t value_id = S::id()) {
-    return *addr(value_id);
-  }
-
-  void set(const T& value, uint32_t value_id = S::id()) {
-    get(value_id) = value;
-  }
-
-  void set_all(const T& value) {
-    ZValueIterator<S, T> iter(this);
-    for (T* addr; iter.next(&addr);) {
-      *addr = value;
-    }
-  }
+  void set(const T& value, uint32_t value_id = S::id());
+  void set_all(const T& value);
 };
 
 template <typename T>
 class ZContended : public ZValue<ZContendedStorage, T> {
 public:
-  ZContended() :
-      ZValue<ZContendedStorage, T>() {}
-
-  ZContended(const T& value) :
-      ZValue<ZContendedStorage, T>(value) {}
-
-  using ZValue<ZContendedStorage, T>::operator=;
+  ZContended();
+  ZContended(const T& value);
 };
 
 template <typename T>
 class ZPerCPU : public ZValue<ZPerCPUStorage, T> {
 public:
-  ZPerCPU() :
-      ZValue<ZPerCPUStorage, T>() {}
-
-  ZPerCPU(const T& value) :
-      ZValue<ZPerCPUStorage, T>(value) {}
-
-  using ZValue<ZPerCPUStorage, T>::operator=;
+  ZPerCPU();
+  ZPerCPU(const T& value);
 };
 
 template <typename T>
 class ZPerNUMA : public ZValue<ZPerNUMAStorage, T> {
 public:
-  ZPerNUMA() :
-      ZValue<ZPerNUMAStorage, T>() {}
-
-  ZPerNUMA(const T& value) :
-      ZValue<ZPerNUMAStorage, T>(value) {}
-
-  using ZValue<ZPerNUMAStorage, T>::operator=;
+  ZPerNUMA();
+  ZPerNUMA(const T& value);
 };
 
 template <typename T>
 class ZPerWorker : public ZValue<ZPerWorkerStorage, T> {
 public:
-  ZPerWorker() :
-      ZValue<ZPerWorkerStorage, T>() {}
+  ZPerWorker();
+  ZPerWorker(const T& value);
+};
 
-  ZPerWorker(const T& value) :
-      ZValue<ZPerWorkerStorage, T>(value) {}
-
-  using ZValue<ZPerWorkerStorage, T>::operator=;
-};
+//
+// Iterator
+//
 
 template <typename S, typename T>
 class ZValueIterator {
@@ -246,38 +135,27 @@
   uint32_t            _value_id;
 
 public:
-  ZValueIterator(ZValue<S, T>* value) :
-      _value(value),
-      _value_id(0) {}
+  ZValueIterator(ZValue<S, T>* value);
 
-  bool next(T** value) {
-    if (_value_id < S::count()) {
-      *value = _value->addr(_value_id++);
-      return true;
-    }
-    return false;
-  }
+  bool next(T** value);
 };
 
 template <typename T>
 class ZPerCPUIterator : public ZValueIterator<ZPerCPUStorage, T> {
 public:
-  ZPerCPUIterator(ZPerCPU<T>* value) :
-      ZValueIterator<ZPerCPUStorage, T>(value) {}
+  ZPerCPUIterator(ZPerCPU<T>* value);
 };
 
 template <typename T>
 class ZPerNUMAIterator : public ZValueIterator<ZPerNUMAStorage, T> {
 public:
-  ZPerNUMAIterator(ZPerNUMA<T>* value) :
-      ZValueIterator<ZPerNUMAStorage, T>(value) {}
+  ZPerNUMAIterator(ZPerNUMA<T>* value);
 };
 
 template <typename T>
 class ZPerWorkerIterator : public ZValueIterator<ZPerWorkerStorage, T> {
 public:
-  ZPerWorkerIterator(ZPerWorker<T>* value) :
-      ZValueIterator<ZPerWorkerStorage, T>(value) {}
+  ZPerWorkerIterator(ZPerWorker<T>* value);
 };
 
 template <typename S, typename T>
@@ -287,38 +165,27 @@
   uint32_t                  _value_id;
 
 public:
-  ZValueConstIterator(const ZValue<S, T>* value) :
-      _value(value),
-      _value_id(0) {}
+  ZValueConstIterator(const ZValue<S, T>* value);
 
-  bool next(const T** value) {
-    if (_value_id < S::count()) {
-      *value = _value->addr(_value_id++);
-      return true;
-    }
-    return false;
-  }
+  bool next(const T** value);
 };
 
 template <typename T>
 class ZPerCPUConstIterator : public ZValueConstIterator<ZPerCPUStorage, T> {
 public:
-  ZPerCPUConstIterator(const ZPerCPU<T>* value) :
-      ZValueConstIterator<ZPerCPUStorage, T>(value) {}
+  ZPerCPUConstIterator(const ZPerCPU<T>* value);
 };
 
 template <typename T>
 class ZPerNUMAConstIterator : public ZValueConstIterator<ZPerNUMAStorage, T> {
 public:
-  ZPerNUMAConstIterator(const ZPerNUMA<T>* value) :
-      ZValueConstIterator<ZPerNUMAStorage, T>(value) {}
+  ZPerNUMAConstIterator(const ZPerNUMA<T>* value);
 };
 
 template <typename T>
 class ZPerWorkerConstIterator : public ZValueConstIterator<ZPerWorkerStorage, T> {
 public:
-  ZPerWorkerConstIterator(const ZPerWorker<T>* value) :
-      ZValueConstIterator<ZPerWorkerStorage, T>(value) {}
+  ZPerWorkerConstIterator(const ZPerWorker<T>* value);
 };
 
 #endif // SHARE_GC_Z_ZVALUE_HPP
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hotspot/share/gc/z/zValue.inline.hpp	Wed Oct 23 14:01:17 2019 -0400
@@ -0,0 +1,264 @@
+/*
+ * Copyright (c) 2015, 2019, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+#ifndef SHARE_GC_Z_ZVALUE_INLINE_HPP
+#define SHARE_GC_Z_ZVALUE_INLINE_HPP
+
+#include "gc/z/zCPU.inline.hpp"
+#include "gc/z/zGlobals.hpp"
+#include "gc/z/zNUMA.hpp"
+#include "gc/z/zThread.inline.hpp"
+#include "gc/z/zUtils.hpp"
+#include "gc/z/zValue.hpp"
+#include "runtime/globals.hpp"
+#include "utilities/align.hpp"
+
+//
+// Storage
+//
+
+template <typename T> uintptr_t ZValueStorage<T>::_end = 0;
+template <typename T> uintptr_t ZValueStorage<T>::_top = 0;
+
+template <typename S>
+uintptr_t ZValueStorage<S>::alloc(size_t size) {
+  assert(size <= offset, "Allocation too large");
+
+  // Allocate entry in existing memory block
+  const uintptr_t addr = align_up(_top, S::alignment());
+  _top = addr + size;
+
+  if (_top < _end) {
+    // Success
+    return addr;
+  }
+
+  // Allocate new block of memory
+  const size_t block_alignment = offset;
+  const size_t block_size = offset * S::count();
+  _top = ZUtils::alloc_aligned(block_alignment, block_size);
+  _end = _top + offset;
+
+  // Retry allocation
+  return alloc(size);
+}
+
+inline size_t ZContendedStorage::alignment() {
+  return ZCacheLineSize;
+}
+
+inline uint32_t ZContendedStorage::count() {
+  return 1;
+}
+
+inline uint32_t ZContendedStorage::id() {
+  return 0;
+}
+
+inline size_t ZPerCPUStorage::alignment() {
+  return sizeof(uintptr_t);
+}
+
+inline uint32_t ZPerCPUStorage::count() {
+  return ZCPU::count();
+}
+
+inline uint32_t ZPerCPUStorage::id() {
+  return ZCPU::id();
+}
+
+inline size_t ZPerNUMAStorage::alignment() {
+  return sizeof(uintptr_t);
+}
+
+inline uint32_t ZPerNUMAStorage::count() {
+  return ZNUMA::count();
+}
+
+inline uint32_t ZPerNUMAStorage::id() {
+  return ZNUMA::id();
+}
+
+inline size_t ZPerWorkerStorage::alignment() {
+  return sizeof(uintptr_t);
+}
+
+inline uint32_t ZPerWorkerStorage::count() {
+  return MAX2(ParallelGCThreads, ConcGCThreads);
+}
+
+inline uint32_t ZPerWorkerStorage::id() {
+  return ZThread::worker_id();
+}
+
+//
+// Value
+//
+
+template <typename S, typename T>
+inline uintptr_t ZValue<S, T>::value_addr(uint32_t value_id) const {
+  return _addr + (value_id * S::offset);
+}
+
+template <typename S, typename T>
+inline ZValue<S, T>::ZValue() :
+    _addr(S::alloc(sizeof(T))) {
+  // Initialize all instances
+  ZValueIterator<S, T> iter(this);
+  for (T* addr; iter.next(&addr);) {
+    ::new (addr) T;
+  }
+}
+
+template <typename S, typename T>
+inline ZValue<S, T>::ZValue(const T& value) :
+    _addr(S::alloc(sizeof(T))) {
+  // Initialize all instances
+  ZValueIterator<S, T> iter(this);
+  for (T* addr; iter.next(&addr);) {
+    ::new (addr) T(value);
+  }
+}
+
+template <typename S, typename T>
+inline const T* ZValue<S, T>::addr(uint32_t value_id) const {
+  return reinterpret_cast<const T*>(value_addr(value_id));
+}
+
+template <typename S, typename T>
+inline T* ZValue<S, T>::addr(uint32_t value_id) {
+  return reinterpret_cast<T*>(value_addr(value_id));
+}
+
+template <typename S, typename T>
+inline const T& ZValue<S, T>::get(uint32_t value_id) const {
+  return *addr(value_id);
+}
+
+template <typename S, typename T>
+inline T& ZValue<S, T>::get(uint32_t value_id) {
+  return *addr(value_id);
+}
+
+template <typename S, typename T>
+inline void ZValue<S, T>::set(const T& value, uint32_t value_id) {
+  get(value_id) = value;
+}
+
+template <typename S, typename T>
+inline void ZValue<S, T>::set_all(const T& value) {
+  ZValueIterator<S, T> iter(this);
+  for (T* addr; iter.next(&addr);) {
+    *addr = value;
+  }
+}
+
+template <typename T>
+inline ZContended<T>::ZContended() :
+    ZValue<ZContendedStorage, T>() {}
+
+template <typename T>
+inline ZContended<T>::ZContended(const T& value) :
+    ZValue<ZContendedStorage, T>(value) {}
+
+template <typename T>
+inline ZPerCPU<T>::ZPerCPU() :
+    ZValue<ZPerCPUStorage, T>() {}
+
+template <typename T>
+inline ZPerCPU<T>::ZPerCPU(const T& value) :
+    ZValue<ZPerCPUStorage, T>(value) {}
+
+template <typename T>
+inline ZPerNUMA<T>::ZPerNUMA() :
+    ZValue<ZPerNUMAStorage, T>() {}
+
+template <typename T>
+inline ZPerNUMA<T>::ZPerNUMA(const T& value) :
+    ZValue<ZPerNUMAStorage, T>(value) {}
+
+template <typename T>
+inline ZPerWorker<T>::ZPerWorker() :
+    ZValue<ZPerWorkerStorage, T>() {}
+
+template <typename T>
+inline ZPerWorker<T>::ZPerWorker(const T& value) :
+    ZValue<ZPerWorkerStorage, T>(value) {}
+
+//
+// Iterator
+//
+
+template <typename S, typename T>
+inline ZValueIterator<S, T>::ZValueIterator(ZValue<S, T>* value) :
+    _value(value),
+    _value_id(0) {}
+
+template <typename S, typename T>
+inline bool ZValueIterator<S, T>::next(T** value) {
+  if (_value_id < S::count()) {
+    *value = _value->addr(_value_id++);
+    return true;
+  }
+  return false;
+}
+
+template <typename T>
+inline ZPerCPUIterator<T>::ZPerCPUIterator(ZPerCPU<T>* value) :
+    ZValueIterator<ZPerCPUStorage, T>(value) {}
+
+template <typename T>
+inline ZPerNUMAIterator<T>::ZPerNUMAIterator(ZPerNUMA<T>* value) :
+    ZValueIterator<ZPerNUMAStorage, T>(value) {}
+
+template <typename T>
+inline ZPerWorkerIterator<T>::ZPerWorkerIterator(ZPerWorker<T>* value) :
+    ZValueIterator<ZPerWorkerStorage, T>(value) {}
+
+template <typename S, typename T>
+inline ZValueConstIterator<S, T>::ZValueConstIterator(const ZValue<S, T>* value) :
+    _value(value),
+    _value_id(0) {}
+
+template <typename S, typename T>
+inline bool ZValueConstIterator<S, T>::next(const T** value) {
+  if (_value_id < S::count()) {
+    *value = _value->addr(_value_id++);
+    return true;
+  }
+  return false;
+}
+
+template <typename T>
+inline ZPerCPUConstIterator<T>::ZPerCPUConstIterator(const ZPerCPU<T>* value) :
+    ZValueConstIterator<ZPerCPUStorage, T>(value) {}
+
+template <typename T>
+inline ZPerNUMAConstIterator<T>::ZPerNUMAConstIterator(const ZPerNUMA<T>* value) :
+    ZValueConstIterator<ZPerNUMAStorage, T>(value) {}
+
+template <typename T>
+inline ZPerWorkerConstIterator<T>::ZPerWorkerConstIterator(const ZPerWorker<T>* value) :
+    ZValueConstIterator<ZPerWorkerStorage, T>(value) {}
+
+#endif // SHARE_GC_Z_ZVALUE_INLINE_HPP
--- a/src/hotspot/share/gc/z/zWeakRootsProcessor.hpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/gc/z/zWeakRootsProcessor.hpp	Wed Oct 23 14:01:17 2019 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017, 2018, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2017, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -24,8 +24,6 @@
 #ifndef SHARE_GC_Z_ZWEAKROOTSPROCESSOR_HPP
 #define SHARE_GC_Z_ZWEAKROOTSPROCESSOR_HPP
 
-#include "gc/z/zValue.hpp"
-
 class ZWorkers;
 
 class ZWeakRootsProcessor {
--- a/src/hotspot/share/gc/z/z_globals.hpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/gc/z/z_globals.hpp	Wed Oct 23 14:01:17 2019 -0400
@@ -67,9 +67,6 @@
           "Time between statistics print outs (in seconds)")                \
           range(1, (uint)-1)                                                \
                                                                             \
-  diagnostic(bool, ZStatisticsForceTrace, false,                            \
-          "Force tracing of ZStats")                                        \
-                                                                            \
   diagnostic(bool, ZProactive, true,                                        \
           "Enable proactive GC cycles")                                     \
                                                                             \
--- a/src/hotspot/share/include/jvm.h	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/include/jvm.h	Wed Oct 23 14:01:17 2019 -0400
@@ -192,6 +192,13 @@
 JVM_InitStackTraceElement(JNIEnv* env, jobject element, jobject stackFrameInfo);
 
 /*
+ * java.lang.NullPointerException
+ */
+
+JNIEXPORT jstring JNICALL
+JVM_GetExtendedNPEMessage(JNIEnv *env, jthrowable throwable);
+
+/*
  * java.lang.StackWalker
  */
 enum {
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hotspot/share/interpreter/bytecodeUtils.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -0,0 +1,1481 @@
+/*
+ * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2019 SAP SE. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+#include "precompiled.hpp"
+#include "classfile/systemDictionary.hpp"
+#include "gc/shared/gcLocker.hpp"
+#include "interpreter/bytecodeUtils.hpp"
+#include "memory/resourceArea.hpp"
+#include "runtime/signature.hpp"
+#include "runtime/safepointVerifiers.hpp"
+#include "utilities/events.hpp"
+#include "utilities/ostream.hpp"
+
+class SimulatedOperandStack;
+class ExceptionMessageBuilder;
+
+// The entries of a SimulatedOperandStack. They carry the analysis
+// information gathered for the slot.
+class StackSlotAnalysisData {
+ private:
+
+  friend class SimulatedOperandStack;
+  friend class ExceptionMessageBuilder;
+
+  unsigned int _bci:17;    // The bci of the bytecode that pushed the current value on the operand stack.
+                           // INVALID if ambiguous, e.g. after a control flow merge.
+                           // 16 bits for bci (max bytecode size) and one for INVALID.
+  unsigned int _type:15;   // The BasicType of the value on the operand stack.
+
+  // Merges this slot data with the given one and returns the result. If
+  // the bcis of the two merged objects are different, the bci of the result
+  // will be undefined. If the types are different, the result type is T_CONFLICT.
+  // (An exception is if one type is an array and the other is object, then
+  // the result type will be T_OBJECT).
+  StackSlotAnalysisData merge(StackSlotAnalysisData other);
+
+ public:
+
+  // Creates a new object with an invalid bci and the given type.
+  StackSlotAnalysisData(BasicType type = T_CONFLICT);
+
+  // Creates a new object with the given bci and type.
+  StackSlotAnalysisData(int bci, BasicType type);
+
+  enum {
+    // An invalid bytecode index, as > 65535.
+    INVALID = 0x1FFFF
+  };
+
+  // Returns the bci. If the bci is invalid, INVALID is returned.
+  unsigned int get_bci();
+
+  // Returns true, if the bci is not invalid.
+  bool has_bci() { return get_bci() != INVALID; }
+
+  // Returns the type of the slot data.
+  BasicType get_type();
+};
+
+// A stack consisting of SimulatedOperandStackEntries.
+// This represents the analysis information for the operand stack
+// for a given bytecode at a given bci.
+// It also holds an additional field that serves to collect
+// information whether local slots were written.
+class SimulatedOperandStack: CHeapObj<mtInternal> {
+
+ private:
+
+  friend class ExceptionMessageBuilder;
+  friend class StackSlotAnalysisData;
+
+  // The stack.
+  GrowableArray<StackSlotAnalysisData> _stack;
+
+  // Optimized bytecode can reuse local variable slots for several
+  // local variables.
+  // If there is no variable name information, we print 'parameter<i>'
+  // if a parameter maps to a local slot. Once a local slot has been
+  // written, we don't know any more whether it was written as the
+  // corresponding parameter, or whether another local has been
+  // mapped to the slot. So we don't want to print 'parameter<i>' any
+  // more, but 'local<i>'. Similary for 'this'.
+  // Therefore, during the analysis, we mark a bit for local slots that
+  // get written and propagate this information.
+  // We only run the analysis for 64 slots. If a method has more
+  // parameters, we print 'local<i>' in all cases.
+  uint64_t _written_local_slots;
+
+  SimulatedOperandStack(): _written_local_slots(0) { };
+  SimulatedOperandStack(const SimulatedOperandStack &copy);
+
+  // Pushes the given slot data.
+  void push_raw(StackSlotAnalysisData slotData);
+
+  // Like push_raw, but if the slotData has type long or double, we push two.
+  void push(StackSlotAnalysisData slotData);
+
+  // Like push(slotData), but using bci/type to create an instance of
+  // StackSlotAnalysisData first.
+  void push(int bci, BasicType type);
+
+  // Pops the given number of entries.
+  void pop(int slots);
+
+  // Merges this with the given stack by merging all entries. The
+  // size of the stacks must be the same.
+  void merge(SimulatedOperandStack const& other);
+
+ public:
+
+  // Returns the size of the stack.
+  int get_size() const;
+
+  // Returns the slot data at the given index. Slot 0 is top of stack.
+  StackSlotAnalysisData get_slot_data(int slot);
+
+  // Mark that local slot i was written.
+  void set_local_slot_written(int i);
+
+  // Check whether local slot i was written by this or a previous bytecode.
+  bool local_slot_was_written(int i);
+};
+
+// Helper class to build internal exception messages for exceptions
+// that are thrown because prerequisites to execute a bytecode
+// are not met.
+// E.g., if a NPE is thrown because an iload can not be executed
+// by the VM because the reference to load from is null.
+//
+// It analyses the bytecode to assemble Java-like message text
+// to give precise information where in a larger expression the
+// exception occured.
+//
+// To assemble this message text, it is needed to know how
+// operand stack slot entries were pushed on the operand stack.
+// This class contains an analysis over the bytecodes to compute
+// this information. The information is stored in a
+// SimulatedOperandStack for each bytecode.
+class ExceptionMessageBuilder : public StackObj {
+
+  // The stacks for each bytecode.
+  GrowableArray<SimulatedOperandStack*>* _stacks;
+
+  // The method.
+  Method* _method;
+
+  // The number of entries used (the sum of all entries of all stacks).
+  int _nr_of_entries;
+
+  // If true, we have added at least one new stack.
+  bool _added_one;
+
+  // If true, we have processed all bytecodes.
+  bool _all_processed;
+
+  // The maximum number of entries we want to use. This is used to
+  // limit the amount of memory we waste for insane methods (as they
+  // appear in JCK tests).
+  static const int _max_entries = 1000000;
+
+  static const int _max_cause_detail = 5;
+
+  // Merges the stack the the given bci with the given stack. If there
+  // is no stack at the bci, we just put the given stack there. This
+  // method doesn't takes ownership of the stack.
+  void merge(int bci, SimulatedOperandStack* stack);
+
+  // Processes the instruction at the given bci in the method. Returns
+  // the size of the instruction.
+  int do_instruction(int bci);
+
+  bool print_NPE_cause0(outputStream *os, int bci, int slot, int max_detail,
+                        bool inner_expr = false, const char *prefix = NULL);
+
+ public:
+
+  // Creates an ExceptionMessageBuilder object and runs the analysis
+  // building SimulatedOperandStacks for each bytecode in the given
+  // method (the method must be rewritten already). Note that you're
+  // not allowed to use this object when crossing a safepoint! If the
+  // bci is != -1, we only create the stacks as far as needed to get a
+  // stack for the bci.
+  ExceptionMessageBuilder(Method* method, int bci = -1);
+
+  // Releases the resources.
+  ~ExceptionMessageBuilder();
+
+  // Returns the number of stacks (this is the size of the method).
+  int get_size() { return _stacks->length() - 1; }
+
+  // Assuming that a NullPointerException was thrown at the given bci,
+  // we return the nr of the slot holding the null reference. If this
+  // NPE is created by hand, we return -2 as the slot. If there
+  // cannot be a NullPointerException at the bci, -1 is returned.
+  int get_NPE_null_slot(int bci);
+
+  // Prints a java-like expression for the bytecode that pushed
+  // the value to the given slot being live at the given bci.
+  // It constructs the expression by recursing backwards over the
+  // bytecode using the results of the analysis done in the
+  // constructor of ExceptionMessageBuilder.
+  //  os:   The stream to print the message to.
+  //  bci:  The index of the bytecode that caused the NPE.
+  //  slot: The slot on the operand stack that contains null.
+  //        The slots are numbered from TOS downwards, i.e.,
+  //        TOS has the slot number 0, that below 1 and so on.
+  //
+  // Returns false if nothing was printed, else true.
+  bool print_NPE_cause(outputStream *os, int bci, int slot);
+
+  // Prints a string describing the failed action.
+  void print_NPE_failed_action(outputStream *os, int bci);
+};
+
+// Replaces the following well-known class names:
+//   java.lang.Object -> Object
+//   java.lang.String -> String
+static char *trim_well_known_class_names_from_signature(char *signature) {
+  size_t len = strlen(signature);
+  size_t skip_len = strlen("java.lang.");
+  size_t min_pattern_len = strlen("java.lang.String");
+  if (len < min_pattern_len) return signature;
+
+  for (size_t isrc = 0, idst = 0; isrc <= len; isrc++, idst++) {
+    // We must be careful not to trim names like test.java.lang.String.
+    if ((isrc == 0 && strncmp(signature + isrc, "java.lang.Object", min_pattern_len) == 0) ||
+        (isrc == 0 && strncmp(signature + isrc, "java.lang.String", min_pattern_len) == 0) ||
+        (isrc > 1  && strncmp(signature + isrc-2, ", java.lang.Object", min_pattern_len+2) == 0) ||
+        (isrc > 1  && strncmp(signature + isrc-2, ", java.lang.String", min_pattern_len+2) == 0)   ) {
+      isrc += skip_len;
+    }
+    if (idst != isrc) {
+      signature[idst] = signature[isrc];
+    }
+  }
+  return signature;
+}
+
+// Replaces the following well-known class names:
+//   java.lang.Object -> Object
+//   java.lang.String -> String
+static void print_klass_name(outputStream *os, Symbol *klass) {
+  const char *name = klass->as_klass_external_name();
+  if (strcmp(name, "java.lang.Object") == 0) name = "Object";
+  if (strcmp(name, "java.lang.String") == 0) name = "String";
+  os->print("%s", name);
+}
+
+// Prints the name of the method that is described at constant pool
+// index cp_index in the constant pool of method 'method'.
+static void print_method_name(outputStream *os, Method* method, int cp_index) {
+  ResourceMark rm;
+  ConstantPool* cp  = method->constants();
+  Symbol* klass     = cp->klass_ref_at_noresolve(cp_index);
+  Symbol* name      = cp->name_ref_at(cp_index);
+  Symbol* signature = cp->signature_ref_at(cp_index);
+
+  print_klass_name(os, klass);
+  os->print(".%s(", name->as_C_string());
+  stringStream sig;
+  signature->print_as_signature_external_parameters(&sig);
+  os->print("%s)", trim_well_known_class_names_from_signature(sig.as_string()));
+}
+
+// Prints the name of the field that is described at constant pool
+// index cp_index in the constant pool of method 'method'.
+static void print_field_and_class(outputStream *os, Method* method, int cp_index) {
+  ResourceMark rm;
+  ConstantPool* cp = method->constants();
+  Symbol* klass    = cp->klass_ref_at_noresolve(cp_index);
+  Symbol *name     = cp->name_ref_at(cp_index);
+  print_klass_name(os, klass);
+  os->print(".%s", name->as_C_string());
+}
+
+// Returns the name of the field that is described at constant pool
+// index cp_index in the constant pool of method 'method'.
+static char const* get_field_name(Method* method, int cp_index) {
+  Symbol* name = method->constants()->name_ref_at(cp_index);
+  return name->as_C_string();
+}
+
+static void print_local_var(outputStream *os, unsigned int bci, Method* method, int slot, bool is_parameter) {
+  if (method->has_localvariable_table()) {
+    for (int i = 0; i < method->localvariable_table_length(); i++) {
+      LocalVariableTableElement* elem = method->localvariable_table_start() + i;
+      unsigned int start = elem->start_bci;
+      unsigned int end = start + elem->length;
+
+      if ((bci >= start) && (bci < end) && (elem->slot == slot)) {
+        ConstantPool* cp = method->constants();
+        char *var =  cp->symbol_at(elem->name_cp_index)->as_C_string();
+        os->print("%s", var);
+
+        return;
+      }
+    }
+  }
+
+  // Handle at least some cases we know.
+  if (!method->is_static() && (slot == 0) && is_parameter) {
+    os->print("this");
+  } else {
+    int curr = method->is_static() ? 0 : 1;
+    SignatureStream ss(method->signature());
+    int param_index = 1;
+    bool found = false;
+
+    for (SignatureStream ss(method->signature()); !ss.is_done(); ss.next()) {
+      if (ss.at_return_type()) {
+        continue;
+      }
+      int size = type2size[ss.type()];
+      if ((slot >= curr) && (slot < curr + size)) {
+        found = true;
+        break;
+      }
+      param_index += 1;
+      curr += size;
+    }
+
+    if (found && is_parameter) {
+      os->print("<parameter%d>", param_index);
+    } else {
+      // This is the best we can do.
+      os->print("<local%d>", slot);
+    }
+  }
+}
+
+StackSlotAnalysisData::StackSlotAnalysisData(BasicType type) : _bci(INVALID), _type(type) {}
+
+StackSlotAnalysisData::StackSlotAnalysisData(int bci, BasicType type) : _bci(bci), _type(type) {
+  assert(bci >= 0, "BCI must be >= 0");
+  assert(bci < 65536, "BCI must be < 65536");
+}
+
+unsigned int StackSlotAnalysisData::get_bci() {
+  return _bci;
+}
+
+BasicType StackSlotAnalysisData::get_type() {
+  return (BasicType)_type;
+}
+
+StackSlotAnalysisData StackSlotAnalysisData::merge(StackSlotAnalysisData other) {
+  if (get_type() != other.get_type()) {
+    if (((get_type() == T_OBJECT) || (get_type() == T_ARRAY)) &&
+        ((other.get_type() == T_OBJECT) || (other.get_type() == T_ARRAY))) {
+      if (get_bci() == other.get_bci()) {
+        return StackSlotAnalysisData(get_bci(), T_OBJECT);
+      } else {
+        return StackSlotAnalysisData(T_OBJECT);
+      }
+    } else {
+      return StackSlotAnalysisData(T_CONFLICT);
+    }
+  }
+
+  if (get_bci() == other.get_bci()) {
+    return *this;
+  } else {
+    return StackSlotAnalysisData(get_type());
+  }
+}
+
+SimulatedOperandStack::SimulatedOperandStack(const SimulatedOperandStack &copy) {
+  for (int i = 0; i < copy.get_size(); i++) {
+    push_raw(copy._stack.at(i));
+  }
+  _written_local_slots = copy._written_local_slots;
+}
+
+void SimulatedOperandStack::push_raw(StackSlotAnalysisData slotData) {
+  if (slotData.get_type() == T_VOID) {
+    return;
+  }
+
+  _stack.push(slotData);
+}
+
+void SimulatedOperandStack::push(StackSlotAnalysisData slotData) {
+  if (type2size[slotData.get_type()] == 2) {
+    push_raw(slotData);
+    push_raw(slotData);
+  } else {
+    push_raw(slotData);
+  }
+}
+
+void SimulatedOperandStack::push(int bci, BasicType type) {
+  push(StackSlotAnalysisData(bci, type));
+}
+
+void SimulatedOperandStack::pop(int slots) {
+  for (int i = 0; i < slots; ++i) {
+    _stack.pop();
+  }
+
+  assert(get_size() >= 0, "Popped too many slots");
+}
+
+void SimulatedOperandStack::merge(SimulatedOperandStack const& other) {
+  assert(get_size() == other.get_size(), "Stacks not of same size");
+
+  for (int i = get_size() - 1; i >= 0; --i) {
+    _stack.at_put(i, _stack.at(i).merge(other._stack.at(i)));
+  }
+  _written_local_slots = _written_local_slots | other._written_local_slots;
+}
+
+int SimulatedOperandStack::get_size() const {
+  return _stack.length();
+}
+
+StackSlotAnalysisData SimulatedOperandStack::get_slot_data(int slot) {
+  assert(slot >= 0, "Slot=%d < 0", slot);
+  assert(slot < get_size(), "Slot=%d >= size=%d", slot, get_size());
+
+  return _stack.at(get_size() - slot - 1);
+}
+
+void SimulatedOperandStack::set_local_slot_written(int i) {
+  // Local slots > 63 are very unlikely. Consider these
+  // as written all the time. Saves space and complexity
+  // for dynamic data size.
+  if (i > 63) return;
+  _written_local_slots = _written_local_slots | (1ULL << i);
+}
+
+bool SimulatedOperandStack::local_slot_was_written(int i) {
+  if (i > 63) return true;
+  return (_written_local_slots & (1ULL << i)) != 0;
+}
+
+ExceptionMessageBuilder::ExceptionMessageBuilder(Method* method, int bci) :
+                    _method(method), _nr_of_entries(0),
+                    _added_one(true), _all_processed(false) {
+
+  ConstMethod* const_method = method->constMethod();
+  const int len = const_method->code_size();
+
+  assert(bci >= 0, "BCI too low: %d", bci);
+  assert(bci < len, "BCI too large: %d size: %d", bci, len);
+
+  _stacks = new GrowableArray<SimulatedOperandStack*> (len + 1);
+
+  for (int i = 0; i <= len; ++i) {
+    _stacks->push(NULL);
+  }
+
+  // Initialize stack a bci 0.
+  _stacks->at_put(0, new SimulatedOperandStack());
+
+  // And initialize the start of all exception handlers.
+  if (const_method->has_exception_handler()) {
+    ExceptionTableElement *et = const_method->exception_table_start();
+    for (int i = 0; i < const_method->exception_table_length(); ++i) {
+      u2 index = et[i].handler_pc;
+
+      if (_stacks->at(index) == NULL) {
+        _stacks->at_put(index, new SimulatedOperandStack());
+        _stacks->at(index)->push(index, T_OBJECT);
+      }
+    }
+  }
+
+  // Do this until each bytecode has a stack or we haven't
+  // added a new stack in one iteration.
+  while (!_all_processed && _added_one) {
+    _all_processed = true;
+    _added_one = false;
+
+    for (int i = 0; i < len; ) {
+      // Analyse bytecode i. Step by size of the analyzed bytecode to next bytecode.
+      i += do_instruction(i);
+
+      // If we want the data only for a certain bci, we can possibly end early.
+      if ((bci == i) && (_stacks->at(i) != NULL)) {
+        _all_processed = true;
+        break;
+      }
+
+      if (_nr_of_entries > _max_entries) {
+        return;
+      }
+    }
+  }
+}
+
+ExceptionMessageBuilder::~ExceptionMessageBuilder() {
+  if (_stacks != NULL) {
+    for (int i = 0; i < _stacks->length(); ++i) {
+      delete _stacks->at(i);
+    }
+  }
+}
+
+void ExceptionMessageBuilder::merge(int bci, SimulatedOperandStack* stack) {
+  assert(stack != _stacks->at(bci), "Cannot merge itself");
+
+  if (_stacks->at(bci) != NULL) {
+    stack->merge(*_stacks->at(bci));
+  } else {
+    // Got a new stack, so count the entries.
+    _nr_of_entries += stack->get_size();
+  }
+
+  // Replace the stack at this bci with a copy of our new merged stack.
+  delete _stacks->at(bci);
+  _stacks->at_put(bci, new SimulatedOperandStack(*stack));
+}
+
+int ExceptionMessageBuilder::do_instruction(int bci) {
+  ConstMethod* const_method = _method->constMethod();
+  address code_base = _method->constMethod()->code_base();
+
+  // We use the java code, since we don't want to cope with all the fast variants.
+  int len = Bytecodes::java_length_at(_method, code_base + bci);
+
+  // If we have no stack for this bci, we cannot process the bytecode now.
+  if (_stacks->at(bci) == NULL) {
+    _all_processed = false;
+    return len;
+  }
+
+  // Make a local copy of the stack for this bci to work on.
+  SimulatedOperandStack* stack = new SimulatedOperandStack(*_stacks->at(bci));
+
+  // dest_bci is != -1 if we branch.
+  int dest_bci = -1;
+
+  // This is for table and lookup switch.
+  static const int initial_length = 2;
+  GrowableArray<int> dests(initial_length);
+
+  bool flow_ended = false;
+
+  // Get the bytecode.
+  bool is_wide = false;
+  Bytecodes::Code raw_code = Bytecodes::code_at(_method, code_base + bci);
+  Bytecodes::Code code = Bytecodes::java_code_at(_method, code_base + bci);
+  int pos = bci + 1;
+
+  if (code == Bytecodes::_wide) {
+    is_wide = true;
+    code = Bytecodes::java_code_at(_method, code_base + bci + 1);
+    pos += 1;
+  }
+
+  // Now simulate the action of each bytecode.
+  switch (code) {
+    case Bytecodes::_nop:
+    case Bytecodes::_aconst_null:
+    case Bytecodes::_iconst_m1:
+    case Bytecodes::_iconst_0:
+    case Bytecodes::_iconst_1:
+    case Bytecodes::_iconst_2:
+    case Bytecodes::_iconst_3:
+    case Bytecodes::_iconst_4:
+    case Bytecodes::_iconst_5:
+    case Bytecodes::_lconst_0:
+    case Bytecodes::_lconst_1:
+    case Bytecodes::_fconst_0:
+    case Bytecodes::_fconst_1:
+    case Bytecodes::_fconst_2:
+    case Bytecodes::_dconst_0:
+    case Bytecodes::_dconst_1:
+    case Bytecodes::_bipush:
+    case Bytecodes::_sipush:
+    case Bytecodes::_iload:
+    case Bytecodes::_lload:
+    case Bytecodes::_fload:
+    case Bytecodes::_dload:
+    case Bytecodes::_aload:
+    case Bytecodes::_iload_0:
+    case Bytecodes::_iload_1:
+    case Bytecodes::_iload_2:
+    case Bytecodes::_iload_3:
+    case Bytecodes::_lload_0:
+    case Bytecodes::_lload_1:
+    case Bytecodes::_lload_2:
+    case Bytecodes::_lload_3:
+    case Bytecodes::_fload_0:
+    case Bytecodes::_fload_1:
+    case Bytecodes::_fload_2:
+    case Bytecodes::_fload_3:
+    case Bytecodes::_dload_0:
+    case Bytecodes::_dload_1:
+    case Bytecodes::_dload_2:
+    case Bytecodes::_dload_3:
+    case Bytecodes::_aload_0:
+    case Bytecodes::_aload_1:
+    case Bytecodes::_aload_2:
+    case Bytecodes::_aload_3:
+    case Bytecodes::_iinc:
+    case Bytecodes::_new:
+      stack->push(bci, Bytecodes::result_type(code));
+      break;
+
+    case Bytecodes::_ldc:
+    case Bytecodes::_ldc_w:
+    case Bytecodes::_ldc2_w: {
+      int cp_index;
+      ConstantPool* cp = _method->constants();
+
+      if (code == Bytecodes::_ldc) {
+        cp_index = *(uint8_t*) (code_base + pos);
+
+        if (raw_code == Bytecodes::_fast_aldc) {
+          cp_index = cp->object_to_cp_index(cp_index);
+        }
+      } else {
+        if (raw_code == Bytecodes::_fast_aldc_w) {
+          cp_index = Bytes::get_native_u2(code_base + pos);
+          cp_index = cp->object_to_cp_index(cp_index);
+        }
+        else {
+          cp_index = Bytes::get_Java_u2(code_base + pos);
+        }
+      }
+
+      constantTag tag = cp->tag_at(cp_index);
+      if (tag.is_klass()  || tag.is_unresolved_klass() ||
+          tag.is_method() || tag.is_interface_method() ||
+          tag.is_field()  || tag.is_string()) {
+        stack->push(bci, T_OBJECT);
+      } else if (tag.is_int()) {
+        stack->push(bci, T_INT);
+      } else if (tag.is_long()) {
+        stack->push(bci, T_LONG);
+      } else if (tag.is_float()) {
+        stack->push(bci, T_FLOAT);
+      } else if (tag.is_double()) {
+        stack->push(bci, T_DOUBLE);
+      } else {
+        assert(false, "Unexpected tag");
+      }
+      break;
+    }
+
+    case Bytecodes::_iaload:
+    case Bytecodes::_faload:
+    case Bytecodes::_aaload:
+    case Bytecodes::_baload:
+    case Bytecodes::_caload:
+    case Bytecodes::_saload:
+    case Bytecodes::_laload:
+    case Bytecodes::_daload:
+      stack->pop(2);
+      stack->push(bci, Bytecodes::result_type(code));
+      break;
+
+    case Bytecodes::_istore:
+    case Bytecodes::_lstore:
+    case Bytecodes::_fstore:
+    case Bytecodes::_dstore:
+    case Bytecodes::_astore:
+      int index;
+      if (is_wide) {
+        index = Bytes::get_Java_u2(code_base + bci + 2);
+      } else {
+        index = *(uint8_t*) (code_base + bci + 1);
+      }
+      stack->set_local_slot_written(index);
+      stack->pop(-Bytecodes::depth(code));
+      break;
+    case Bytecodes::_istore_0:
+    case Bytecodes::_lstore_0:
+    case Bytecodes::_fstore_0:
+    case Bytecodes::_dstore_0:
+    case Bytecodes::_astore_0:
+      stack->set_local_slot_written(0);
+      stack->pop(-Bytecodes::depth(code));
+      break;
+    case Bytecodes::_istore_1:
+    case Bytecodes::_fstore_1:
+    case Bytecodes::_lstore_1:
+    case Bytecodes::_dstore_1:
+    case Bytecodes::_astore_1:
+      stack->set_local_slot_written(1);
+      stack->pop(-Bytecodes::depth(code));
+      break;
+    case Bytecodes::_istore_2:
+    case Bytecodes::_lstore_2:
+    case Bytecodes::_fstore_2:
+    case Bytecodes::_dstore_2:
+    case Bytecodes::_astore_2:
+      stack->set_local_slot_written(2);
+      stack->pop(-Bytecodes::depth(code));
+      break;
+    case Bytecodes::_istore_3:
+    case Bytecodes::_lstore_3:
+    case Bytecodes::_fstore_3:
+    case Bytecodes::_dstore_3:
+    case Bytecodes::_astore_3:
+      stack->set_local_slot_written(3);
+      stack->pop(-Bytecodes::depth(code));
+      break;
+    case Bytecodes::_iastore:
+    case Bytecodes::_lastore:
+    case Bytecodes::_fastore:
+    case Bytecodes::_dastore:
+    case Bytecodes::_aastore:
+    case Bytecodes::_bastore:
+    case Bytecodes::_castore:
+    case Bytecodes::_sastore:
+    case Bytecodes::_pop:
+    case Bytecodes::_pop2:
+    case Bytecodes::_monitorenter:
+    case Bytecodes::_monitorexit:
+    case Bytecodes::_breakpoint:
+      stack->pop(-Bytecodes::depth(code));
+      break;
+
+    case Bytecodes::_dup:
+      stack->push_raw(stack->get_slot_data(0));
+      break;
+
+    case Bytecodes::_dup_x1: {
+      StackSlotAnalysisData top1 = stack->get_slot_data(0);
+      StackSlotAnalysisData top2 = stack->get_slot_data(1);
+      stack->pop(2);
+      stack->push_raw(top1);
+      stack->push_raw(top2);
+      stack->push_raw(top1);
+      break;
+    }
+
+    case Bytecodes::_dup_x2: {
+      StackSlotAnalysisData top1 = stack->get_slot_data(0);
+      StackSlotAnalysisData top2 = stack->get_slot_data(1);
+      StackSlotAnalysisData top3 = stack->get_slot_data(2);
+      stack->pop(3);
+      stack->push_raw(top1);
+      stack->push_raw(top3);
+      stack->push_raw(top2);
+      stack->push_raw(top1);
+      break;
+    }
+
+    case Bytecodes::_dup2:
+      stack->push_raw(stack->get_slot_data(1));
+      // The former '0' entry is now at '1'.
+      stack->push_raw(stack->get_slot_data(1));
+      break;
+
+    case Bytecodes::_dup2_x1: {
+      StackSlotAnalysisData top1 = stack->get_slot_data(0);
+      StackSlotAnalysisData top2 = stack->get_slot_data(1);
+      StackSlotAnalysisData top3 = stack->get_slot_data(2);
+      stack->pop(3);
+      stack->push_raw(top2);
+      stack->push_raw(top1);
+      stack->push_raw(top3);
+      stack->push_raw(top2);
+      stack->push_raw(top1);
+      break;
+    }
+
+    case Bytecodes::_dup2_x2: {
+      StackSlotAnalysisData top1 = stack->get_slot_data(0);
+      StackSlotAnalysisData top2 = stack->get_slot_data(1);
+      StackSlotAnalysisData top3 = stack->get_slot_data(2);
+      StackSlotAnalysisData top4 = stack->get_slot_data(3);
+      stack->pop(4);
+      stack->push_raw(top2);
+      stack->push_raw(top1);
+      stack->push_raw(top4);
+      stack->push_raw(top3);
+      stack->push_raw(top2);
+      stack->push_raw(top1);
+      break;
+    }
+
+    case Bytecodes::_swap: {
+      StackSlotAnalysisData top1 = stack->get_slot_data(0);
+      StackSlotAnalysisData top2 = stack->get_slot_data(1);
+      stack->pop(2);
+      stack->push(top1);
+      stack->push(top2);
+      break;
+    }
+
+    case Bytecodes::_iadd:
+    case Bytecodes::_ladd:
+    case Bytecodes::_fadd:
+    case Bytecodes::_dadd:
+    case Bytecodes::_isub:
+    case Bytecodes::_lsub:
+    case Bytecodes::_fsub:
+    case Bytecodes::_dsub:
+    case Bytecodes::_imul:
+    case Bytecodes::_lmul:
+    case Bytecodes::_fmul:
+    case Bytecodes::_dmul:
+    case Bytecodes::_idiv:
+    case Bytecodes::_ldiv:
+    case Bytecodes::_fdiv:
+    case Bytecodes::_ddiv:
+    case Bytecodes::_irem:
+    case Bytecodes::_lrem:
+    case Bytecodes::_frem:
+    case Bytecodes::_drem:
+    case Bytecodes::_iand:
+    case Bytecodes::_land:
+    case Bytecodes::_ior:
+    case Bytecodes::_lor:
+    case Bytecodes::_ixor:
+    case Bytecodes::_lxor:
+      stack->pop(2 * type2size[Bytecodes::result_type(code)]);
+      stack->push(bci, Bytecodes::result_type(code));
+      break;
+
+    case Bytecodes::_ineg:
+    case Bytecodes::_lneg:
+    case Bytecodes::_fneg:
+    case Bytecodes::_dneg:
+      stack->pop(type2size[Bytecodes::result_type(code)]);
+      stack->push(bci, Bytecodes::result_type(code));
+      break;
+
+    case Bytecodes::_ishl:
+    case Bytecodes::_lshl:
+    case Bytecodes::_ishr:
+    case Bytecodes::_lshr:
+    case Bytecodes::_iushr:
+    case Bytecodes::_lushr:
+      stack->pop(1 + type2size[Bytecodes::result_type(code)]);
+      stack->push(bci, Bytecodes::result_type(code));
+      break;
+
+    case Bytecodes::_i2l:
+    case Bytecodes::_i2f:
+    case Bytecodes::_i2d:
+    case Bytecodes::_f2i:
+    case Bytecodes::_f2l:
+    case Bytecodes::_f2d:
+    case Bytecodes::_i2b:
+    case Bytecodes::_i2c:
+    case Bytecodes::_i2s:
+      stack->pop(1);
+      stack->push(bci, Bytecodes::result_type(code));
+      break;
+
+    case Bytecodes::_l2i:
+    case Bytecodes::_l2f:
+    case Bytecodes::_l2d:
+    case Bytecodes::_d2i:
+    case Bytecodes::_d2l:
+    case Bytecodes::_d2f:
+      stack->pop(2);
+      stack->push(bci, Bytecodes::result_type(code));
+      break;
+
+    case Bytecodes::_lcmp:
+    case Bytecodes::_fcmpl:
+    case Bytecodes::_fcmpg:
+    case Bytecodes::_dcmpl:
+    case Bytecodes::_dcmpg:
+      stack->pop(1 - Bytecodes::depth(code));
+      stack->push(bci, T_INT);
+      break;
+
+    case Bytecodes::_ifeq:
+    case Bytecodes::_ifne:
+    case Bytecodes::_iflt:
+    case Bytecodes::_ifge:
+    case Bytecodes::_ifgt:
+    case Bytecodes::_ifle:
+    case Bytecodes::_if_icmpeq:
+    case Bytecodes::_if_icmpne:
+    case Bytecodes::_if_icmplt:
+    case Bytecodes::_if_icmpge:
+    case Bytecodes::_if_icmpgt:
+    case Bytecodes::_if_icmple:
+    case Bytecodes::_if_acmpeq:
+    case Bytecodes::_if_acmpne:
+    case Bytecodes::_ifnull:
+    case Bytecodes::_ifnonnull:
+      stack->pop(-Bytecodes::depth(code));
+      dest_bci = bci + (int16_t) Bytes::get_Java_u2(code_base + pos);
+      break;
+
+    case Bytecodes::_jsr:
+      // NOTE: Bytecodes has wrong depth for jsr.
+      stack->push(bci, T_ADDRESS);
+      dest_bci = bci + (int16_t) Bytes::get_Java_u2(code_base + pos);
+      flow_ended = true;
+      break;
+
+    case Bytecodes::_jsr_w: {
+      // NOTE: Bytecodes has wrong depth for jsr.
+      stack->push(bci, T_ADDRESS);
+      dest_bci = bci + (int32_t) Bytes::get_Java_u4(code_base + pos);
+      flow_ended = true;
+      break;
+    }
+
+    case Bytecodes::_ret:
+      // We don't track local variables, so we cannot know were we
+      // return. This makes the stacks imprecise, but we have to
+      // live with that.
+      flow_ended = true;
+      break;
+
+    case Bytecodes::_tableswitch: {
+      stack->pop(1);
+      pos = (pos + 3) & ~3;
+      dest_bci = bci + (int32_t) Bytes::get_Java_u4(code_base + pos);
+      int low = (int32_t) Bytes::get_Java_u4(code_base + pos + 4);
+      int high = (int32_t) Bytes::get_Java_u4(code_base + pos + 8);
+
+      for (int64_t i = low; i <= high; ++i) {
+        dests.push(bci + (int32_t) Bytes::get_Java_u4(code_base + pos + 12 + 4 * (i - low)));
+      }
+
+      break;
+    }
+
+    case Bytecodes::_lookupswitch: {
+      stack->pop(1);
+      pos = (pos + 3) & ~3;
+      dest_bci = bci + (int32_t) Bytes::get_Java_u4(code_base + pos);
+      int nr_of_dests = (int32_t) Bytes::get_Java_u4(code_base + pos + 4);
+
+      for (int i = 0; i < nr_of_dests; ++i) {
+        dests.push(bci + (int32_t) Bytes::get_Java_u4(code_base + pos + 12 + 8 * i));
+      }
+
+      break;
+    }
+
+    case Bytecodes::_ireturn:
+    case Bytecodes::_lreturn:
+    case Bytecodes::_freturn:
+    case Bytecodes::_dreturn:
+    case Bytecodes::_areturn:
+    case Bytecodes::_return:
+    case Bytecodes::_athrow:
+      stack->pop(-Bytecodes::depth(code));
+      flow_ended = true;
+      break;
+
+    case Bytecodes::_getstatic:
+    case Bytecodes::_getfield: {
+      // Find out the type of the field accessed.
+      int cp_index = Bytes::get_native_u2(code_base + pos) DEBUG_ONLY(+ ConstantPool::CPCACHE_INDEX_TAG);
+      ConstantPool* cp = _method->constants();
+      int name_and_type_index = cp->name_and_type_ref_index_at(cp_index);
+      int type_index = cp->signature_ref_index_at(name_and_type_index);
+      Symbol* signature = cp->symbol_at(type_index);
+      // Simulate the bytecode: pop the address, push the 'value' loaded
+      // from the field.
+      stack->pop(1 - Bytecodes::depth(code));
+      stack->push(bci, char2type((char) signature->char_at(0)));
+      break;
+    }
+
+    case Bytecodes::_putstatic:
+    case Bytecodes::_putfield: {
+      int cp_index = Bytes::get_native_u2(code_base + pos) DEBUG_ONLY(+ ConstantPool::CPCACHE_INDEX_TAG);
+      ConstantPool* cp = _method->constants();
+      int name_and_type_index = cp->name_and_type_ref_index_at(cp_index);
+      int type_index = cp->signature_ref_index_at(name_and_type_index);
+      Symbol* signature = cp->symbol_at(type_index);
+      ResultTypeFinder result_type(signature);
+      stack->pop(type2size[char2type((char) signature->char_at(0))] - Bytecodes::depth(code) - 1);
+      break;
+    }
+
+    case Bytecodes::_invokevirtual:
+    case Bytecodes::_invokespecial:
+    case Bytecodes::_invokestatic:
+    case Bytecodes::_invokeinterface:
+    case Bytecodes::_invokedynamic: {
+      ConstantPool* cp = _method->constants();
+      int cp_index;
+
+      if (code == Bytecodes::_invokedynamic) {
+        cp_index = ((int) Bytes::get_native_u4(code_base + pos));
+      } else {
+        cp_index = Bytes::get_native_u2(code_base + pos) DEBUG_ONLY(+ ConstantPool::CPCACHE_INDEX_TAG);
+      }
+
+      int name_and_type_index = cp->name_and_type_ref_index_at(cp_index);
+      int type_index = cp->signature_ref_index_at(name_and_type_index);
+      Symbol* signature = cp->symbol_at(type_index);
+
+      if ((code != Bytecodes::_invokestatic) && (code != Bytecodes::_invokedynamic)) {
+        // Pop receiver.
+        stack->pop(1);
+      }
+
+      stack->pop(ArgumentSizeComputer(signature).size());
+      ResultTypeFinder result_type(signature);
+      stack->push(bci, result_type.type());
+      break;
+    }
+
+    case Bytecodes::_newarray:
+    case Bytecodes::_anewarray:
+    case Bytecodes::_instanceof:
+      stack->pop(1);
+      stack->push(bci, Bytecodes::result_type(code));
+      break;
+
+    case Bytecodes::_arraylength:
+      // The return type of arraylength is wrong in the bytecodes table (T_VOID).
+      stack->pop(1);
+      stack->push(bci, T_INT);
+      break;
+
+    case Bytecodes::_checkcast:
+      break;
+
+    case Bytecodes::_multianewarray:
+      stack->pop(*(uint8_t*) (code_base + pos + 2));
+      stack->push(bci, T_OBJECT);
+      break;
+
+   case Bytecodes::_goto:
+      stack->pop(-Bytecodes::depth(code));
+      dest_bci = bci + (int16_t) Bytes::get_Java_u2(code_base + pos);
+      flow_ended = true;
+      break;
+
+
+   case Bytecodes::_goto_w:
+      stack->pop(-Bytecodes::depth(code));
+      dest_bci = bci + (int32_t) Bytes::get_Java_u4(code_base + pos);
+      flow_ended = true;
+      break;
+
+    default:
+      // Allow at least the bcis which have stack info to work.
+      _all_processed = false;
+      _added_one = false;
+      delete stack;
+
+      return len;
+  }
+
+  // Put new stack to the next instruction, if we might reach it from
+  // this bci.
+  if (!flow_ended) {
+    if (_stacks->at(bci + len) == NULL) {
+      _added_one = true;
+    }
+    merge(bci + len, stack);
+  }
+
+  // Put the stack to the branch target too.
+  if (dest_bci != -1) {
+    if (_stacks->at(dest_bci) == NULL) {
+      _added_one = true;
+    }
+    merge(dest_bci, stack);
+  }
+
+  // If we have more than one branch target, process these too.
+  for (int64_t i = 0; i < dests.length(); ++i) {
+    if (_stacks->at(dests.at(i)) == NULL) {
+      _added_one = true;
+    }
+    merge(dests.at(i), stack);
+  }
+
+  delete stack;
+
+  return len;
+}
+
+#define INVALID_BYTECODE_ENCOUNTERED -1
+#define NPE_EXPLICIT_CONSTRUCTED -2
+int ExceptionMessageBuilder::get_NPE_null_slot(int bci) {
+  // Get the bytecode.
+  address code_base = _method->constMethod()->code_base();
+  Bytecodes::Code code = Bytecodes::java_code_at(_method, code_base + bci);
+  int pos = bci + 1;  // Position of argument of the bytecode.
+  if (code == Bytecodes::_wide) {
+    code = Bytecodes::java_code_at(_method, code_base + bci + 1);
+    pos += 1;
+  }
+
+  switch (code) {
+    case Bytecodes::_getfield:
+    case Bytecodes::_arraylength:
+    case Bytecodes::_athrow:
+    case Bytecodes::_monitorenter:
+    case Bytecodes::_monitorexit:
+      return 0;
+    case Bytecodes::_iaload:
+    case Bytecodes::_faload:
+    case Bytecodes::_aaload:
+    case Bytecodes::_baload:
+    case Bytecodes::_caload:
+    case Bytecodes::_saload:
+    case Bytecodes::_laload:
+    case Bytecodes::_daload:
+      return 1;
+    case Bytecodes::_iastore:
+    case Bytecodes::_fastore:
+    case Bytecodes::_aastore:
+    case Bytecodes::_bastore:
+    case Bytecodes::_castore:
+    case Bytecodes::_sastore:
+      return 2;
+    case Bytecodes::_lastore:
+    case Bytecodes::_dastore:
+      return 3;
+    case Bytecodes::_putfield: {
+        int cp_index = Bytes::get_native_u2(code_base + pos) DEBUG_ONLY(+ ConstantPool::CPCACHE_INDEX_TAG);
+        ConstantPool* cp = _method->constants();
+        int name_and_type_index = cp->name_and_type_ref_index_at(cp_index);
+        int type_index = cp->signature_ref_index_at(name_and_type_index);
+        Symbol* signature = cp->symbol_at(type_index);
+        return type2size[char2type((char) signature->char_at(0))];
+      }
+    case Bytecodes::_invokevirtual:
+    case Bytecodes::_invokespecial:
+    case Bytecodes::_invokeinterface: {
+        int cp_index = Bytes::get_native_u2(code_base+ pos) DEBUG_ONLY(+ ConstantPool::CPCACHE_INDEX_TAG);
+        ConstantPool* cp = _method->constants();
+        int name_and_type_index = cp->name_and_type_ref_index_at(cp_index);
+        int name_index = cp->name_ref_index_at(name_and_type_index);
+        Symbol* name = cp->symbol_at(name_index);
+
+        // Assume the the call of a constructor can never cause a NullPointerException
+        // (which is true in Java). This is mainly used to avoid generating wrong
+        // messages for NullPointerExceptions created explicitly by new in Java code.
+        if (name != vmSymbols::object_initializer_name()) {
+          int     type_index = cp->signature_ref_index_at(name_and_type_index);
+          Symbol* signature  = cp->symbol_at(type_index);
+          // The 'this' parameter was null. Return the slot of it.
+          return ArgumentSizeComputer(signature).size();
+        } else {
+          return NPE_EXPLICIT_CONSTRUCTED;
+        }
+      }
+
+    default:
+      break;
+  }
+
+  return INVALID_BYTECODE_ENCOUNTERED;
+}
+
+bool ExceptionMessageBuilder::print_NPE_cause(outputStream* os, int bci, int slot) {
+  if (print_NPE_cause0(os, bci, slot, _max_cause_detail, false, " because \"")) {
+    os->print("\" is null");
+    return true;
+  }
+  return false;
+}
+
+// Recursively print what was null.
+//
+// Go to the bytecode that pushed slot 'slot' on the operand stack
+// at bytecode 'bci'. Compute a message for that bytecode. If
+// necessary (array, field), recur further.
+// At most do max_detail recursions.
+// Prefix is used to print a proper beginning of the whole
+// sentence.
+// inner_expr is used to omit some text, like 'static' in
+// inner expressions like array subscripts.
+//
+// Returns true if something was printed.
+//
+bool ExceptionMessageBuilder::print_NPE_cause0(outputStream* os, int bci, int slot,
+                                               int max_detail,
+                                               bool inner_expr, const char *prefix) {
+  assert(bci >= 0, "BCI too low");
+  assert(bci < get_size(), "BCI too large");
+
+  if (max_detail <= 0) {
+    return false;
+  }
+
+  if (_stacks->at(bci) == NULL) {
+    return false;
+  }
+
+  SimulatedOperandStack* stack = _stacks->at(bci);
+  assert(slot >= 0, "Slot nr. too low");
+  assert(slot < stack->get_size(), "Slot nr. too large");
+
+  StackSlotAnalysisData slotData = stack->get_slot_data(slot);
+
+  if (!slotData.has_bci()) {
+    return false;
+  }
+
+  // Get the bytecode.
+  unsigned int source_bci = slotData.get_bci();
+  address code_base = _method->constMethod()->code_base();
+  Bytecodes::Code code = Bytecodes::java_code_at(_method, code_base + source_bci);
+  bool is_wide = false;
+  int pos = source_bci + 1;
+
+  if (code == Bytecodes::_wide) {
+    is_wide = true;
+    code = Bytecodes::java_code_at(_method, code_base + source_bci + 1);
+    pos += 1;
+  }
+
+  if (max_detail == _max_cause_detail &&
+      prefix != NULL &&
+      code != Bytecodes::_invokevirtual &&
+      code != Bytecodes::_invokespecial &&
+      code != Bytecodes::_invokestatic &&
+      code != Bytecodes::_invokeinterface) {
+    os->print("%s", prefix);
+  }
+
+  switch (code) {
+    case Bytecodes::_iload_0:
+    case Bytecodes::_aload_0:
+      print_local_var(os, source_bci, _method, 0, !stack->local_slot_was_written(0));
+      return true;
+
+    case Bytecodes::_iload_1:
+    case Bytecodes::_aload_1:
+      print_local_var(os, source_bci, _method, 1, !stack->local_slot_was_written(1));
+      return true;
+
+    case Bytecodes::_iload_2:
+    case Bytecodes::_aload_2:
+      print_local_var(os, source_bci, _method, 2, !stack->local_slot_was_written(2));
+      return true;
+
+    case Bytecodes::_iload_3:
+    case Bytecodes::_aload_3:
+      print_local_var(os, source_bci, _method, 3, !stack->local_slot_was_written(3));
+      return true;
+
+    case Bytecodes::_iload:
+    case Bytecodes::_aload: {
+      int index;
+      if (is_wide) {
+        index = Bytes::get_Java_u2(code_base + source_bci + 2);
+      } else {
+        index = *(uint8_t*) (code_base + source_bci + 1);
+      }
+      print_local_var(os, source_bci, _method, index, !stack->local_slot_was_written(index));
+      return true;
+    }
+
+    case Bytecodes::_aconst_null:
+      os->print("null");
+      return true;
+    case Bytecodes::_iconst_m1:
+      os->print("-1");
+      return true;
+    case Bytecodes::_iconst_0:
+      os->print("0");
+      return true;
+    case Bytecodes::_iconst_1:
+      os->print("1");
+      return true;
+    case Bytecodes::_iconst_2:
+      os->print("2");
+      return true;
+    case Bytecodes::_iconst_3:
+      os->print("3");
+      return true;
+    case Bytecodes::_iconst_4:
+      os->print("4");
+      return true;
+    case Bytecodes::_iconst_5:
+      os->print("5");
+      return true;
+    case Bytecodes::_bipush: {
+      jbyte con = *(jbyte*) (code_base + source_bci + 1);
+      os->print("%d", con);
+      return true;
+    }
+    case Bytecodes::_sipush: {
+      u2 con = Bytes::get_Java_u2(code_base + source_bci + 1);
+      os->print("%d", con);
+      return true;
+    }
+   case Bytecodes::_iaload:
+   case Bytecodes::_aaload: {
+      // Print the 'name' of the array. Go back to the bytecode that
+      // pushed the array reference on the operand stack.
+     if (!print_NPE_cause0(os, source_bci, 1, max_detail - 1, inner_expr)) {
+        //  Returned false. Max recursion depth was reached. Print dummy.
+        os->print("<array>");
+      }
+      os->print("[");
+      // Print the index expression. Go back to the bytecode that
+      // pushed the index on the operand stack.
+      // inner_expr == true so we don't print unwanted strings
+      // as "The return value of'". And don't decrement max_detail so we always
+      // get a value here and only cancel out on the dereference.
+      if (!print_NPE_cause0(os, source_bci, 0, max_detail, true)) {
+        // Returned false. We don't print complex array index expressions. Print placeholder.
+        os->print("...");
+      }
+      os->print("]");
+      return true;
+    }
+
+    case Bytecodes::_getstatic: {
+      int cp_index = Bytes::get_native_u2(code_base + pos) + ConstantPool::CPCACHE_INDEX_TAG;
+      print_field_and_class(os, _method, cp_index);
+      return true;
+    }
+
+    case Bytecodes::_getfield: {
+      // Print the sender. Go back to the bytecode that
+      // pushed the sender on the operand stack.
+      if (print_NPE_cause0(os, source_bci, 0, max_detail - 1, inner_expr)) {
+        os->print(".");
+      }
+      int cp_index = Bytes::get_native_u2(code_base + pos) + ConstantPool::CPCACHE_INDEX_TAG;
+      os->print("%s", get_field_name(_method, cp_index));
+      return true;
+    }
+
+    case Bytecodes::_invokevirtual:
+    case Bytecodes::_invokespecial:
+    case Bytecodes::_invokestatic:
+    case Bytecodes::_invokeinterface: {
+      int cp_index = Bytes::get_native_u2(code_base + pos) DEBUG_ONLY(+ ConstantPool::CPCACHE_INDEX_TAG);
+      if (max_detail == _max_cause_detail && !inner_expr) {
+        os->print(" because the return value of \"");
+      }
+      print_method_name(os, _method, cp_index);
+      return true;
+    }
+
+    default: break;
+  }
+  return false;
+}
+
+void ExceptionMessageBuilder::print_NPE_failed_action(outputStream *os, int bci) {
+
+  // Get the bytecode.
+  address code_base = _method->constMethod()->code_base();
+  Bytecodes::Code code = Bytecodes::java_code_at(_method, code_base + bci);
+  int pos = bci + 1;
+  if (code == Bytecodes::_wide) {
+    code = Bytecodes::java_code_at(_method, code_base + bci + 1);
+    pos += 1;
+  }
+
+  switch (code) {
+    case Bytecodes::_iaload:
+      os->print("Cannot load from int array"); break;
+    case Bytecodes::_faload:
+      os->print("Cannot load from float array"); break;
+    case Bytecodes::_aaload:
+      os->print("Cannot load from object array"); break;
+    case Bytecodes::_baload:
+      os->print("Cannot load from byte/boolean array"); break;
+    case Bytecodes::_caload:
+      os->print("Cannot load from char array"); break;
+    case Bytecodes::_saload:
+      os->print("Cannot load from short array"); break;
+    case Bytecodes::_laload:
+      os->print("Cannot load from long array"); break;
+    case Bytecodes::_daload:
+      os->print("Cannot load from double array"); break;
+
+    case Bytecodes::_iastore:
+      os->print("Cannot store to int array"); break;
+    case Bytecodes::_fastore:
+      os->print("Cannot store to float array"); break;
+    case Bytecodes::_aastore:
+      os->print("Cannot store to object array"); break;
+    case Bytecodes::_bastore:
+      os->print("Cannot store to byte/boolean array"); break;
+    case Bytecodes::_castore:
+      os->print("Cannot store to char array"); break;
+    case Bytecodes::_sastore:
+      os->print("Cannot store to short array"); break;
+    case Bytecodes::_lastore:
+      os->print("Cannot store to long array"); break;
+    case Bytecodes::_dastore:
+      os->print("Cannot store to double array"); break;
+
+    case Bytecodes::_arraylength:
+      os->print("Cannot read the array length"); break;
+    case Bytecodes::_athrow:
+      os->print("Cannot throw exception"); break;
+    case Bytecodes::_monitorenter:
+      os->print("Cannot enter synchronized block"); break;
+    case Bytecodes::_monitorexit:
+      os->print("Cannot exit synchronized block"); break;
+    case Bytecodes::_getfield: {
+        int cp_index = Bytes::get_native_u2(code_base + pos) DEBUG_ONLY(+ ConstantPool::CPCACHE_INDEX_TAG);
+        ConstantPool* cp = _method->constants();
+        int name_and_type_index = cp->name_and_type_ref_index_at(cp_index);
+        int name_index = cp->name_ref_index_at(name_and_type_index);
+        Symbol* name = cp->symbol_at(name_index);
+        os->print("Cannot read field \"%s\"", name->as_C_string());
+      } break;
+    case Bytecodes::_putfield: {
+        int cp_index = Bytes::get_native_u2(code_base + pos) DEBUG_ONLY(+ ConstantPool::CPCACHE_INDEX_TAG);
+        os->print("Cannot assign field \"%s\"", get_field_name(_method, cp_index));
+      } break;
+    case Bytecodes::_invokevirtual:
+    case Bytecodes::_invokespecial:
+    case Bytecodes::_invokeinterface: {
+        int cp_index = Bytes::get_native_u2(code_base+ pos) DEBUG_ONLY(+ ConstantPool::CPCACHE_INDEX_TAG);
+        os->print("Cannot invoke \"");
+        print_method_name(os, _method, cp_index);
+        os->print("\"");
+      } break;
+
+    default:
+      assert(0, "We should have checked this bytecode in get_NPE_null_slot().");
+      break;
+  }
+}
+
+// Main API
+bool BytecodeUtils::get_NPE_message_at(outputStream* ss, Method* method, int bci) {
+
+  NoSafepointVerifier _nsv;   // Cannot use this object over a safepoint.
+
+  // If this NPE was created via reflection, we have no real NPE.
+  if (method->method_holder() ==
+      SystemDictionary::reflect_NativeConstructorAccessorImpl_klass()) {
+    return false;
+  }
+
+  // Analyse the bytecodes.
+  ResourceMark rm;
+  ExceptionMessageBuilder emb(method, bci);
+
+  // The slot of the operand stack that contains the null reference.
+  // Also checks for NPE explicitly constructed and returns NPE_EXPLICIT_CONSTRUCTED.
+  int slot = emb.get_NPE_null_slot(bci);
+
+  // Build the message.
+  if (slot == NPE_EXPLICIT_CONSTRUCTED) {
+    // We don't want to print a message.
+    return false;
+  } else if (slot == INVALID_BYTECODE_ENCOUNTERED) {
+    // We encountered a bytecode that does not dereference a reference.
+    DEBUG_ONLY(ss->print("There cannot be a NullPointerException at bci %d of method %s",
+                         bci, method->external_name()));
+    NOT_DEBUG(return false);
+  } else {
+    // Print string describing which action (bytecode) could not be
+    // performed because of the null reference.
+    emb.print_NPE_failed_action(ss, bci);
+    // Print a description of what is null.
+    if (!emb.print_NPE_cause(ss, bci, slot)) {
+      // Nothing was printed. End the sentence without the 'because'
+      // subordinate sentence.
+    }
+  }
+  return true;
+}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hotspot/share/interpreter/bytecodeUtils.hpp	Wed Oct 23 14:01:17 2019 -0400
@@ -0,0 +1,41 @@
+/*
+ * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2019 SAP SE. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+#ifndef SHARE_INTERPRETER_BYTECODEUTILS_HPP
+#define SHARE_INTERPRETER_BYTECODEUTILS_HPP
+
+#include "memory/allocation.hpp"
+#include "utilities/globalDefinitions.hpp"
+
+class Method;
+class outputStream;
+
+class BytecodeUtils : public AllStatic {
+ public:
+  // NPE extended message. Return true if string is printed.
+  static bool get_NPE_message_at(outputStream* ss, Method* method, int bci);
+};
+
+#endif // SHARE_INTERPRETER_BYTECODEUTILS_HPP
--- a/src/hotspot/share/interpreter/interpreterRuntime.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/interpreter/interpreterRuntime.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -1249,15 +1249,15 @@
   char sig_type = '\0';
 
   switch(cp_entry->flag_state()) {
-    case btos: sig_type = 'B'; break;
-    case ztos: sig_type = 'Z'; break;
-    case ctos: sig_type = 'C'; break;
-    case stos: sig_type = 'S'; break;
-    case itos: sig_type = 'I'; break;
-    case ftos: sig_type = 'F'; break;
-    case atos: sig_type = 'L'; break;
-    case ltos: sig_type = 'J'; break;
-    case dtos: sig_type = 'D'; break;
+    case btos: sig_type = JVM_SIGNATURE_BYTE;    break;
+    case ztos: sig_type = JVM_SIGNATURE_BOOLEAN; break;
+    case ctos: sig_type = JVM_SIGNATURE_CHAR;    break;
+    case stos: sig_type = JVM_SIGNATURE_SHORT;   break;
+    case itos: sig_type = JVM_SIGNATURE_INT;     break;
+    case ftos: sig_type = JVM_SIGNATURE_FLOAT;   break;
+    case atos: sig_type = JVM_SIGNATURE_CLASS;   break;
+    case ltos: sig_type = JVM_SIGNATURE_LONG;    break;
+    case dtos: sig_type = JVM_SIGNATURE_DOUBLE;  break;
     default:  ShouldNotReachHere(); return;
   }
   bool is_static = (obj == NULL);
--- a/src/hotspot/share/jvmci/compilerRuntime.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/jvmci/compilerRuntime.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -73,7 +73,7 @@
   Handle protection_domain(THREAD, caller->method_holder()->protection_domain());
 
   // Ignore wrapping L and ;
-  if (name[0] == 'L') {
+  if (name[0] == JVM_SIGNATURE_CLASS) {
     assert(len > 2, "small name %s", name);
     name++;
     len -= 2;
--- a/src/hotspot/share/jvmci/jvmciCompilerToVM.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/jvmci/jvmciCompilerToVM.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -535,8 +535,8 @@
       JVMCI_THROW_MSG_NULL(ClassNotFoundException, str);
     }
   } else {
-    if (class_name->char_at(0) == 'L' &&
-      class_name->char_at(class_name->utf8_length()-1) == ';') {
+    if (class_name->char_at(0) == JVM_SIGNATURE_CLASS &&
+        class_name->char_at(class_name->utf8_length()-1) == JVM_SIGNATURE_ENDCLASS) {
       // This is a name from a signature.  Strip off the trimmings.
       // Call recursive to keep scope of strippedsym.
       TempNewSymbol strippedsym = SymbolTable::new_symbol(class_name->as_utf8()+1,
--- a/src/hotspot/share/jvmci/jvmciRuntime.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/jvmci/jvmciRuntime.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -980,8 +980,8 @@
   JVMCI_EXCEPTION_CONTEXT;
 
   // Now we need to check the SystemDictionary
-  if (sym->char_at(0) == 'L' &&
-    sym->char_at(sym->utf8_length()-1) == ';') {
+  if (sym->char_at(0) == JVM_SIGNATURE_CLASS &&
+      sym->char_at(sym->utf8_length()-1) == JVM_SIGNATURE_ENDCLASS) {
     // This is a name from a signature.  Strip off the trimmings.
     // Call recursive to keep scope of strippedsym.
     TempNewSymbol strippedsym = SymbolTable::new_symbol(sym->as_utf8()+1,
@@ -1013,8 +1013,8 @@
   // we must build an array type around it.  The CI requires array klasses
   // to be loaded if their element klasses are loaded, except when memory
   // is exhausted.
-  if (sym->char_at(0) == '[' &&
-      (sym->char_at(1) == '[' || sym->char_at(1) == 'L')) {
+  if (sym->char_at(0) == JVM_SIGNATURE_ARRAY &&
+      (sym->char_at(1) == JVM_SIGNATURE_ARRAY || sym->char_at(1) == JVM_SIGNATURE_CLASS)) {
     // We have an unloaded array.
     // Build it on the fly if the element class exists.
     TempNewSymbol elem_sym = SymbolTable::new_symbol(sym->as_utf8()+1,
@@ -1271,7 +1271,7 @@
   if (method_holder->is_instance_klass()) {
     return InstanceKlass::cast(method_holder);
   } else if (method_holder->is_array_klass()) {
-    return InstanceKlass::cast(SystemDictionary::Object_klass());
+    return SystemDictionary::Object_klass();
   } else {
     ShouldNotReachHere();
   }
--- a/src/hotspot/share/memory/heapInspection.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/memory/heapInspection.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2002, 2018, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2002, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -72,8 +72,8 @@
   ResourceMark rm;
   const char* name1 = e1->klass()->external_name();
   const char* name2 = e2->klass()->external_name();
-  bool d1 = (name1[0] == '[');
-  bool d2 = (name2[0] == '[');
+  bool d1 = (name1[0] == JVM_SIGNATURE_ARRAY);
+  bool d2 = (name2[0] == JVM_SIGNATURE_ARRAY);
   if (d1 && !d2) {
     return -1;
   } else if (d2 && !d1) {
--- a/src/hotspot/share/oops/generateOopMap.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/oops/generateOopMap.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2018, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -1993,14 +1993,14 @@
 // This is used to parse the signature for fields, since they are very simple...
 CellTypeState *GenerateOopMap::sigchar_to_effect(char sigch, int bci, CellTypeState *out) {
   // Object and array
-  if (sigch=='L' || sigch=='[') {
+  if (sigch==JVM_SIGNATURE_CLASS || sigch==JVM_SIGNATURE_ARRAY) {
     out[0] = CellTypeState::make_line_ref(bci);
     out[1] = CellTypeState::bottom;
     return out;
   }
-  if (sigch == 'J' || sigch == 'D' ) return vvCTS;  // Long and Double
-  if (sigch == 'V' ) return epsilonCTS;             // Void
-  return vCTS;                                      // Otherwise
+  if (sigch == JVM_SIGNATURE_LONG || sigch == JVM_SIGNATURE_DOUBLE) return vvCTS;  // Long and Double
+  if (sigch == JVM_SIGNATURE_VOID) return epsilonCTS; // Void
+  return vCTS;                                        // Otherwise
 }
 
 long GenerateOopMap::_total_byte_count = 0;
--- a/src/hotspot/share/oops/instanceKlass.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/oops/instanceKlass.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -2497,10 +2497,18 @@
 #endif
 }
 
+static void method_release_C_heap_structures(Method* m) {
+  m->release_C_heap_structures();
+}
+
 void InstanceKlass::release_C_heap_structures(InstanceKlass* ik) {
   // Clean up C heap
   ik->release_C_heap_structures();
   ik->constants()->release_C_heap_structures();
+
+  // Deallocate and call destructors for MDO mutexes
+  ik->methods_do(method_release_C_heap_structures);
+
 }
 
 void InstanceKlass::release_C_heap_structures() {
@@ -2586,7 +2594,7 @@
 
   // Add L as type indicator
   int dest_index = 0;
-  dest[dest_index++] = 'L';
+  dest[dest_index++] = JVM_SIGNATURE_CLASS;
 
   // Add the actual class name
   for (int src_index = 0; src_index < src_length; ) {
@@ -2599,7 +2607,7 @@
   }
 
   // Add the semicolon and the NULL
-  dest[dest_index++] = ';';
+  dest[dest_index++] = JVM_SIGNATURE_ENDCLASS;
   dest[dest_index] = '\0';
   return dest;
 }
--- a/src/hotspot/share/oops/klass.hpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/oops/klass.hpp	Wed Oct 23 14:01:17 2019 -0400
@@ -340,19 +340,17 @@
   static ByteSize access_flags_offset()          { return in_ByteSize(offset_of(Klass, _access_flags)); }
 
   // Unpacking layout_helper:
-  enum {
-    _lh_neutral_value           = 0,  // neutral non-array non-instance value
-    _lh_instance_slow_path_bit  = 0x01,
-    _lh_log2_element_size_shift = BitsPerByte*0,
-    _lh_log2_element_size_mask  = BitsPerLong-1,
-    _lh_element_type_shift      = BitsPerByte*1,
-    _lh_element_type_mask       = right_n_bits(BitsPerByte),  // shifted mask
-    _lh_header_size_shift       = BitsPerByte*2,
-    _lh_header_size_mask        = right_n_bits(BitsPerByte),  // shifted mask
-    _lh_array_tag_bits          = 2,
-    _lh_array_tag_shift         = BitsPerInt - _lh_array_tag_bits,
-    _lh_array_tag_obj_value     = ~0x01   // 0x80000000 >> 30
-  };
+  static const int _lh_neutral_value           = 0;  // neutral non-array non-instance value
+  static const int _lh_instance_slow_path_bit  = 0x01;
+  static const int _lh_log2_element_size_shift = BitsPerByte*0;
+  static const int _lh_log2_element_size_mask  = BitsPerLong-1;
+  static const int _lh_element_type_shift      = BitsPerByte*1;
+  static const int _lh_element_type_mask       = right_n_bits(BitsPerByte);  // shifted mask
+  static const int _lh_header_size_shift       = BitsPerByte*2;
+  static const int _lh_header_size_mask        = right_n_bits(BitsPerByte);  // shifted mask
+  static const int _lh_array_tag_bits          = 2;
+  static const int _lh_array_tag_shift         = BitsPerInt - _lh_array_tag_bits;
+  static const int _lh_array_tag_obj_value     = ~0x01;   // 0x80000000 >> 30
 
   static const unsigned int _lh_array_tag_type_value = 0Xffffffff; // ~0x00,  // 0xC0000000 >> 30
 
--- a/src/hotspot/share/oops/method.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/oops/method.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -118,11 +118,6 @@
 void Method::deallocate_contents(ClassLoaderData* loader_data) {
   MetadataFactory::free_metadata(loader_data, constMethod());
   set_constMethod(NULL);
-#if INCLUDE_JVMCI
-  if (method_data()) {
-    FailedSpeculation::free_failed_speculations(method_data()->get_failed_speculations_address());
-  }
-#endif
   MetadataFactory::free_metadata(loader_data, method_data());
   set_method_data(NULL);
   MetadataFactory::free_metadata(loader_data, method_counters());
@@ -131,6 +126,16 @@
   if (code() != NULL) _code = NULL;
 }
 
+void Method::release_C_heap_structures() {
+  if (method_data()) {
+#if INCLUDE_JVMCI
+    FailedSpeculation::free_failed_speculations(method_data()->get_failed_speculations_address());
+#endif
+    // Destroy MethodData
+    method_data()->~MethodData();
+  }
+}
+
 address Method::get_i2c_entry() {
   assert(adapter() != NULL, "must have");
   return adapter()->get_i2c_entry();
--- a/src/hotspot/share/oops/method.hpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/oops/method.hpp	Wed Oct 23 14:01:17 2019 -0400
@@ -1006,6 +1006,8 @@
   // Deallocation function for redefine classes or if an error occurs
   void deallocate_contents(ClassLoaderData* loader_data);
 
+  void release_C_heap_structures();
+
   Method* get_new_method() const {
     InstanceKlass* holder = method_holder();
     Method* new_method = holder->method_with_idnum(orig_method_idnum());
--- a/src/hotspot/share/oops/methodData.hpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/oops/methodData.hpp	Wed Oct 23 14:01:17 2019 -0400
@@ -2445,7 +2445,7 @@
   virtual void metaspace_pointers_do(MetaspaceClosure* iter);
   virtual MetaspaceObj::Type type() const { return MethodDataType; }
 
-  // Deallocation support - no pointer fields to deallocate
+  // Deallocation support - no metaspace pointer fields to deallocate
   void deallocate_contents(ClassLoaderData* loader_data) {}
 
   // GC support
--- a/src/hotspot/share/oops/objArrayKlass.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/oops/objArrayKlass.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -106,14 +106,14 @@
     int len = element_klass->name()->utf8_length();
     char *new_str = NEW_RESOURCE_ARRAY(char, len + 4);
     int idx = 0;
-    new_str[idx++] = '[';
+    new_str[idx++] = JVM_SIGNATURE_ARRAY;
     if (element_klass->is_instance_klass()) { // it could be an array or simple type
-      new_str[idx++] = 'L';
+      new_str[idx++] = JVM_SIGNATURE_CLASS;
     }
     memcpy(&new_str[idx], name_str, len * sizeof(char));
     idx += len;
     if (element_klass->is_instance_klass()) {
-      new_str[idx++] = ';';
+      new_str[idx++] = JVM_SIGNATURE_ENDCLASS;
     }
     new_str[idx++] = '\0';
     name = SymbolTable::new_permanent_symbol(new_str);
--- a/src/hotspot/share/oops/symbol.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/oops/symbol.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -201,8 +201,8 @@
   int   length = (int)strlen(str);
   // Turn all '/'s into '.'s (also for array klasses)
   for (int index = 0; index < length; index++) {
-    if (str[index] == '/') {
-      str[index] = '.';
+    if (str[index] == JVM_SIGNATURE_SLASH) {
+      str[index] = JVM_SIGNATURE_DOT;
     }
   }
   return str;
@@ -210,8 +210,8 @@
 
 static void print_class(outputStream *os, char *class_str, int len) {
   for (int i = 0; i < len; ++i) {
-    if (class_str[i] == '/') {
-      os->put('.');
+    if (class_str[i] == JVM_SIGNATURE_SLASH) {
+      os->put(JVM_SIGNATURE_DOT);
     } else {
       os->put(class_str[i]);
     }
@@ -221,9 +221,9 @@
 static void print_array(outputStream *os, char *array_str, int len) {
   int dimensions = 0;
   for (int i = 0; i < len; ++i) {
-    if (array_str[i] == '[') {
+    if (array_str[i] == JVM_SIGNATURE_ARRAY) {
       dimensions++;
-    } else if (array_str[i] == 'L') {
+    } else if (array_str[i] == JVM_SIGNATURE_CLASS) {
       // Expected format: L<type name>;. Skip 'L' and ';' delimiting the type name.
       print_class(os, array_str+i+1, len-i-2);
       break;
--- a/src/hotspot/share/opto/convertnode.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/opto/convertnode.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -532,6 +532,11 @@
 }
 
 //=============================================================================
+RoundDoubleModeNode* RoundDoubleModeNode::make(PhaseGVN& gvn, Node* arg, RoundDoubleModeNode::RoundingMode rmode) {
+  ConINode* rm = gvn.intcon(rmode);
+  return new RoundDoubleModeNode(arg, (Node *)rm);
+}
+
 //------------------------------Identity---------------------------------------
 // Remove redundant roundings.
 Node* RoundDoubleModeNode::Identity(PhaseGVN* phase) {
--- a/src/hotspot/share/opto/convertnode.hpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/opto/convertnode.hpp	Wed Oct 23 14:01:17 2019 -0400
@@ -215,7 +215,13 @@
 //-----------------------------RoundDoubleModeNode-----------------------------
 class RoundDoubleModeNode: public Node {
   public:
+  enum RoundingMode {
+    rmode_rint  = 0,
+    rmode_floor = 1,
+    rmode_ceil  = 2
+  };
   RoundDoubleModeNode(Node *in1, Node * rmode): Node(0, in1, rmode) {}
+  static RoundDoubleModeNode* make(PhaseGVN& gvn, Node* arg, RoundDoubleModeNode::RoundingMode rmode);
   virtual int   Opcode() const;
   virtual const Type *bottom_type() const { return Type::DOUBLE; }
   virtual uint  ideal_reg() const { return Op_RegD; }
--- a/src/hotspot/share/opto/library_call.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/opto/library_call.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -1822,9 +1822,9 @@
   switch (id) {
   case vmIntrinsics::_dabs:   n = new AbsDNode(                arg);  break;
   case vmIntrinsics::_dsqrt:  n = new SqrtDNode(C, control(),  arg);  break;
-  case vmIntrinsics::_ceil:   n = new RoundDoubleModeNode(arg, makecon(TypeInt::make(2))); break;
-  case vmIntrinsics::_floor:  n = new RoundDoubleModeNode(arg, makecon(TypeInt::make(1))); break;
-  case vmIntrinsics::_rint:   n = new RoundDoubleModeNode(arg, makecon(TypeInt::make(0))); break;
+  case vmIntrinsics::_ceil:   n = RoundDoubleModeNode::make(_gvn, arg, RoundDoubleModeNode::rmode_ceil); break;
+  case vmIntrinsics::_floor:  n = RoundDoubleModeNode::make(_gvn, arg, RoundDoubleModeNode::rmode_floor); break;
+  case vmIntrinsics::_rint:   n = RoundDoubleModeNode::make(_gvn, arg, RoundDoubleModeNode::rmode_rint); break;
   default:  fatal_unexpected_iid(id);  break;
   }
   set_result(_gvn.transform(n));
--- a/src/hotspot/share/opto/memnode.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/opto/memnode.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -736,9 +736,7 @@
 // Also, asserts a cross-check of the type against the expected address type.
 const TypePtr* MemNode::calculate_adr_type(const Type* t, const TypePtr* cross_check) {
   if (t == Type::TOP)  return NULL; // does not touch memory any more?
-  #ifdef PRODUCT
-  cross_check = NULL;
-  #else
+  #ifdef ASSERT
   if (!VerifyAliases || VMError::is_error_reported() || Node::in_dump())  cross_check = NULL;
   #endif
   const TypePtr* tp = t->isa_ptr();
@@ -3534,37 +3532,51 @@
 // within the initialization without creating a vicious cycle, such as:
 //     { Foo p = new Foo(); p.next = p; }
 // True for constants and parameters and small combinations thereof.
-bool InitializeNode::detect_init_independence(Node* n, int& count) {
-  if (n == NULL)      return true;   // (can this really happen?)
-  if (n->is_Proj())   n = n->in(0);
-  if (n == this)      return false;  // found a cycle
-  if (n->is_Con())    return true;
-  if (n->is_Start())  return true;   // params, etc., are OK
-  if (n->is_Root())   return true;   // even better
-
-  Node* ctl = n->in(0);
-  if (ctl != NULL && !ctl->is_top()) {
-    if (ctl->is_Proj())  ctl = ctl->in(0);
-    if (ctl == this)  return false;
-
-    // If we already know that the enclosing memory op is pinned right after
-    // the init, then any control flow that the store has picked up
-    // must have preceded the init, or else be equal to the init.
-    // Even after loop optimizations (which might change control edges)
-    // a store is never pinned *before* the availability of its inputs.
-    if (!MemNode::all_controls_dominate(n, this))
-      return false;                  // failed to prove a good control
-  }
-
-  // Check data edges for possible dependencies on 'this'.
-  if ((count += 1) > 20)  return false;  // complexity limit
-  for (uint i = 1; i < n->req(); i++) {
-    Node* m = n->in(i);
-    if (m == NULL || m == n || m->is_top())  continue;
-    uint first_i = n->find_edge(m);
-    if (i != first_i)  continue;  // process duplicate edge just once
-    if (!detect_init_independence(m, count)) {
-      return false;
+bool InitializeNode::detect_init_independence(Node* value, PhaseGVN* phase) {
+  ResourceMark rm;
+  Unique_Node_List worklist;
+  worklist.push(value);
+
+  uint complexity_limit = 20;
+  for (uint j = 0; j < worklist.size(); j++) {
+    if (j >= complexity_limit) {
+      return false;  // Bail out if processed too many nodes
+    }
+
+    Node* n = worklist.at(j);
+    if (n == NULL)      continue;   // (can this really happen?)
+    if (n->is_Proj())   n = n->in(0);
+    if (n == this)      return false;  // found a cycle
+    if (n->is_Con())    continue;
+    if (n->is_Start())  continue;   // params, etc., are OK
+    if (n->is_Root())   continue;   // even better
+
+    // There cannot be any dependency if 'n' is a CFG node that dominates the current allocation
+    if (n->is_CFG() && phase->is_dominator(n, allocation())) {
+      continue;
+    }
+
+    Node* ctl = n->in(0);
+    if (ctl != NULL && !ctl->is_top()) {
+      if (ctl->is_Proj())  ctl = ctl->in(0);
+      if (ctl == this)  return false;
+
+      // If we already know that the enclosing memory op is pinned right after
+      // the init, then any control flow that the store has picked up
+      // must have preceded the init, or else be equal to the init.
+      // Even after loop optimizations (which might change control edges)
+      // a store is never pinned *before* the availability of its inputs.
+      if (!MemNode::all_controls_dominate(n, this))
+        return false;                  // failed to prove a good control
+    }
+
+    // Check data edges for possible dependencies on 'this'.
+    for (uint i = 1; i < n->req(); i++) {
+      Node* m = n->in(i);
+      if (m == NULL || m == n || m->is_top())  continue;
+
+      // Only process data inputs once
+      worklist.push(m);
     }
   }
 
@@ -3575,7 +3587,7 @@
 // an initialization.  Returns zero if a check fails.
 // On success, returns the (constant) offset to which the store applies,
 // within the initialized memory.
-intptr_t InitializeNode::can_capture_store(StoreNode* st, PhaseTransform* phase, bool can_reshape) {
+intptr_t InitializeNode::can_capture_store(StoreNode* st, PhaseGVN* phase, bool can_reshape) {
   const int FAIL = 0;
   if (st->req() != MemNode::ValueIn + 1)
     return FAIL;                // an inscrutable StoreNode (card mark?)
@@ -3597,8 +3609,8 @@
     return FAIL;                // mismatched access
   }
   Node* val = st->in(MemNode::ValueIn);
-  int complexity_count = 0;
-  if (!detect_init_independence(val, complexity_count))
+
+  if (!detect_init_independence(val, phase))
     return FAIL;                // stored value must be 'simple enough'
 
   // The Store can be captured only if nothing after the allocation
@@ -3796,7 +3808,7 @@
 //                      rawstore1 rawstore2)
 //
 Node* InitializeNode::capture_store(StoreNode* st, intptr_t start,
-                                    PhaseTransform* phase, bool can_reshape) {
+                                    PhaseGVN* phase, bool can_reshape) {
   assert(stores_are_sane(phase), "");
 
   if (start < 0)  return NULL;
--- a/src/hotspot/share/opto/memnode.hpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/opto/memnode.hpp	Wed Oct 23 14:01:17 2019 -0400
@@ -1387,11 +1387,11 @@
 
   // See if this store can be captured; return offset where it initializes.
   // Return 0 if the store cannot be moved (any sort of problem).
-  intptr_t can_capture_store(StoreNode* st, PhaseTransform* phase, bool can_reshape);
+  intptr_t can_capture_store(StoreNode* st, PhaseGVN* phase, bool can_reshape);
 
   // Capture another store; reformat it to write my internal raw memory.
   // Return the captured copy, else NULL if there is some sort of problem.
-  Node* capture_store(StoreNode* st, intptr_t start, PhaseTransform* phase, bool can_reshape);
+  Node* capture_store(StoreNode* st, intptr_t start, PhaseGVN* phase, bool can_reshape);
 
   // Find captured store which corresponds to the range [start..start+size).
   // Return my own memory projection (meaning the initial zero bits)
@@ -1414,7 +1414,7 @@
 
   Node* make_raw_address(intptr_t offset, PhaseTransform* phase);
 
-  bool detect_init_independence(Node* n, int& count);
+  bool detect_init_independence(Node* value, PhaseGVN* phase);
 
   void coalesce_subword_stores(intptr_t header_size, Node* size_in_bytes,
                                PhaseGVN* phase);
--- a/src/hotspot/share/opto/phaseX.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/opto/phaseX.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -899,7 +899,7 @@
   while (d != n) {
     n = IfNode::up_one_dom(n, linear_only);
     i++;
-    if (n == NULL || i >= 10) {
+    if (n == NULL || i >= 100) {
       return false;
     }
   }
--- a/src/hotspot/share/prims/jni.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/prims/jni.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -2151,7 +2151,7 @@
   if (JvmtiExport::should_post_field_modification()) {
     jvalue field_value;
     field_value.l = value;
-    o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, 'L', (jvalue *)&field_value);
+    o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, JVM_SIGNATURE_CLASS, (jvalue *)&field_value);
   }
   HeapAccess<ON_UNKNOWN_OOP_REF>::oop_store_at(o, offset, JNIHandles::resolve(value));
   HOTSPOT_JNI_SETOBJECTFIELD_RETURN();
@@ -2177,34 +2177,34 @@
     field_value.unionType = value; \
     o = JvmtiExport::jni_SetField_probe_nh(thread, obj, o, k, fieldID, false, SigType, (jvalue *)&field_value); \
   } \
-  if (SigType == 'Z') { value = ((jboolean)value) & 1; } \
+  if (SigType == JVM_SIGNATURE_BOOLEAN) { value = ((jboolean)value) & 1; } \
   o->Fieldname##_field_put(offset, value); \
   ReturnProbe; \
 JNI_END
 
-DEFINE_SETFIELD(jboolean, bool,   Boolean, 'Z', z
+DEFINE_SETFIELD(jboolean, bool,   Boolean, JVM_SIGNATURE_BOOLEAN, z
                 , HOTSPOT_JNI_SETBOOLEANFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
                 HOTSPOT_JNI_SETBOOLEANFIELD_RETURN())
-DEFINE_SETFIELD(jbyte,    byte,   Byte,    'B', b
+DEFINE_SETFIELD(jbyte,    byte,   Byte,    JVM_SIGNATURE_BYTE, b
                 , HOTSPOT_JNI_SETBYTEFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
                 HOTSPOT_JNI_SETBYTEFIELD_RETURN())
-DEFINE_SETFIELD(jchar,    char,   Char,    'C', c
+DEFINE_SETFIELD(jchar,    char,   Char,    JVM_SIGNATURE_CHAR, c
                 , HOTSPOT_JNI_SETCHARFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
                 HOTSPOT_JNI_SETCHARFIELD_RETURN())
-DEFINE_SETFIELD(jshort,   short,  Short,   'S', s
+DEFINE_SETFIELD(jshort,   short,  Short,   JVM_SIGNATURE_SHORT, s
                 , HOTSPOT_JNI_SETSHORTFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
                 HOTSPOT_JNI_SETSHORTFIELD_RETURN())
-DEFINE_SETFIELD(jint,     int,    Int,     'I', i
+DEFINE_SETFIELD(jint,     int,    Int,     JVM_SIGNATURE_INT, i
                 , HOTSPOT_JNI_SETINTFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
                 HOTSPOT_JNI_SETINTFIELD_RETURN())
-DEFINE_SETFIELD(jlong,    long,   Long,    'J', j
+DEFINE_SETFIELD(jlong,    long,   Long,    JVM_SIGNATURE_LONG, j
                 , HOTSPOT_JNI_SETLONGFIELD_ENTRY(env, obj, (uintptr_t)fieldID, value),
                 HOTSPOT_JNI_SETLONGFIELD_RETURN())
 // Float and double probes don't return value because dtrace doesn't currently support it
-DEFINE_SETFIELD(jfloat,   float,  Float,   'F', f
+DEFINE_SETFIELD(jfloat,   float,  Float,   JVM_SIGNATURE_FLOAT, f
                 , HOTSPOT_JNI_SETFLOATFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
                 HOTSPOT_JNI_SETFLOATFIELD_RETURN())
-DEFINE_SETFIELD(jdouble,  double, Double,  'D', d
+DEFINE_SETFIELD(jdouble,  double, Double,  JVM_SIGNATURE_DOUBLE, d
                 , HOTSPOT_JNI_SETDOUBLEFIELD_ENTRY(env, obj, (uintptr_t)fieldID),
                 HOTSPOT_JNI_SETDOUBLEFIELD_RETURN())
 
@@ -2352,7 +2352,7 @@
   if (JvmtiExport::should_post_field_modification()) {
     jvalue field_value;
     field_value.l = value;
-    JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, 'L', (jvalue *)&field_value);
+    JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, JVM_SIGNATURE_CLASS, (jvalue *)&field_value);
   }
   id->holder()->java_mirror()->obj_field_put(id->offset(), JNIHandles::resolve(value));
   HOTSPOT_JNI_SETSTATICOBJECTFIELD_RETURN();
@@ -2376,34 +2376,34 @@
     field_value.unionType = value; \
     JvmtiExport::jni_SetField_probe(thread, NULL, NULL, id->holder(), fieldID, true, SigType, (jvalue *)&field_value); \
   } \
-  if (SigType == 'Z') { value = ((jboolean)value) & 1; } \
+  if (SigType == JVM_SIGNATURE_BOOLEAN) { value = ((jboolean)value) & 1; } \
   id->holder()->java_mirror()-> Fieldname##_field_put (id->offset(), value); \
   ReturnProbe;\
 JNI_END
 
-DEFINE_SETSTATICFIELD(jboolean, bool,   Boolean, 'Z', z
+DEFINE_SETSTATICFIELD(jboolean, bool,   Boolean, JVM_SIGNATURE_BOOLEAN, z
                       , HOTSPOT_JNI_SETSTATICBOOLEANFIELD_ENTRY(env, clazz, (uintptr_t)fieldID, value),
                       HOTSPOT_JNI_SETSTATICBOOLEANFIELD_RETURN())
-DEFINE_SETSTATICFIELD(jbyte,    byte,   Byte,    'B', b
+DEFINE_SETSTATICFIELD(jbyte,    byte,   Byte,    JVM_SIGNATURE_BYTE, b
                       , HOTSPOT_JNI_SETSTATICBYTEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
                       HOTSPOT_JNI_SETSTATICBYTEFIELD_RETURN())
-DEFINE_SETSTATICFIELD(jchar,    char,   Char,    'C', c
+DEFINE_SETSTATICFIELD(jchar,    char,   Char,    JVM_SIGNATURE_CHAR, c
                       , HOTSPOT_JNI_SETSTATICCHARFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
                       HOTSPOT_JNI_SETSTATICCHARFIELD_RETURN())
-DEFINE_SETSTATICFIELD(jshort,   short,  Short,   'S', s
+DEFINE_SETSTATICFIELD(jshort,   short,  Short,   JVM_SIGNATURE_SHORT, s
                       , HOTSPOT_JNI_SETSTATICSHORTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
                       HOTSPOT_JNI_SETSTATICSHORTFIELD_RETURN())
-DEFINE_SETSTATICFIELD(jint,     int,    Int,     'I', i
+DEFINE_SETSTATICFIELD(jint,     int,    Int,     JVM_SIGNATURE_INT, i
                       , HOTSPOT_JNI_SETSTATICINTFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
                       HOTSPOT_JNI_SETSTATICINTFIELD_RETURN())
-DEFINE_SETSTATICFIELD(jlong,    long,   Long,    'J', j
+DEFINE_SETSTATICFIELD(jlong,    long,   Long,    JVM_SIGNATURE_LONG, j
                       , HOTSPOT_JNI_SETSTATICLONGFIELD_ENTRY(env, clazz, (uintptr_t) fieldID, value),
                       HOTSPOT_JNI_SETSTATICLONGFIELD_RETURN())
 // Float and double probes don't return value because dtrace doesn't currently support it
-DEFINE_SETSTATICFIELD(jfloat,   float,  Float,   'F', f
+DEFINE_SETSTATICFIELD(jfloat,   float,  Float,   JVM_SIGNATURE_FLOAT, f
                       , HOTSPOT_JNI_SETSTATICFLOATFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),
                       HOTSPOT_JNI_SETSTATICFLOATFIELD_RETURN())
-DEFINE_SETSTATICFIELD(jdouble,  double, Double,  'D', d
+DEFINE_SETSTATICFIELD(jdouble,  double, Double,  JVM_SIGNATURE_DOUBLE, d
                       , HOTSPOT_JNI_SETSTATICDOUBLEFIELD_ENTRY(env, clazz, (uintptr_t) fieldID),
                       HOTSPOT_JNI_SETSTATICDOUBLEFIELD_RETURN())
 
--- a/src/hotspot/share/prims/jniCheck.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/prims/jniCheck.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -266,7 +266,7 @@
   /* check for proper subclass hierarchy */
   JNIid* id = jfieldIDWorkaround::from_static_jfieldID(fid);
   Klass* f_oop = id->holder();
-  if (!InstanceKlass::cast(k_oop)->is_subtype_of(f_oop))
+  if (!k_oop->is_subtype_of(f_oop))
     ReportJNIFatalError(thr, fatal_wrong_static_field);
 
   /* check for proper field type */
@@ -513,7 +513,7 @@
   assert(klass != NULL, "klass argument must have a value");
 
   if (!klass->is_instance_klass() ||
-      !InstanceKlass::cast(klass)->is_subclass_of(SystemDictionary::Throwable_klass())) {
+      !klass->is_subclass_of(SystemDictionary::Throwable_klass())) {
     ReportJNIFatalError(thr, fatal_class_not_a_throwable_class);
   }
 }
--- a/src/hotspot/share/prims/jvm.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/prims/jvm.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -38,6 +38,7 @@
 #include "classfile/vmSymbols.hpp"
 #include "gc/shared/collectedHeap.inline.hpp"
 #include "interpreter/bytecode.hpp"
+#include "interpreter/bytecodeUtils.hpp"
 #include "jfr/jfrEvents.hpp"
 #include "logging/log.hpp"
 #include "memory/heapShared.hpp"
@@ -531,13 +532,37 @@
 
 // java.lang.Throwable //////////////////////////////////////////////////////
 
-
 JVM_ENTRY(void, JVM_FillInStackTrace(JNIEnv *env, jobject receiver))
   JVMWrapper("JVM_FillInStackTrace");
   Handle exception(thread, JNIHandles::resolve_non_null(receiver));
   java_lang_Throwable::fill_in_stack_trace(exception);
 JVM_END
 
+// java.lang.NullPointerException ///////////////////////////////////////////
+
+JVM_ENTRY(jstring, JVM_GetExtendedNPEMessage(JNIEnv *env, jthrowable throwable))
+  if (!ShowCodeDetailsInExceptionMessages) return NULL;
+
+  oop exc = JNIHandles::resolve_non_null(throwable);
+
+  Method* method;
+  int bci;
+  if (!java_lang_Throwable::get_top_method_and_bci(exc, &method, &bci)) {
+    return NULL;
+  }
+  if (method->is_native()) {
+    return NULL;
+  }
+
+  stringStream ss;
+  bool ok = BytecodeUtils::get_NPE_message_at(&ss, method, bci);
+  if (ok) {
+    oop result = java_lang_String::create_oop_from_str(ss.base(), CHECK_0);
+    return (jstring) JNIHandles::make_local(env, result);
+  } else {
+    return NULL;
+  }
+JVM_END
 
 // java.lang.StackTraceElement //////////////////////////////////////////////
 
@@ -2283,7 +2308,7 @@
     ConstantPool* cp = InstanceKlass::cast(k)->constants();
     for (int index = cp->length() - 1; index >= 0; index--) {
       constantTag tag = cp->tag_at(index);
-      types[index] = (tag.is_unresolved_klass()) ? JVM_CONSTANT_Class : tag.value();
+      types[index] = (tag.is_unresolved_klass()) ? (unsigned char) JVM_CONSTANT_Class : tag.value();
     }
   }
 JVM_END
--- a/src/hotspot/share/prims/jvmtiEnvBase.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/prims/jvmtiEnvBase.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -1361,7 +1361,7 @@
     NULL_CHECK(ob_k, JVMTI_ERROR_INVALID_OBJECT);
 
     // Method return type signature.
-    char* ty_sign = 1 + strchr(signature->as_C_string(), ')');
+    char* ty_sign = 1 + strchr(signature->as_C_string(), JVM_SIGNATURE_ENDFUNC);
 
     if (!VM_GetOrSetLocal::is_assignable(ty_sign, ob_k, current_thread)) {
       return JVMTI_ERROR_TYPE_MISMATCH;
--- a/src/hotspot/share/prims/jvmtiExport.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/prims/jvmtiExport.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -1994,7 +1994,9 @@
   address location, Klass* field_klass, Handle object, jfieldID field,
   char sig_type, jvalue *value) {
 
-  if (sig_type == 'I' || sig_type == 'Z' || sig_type == 'B' || sig_type == 'C' || sig_type == 'S') {
+  if (sig_type == JVM_SIGNATURE_INT || sig_type == JVM_SIGNATURE_BOOLEAN ||
+      sig_type == JVM_SIGNATURE_BYTE || sig_type == JVM_SIGNATURE_CHAR ||
+      sig_type == JVM_SIGNATURE_SHORT) {
     // 'I' instructions are used for byte, char, short and int.
     // determine which it really is, and convert
     fieldDescriptor fd;
@@ -2005,22 +2007,22 @@
       // convert value from int to appropriate type
       switch (fd.field_type()) {
       case T_BOOLEAN:
-        sig_type = 'Z';
+        sig_type = JVM_SIGNATURE_BOOLEAN;
         value->i = 0; // clear it
         value->z = (jboolean)ival;
         break;
       case T_BYTE:
-        sig_type = 'B';
+        sig_type = JVM_SIGNATURE_BYTE;
         value->i = 0; // clear it
         value->b = (jbyte)ival;
         break;
       case T_CHAR:
-        sig_type = 'C';
+        sig_type = JVM_SIGNATURE_CHAR;
         value->i = 0; // clear it
         value->c = (jchar)ival;
         break;
       case T_SHORT:
-        sig_type = 'S';
+        sig_type = JVM_SIGNATURE_SHORT;
         value->i = 0; // clear it
         value->s = (jshort)ival;
         break;
@@ -2035,11 +2037,11 @@
     }
   }
 
-  assert(sig_type != '[', "array should have sig_type == 'L'");
+  assert(sig_type != JVM_SIGNATURE_ARRAY, "array should have sig_type == 'L'");
   bool handle_created = false;
 
   // convert oop to JNI handle.
-  if (sig_type == 'L') {
+  if (sig_type == JVM_SIGNATURE_CLASS) {
     handle_created = true;
     value->l = (jobject)JNIHandles::make_local(thread, (oop)value->l);
   }
--- a/src/hotspot/share/prims/jvmtiImpl.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/prims/jvmtiImpl.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -588,7 +588,8 @@
   assert(klass != NULL, "klass must not be NULL");
 
   int len = (int) strlen(ty_sign);
-  if (ty_sign[0] == 'L' && ty_sign[len-1] == ';') { // Need pure class/interface name
+  if (ty_sign[0] == JVM_SIGNATURE_CLASS &&
+      ty_sign[len-1] == JVM_SIGNATURE_ENDCLASS) { // Need pure class/interface name
     ty_sign++;
     len -= 2;
   }
--- a/src/hotspot/share/prims/jvmtiRedefineClasses.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/prims/jvmtiRedefineClasses.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -2166,14 +2166,14 @@
 
   switch (tag) {
     // These BaseType tag values are from Table 4.2 in VM spec:
-    case 'B':  // byte
-    case 'C':  // char
-    case 'D':  // double
-    case 'F':  // float
-    case 'I':  // int
-    case 'J':  // long
-    case 'S':  // short
-    case 'Z':  // boolean
+    case JVM_SIGNATURE_BYTE:
+    case JVM_SIGNATURE_CHAR:
+    case JVM_SIGNATURE_DOUBLE:
+    case JVM_SIGNATURE_FLOAT:
+    case JVM_SIGNATURE_INT:
+    case JVM_SIGNATURE_LONG:
+    case JVM_SIGNATURE_SHORT:
+    case JVM_SIGNATURE_BOOLEAN:
 
     // The remaining tag values are from Table 4.8 in the 2nd-edition of
     // the VM spec:
@@ -2244,7 +2244,7 @@
       }
       break;
 
-    case '[':
+    case JVM_SIGNATURE_ARRAY:
     {
       if ((byte_i_ref + 2) > annotations_typeArray->length()) {
         // not enough room for a num_values field
--- a/src/hotspot/share/prims/jvmtiTagMap.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/prims/jvmtiTagMap.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -1032,7 +1032,7 @@
 
 // helper function to tell if a field is a primitive field or not
 static inline bool is_primitive_field_type(char type) {
-  return (type != 'L' && type != '[');
+  return (type != JVM_SIGNATURE_CLASS && type != JVM_SIGNATURE_ARRAY);
 }
 
 // helper function to copy the value from location addr to jvalue.
--- a/src/hotspot/share/prims/methodHandles.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/prims/methodHandles.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -542,18 +542,22 @@
   const int len = sig->utf8_length();
   for (int i = 0; i < len; i++) {
     switch (sig->char_at(i)) {
-    case 'L':
+    case JVM_SIGNATURE_CLASS:
       // only java/lang/Object is valid here
       if (sig->index_of_at(i, OBJ_SIG, OBJ_SIG_LEN) != i)
         return false;
       i += OBJ_SIG_LEN-1;  //-1 because of i++ in loop
       continue;
-    case '(': case ')': case 'V':
-    case 'I': case 'J': case 'F': case 'D':
+    case JVM_SIGNATURE_FUNC:
+    case JVM_SIGNATURE_ENDFUNC:
+    case JVM_SIGNATURE_VOID:
+    case JVM_SIGNATURE_INT:
+    case JVM_SIGNATURE_LONG:
+    case JVM_SIGNATURE_FLOAT:
+    case JVM_SIGNATURE_DOUBLE:
       continue;
-    //case '[':
-    //case 'Z': case 'B': case 'C': case 'S':
     default:
+      // subword types (T_BYTE etc.), arrays
       return false;
     }
   }
@@ -567,7 +571,7 @@
   } else if (is_basic_type_signature(sig)) {
     sig->increment_refcount();
     return sig;  // that was easy
-  } else if (sig->char_at(0) != '(') {
+  } else if (sig->char_at(0) != JVM_SIGNATURE_FUNC) {
     BasicType bt = char2type(sig->char_at(0));
     if (is_subword_type(bt)) {
       bsig = vmSymbols::int_signature();
@@ -578,7 +582,7 @@
   } else {
     ResourceMark rm;
     stringStream buffer(128);
-    buffer.put('(');
+    buffer.put(JVM_SIGNATURE_FUNC);
     int arg_pos = 0, keep_arg_pos = -1;
     if (keep_last_arg)
       keep_arg_pos = ArgumentCount(sig).size() - 1;
@@ -586,7 +590,7 @@
       BasicType bt = ss.type();
       size_t this_arg_pos = buffer.size();
       if (ss.at_return_type()) {
-        buffer.put(')');
+        buffer.put(JVM_SIGNATURE_ENDFUNC);
       }
       if (arg_pos == keep_arg_pos) {
         buffer.write((char*) ss.raw_bytes(),
@@ -621,25 +625,26 @@
   for (int i = 0; i < len; i++) {
     char ch = sig->char_at(i);
     switch (ch) {
-    case '(': case ')':
+    case JVM_SIGNATURE_FUNC:
+    case JVM_SIGNATURE_ENDFUNC:
       prev_type = false;
       st->put(ch);
       continue;
-    case '[':
+    case JVM_SIGNATURE_ARRAY:
       if (!keep_basic_names && keep_arrays)
         st->put(ch);
       array++;
       continue;
-    case 'L':
+    case JVM_SIGNATURE_CLASS:
       {
         if (prev_type)  st->put(',');
         int start = i+1, slash = start;
-        while (++i < len && (ch = sig->char_at(i)) != ';') {
-          if (ch == '/' || ch == '.' || ch == '$')  slash = i+1;
+        while (++i < len && (ch = sig->char_at(i)) != JVM_SIGNATURE_ENDCLASS) {
+          if (ch == JVM_SIGNATURE_SLASH || ch == JVM_SIGNATURE_DOT || ch == '$')  slash = i+1;
         }
         if (slash < i)  start = slash;
         if (!keep_basic_names) {
-          st->put('L');
+          st->put(JVM_SIGNATURE_CLASS);
         } else {
           for (int j = start; j < i; j++)
             st->put(sig->char_at(j));
@@ -650,7 +655,7 @@
     default:
       {
         if (array && char2type(ch) != T_ILLEGAL && !keep_arrays) {
-          ch = '[';
+          ch = JVM_SIGNATURE_ARRAY;
           array = 0;
         }
         if (prev_type)  st->put(',');
@@ -978,7 +983,7 @@
   }
   if (sig != NULL) {
     if (sig->utf8_length() == 0)  return 0; // a match is not possible
-    if (sig->char_at(0) == '(')
+    if (sig->char_at(0) == JVM_SIGNATURE_FUNC)
       match_flags &= ~(IS_FIELD | IS_TYPE);
     else
       match_flags &= ~(IS_CONSTRUCTOR | IS_METHOD);
@@ -1456,7 +1461,7 @@
           {
             Symbol* type = caller->constants()->signature_ref_at(bss_index_in_pool);
             Handle th;
-            if (type->char_at(0) == '(') {
+            if (type->char_at(0) == JVM_SIGNATURE_FUNC) {
               th = SystemDictionary::find_method_handle_type(type, caller, CHECK);
             } else {
               th = SystemDictionary::find_java_mirror_for_type(type, caller, SignatureStream::NCDFError, CHECK);
--- a/src/hotspot/share/prims/nativeLookup.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/prims/nativeLookup.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -106,7 +106,7 @@
   st.print("__");
   // find ')'
   int end;
-  for (end = 0; end < signature->utf8_length() && signature->char_at(end) != ')'; end++);
+  for (end = 0; end < signature->utf8_length() && signature->char_at(end) != JVM_SIGNATURE_ENDFUNC; end++);
   // skip first '('
   mangle_name_on(&st, signature, 1, end);
   return st.as_string();
--- a/src/hotspot/share/runtime/arguments.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/runtime/arguments.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -3968,6 +3968,11 @@
       "Shared spaces are not supported in this VM\n");
     return JNI_ERR;
   }
+  if (DumpLoadedClassList != NULL) {
+    jio_fprintf(defaultStream::error_stream(),
+      "DumpLoadedClassList is not supported in this VM\n");
+    return JNI_ERR;
+  }
   if ((UseSharedSpaces && FLAG_IS_CMDLINE(UseSharedSpaces)) ||
       log_is_enabled(Info, cds)) {
     warning("Shared spaces are not supported in this VM");
--- a/src/hotspot/share/runtime/deoptimization.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/runtime/deoptimization.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -295,7 +295,7 @@
 
   // Reallocate the non-escaping objects and restore their fields. Then
   // relock objects if synchronization on them was eliminated.
-  if (jvmci_enabled || ((DoEscapeAnalysis || EliminateNestedLocks) && EliminateAllocations)) {
+  if (jvmci_enabled || (DoEscapeAnalysis && EliminateAllocations)) {
     realloc_failures = eliminate_allocations(thread, exec_mode, cm, deoptee, map, chunk);
   }
 #endif // COMPILER2_OR_JVMCI
--- a/src/hotspot/share/runtime/fieldType.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/runtime/fieldType.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -39,28 +39,28 @@
 // Check if it is a valid array signature
 bool FieldType::is_valid_array_signature(Symbol* sig) {
   assert(sig->utf8_length() > 1, "this should already have been checked");
-  assert(sig->char_at(0) == '[', "this should already have been checked");
+  assert(sig->char_at(0) == JVM_SIGNATURE_ARRAY, "this should already have been checked");
   // The first character is already checked
   int i = 1;
   int len = sig->utf8_length();
   // First skip all '['s
-  while(i < len - 1 && sig->char_at(i) == '[') i++;
+  while(i < len - 1 && sig->char_at(i) == JVM_SIGNATURE_ARRAY) i++;
 
   // Check type
   switch(sig->char_at(i)) {
-    case 'B': // T_BYTE
-    case 'C': // T_CHAR
-    case 'D': // T_DOUBLE
-    case 'F': // T_FLOAT
-    case 'I': // T_INT
-    case 'J': // T_LONG
-    case 'S': // T_SHORT
-    case 'Z': // T_BOOLEAN
+    case JVM_SIGNATURE_BYTE:
+    case JVM_SIGNATURE_CHAR:
+    case JVM_SIGNATURE_DOUBLE:
+    case JVM_SIGNATURE_FLOAT:
+    case JVM_SIGNATURE_INT:
+    case JVM_SIGNATURE_LONG:
+    case JVM_SIGNATURE_SHORT:
+    case JVM_SIGNATURE_BOOLEAN:
       // If it is an array, the type is the last character
       return (i + 1 == len);
-    case 'L':
+    case JVM_SIGNATURE_CLASS:
       // If it is an object, the last character must be a ';'
-      return sig->char_at(len - 1) == ';';
+      return sig->char_at(len - 1) == JVM_SIGNATURE_ENDCLASS;
   }
 
   return false;
@@ -71,7 +71,7 @@
   assert(basic_type(signature) == T_ARRAY, "must be array");
   int index = 1;
   int dim   = 1;
-  while (signature->char_at(index) == '[') {
+  while (signature->char_at(index) == JVM_SIGNATURE_ARRAY) {
     index++;
     dim++;
   }
@@ -80,7 +80,7 @@
   BasicType element_type = char2type(element[0]);
   if (element_type == T_OBJECT) {
     int len = (int)strlen(element);
-    assert(element[len-1] == ';', "last char should be a semicolon");
+    assert(element[len-1] == JVM_SIGNATURE_ENDCLASS, "last char should be a semicolon");
     element[len-1] = '\0';        // chop off semicolon
     fd._object_key = SymbolTable::new_symbol(element + 1);
   }
--- a/src/hotspot/share/runtime/fieldType.hpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/runtime/fieldType.hpp	Wed Oct 23 14:01:17 2019 -0400
@@ -58,14 +58,16 @@
   static BasicType basic_type(Symbol* signature);
 
   // Testing
-  static bool is_array(Symbol* signature) { return signature->utf8_length() > 1 && signature->char_at(0) == '[' && is_valid_array_signature(signature); }
+  static bool is_array(Symbol* signature) { return signature->utf8_length() > 1 &&
+                                                   signature->char_at(0) == JVM_SIGNATURE_ARRAY &&
+                                                   is_valid_array_signature(signature); }
 
   static bool is_obj(Symbol* signature) {
      int sig_length = signature->utf8_length();
      // Must start with 'L' and end with ';'
      return (sig_length >= 2 &&
-             (signature->char_at(0) == 'L') &&
-             (signature->char_at(sig_length - 1) == ';'));
+             (signature->char_at(0) == JVM_SIGNATURE_CLASS) &&
+             (signature->char_at(sig_length - 1) == JVM_SIGNATURE_ENDCLASS));
   }
 
   // Parse field and extract array information. Works for T_ARRAY only.
--- a/src/hotspot/share/runtime/globals.hpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/runtime/globals.hpp	Wed Oct 23 14:01:17 2019 -0400
@@ -643,6 +643,10 @@
   product(bool, OmitStackTraceInFastThrow, true,                            \
           "Omit backtraces for some 'hot' exceptions in optimized code")    \
                                                                             \
+  manageable(bool, ShowCodeDetailsInExceptionMessages, false,               \
+          "Show exception messages from RuntimeExceptions that contain "    \
+          "snippets of the failing code. Disable this to improve privacy.") \
+                                                                            \
   product(bool, PrintWarnings, true,                                        \
           "Print JVM warnings to output stream")                            \
                                                                             \
--- a/src/hotspot/share/runtime/mutexLocker.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/runtime/mutexLocker.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -334,12 +334,12 @@
 #if INCLUDE_JVMTI
   def(CDSClassFileStream_lock      , PaddedMutex  , max_nonleaf, false, _safepoint_check_always);
 #endif
+  def(DumpTimeTable_lock           , PaddedMutex  , leaf,        true,  _safepoint_check_never);
+#endif // INCLUDE_CDS
 
 #if INCLUDE_JVMCI
   def(JVMCI_lock                   , PaddedMonitor, nonleaf+2,   true,  _safepoint_check_always);
 #endif
-  def(DumpTimeTable_lock           , PaddedMutex  , leaf,        true,  _safepoint_check_never);
-#endif // INCLUDE_CDS
 }
 
 GCMutexLocker::GCMutexLocker(Mutex* mutex) {
--- a/src/hotspot/share/runtime/os.hpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/runtime/os.hpp	Wed Oct 23 14:01:17 2019 -0400
@@ -47,8 +47,6 @@
 // OS services (time, I/O) as well as other functionality with system-
 // dependent code.
 
-typedef void (*dll_func)(...);
-
 class Thread;
 class JavaThread;
 class NativeCallStack;
@@ -195,14 +193,9 @@
 
   // The "virtual time" of a thread is the amount of time a thread has
   // actually run.  The first function indicates whether the OS supports
-  // this functionality for the current thread, and if so:
-  //   * the second enables vtime tracking (if that is required).
-  //   * the third tells whether vtime is enabled.
-  //   * the fourth returns the elapsed virtual time for the current
-  //     thread.
+  // this functionality for the current thread, and if so the second
+  // returns the elapsed virtual time for the current thread.
   static bool supports_vtime();
-  static bool enable_vtime();
-  static bool vtime_enabled();
   static double elapsedVTime();
 
   // Return current local time in a string (YYYY-MM-DD HH:MM:SS).
@@ -254,14 +247,6 @@
     return _initial_active_processor_count;
   }
 
-  // Bind processes to processors.
-  //     This is a two step procedure:
-  //     first you generate a distribution of processes to processors,
-  //     then you bind processes according to that distribution.
-  // Compute a distribution for number of processes to processors.
-  //    Stores the processor id's into the distribution array argument.
-  //    Returns true if it worked, false if it didn't.
-  static bool distribute_processes(uint length, uint* distribution);
   // Binds the current process to a processor.
   //    Returns true if it worked, false if it didn't.
   static bool bind_to_processor(uint processor_id);
@@ -496,7 +481,6 @@
   static void verify_stack_alignment() PRODUCT_RETURN;
 
   static bool message_box(const char* title, const char* message);
-  static char* do_you_want_to_debug(const char* message);
 
   // run cmd in a separate process and return its exit code; or -1 on failures
   static int fork_and_exec(char *cmd, bool use_vfork_if_available = false);
@@ -520,7 +504,6 @@
   static void die();
 
   // File i/o operations
-  static const int default_file_open_flags();
   static int open(const char *path, int oflag, int mode);
   static FILE* open(int fd, const char* mode);
   static FILE* fopen(const char* path, const char* mode);
@@ -668,9 +651,6 @@
   // Will not change the value of errno.
   static const char* errno_name(int e);
 
-  // Determines whether the calling process is being debugged by a user-mode debugger.
-  static bool is_debugger_attached();
-
   // wait for a key press if PauseAtExit is set
   static void wait_for_keypress_at_exit(void);
 
@@ -966,10 +946,6 @@
       return _state == SR_RUNNING;
     }
 
-    bool is_suspend_request() const {
-      return _state == SR_SUSPEND_REQUEST;
-    }
-
     bool is_suspended() const {
       return _state == SR_SUSPENDED;
     }
--- a/src/hotspot/share/runtime/sharedRuntime.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/runtime/sharedRuntime.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -2990,28 +2990,28 @@
     sig_bt[cnt++] = T_OBJECT; // Receiver is argument 0; not in signature
   }
 
-  while (*s != ')') {          // Find closing right paren
-    switch (*s++) {            // Switch on signature character
-    case 'B': sig_bt[cnt++] = T_BYTE;    break;
-    case 'C': sig_bt[cnt++] = T_CHAR;    break;
-    case 'D': sig_bt[cnt++] = T_DOUBLE;  sig_bt[cnt++] = T_VOID; break;
-    case 'F': sig_bt[cnt++] = T_FLOAT;   break;
-    case 'I': sig_bt[cnt++] = T_INT;     break;
-    case 'J': sig_bt[cnt++] = T_LONG;    sig_bt[cnt++] = T_VOID; break;
-    case 'S': sig_bt[cnt++] = T_SHORT;   break;
-    case 'Z': sig_bt[cnt++] = T_BOOLEAN; break;
-    case 'V': sig_bt[cnt++] = T_VOID;    break;
-    case 'L':                   // Oop
-      while (*s++ != ';');   // Skip signature
+  while (*s != JVM_SIGNATURE_ENDFUNC) { // Find closing right paren
+    switch (*s++) {                     // Switch on signature character
+    case JVM_SIGNATURE_BYTE:    sig_bt[cnt++] = T_BYTE;    break;
+    case JVM_SIGNATURE_CHAR:    sig_bt[cnt++] = T_CHAR;    break;
+    case JVM_SIGNATURE_DOUBLE:  sig_bt[cnt++] = T_DOUBLE;  sig_bt[cnt++] = T_VOID; break;
+    case JVM_SIGNATURE_FLOAT:   sig_bt[cnt++] = T_FLOAT;   break;
+    case JVM_SIGNATURE_INT:     sig_bt[cnt++] = T_INT;     break;
+    case JVM_SIGNATURE_LONG:    sig_bt[cnt++] = T_LONG;    sig_bt[cnt++] = T_VOID; break;
+    case JVM_SIGNATURE_SHORT:   sig_bt[cnt++] = T_SHORT;   break;
+    case JVM_SIGNATURE_BOOLEAN: sig_bt[cnt++] = T_BOOLEAN; break;
+    case JVM_SIGNATURE_VOID:    sig_bt[cnt++] = T_VOID;    break;
+    case JVM_SIGNATURE_CLASS: // Oop
+      while (*s++ != JVM_SIGNATURE_ENDCLASS);   // Skip signature
       sig_bt[cnt++] = T_OBJECT;
       break;
-    case '[': {                 // Array
+    case JVM_SIGNATURE_ARRAY: { // Array
       do {                      // Skip optional size
         while (*s >= '0' && *s <= '9') s++;
-      } while (*s++ == '[');   // Nested arrays?
+      } while (*s++ == JVM_SIGNATURE_ARRAY);   // Nested arrays?
       // Skip element type
-      if (s[-1] == 'L')
-        while (*s++ != ';'); // Skip signature
+      if (s[-1] == JVM_SIGNATURE_CLASS)
+        while (*s++ != JVM_SIGNATURE_ENDCLASS); // Skip signature
       sig_bt[cnt++] = T_ARRAY;
       break;
     }
--- a/src/hotspot/share/runtime/signature.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/runtime/signature.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -63,41 +63,41 @@
   //       compiler bug (was problem - gri 4/27/2000).
   int size = -1;
   switch(_signature->char_at(_index)) {
-    case 'B': do_byte  (); if (_parameter_index < 0 ) _return_type = T_BYTE;
-              _index++; size = T_BYTE_size   ; break;
-    case 'C': do_char  (); if (_parameter_index < 0 ) _return_type = T_CHAR;
-              _index++; size = T_CHAR_size   ; break;
-    case 'D': do_double(); if (_parameter_index < 0 ) _return_type = T_DOUBLE;
-              _index++; size = T_DOUBLE_size ; break;
-    case 'F': do_float (); if (_parameter_index < 0 ) _return_type = T_FLOAT;
-              _index++; size = T_FLOAT_size  ; break;
-    case 'I': do_int   (); if (_parameter_index < 0 ) _return_type = T_INT;
-              _index++; size = T_INT_size    ; break;
-    case 'J': do_long  (); if (_parameter_index < 0 ) _return_type = T_LONG;
-              _index++; size = T_LONG_size   ; break;
-    case 'S': do_short (); if (_parameter_index < 0 ) _return_type = T_SHORT;
-              _index++; size = T_SHORT_size  ; break;
-    case 'Z': do_bool  (); if (_parameter_index < 0 ) _return_type = T_BOOLEAN;
-              _index++; size = T_BOOLEAN_size; break;
-    case 'V': do_void  (); if (_parameter_index < 0 ) _return_type = T_VOID;
-              _index++; size = T_VOID_size;  ; break;
-    case 'L':
+    case JVM_SIGNATURE_BYTE:    do_byte(); if (_parameter_index < 0 ) _return_type = T_BYTE;
+                                  _index++; size = T_BYTE_size; break;
+    case JVM_SIGNATURE_CHAR:    do_char(); if (_parameter_index < 0 ) _return_type = T_CHAR;
+                                  _index++; size = T_CHAR_size; break;
+    case JVM_SIGNATURE_DOUBLE:  do_double(); if (_parameter_index < 0 ) _return_type = T_DOUBLE;
+                                  _index++; size = T_DOUBLE_size; break;
+    case JVM_SIGNATURE_FLOAT:   do_float(); if (_parameter_index < 0 ) _return_type = T_FLOAT;
+                                  _index++; size = T_FLOAT_size; break;
+    case JVM_SIGNATURE_INT:     do_int(); if (_parameter_index < 0 ) _return_type = T_INT;
+                                  _index++; size = T_INT_size; break;
+    case JVM_SIGNATURE_LONG:    do_long(); if (_parameter_index < 0 ) _return_type = T_LONG;
+                                  _index++; size = T_LONG_size; break;
+    case JVM_SIGNATURE_SHORT:   do_short(); if (_parameter_index < 0 ) _return_type = T_SHORT;
+                                  _index++; size = T_SHORT_size; break;
+    case JVM_SIGNATURE_BOOLEAN: do_bool(); if (_parameter_index < 0 ) _return_type = T_BOOLEAN;
+                                  _index++; size = T_BOOLEAN_size; break;
+    case JVM_SIGNATURE_VOID:    do_void(); if (_parameter_index < 0 ) _return_type = T_VOID;
+                                  _index++; size = T_VOID_size; break;
+    case JVM_SIGNATURE_CLASS:
       { int begin = ++_index;
         Symbol* sig = _signature;
-        while (sig->char_at(_index++) != ';') ;
+        while (sig->char_at(_index++) != JVM_SIGNATURE_ENDCLASS) ;
         do_object(begin, _index);
       }
       if (_parameter_index < 0 ) _return_type = T_OBJECT;
       size = T_OBJECT_size;
       break;
-    case '[':
+    case JVM_SIGNATURE_ARRAY:
       { int begin = ++_index;
         Symbol* sig = _signature;
-        while (sig->char_at(_index) == '[') {
+        while (sig->char_at(_index) == JVM_SIGNATURE_ARRAY) {
           _index++;
         }
-        if (sig->char_at(_index) == 'L') {
-          while (sig->char_at(_index++) != ';') ;
+        if (sig->char_at(_index) == JVM_SIGNATURE_CLASS) {
+          while (sig->char_at(_index++) != JVM_SIGNATURE_ENDCLASS) ;
         } else {
           _index++;
         }
@@ -128,9 +128,9 @@
   // Parse parameters
   _index = 0;
   _parameter_index = 0;
-  expect('(');
-  while (_signature->char_at(_index) != ')') _parameter_index += parse_type();
-  expect(')');
+  expect(JVM_SIGNATURE_FUNC);
+  while (_signature->char_at(_index) != JVM_SIGNATURE_ENDFUNC) _parameter_index += parse_type();
+  expect(JVM_SIGNATURE_ENDFUNC);
   _parameter_index = 0;
 }
 
@@ -202,36 +202,36 @@
 void SignatureIterator::iterate_returntype() {
   // Ignore parameters
   _index = 0;
-  expect('(');
+  expect(JVM_SIGNATURE_FUNC);
   Symbol* sig = _signature;
   // Need to skip over each type in the signature's argument list until a
   // closing ')' is found., then get the return type.  We cannot just scan
   // for the first ')' because ')' is a legal character in a type name.
-  while (sig->char_at(_index) != ')') {
+  while (sig->char_at(_index) != JVM_SIGNATURE_ENDFUNC) {
     switch(sig->char_at(_index)) {
-      case 'B':
-      case 'C':
-      case 'D':
-      case 'F':
-      case 'I':
-      case 'J':
-      case 'S':
-      case 'Z':
-      case 'V':
+      case JVM_SIGNATURE_BYTE:
+      case JVM_SIGNATURE_CHAR:
+      case JVM_SIGNATURE_DOUBLE:
+      case JVM_SIGNATURE_FLOAT:
+      case JVM_SIGNATURE_INT:
+      case JVM_SIGNATURE_LONG:
+      case JVM_SIGNATURE_SHORT:
+      case JVM_SIGNATURE_BOOLEAN:
+      case JVM_SIGNATURE_VOID:
         {
           _index++;
         }
         break;
-      case 'L':
+      case JVM_SIGNATURE_CLASS:
         {
-          while (sig->char_at(_index++) != ';') ;
+          while (sig->char_at(_index++) != JVM_SIGNATURE_ENDCLASS) ;
         }
         break;
-      case '[':
+      case JVM_SIGNATURE_ARRAY:
         {
-          while (sig->char_at(++_index) == '[') ;
-          if (sig->char_at(_index) == 'L') {
-            while (sig->char_at(_index++) != ';') ;
+          while (sig->char_at(++_index) == JVM_SIGNATURE_ARRAY) ;
+          if (sig->char_at(_index) == JVM_SIGNATURE_CLASS) {
+            while (sig->char_at(_index++) != JVM_SIGNATURE_ENDCLASS) ;
           } else {
             _index++;
           }
@@ -242,7 +242,7 @@
         break;
     }
   }
-  expect(')');
+  expect(JVM_SIGNATURE_ENDFUNC);
   // Parse return type
   _parameter_index = -1;
   parse_type();
@@ -255,9 +255,9 @@
   // Parse parameters
   _parameter_index = 0;
   _index = 0;
-  expect('(');
-  while (_signature->char_at(_index) != ')') _parameter_index += parse_type();
-  expect(')');
+  expect(JVM_SIGNATURE_FUNC);
+  while (_signature->char_at(_index) != JVM_SIGNATURE_ENDFUNC) _parameter_index += parse_type();
+  expect(JVM_SIGNATURE_ENDFUNC);
   // Parse return type
   _parameter_index = -1;
   parse_type();
@@ -289,39 +289,39 @@
 
 void SignatureStream::next_non_primitive(int t) {
   switch (t) {
-    case 'L': {
+    case JVM_SIGNATURE_CLASS: {
       _type = T_OBJECT;
       Symbol* sig = _signature;
-      while (sig->char_at(_end++) != ';');
+      while (sig->char_at(_end++) != JVM_SIGNATURE_ENDCLASS);
       break;
     }
-    case '[': {
+    case JVM_SIGNATURE_ARRAY: {
       _type = T_ARRAY;
       Symbol* sig = _signature;
       char c = sig->char_at(_end);
       while ('0' <= c && c <= '9') c = sig->char_at(_end++);
-      while (sig->char_at(_end) == '[') {
+      while (sig->char_at(_end) == JVM_SIGNATURE_ARRAY) {
         _end++;
         c = sig->char_at(_end);
         while ('0' <= c && c <= '9') c = sig->char_at(_end++);
       }
       switch(sig->char_at(_end)) {
-        case 'B':
-        case 'C':
-        case 'D':
-        case 'F':
-        case 'I':
-        case 'J':
-        case 'S':
-        case 'Z':_end++; break;
+        case JVM_SIGNATURE_BYTE:
+        case JVM_SIGNATURE_CHAR:
+        case JVM_SIGNATURE_DOUBLE:
+        case JVM_SIGNATURE_FLOAT:
+        case JVM_SIGNATURE_INT:
+        case JVM_SIGNATURE_LONG:
+        case JVM_SIGNATURE_SHORT:
+        case JVM_SIGNATURE_BOOLEAN:_end++; break;
         default: {
-          while (sig->char_at(_end++) != ';');
+          while (sig->char_at(_end++) != JVM_SIGNATURE_ENDCLASS);
           break;
         }
       }
       break;
     }
-    case ')': _end++; next(); _at_return_type = true; break;
+    case JVM_SIGNATURE_ENDFUNC: _end++; next(); _at_return_type = true; break;
     default : ShouldNotReachHere();
   }
 }
@@ -341,8 +341,8 @@
   int begin = _begin;
   int end   = _end;
 
-  if (   _signature->char_at(_begin) == 'L'
-      && _signature->char_at(_end-1) == ';') {
+  if (   _signature->char_at(_begin) == JVM_SIGNATURE_CLASS
+      && _signature->char_at(_end-1) == JVM_SIGNATURE_ENDCLASS) {
     begin++;
     end--;
   }
@@ -407,8 +407,8 @@
   int begin = _begin;
   int end   = _end;
 
-  if (   _signature->char_at(_begin) == 'L'
-      && _signature->char_at(_end-1) == ';') {
+  if (   _signature->char_at(_begin) == JVM_SIGNATURE_CLASS
+      && _signature->char_at(_end-1) == JVM_SIGNATURE_ENDCLASS) {
     begin++;
     end--;
   }
@@ -436,9 +436,9 @@
   const char* method_sig = (const char*)sig->bytes();
   ssize_t len = sig->utf8_length();
   ssize_t index = 0;
-  if (method_sig != NULL && len > 1 && method_sig[index] == '(') {
+  if (method_sig != NULL && len > 1 && method_sig[index] == JVM_SIGNATURE_FUNC) {
     ++index;
-    while (index < len && method_sig[index] != ')') {
+    while (index < len && method_sig[index] != JVM_SIGNATURE_ENDFUNC) {
       ssize_t res = is_valid_type(&method_sig[index], len - index);
       if (res == -1) {
         return false;
@@ -446,7 +446,7 @@
         index += res;
       }
     }
-    if (index < len && method_sig[index] == ')') {
+    if (index < len && method_sig[index] == JVM_SIGNATURE_ENDFUNC) {
       // check the return type
       ++index;
       return (is_valid_type(&method_sig[index], len - index) == (len - index));
@@ -469,21 +469,28 @@
   ssize_t index = 0;
 
   // Iterate over any number of array dimensions
-  while (index < limit && type[index] == '[') ++index;
+  while (index < limit && type[index] == JVM_SIGNATURE_ARRAY) ++index;
   if (index >= limit) {
     return -1;
   }
   switch (type[index]) {
-    case 'B': case 'C': case 'D': case 'F': case 'I':
-    case 'J': case 'S': case 'Z': case 'V':
+    case JVM_SIGNATURE_BYTE:
+    case JVM_SIGNATURE_CHAR:
+    case JVM_SIGNATURE_DOUBLE:
+    case JVM_SIGNATURE_FLOAT:
+    case JVM_SIGNATURE_INT:
+    case JVM_SIGNATURE_LONG:
+    case JVM_SIGNATURE_SHORT:
+    case JVM_SIGNATURE_BOOLEAN:
+    case JVM_SIGNATURE_VOID:
       return index + 1;
-    case 'L':
+    case JVM_SIGNATURE_CLASS:
       for (index = index + 1; index < limit; ++index) {
         char c = type[index];
         switch (c) {
-          case ';':
+          case JVM_SIGNATURE_ENDCLASS:
             return index + 1;
-          case '\0': case '.': case '[':
+          case '\0': case JVM_SIGNATURE_DOT: case JVM_SIGNATURE_ARRAY:
             return -1;
           default: ; // fall through
         }
--- a/src/hotspot/share/runtime/signature.hpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/runtime/signature.hpp	Wed Oct 23 14:01:17 2019 -0400
@@ -379,15 +379,15 @@
     _begin = _end;
     int t = sig->char_at(_begin);
     switch (t) {
-      case 'B': _type = T_BYTE;    break;
-      case 'C': _type = T_CHAR;    break;
-      case 'D': _type = T_DOUBLE;  break;
-      case 'F': _type = T_FLOAT;   break;
-      case 'I': _type = T_INT;     break;
-      case 'J': _type = T_LONG;    break;
-      case 'S': _type = T_SHORT;   break;
-      case 'Z': _type = T_BOOLEAN; break;
-      case 'V': _type = T_VOID;    break;
+      case JVM_SIGNATURE_BYTE:    _type = T_BYTE;    break;
+      case JVM_SIGNATURE_CHAR:    _type = T_CHAR;    break;
+      case JVM_SIGNATURE_DOUBLE:  _type = T_DOUBLE;  break;
+      case JVM_SIGNATURE_FLOAT:   _type = T_FLOAT;   break;
+      case JVM_SIGNATURE_INT:     _type = T_INT;     break;
+      case JVM_SIGNATURE_LONG:    _type = T_LONG;    break;
+      case JVM_SIGNATURE_SHORT:   _type = T_SHORT;   break;
+      case JVM_SIGNATURE_BOOLEAN: _type = T_BOOLEAN; break;
+      case JVM_SIGNATURE_VOID:    _type = T_VOID;    break;
       default : next_non_primitive(t);
                 return;
     }
--- a/src/hotspot/share/services/diagnosticArgument.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/services/diagnosticArgument.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -151,7 +151,13 @@
       ResourceMark rm;
 
       char* buf = NEW_RESOURCE_ARRAY(char, len + 1);
+
+PRAGMA_DIAG_PUSH
+PRAGMA_STRINGOP_TRUNCATION_IGNORED
+      // This code can incorrectly cause a "stringop-truncation" warning with gcc
       strncpy(buf, str, len);
+PRAGMA_DIAG_POP
+
       buf[len] = '\0';
       Exceptions::fthrow(THREAD_AND_LOCATION, vmSymbols::java_lang_IllegalArgumentException(),
         "Boolean parsing error in command argument '%s'. Could not parse: %s.\n", _name, buf);
--- a/src/hotspot/share/utilities/compilerWarnings.hpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/utilities/compilerWarnings.hpp	Wed Oct 23 14:01:17 2019 -0400
@@ -62,4 +62,8 @@
 #define PRAGMA_FORMAT_IGNORED
 #endif
 
+#ifndef PRAGMA_STRINGOP_TRUNCATION_IGNORED
+#define PRAGMA_STRINGOP_TRUNCATION_IGNORED
+#endif
+
 #endif // SHARE_UTILITIES_COMPILERWARNINGS_HPP
--- a/src/hotspot/share/utilities/compilerWarnings_gcc.hpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/utilities/compilerWarnings_gcc.hpp	Wed Oct 23 14:01:17 2019 -0400
@@ -50,6 +50,12 @@
 
 #define PRAGMA_FORMAT_IGNORED PRAGMA_DISABLE_GCC_WARNING("-Wformat")
 
+// Disable -Wstringop-truncation which is introduced in GCC 8.
+// https://gcc.gnu.org/gcc-8/changes.html
+#if !defined(__clang_major__) && (__GNUC__ >= 8)
+#define PRAGMA_STRINGOP_TRUNCATION_IGNORED PRAGMA_DISABLE_GCC_WARNING("-Wstringop-truncation")
+#endif
+
 #if defined(__clang_major__) && \
       (__clang_major__ >= 4 || \
       (__clang_major__ >= 3 && __clang_minor__ >= 1)) || \
--- a/src/hotspot/share/utilities/globalDefinitions.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/utilities/globalDefinitions.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2018, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -178,7 +178,16 @@
 
 
 // Map BasicType to signature character
-char type2char_tab[T_CONFLICT+1]={ 0, 0, 0, 0, 'Z', 'C', 'F', 'D', 'B', 'S', 'I', 'J', 'L', '[', 'V', 0, 0, 0, 0, 0};
+char type2char_tab[T_CONFLICT+1] = {
+  0, 0, 0, 0,
+  JVM_SIGNATURE_BOOLEAN, JVM_SIGNATURE_CHAR,
+  JVM_SIGNATURE_FLOAT,   JVM_SIGNATURE_DOUBLE,
+  JVM_SIGNATURE_BYTE,    JVM_SIGNATURE_SHORT,
+  JVM_SIGNATURE_INT,     JVM_SIGNATURE_LONG,
+  JVM_SIGNATURE_CLASS,   JVM_SIGNATURE_ARRAY,
+  JVM_SIGNATURE_VOID,    0,
+  0, 0, 0, 0
+};
 
 // Map BasicType to Java type name
 const char* type2name_tab[T_CONFLICT+1] = {
--- a/src/hotspot/share/utilities/globalDefinitions.hpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/hotspot/share/utilities/globalDefinitions.hpp	Wed Oct 23 14:01:17 2019 -0400
@@ -29,6 +29,9 @@
 #include "utilities/debug.hpp"
 #include "utilities/macros.hpp"
 
+// Get constants like JVM_T_CHAR and JVM_SIGNATURE_INT, before pulling in <jvm.h>.
+#include "classfile_constants.h"
+
 #include COMPILER_HEADER(utilities/globalDefinitions)
 
 // Defaults for macros that might be defined per compiler.
@@ -570,14 +573,22 @@
 
 // NOTE: replicated in SA in vm/agent/sun/jvm/hotspot/runtime/BasicType.java
 enum BasicType {
-  T_BOOLEAN     =  4,
-  T_CHAR        =  5,
-  T_FLOAT       =  6,
-  T_DOUBLE      =  7,
-  T_BYTE        =  8,
-  T_SHORT       =  9,
-  T_INT         = 10,
-  T_LONG        = 11,
+// The values T_BOOLEAN..T_LONG (4..11) are derived from the JVMS.
+  T_BOOLEAN     = JVM_T_BOOLEAN,
+  T_CHAR        = JVM_T_CHAR,
+  T_FLOAT       = JVM_T_FLOAT,
+  T_DOUBLE      = JVM_T_DOUBLE,
+  T_BYTE        = JVM_T_BYTE,
+  T_SHORT       = JVM_T_SHORT,
+  T_INT         = JVM_T_INT,
+  T_LONG        = JVM_T_LONG,
+  // The remaining values are not part of any standard.
+  // T_OBJECT and T_VOID denote two more semantic choices
+  // for method return values.
+  // T_OBJECT and T_ARRAY describe signature syntax.
+  // T_ADDRESS, T_METADATA, T_NARROWOOP, T_NARROWKLASS describe
+  // internal references within the JVM as if they were Java
+  // types in their own right.
   T_OBJECT      = 12,
   T_ARRAY       = 13,
   T_VOID        = 14,
@@ -602,6 +613,10 @@
   return (t == T_BYTE || t == T_SHORT);
 }
 
+inline bool is_double_word_type(BasicType t) {
+  return (t == T_DOUBLE || t == T_LONG);
+}
+
 inline bool is_reference_type(BasicType t) {
   return (t == T_OBJECT || t == T_ARRAY);
 }
@@ -609,17 +624,17 @@
 // Convert a char from a classfile signature to a BasicType
 inline BasicType char2type(char c) {
   switch( c ) {
-  case 'B': return T_BYTE;
-  case 'C': return T_CHAR;
-  case 'D': return T_DOUBLE;
-  case 'F': return T_FLOAT;
-  case 'I': return T_INT;
-  case 'J': return T_LONG;
-  case 'S': return T_SHORT;
-  case 'Z': return T_BOOLEAN;
-  case 'V': return T_VOID;
-  case 'L': return T_OBJECT;
-  case '[': return T_ARRAY;
+  case JVM_SIGNATURE_BYTE:    return T_BYTE;
+  case JVM_SIGNATURE_CHAR:    return T_CHAR;
+  case JVM_SIGNATURE_DOUBLE:  return T_DOUBLE;
+  case JVM_SIGNATURE_FLOAT:   return T_FLOAT;
+  case JVM_SIGNATURE_INT:     return T_INT;
+  case JVM_SIGNATURE_LONG:    return T_LONG;
+  case JVM_SIGNATURE_SHORT:   return T_SHORT;
+  case JVM_SIGNATURE_BOOLEAN: return T_BOOLEAN;
+  case JVM_SIGNATURE_VOID:    return T_VOID;
+  case JVM_SIGNATURE_CLASS:   return T_OBJECT;
+  case JVM_SIGNATURE_ARRAY:   return T_ARRAY;
   }
   return T_ILLEGAL;
 }
--- a/src/java.base/share/classes/java/io/FilePermission.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.base/share/classes/java/io/FilePermission.java	Wed Oct 23 14:01:17 2019 -0400
@@ -367,12 +367,22 @@
             this.mask = mask;
 
             if (cpath.equals("<<ALL FILES>>")) {
+                allFiles = true;
                 directory = true;
                 recursive = true;
                 cpath = "";
                 return;
             }
 
+            // Validate path by platform's default file system
+            try {
+                String name = cpath.endsWith("*") ? cpath.substring(0, cpath.length() - 1) + "-" : cpath;
+                builtInFS.getPath(new File(name).getPath());
+            } catch (InvalidPathException ipe) {
+                invalid = true;
+                return;
+            }
+
             // store only the canonical cpath if possible
             cpath = AccessController.doPrivileged(new PrivilegedAction<>() {
                 public String run() {
@@ -463,13 +473,16 @@
      * <P>
      * The default value of the {@code jdk.io.permissionsUseCanonicalPath}
      * system property is {@code false} in this implementation.
+     * <p>
+     * The value can also be set with a security property using the same name,
+     * but setting a system property will override the security property value.
      *
      * @param path the pathname of the file/directory.
      * @param actions the action string.
      *
-     * @throws IllegalArgumentException
-     *          If actions is {@code null}, empty or contains an action
-     *          other than the specified possible actions.
+     * @throws IllegalArgumentException if actions is {@code null}, empty,
+     *         malformed or contains an action other than the specified
+     *         possible actions
      */
     public FilePermission(String path, String actions) {
         super(path);
@@ -573,19 +586,19 @@
      * @return the effective mask
      */
     boolean impliesIgnoreMask(FilePermission that) {
+        if (this == that) {
+            return true;
+        }
+        if (allFiles) {
+            return true;
+        }
+        if (this.invalid || that.invalid) {
+            return false;
+        }
+        if (that.allFiles) {
+            return false;
+        }
         if (FilePermCompat.nb) {
-            if (this == that) {
-                return true;
-            }
-            if (allFiles) {
-                return true;
-            }
-            if (this.invalid || that.invalid) {
-                return false;
-            }
-            if (that.allFiles) {
-                return false;
-            }
             // Left at least same level of wildness as right
             if ((this.recursive && that.recursive) != that.recursive
                     || (this.directory && that.directory) != that.directory) {
@@ -783,10 +796,10 @@
 
         FilePermission that = (FilePermission) obj;
 
+        if (this.invalid || that.invalid) {
+            return false;
+        }
         if (FilePermCompat.nb) {
-            if (this.invalid || that.invalid) {
-                return false;
-            }
             return (this.mask == that.mask) &&
                     (this.allFiles == that.allFiles) &&
                     this.npath.equals(that.npath) &&
@@ -795,6 +808,7 @@
                     (this.recursive == that.recursive);
         } else {
             return (this.mask == that.mask) &&
+                    (this.allFiles == that.allFiles) &&
                     this.cpath.equals(that.cpath) &&
                     (this.directory == that.directory) &&
                     (this.recursive == that.recursive);
@@ -921,17 +935,18 @@
             }
 
             // make sure we didn't just match the tail of a word
-            // like "ackbarfaccept".  Also, skip to the comma.
+            // like "ackbarfdelete".  Also, skip to the comma.
             boolean seencomma = false;
             while (i >= matchlen && !seencomma) {
-                switch(a[i-matchlen]) {
-                case ',':
-                    seencomma = true;
-                    break;
+                switch (c = a[i-matchlen]) {
                 case ' ': case '\r': case '\n':
                 case '\f': case '\t':
                     break;
                 default:
+                    if (c == ',' && i > matchlen) {
+                        seencomma = true;
+                        break;
+                    }
                     throw new IllegalArgumentException(
                             "invalid permission: " + actions);
                 }
@@ -1127,10 +1142,10 @@
      *
      * @param permission the Permission object to add.
      *
-     * @throws    IllegalArgumentException - if the permission is not a
+     * @throws    IllegalArgumentException   if the permission is not a
      *                                       FilePermission
      *
-     * @throws    SecurityException - if this FilePermissionCollection object
+     * @throws    SecurityException   if this FilePermissionCollection object
      *                                has been marked readonly
      */
     @Override
--- a/src/java.base/share/classes/java/lang/NullPointerException.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.base/share/classes/java/lang/NullPointerException.java	Wed Oct 23 14:01:17 2019 -0400
@@ -70,4 +70,35 @@
     public NullPointerException(String s) {
         super(s);
     }
+
+    /**
+     * Returns the detail message string of this throwable.
+     *
+     * <p> If a non-null message was supplied in a constructor it is
+     * returned. Otherwise, an implementation specific message or
+     * {@code null} is returned.
+     *
+     * @implNote
+     * If no explicit message was passed to the constructor, and as
+     * long as certain internal information is available, a verbose
+     * description of the null reference is returned.
+     * The internal information is not available in deserialized
+     * NullPointerExceptions.
+     *
+     * @return the detail message string, which may be {@code null}.
+     */
+    public String getMessage() {
+        String message = super.getMessage();
+        if (message == null) {
+            return getExtendedNPEMessage();
+        }
+        return message;
+    }
+
+    /**
+     * Get an extended exception message. This returns a string describing
+     * the location and cause of the exception. It returns null for
+     * exceptions where this is not applicable.
+     */
+    private native String getExtendedNPEMessage();
 }
--- a/src/java.base/share/classes/java/lang/String.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.base/share/classes/java/lang/String.java	Wed Oct 23 14:01:17 2019 -0400
@@ -2888,6 +2888,15 @@
     }
 
     /**
+     * {@preview Associated with text blocks, a preview feature of
+     *           the Java language.
+     *
+     *           This method is associated with <i>text blocks</i>, a preview
+     *           feature of the Java language. Programs can only use this
+     *           method when preview features are enabled. Preview features
+     *           may be removed in a future release, or upgraded to permanent
+     *           features of the Java language.}
+     *
      * Returns a string whose value is this string, with incidental
      * {@linkplain Character#isWhitespace(int) white space} removed from
      * the beginning and end of every line.
@@ -2963,10 +2972,9 @@
      *
      * @since 13
      *
-     * @deprecated  This method is associated with text blocks, a preview language feature.
-     *              Text blocks and/or this method may be changed or removed in a future release.
      */
-    @Deprecated(forRemoval=true, since="13")
+    @jdk.internal.PreviewFeature(feature=jdk.internal.PreviewFeature.Feature.TEXT_BLOCKS,
+                                 essentialAPI=true)
     public String stripIndent() {
         int length = length();
         if (length == 0) {
@@ -3005,6 +3013,15 @@
     }
 
     /**
+     * {@preview Associated with text blocks, a preview feature of
+     *           the Java language.
+     *
+     *           This method is associated with <i>text blocks</i>, a preview
+     *           feature of the Java language. Programs can only use this
+     *           method when preview features are enabled. Preview features
+     *           may be removed in a future release, or upgraded to permanent
+     *           features of the Java language.}
+     *
      * Returns a string whose value is this string, with escape sequences
      * translated as if in a string literal.
      * <p>
@@ -3079,11 +3096,9 @@
      * @jls 3.10.7 Escape Sequences
      *
      * @since 13
-     *
-     * @deprecated  This method is associated with text blocks, a preview language feature.
-     *              Text blocks and/or this method may be changed or removed in a future release.
      */
-    @Deprecated(forRemoval=true, since="13")
+    @jdk.internal.PreviewFeature(feature=jdk.internal.PreviewFeature.Feature.TEXT_BLOCKS,
+                                 essentialAPI=true)
     public String translateEscapes() {
         if (isEmpty()) {
             return "";
@@ -3309,6 +3324,15 @@
     }
 
     /**
+     * {@preview Associated with text blocks, a preview feature of
+     *           the Java language.
+     *
+     *           This method is associated with <i>text blocks</i>, a preview
+     *           feature of the Java language. Programs can only use this
+     *           method when preview features are enabled. Preview features
+     *           may be removed in a future release, or upgraded to permanent
+     *           features of the Java language.}
+     *
      * Formats using this string as the format string, and the supplied
      * arguments.
      *
@@ -3324,10 +3348,9 @@
      *
      * @since 13
      *
-     * @deprecated  This method is associated with text blocks, a preview language feature.
-     *              Text blocks and/or this method may be changed or removed in a future release.
      */
-    @Deprecated(forRemoval=true, since="13")
+    @jdk.internal.PreviewFeature(feature=jdk.internal.PreviewFeature.Feature.TEXT_BLOCKS,
+                                 essentialAPI=true)
     public String formatted(Object... args) {
         return new Formatter().format(this, args).toString();
     }
--- a/src/java.base/share/classes/java/lang/System.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.base/share/classes/java/lang/System.java	Wed Oct 23 14:01:17 2019 -0400
@@ -94,10 +94,8 @@
 public final class System {
     /* Register the natives via the static initializer.
      *
-     * VM will invoke the initializeSystemClass method to complete
-     * the initialization for this class separated from clinit.
-     * Note that to use properties set by the VM, see the constraints
-     * described in the initializeSystemClass method.
+     * The VM will invoke the initPhase1 method to complete the initialization
+     * of this class separate from <clinit>.
      */
     private static native void registerNatives();
     static {
--- a/src/java.base/share/classes/java/net/DatagramSocket.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.base/share/classes/java/net/DatagramSocket.java	Wed Oct 23 14:01:17 2019 -0400
@@ -888,14 +888,14 @@
     }
 
     /** Enable/disable SO_TIMEOUT with the specified timeout, in
-     *  milliseconds. With this option set to a non-zero timeout,
+     *  milliseconds. With this option set to a positive timeout value,
      *  a call to receive() for this DatagramSocket
      *  will block for only this amount of time.  If the timeout expires,
      *  a <B>java.net.SocketTimeoutException</B> is raised, though the
-     *  DatagramSocket is still valid.  The option <B>must</B> be enabled
-     *  prior to entering the blocking operation to have effect.  The
-     *  timeout must be {@code > 0}.
-     *  A timeout of zero is interpreted as an infinite timeout.
+     *  DatagramSocket is still valid. A timeout of zero is interpreted
+     *  as an infinite timeout.
+     *  The option <B>must</B> be enabled prior to entering the blocking
+     *  operation to have effect.
      *
      * @param timeout the specified timeout in milliseconds.
      * @throws SocketException if there is an error in the underlying protocol, such as an UDP error.
--- a/src/java.base/share/classes/java/net/InetSocketAddress.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.base/share/classes/java/net/InetSocketAddress.java	Wed Oct 23 14:01:17 2019 -0400
@@ -101,11 +101,20 @@
 
         @Override
         public String toString() {
+
+            String formatted;
+
             if (isUnresolved()) {
-                return hostname + ":" + port;
+                formatted = hostname + "/<unresolved>";
             } else {
-                return addr.toString() + ":" + port;
+                formatted = addr.toString();
+                if (addr instanceof Inet6Address) {
+                    int i = formatted.lastIndexOf("/");
+                    formatted = formatted.substring(0, i + 1)
+                            + "[" + formatted.substring(i + 1) + "]";
+                }
             }
+            return formatted + ":" + port;
         }
 
         @Override
@@ -367,7 +376,9 @@
      * Constructs a string representation of this InetSocketAddress.
      * This String is constructed by calling toString() on the InetAddress
      * and concatenating the port number (with a colon). If the address
-     * is unresolved then the part before the colon will only contain the hostname.
+     * is an IPv6 address, the IPv6 literal is enclosed in square brackets.
+     * If the address is {@linkplain #isUnresolved() unresolved},
+     * {@code <unresolved>} is displayed in place of the address literal.
      *
      * @return  a string representation of this object.
      */
--- a/src/java.base/share/classes/java/net/NetPermission.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.base/share/classes/java/net/NetPermission.java	Wed Oct 23 14:01:17 2019 -0400
@@ -145,6 +145,15 @@
  *   </tr>
  *
  * <tr>
+ *   <th scope="row">setSocketImpl</th>
+ *   <td>The ability to create a sub-class of Socket or ServerSocket with a
+ *   user specified SocketImpl.</td>
+ *   <td>Malicious user-defined SocketImpls can change the behavior of
+ *   Socket and ServerSocket in surprising ways, by virtue of their
+ *   ability to access the protected fields of SocketImpl.</td>
+ *   </tr>
+ *
+ * <tr>
  *   <th scope="row">specifyStreamHandler</th>
  *   <td>The ability
  *   to specify a stream handler when constructing a URL</td>
--- a/src/java.base/share/classes/java/net/ServerSocket.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.base/share/classes/java/net/ServerSocket.java	Wed Oct 23 14:01:17 2019 -0400
@@ -32,6 +32,7 @@
 import java.util.Set;
 import java.util.Collections;
 
+import sun.security.util.SecurityConstants;
 import sun.net.PlatformSocketImpl;
 
 /**
@@ -73,13 +74,25 @@
      *
      * @throws     NullPointerException if impl is {@code null}.
      *
+     * @throws     SecurityException if a security manager is set and
+     *             its {@code checkPermission} method doesn't allow
+     *             {@code NetPermission("setSocketImpl")}.
      * @since 12
      */
     protected ServerSocket(SocketImpl impl) {
         Objects.requireNonNull(impl);
+        checkPermission();
         this.impl = impl;
     }
 
+    private static Void checkPermission() {
+        SecurityManager sm = System.getSecurityManager();
+        if (sm != null) {
+            sm.checkPermission(SecurityConstants.SET_SOCKETIMPL_PERMISSION);
+        }
+        return null;
+    }
+
     /**
      * Creates an unbound server socket.
      *
@@ -736,14 +749,15 @@
 
     /**
      * Enable/disable {@link SocketOptions#SO_TIMEOUT SO_TIMEOUT} with the
-     * specified timeout, in milliseconds.  With this option set to a non-zero
-     * timeout, a call to accept() for this ServerSocket
+     * specified timeout, in milliseconds.  With this option set to a positive
+     * timeout value, a call to accept() for this ServerSocket
      * will block for only this amount of time.  If the timeout expires,
      * a <B>java.net.SocketTimeoutException</B> is raised, though the
-     * ServerSocket is still valid.  The option <B>must</B> be enabled
-     * prior to entering the blocking operation to have effect.  The
-     * timeout must be {@code > 0}.
-     * A timeout of zero is interpreted as an infinite timeout.
+     * ServerSocket is still valid. A timeout of zero is interpreted as an
+     * infinite timeout.
+     * The option <B>must</B> be enabled prior to entering the blocking
+     * operation to have effect.
+     *
      * @param timeout the specified timeout, in milliseconds
      * @throws  SocketException if there is an error in the underlying protocol,
      *          such as a TCP error
--- a/src/java.base/share/classes/java/net/Socket.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.base/share/classes/java/net/Socket.java	Wed Oct 23 14:01:17 2019 -0400
@@ -25,6 +25,8 @@
 
 package java.net;
 
+import sun.security.util.SecurityConstants;
+
 import java.io.InputStream;
 import java.io.OutputStream;
 import java.io.IOException;
@@ -182,12 +184,28 @@
      *
      * @throws    SocketException if there is an error in the underlying protocol,
      * such as a TCP error.
+     *
+     * @throws SecurityException if {@code impl} is non-null and a security manager is set
+     * and its {@code checkPermission} method doesn't allow {@code NetPermission("setSocketImpl")}.
+     *
      * @since   1.1
      */
     protected Socket(SocketImpl impl) throws SocketException {
+        checkPermission(impl);
         this.impl = impl;
     }
 
+    private static Void checkPermission(SocketImpl impl) {
+        if (impl == null) {
+            return null;
+        }
+        SecurityManager sm = System.getSecurityManager();
+        if (sm != null) {
+            sm.checkPermission(SecurityConstants.SET_SOCKETIMPL_PERMISSION);
+        }
+        return null;
+    }
+
     /**
      * Creates a stream socket and connects it to the specified port
      * number on the named host.
@@ -1153,13 +1171,12 @@
     /**
      *  Enable/disable {@link SocketOptions#SO_TIMEOUT SO_TIMEOUT}
      *  with the specified timeout, in milliseconds. With this option set
-     *  to a non-zero timeout, a read() call on the InputStream associated with
+     *  to a positive timeout value, a read() call on the InputStream associated with
      *  this Socket will block for only this amount of time.  If the timeout
      *  expires, a <B>java.net.SocketTimeoutException</B> is raised, though the
-     *  Socket is still valid. The option <B>must</B> be enabled
-     *  prior to entering the blocking operation to have effect. The
-     *  timeout must be {@code > 0}.
-     *  A timeout of zero is interpreted as an infinite timeout.
+     *  Socket is still valid. A timeout of zero is interpreted as an infinite timeout.
+     *  The option <B>must</B> be enabled prior to entering the blocking operation
+     *  to have effect.
      *
      * @param timeout the specified timeout, in milliseconds.
      * @throws  SocketException if there is an error in the underlying protocol,
--- a/src/java.base/share/classes/java/net/SocketPermission.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.base/share/classes/java/net/SocketPermission.java	Wed Oct 23 14:01:17 2019 -0400
@@ -287,6 +287,11 @@
      * @param host the hostname or IP address of the computer, optionally
      * including a colon followed by a port or port range.
      * @param action the action string.
+     *
+     * @throws NullPointerException if any parameters are null
+     * @throws IllegalArgumentException if the format of {@code host} is
+     *         invalid, or if the {@code action} string is empty, malformed, or
+     *         contains an action other than the specified possible actions
      */
     public SocketPermission(String host, String action) {
         super(getHost(host));
@@ -589,14 +594,15 @@
             // like "ackbarfaccept".  Also, skip to the comma.
             boolean seencomma = false;
             while (i >= matchlen && !seencomma) {
-                switch(a[i-matchlen]) {
-                case ',':
-                    seencomma = true;
-                    break;
+                switch (c = a[i-matchlen]) {
                 case ' ': case '\r': case '\n':
                 case '\f': case '\t':
                     break;
                 default:
+                    if (c == ',' && i > matchlen) {
+                        seencomma = true;
+                        break;
+                    }
                     throw new IllegalArgumentException(
                             "invalid permission: " + action);
                 }
@@ -1361,10 +1367,10 @@
      *
      * @param permission the Permission object to add.
      *
-     * @throws    IllegalArgumentException - if the permission is not a
+     * @throws    IllegalArgumentException   if the permission is not a
      *                                       SocketPermission
      *
-     * @throws    SecurityException - if this SocketPermissionCollection object
+     * @throws    SecurityException   if this SocketPermissionCollection object
      *                                has been marked readonly
      */
     @Override
--- a/src/java.base/share/classes/java/net/URL.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.base/share/classes/java/net/URL.java	Wed Oct 23 14:01:17 2019 -0400
@@ -484,6 +484,16 @@
                 throw new MalformedURLException(s);
             }
         }
+        if ("jar".equalsIgnoreCase(protocol)) {
+            if (handler instanceof sun.net.www.protocol.jar.Handler) {
+                // URL.openConnection() would throw a confusing exception
+                // so generate a better exception here instead.
+                String s = ((sun.net.www.protocol.jar.Handler) handler).checkNestedProtocol(file);
+                if (s != null) {
+                    throw new MalformedURLException(s);
+                }
+            }
+        }
     }
 
     /**
--- a/src/java.base/share/classes/java/security/AllPermission.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.base/share/classes/java/security/AllPermission.java	Wed Oct 23 14:01:17 2019 -0400
@@ -178,10 +178,10 @@
      *
      * @param permission the Permission object to add.
      *
-     * @throws    IllegalArgumentException - if the permission is not a
+     * @throws    IllegalArgumentException   if the permission is not an
      *                                       AllPermission
      *
-     * @throws    SecurityException - if this AllPermissionCollection object
+     * @throws    SecurityException   if this AllPermissionCollection object
      *                                has been marked readonly
      */
 
--- a/src/java.base/share/classes/java/security/BasicPermission.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.base/share/classes/java/security/BasicPermission.java	Wed Oct 23 14:01:17 2019 -0400
@@ -349,13 +349,13 @@
      *
      * @param permission the Permission object to add.
      *
-     * @throws    IllegalArgumentException - if the permission is not a
+     * @throws    IllegalArgumentException   if the permission is not a
      *                                       BasicPermission, or if
      *                                       the permission is not of the
      *                                       same Class as the other
      *                                       permissions in this collection.
      *
-     * @throws    SecurityException - if this BasicPermissionCollection object
+     * @throws    SecurityException   if this BasicPermissionCollection object
      *                                has been marked readonly
      */
     @Override
--- a/src/java.base/share/classes/java/security/PermissionCollection.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.base/share/classes/java/security/PermissionCollection.java	Wed Oct 23 14:01:17 2019 -0400
@@ -107,9 +107,9 @@
      *
      * @param permission the Permission object to add.
      *
-     * @throws    SecurityException -  if this PermissionCollection object
+     * @throws    SecurityException    if this PermissionCollection object
      *                                 has been marked readonly
-     * @throws    IllegalArgumentException - if this PermissionCollection
+     * @throws    IllegalArgumentException   if this PermissionCollection
      *                object is a homogeneous collection and the permission
      *                is not of the correct type.
      */
--- a/src/java.base/share/classes/java/security/Policy.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.base/share/classes/java/security/Policy.java	Wed Oct 23 14:01:17 2019 -0400
@@ -837,7 +837,7 @@
          *
          * @param permission the Permission object to add.
          *
-         * @throws    SecurityException - if this PermissionCollection object
+         * @throws    SecurityException   if this PermissionCollection object
          *                                has been marked readonly
          */
         @Override public void add(Permission permission) {
--- a/src/java.base/share/classes/java/util/PropertyPermission.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.base/share/classes/java/util/PropertyPermission.java	Wed Oct 23 14:01:17 2019 -0400
@@ -463,10 +463,10 @@
      *
      * @param permission the Permission object to add.
      *
-     * @throws    IllegalArgumentException - if the permission is not a
+     * @throws    IllegalArgumentException   if the permission is not a
      *                                       PropertyPermission
      *
-     * @throws    SecurityException - if this PropertyPermissionCollection
+     * @throws    SecurityException   if this PropertyPermissionCollection
      *                                object has been marked readonly
      */
     @Override
--- a/src/java.base/share/classes/java/util/concurrent/ArrayBlockingQueue.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.base/share/classes/java/util/concurrent/ArrayBlockingQueue.java	Wed Oct 23 14:01:17 2019 -0400
@@ -100,6 +100,7 @@
     private static final long serialVersionUID = -817911632652898426L;
 
     /** The queued items */
+    @SuppressWarnings("serial") // Conditionally serializable
     final Object[] items;
 
     /** items index for next take, poll, peek or remove */
@@ -120,9 +121,11 @@
     final ReentrantLock lock;
 
     /** Condition for waiting takes */
+    @SuppressWarnings("serial")  // Classes implementing Condition may be serializable.
     private final Condition notEmpty;
 
     /** Condition for waiting puts */
+    @SuppressWarnings("serial")  // Classes implementing Condition may be serializable.
     private final Condition notFull;
 
     /**
--- a/src/java.base/share/classes/java/util/concurrent/ConcurrentHashMap.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.base/share/classes/java/util/concurrent/ConcurrentHashMap.java	Wed Oct 23 14:01:17 2019 -0400
@@ -4584,6 +4584,7 @@
     public static class KeySetView<K,V> extends CollectionView<K,V,K>
         implements Set<K>, java.io.Serializable {
         private static final long serialVersionUID = 7249069246763182397L;
+        @SuppressWarnings("serial") // Conditionally serializable
         private final V value;
         KeySetView(ConcurrentHashMap<K,V> map, V value) {  // non-public
             super(map);
--- a/src/java.base/share/classes/java/util/concurrent/ConcurrentSkipListMap.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.base/share/classes/java/util/concurrent/ConcurrentSkipListMap.java	Wed Oct 23 14:01:17 2019 -0400
@@ -334,6 +334,7 @@
      * nested classes.)
      * @serial
      */
+    @SuppressWarnings("serial") // Conditionally serializable
     final Comparator<? super K> comparator;
 
     /** Lazily initialized topmost index of the skiplist. */
@@ -2375,8 +2376,10 @@
         /** Underlying map */
         final ConcurrentSkipListMap<K,V> m;
         /** lower bound key, or null if from start */
+        @SuppressWarnings("serial") // Conditionally serializable
         private final K lo;
         /** upper bound key, or null if to end */
+        @SuppressWarnings("serial") // Conditionally serializable
         private final K hi;
         /** inclusion flag for lo */
         private final boolean loInclusive;
--- a/src/java.base/share/classes/java/util/concurrent/ConcurrentSkipListSet.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.base/share/classes/java/util/concurrent/ConcurrentSkipListSet.java	Wed Oct 23 14:01:17 2019 -0400
@@ -103,6 +103,7 @@
      * element.  This field is declared final for the sake of thread
      * safety, which entails some ugliness in clone().
      */
+    @SuppressWarnings("serial") // Conditionally serializable
     private final ConcurrentNavigableMap<E,Object> m;
 
     /**
--- a/src/java.base/share/classes/java/util/concurrent/ForkJoinTask.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.base/share/classes/java/util/concurrent/ForkJoinTask.java	Wed Oct 23 14:01:17 2019 -0400
@@ -1374,7 +1374,9 @@
      */
     static final class AdaptedRunnable<T> extends ForkJoinTask<T>
         implements RunnableFuture<T> {
+        @SuppressWarnings("serial") // Conditionally serializable
         final Runnable runnable;
+        @SuppressWarnings("serial") // Conditionally serializable
         T result;
         AdaptedRunnable(Runnable runnable, T result) {
             if (runnable == null) throw new NullPointerException();
@@ -1396,6 +1398,7 @@
      */
     static final class AdaptedRunnableAction extends ForkJoinTask<Void>
         implements RunnableFuture<Void> {
+        @SuppressWarnings("serial") // Conditionally serializable
         final Runnable runnable;
         AdaptedRunnableAction(Runnable runnable) {
             if (runnable == null) throw new NullPointerException();
@@ -1415,6 +1418,7 @@
      * Adapter for Runnables in which failure forces worker exception.
      */
     static final class RunnableExecuteAction extends ForkJoinTask<Void> {
+        @SuppressWarnings("serial") // Conditionally serializable
         final Runnable runnable;
         RunnableExecuteAction(Runnable runnable) {
             if (runnable == null) throw new NullPointerException();
@@ -1434,7 +1438,9 @@
      */
     static final class AdaptedCallable<T> extends ForkJoinTask<T>
         implements RunnableFuture<T> {
+        @SuppressWarnings("serial") // Conditionally serializable
         final Callable<? extends T> callable;
+        @SuppressWarnings("serial") // Conditionally serializable
         T result;
         AdaptedCallable(Callable<? extends T> callable) {
             if (callable == null) throw new NullPointerException();
--- a/src/java.base/share/classes/java/util/concurrent/LinkedBlockingDeque.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.base/share/classes/java/util/concurrent/LinkedBlockingDeque.java	Wed Oct 23 14:01:17 2019 -0400
@@ -159,9 +159,11 @@
     final ReentrantLock lock = new ReentrantLock();
 
     /** Condition for waiting takes */
+    @SuppressWarnings("serial") // Classes implementing Condition may be serializable.
     private final Condition notEmpty = lock.newCondition();
 
     /** Condition for waiting puts */
+    @SuppressWarnings("serial") // Classes implementing Condition may be serializable.
     private final Condition notFull = lock.newCondition();
 
     /**
--- a/src/java.base/share/classes/java/util/concurrent/LinkedBlockingQueue.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.base/share/classes/java/util/concurrent/LinkedBlockingQueue.java	Wed Oct 23 14:01:17 2019 -0400
@@ -156,12 +156,14 @@
     private final ReentrantLock takeLock = new ReentrantLock();
 
     /** Wait queue for waiting takes */
+    @SuppressWarnings("serial") // Classes implementing Condition may be serializable.
     private final Condition notEmpty = takeLock.newCondition();
 
     /** Lock held by put, offer, etc */
     private final ReentrantLock putLock = new ReentrantLock();
 
     /** Wait queue for waiting puts */
+    @SuppressWarnings("serial") // Classes implementing Condition may be serializable.
     private final Condition notFull = putLock.newCondition();
 
     /**
--- a/src/java.base/share/classes/java/util/concurrent/PriorityBlockingQueue.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.base/share/classes/java/util/concurrent/PriorityBlockingQueue.java	Wed Oct 23 14:01:17 2019 -0400
@@ -173,6 +173,7 @@
     /**
      * Condition for blocking when empty.
      */
+    @SuppressWarnings("serial") // Classes implementing Condition may be serializable.
     private final Condition notEmpty = lock.newCondition();
 
     /**
--- a/src/java.base/share/classes/java/util/concurrent/RecursiveTask.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.base/share/classes/java/util/concurrent/RecursiveTask.java	Wed Oct 23 14:01:17 2019 -0400
@@ -71,6 +71,7 @@
     /**
      * The result of the computation.
      */
+    @SuppressWarnings("serial") // Conditionally serializable
     V result;
 
     /**
--- a/src/java.base/share/classes/java/util/concurrent/ThreadPoolExecutor.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.base/share/classes/java/util/concurrent/ThreadPoolExecutor.java	Wed Oct 23 14:01:17 2019 -0400
@@ -604,8 +604,10 @@
         private static final long serialVersionUID = 6138294804551838833L;
 
         /** Thread this worker is running in.  Null if factory fails. */
+        @SuppressWarnings("serial") // Unlikely to be serializable
         final Thread thread;
         /** Initial task to run.  Possibly null. */
+        @SuppressWarnings("serial") // Not statically typed as Serializable
         Runnable firstTask;
         /** Per-thread task counter */
         volatile long completedTasks;
--- a/src/java.base/share/classes/java/util/concurrent/atomic/AtomicReference.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.base/share/classes/java/util/concurrent/atomic/AtomicReference.java	Wed Oct 23 14:01:17 2019 -0400
@@ -60,6 +60,7 @@
         }
     }
 
+    @SuppressWarnings("serial") // Conditionally serializable
     private volatile V value;
 
     /**
--- a/src/java.base/share/classes/java/util/concurrent/atomic/AtomicReferenceArray.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.base/share/classes/java/util/concurrent/atomic/AtomicReferenceArray.java	Wed Oct 23 14:01:17 2019 -0400
@@ -55,6 +55,7 @@
     private static final long serialVersionUID = -6209656149925076980L;
     private static final VarHandle AA
         = MethodHandles.arrayElementVarHandle(Object[].class);
+    @SuppressWarnings("serial") // Conditionally serializable
     private final Object[] array; // must have exact type Object[]
 
     /**
--- a/src/java.base/share/classes/java/util/concurrent/atomic/DoubleAccumulator.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.base/share/classes/java/util/concurrent/atomic/DoubleAccumulator.java	Wed Oct 23 14:01:17 2019 -0400
@@ -84,6 +84,7 @@
 public class DoubleAccumulator extends Striped64 implements Serializable {
     private static final long serialVersionUID = 7249069246863182397L;
 
+    @SuppressWarnings("serial") // Not statically typed as Serializable
     private final DoubleBinaryOperator function;
     private final long identity; // use long representation
 
@@ -245,6 +246,7 @@
          * The function used for updates.
          * @serial
          */
+        @SuppressWarnings("serial") // Not statically typed as Serializable
         private final DoubleBinaryOperator function;
 
         /**
--- a/src/java.base/share/classes/java/util/concurrent/atomic/LongAccumulator.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.base/share/classes/java/util/concurrent/atomic/LongAccumulator.java	Wed Oct 23 14:01:17 2019 -0400
@@ -82,6 +82,7 @@
 public class LongAccumulator extends Striped64 implements Serializable {
     private static final long serialVersionUID = 7249069246863182397L;
 
+    @SuppressWarnings("serial") // Not statically typed as Serializable
     private final LongBinaryOperator function;
     private final long identity;
 
@@ -239,6 +240,7 @@
          * The function used for updates.
          * @serial
          */
+        @SuppressWarnings("serial") // Not statically typed as Serializable
         private final LongBinaryOperator function;
 
         /**
--- a/src/java.base/share/classes/java/util/regex/Pattern.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.base/share/classes/java/util/regex/Pattern.java	Wed Oct 23 14:01:17 2019 -0400
@@ -1427,7 +1427,11 @@
         localTCNCount = 0;
 
         if (!pattern.isEmpty()) {
-            compile();
+            try {
+                compile();
+            } catch (StackOverflowError soe) {
+                throw error("Stack overflow during pattern compilation");
+            }
         } else {
             root = new Start(lastAccept);
             matchRoot = lastAccept;
@@ -1965,6 +1969,10 @@
         int ch = temp[cursor++];
         while (ch != 0 && !isLineSeparator(ch))
             ch = temp[cursor++];
+        if (ch == 0 && cursor > patternLength) {
+            cursor = patternLength;
+            ch = temp[cursor++];
+        }
         return ch;
     }
 
@@ -1975,6 +1983,10 @@
         int ch = temp[++cursor];
         while (ch != 0 && !isLineSeparator(ch))
             ch = temp[++cursor];
+        if (ch == 0 && cursor > patternLength) {
+            cursor = patternLength;
+            ch = temp[cursor];
+        }
         return ch;
     }
 
@@ -3415,9 +3427,10 @@
     private int N() {
         if (read() == '{') {
             int i = cursor;
-            while (cursor < patternLength && read() != '}') {}
-            if (cursor > patternLength)
-                throw error("Unclosed character name escape sequence");
+            while (read() != '}') {
+                if (cursor >= patternLength)
+                    throw error("Unclosed character name escape sequence");
+            }
             String name = new String(temp, i, cursor - i - 1);
             try {
                 return Character.codePointOf(name);
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/java.base/share/classes/jdk/internal/PreviewFeature.java	Wed Oct 23 14:01:17 2019 -0400
@@ -0,0 +1,60 @@
+/*
+ * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package jdk.internal;
+
+import java.lang.annotation.*;
+
+/**
+ * Indicates the API declaration in question is associated with a
+ * <em>preview feature</em>. See JEP 12: "Preview Language and VM
+ * Features" (http://openjdk.java.net/jeps/12).
+ * @since 14
+ */
+// Match the meaningful targets of java.lang.Deprecated, omit local
+// variables and parameter declarations
+@Target({ElementType.METHOD,
+         ElementType.CONSTRUCTOR,
+         ElementType.FIELD,
+         ElementType.PACKAGE,
+         ElementType.MODULE,
+         ElementType.TYPE})
+ // CLASS retention will hopefully be sufficient for the purposes at hand
+@Retention(RetentionPolicy.CLASS)
+// *Not* @Documented
+public @interface PreviewFeature {
+    /**
+     * Name of the preview feature the annotated API is associated
+     * with.
+     */
+    public Feature feature();
+
+    public boolean essentialAPI() default false;
+
+    public enum Feature {
+        SWITCH_EXPRESSIONS,
+        TEXT_BLOCKS;
+    }
+}
--- a/src/java.base/share/classes/module-info.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.base/share/classes/module-info.java	Wed Oct 23 14:01:17 2019 -0400
@@ -135,7 +135,8 @@
     exports com.sun.security.ntlm to
         java.security.sasl;
     exports jdk.internal to
-        jdk.jfr;
+        jdk.jfr,
+        jdk.compiler;
     exports jdk.internal.access to
         java.desktop,
         java.logging,
--- a/src/java.base/share/classes/sun/net/www/protocol/http/HttpURLConnection.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.base/share/classes/sun/net/www/protocol/http/HttpURLConnection.java	Wed Oct 23 14:01:17 2019 -0400
@@ -2171,6 +2171,10 @@
             } while (retryTunnel < maxRedirects);
 
             if (retryTunnel >= maxRedirects || (respCode != HTTP_OK)) {
+                if (respCode != HTTP_PROXY_AUTH) {
+                    // remove all but authenticate responses
+                    responses.reset();
+                }
                 throw new IOException("Unable to tunnel through proxy."+
                                       " Proxy returns \"" +
                                       statusLine + "\"");
--- a/src/java.base/share/classes/sun/net/www/protocol/jar/Handler.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.base/share/classes/sun/net/www/protocol/jar/Handler.java	Wed Oct 23 14:01:17 2019 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -121,6 +121,13 @@
         return h;
     }
 
+    public String checkNestedProtocol(String spec) {
+        if (spec.regionMatches(true, 0, "jar:", 0, 4)) {
+            return "Nested JAR URLs are not supported";
+        } else {
+            return null;
+        }
+    }
 
     @Override
     @SuppressWarnings("deprecation")
@@ -146,6 +153,12 @@
                 : false;
         spec = spec.substring(start, limit);
 
+        String exceptionMessage = checkNestedProtocol(spec);
+        if (exceptionMessage != null) {
+            // NPE will be transformed into MalformedURLException by the caller
+            throw new NullPointerException(exceptionMessage);
+        }
+
         if (absoluteSpec) {
             file = parseAbsoluteSpec(spec);
         } else if (!refOnly) {
--- a/src/java.base/share/classes/sun/nio/ch/ServerSocketAdaptor.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.base/share/classes/sun/nio/ch/ServerSocketAdaptor.java	Wed Oct 23 14:01:17 2019 -0400
@@ -37,6 +37,9 @@
 import java.nio.channels.IllegalBlockingModeException;
 import java.nio.channels.ServerSocketChannel;
 import java.nio.channels.SocketChannel;
+import java.security.AccessController;
+import java.security.PrivilegedActionException;
+import java.security.PrivilegedExceptionAction;
 import java.util.Set;
 
 import static java.util.concurrent.TimeUnit.MILLISECONDS;
@@ -59,7 +62,12 @@
     private volatile int timeout;
 
     static ServerSocket create(ServerSocketChannelImpl ssc) {
-        return new ServerSocketAdaptor(ssc);
+        PrivilegedExceptionAction<ServerSocket> pa = () -> new ServerSocketAdaptor(ssc);
+        try {
+            return AccessController.doPrivileged(pa);
+        } catch (PrivilegedActionException pae) {
+            throw new InternalError("Should not reach here", pae);
+        }
     }
 
     private ServerSocketAdaptor(ServerSocketChannelImpl ssc) {
--- a/src/java.base/share/classes/sun/nio/ch/SocketAdaptor.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.base/share/classes/sun/nio/ch/SocketAdaptor.java	Wed Oct 23 14:01:17 2019 -0400
@@ -36,6 +36,9 @@
 import java.net.SocketOption;
 import java.net.StandardSocketOptions;
 import java.nio.channels.SocketChannel;
+import java.security.AccessController;
+import java.security.PrivilegedActionException;
+import java.security.PrivilegedExceptionAction;
 import java.util.Set;
 
 import static java.util.concurrent.TimeUnit.MILLISECONDS;
@@ -61,10 +64,11 @@
     }
 
     static Socket create(SocketChannelImpl sc) {
+        PrivilegedExceptionAction<Socket> pa = () -> new SocketAdaptor(sc);
         try {
-            return new SocketAdaptor(sc);
-        } catch (SocketException e) {
-            throw new InternalError("Should not reach here");
+            return AccessController.doPrivileged(pa);
+        } catch (PrivilegedActionException pae) {
+            throw new InternalError("Should not reach here", pae);
         }
     }
 
--- a/src/java.base/share/classes/sun/security/ssl/SupportedGroupsExtension.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.base/share/classes/sun/security/ssl/SupportedGroupsExtension.java	Wed Oct 23 14:01:17 2019 -0400
@@ -201,7 +201,7 @@
                         // Primary XDH (RFC 7748) curves
                         NamedGroup.X25519,
 
-                        // Primary NIST curves (e.g. used in TLSv1.3)
+                        // Primary NIST Suite B curves
                         NamedGroup.SECP256_R1,
                         NamedGroup.SECP384_R1,
                         NamedGroup.SECP521_R1,
@@ -209,17 +209,6 @@
                         // Secondary XDH curves
                         NamedGroup.X448,
 
-                        // Secondary NIST curves
-                        NamedGroup.SECT283_K1,
-                        NamedGroup.SECT283_R1,
-                        NamedGroup.SECT409_K1,
-                        NamedGroup.SECT409_R1,
-                        NamedGroup.SECT571_K1,
-                        NamedGroup.SECT571_R1,
-
-                        // non-NIST curves
-                        NamedGroup.SECP256_K1,
-
                         // FFDHE (RFC 7919)
                         NamedGroup.FFDHE_2048,
                         NamedGroup.FFDHE_3072,
--- a/src/java.base/share/classes/sun/security/util/FilePermCompat.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.base/share/classes/sun/security/util/FilePermCompat.java	Wed Oct 23 14:01:17 2019 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016, 2018, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2016, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -42,8 +42,11 @@
     public static final boolean compat;
 
     static {
-        String flag = GetPropertyAction.privilegedGetProperty(
-                "jdk.io.permissionsUseCanonicalPath", "false");
+        String flag = SecurityProperties.privilegedGetOverridable(
+                "jdk.io.permissionsUseCanonicalPath");
+        if (flag == null) {
+            flag = "false";
+        }
         switch (flag) {
             case "true":
                 nb = false;
--- a/src/java.base/share/classes/sun/security/util/SecurityConstants.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.base/share/classes/sun/security/util/SecurityConstants.java	Wed Oct 23 14:01:17 2019 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2003, 2016, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2003, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -97,6 +97,10 @@
     public static final NetPermission GET_RESPONSECACHE_PERMISSION =
        new NetPermission("getResponseCache");
 
+    // java.net.ServerSocket, java.net.Socket
+    public static final NetPermission SET_SOCKETIMPL_PERMISSION =
+        new NetPermission("setSocketImpl");
+
     // java.lang.SecurityManager, sun.applet.AppletPanel
     public static final RuntimePermission CREATE_CLASSLOADER_PERMISSION =
         new RuntimePermission("createClassLoader");
--- a/src/java.base/share/conf/security/java.security	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.base/share/conf/security/java.security	Wed Oct 23 14:01:17 2019 -0400
@@ -1213,3 +1213,51 @@
 # if this property is not enabled.
 #
 jdk.security.caDistrustPolicies=SYMANTEC_TLS
+
+#
+# FilePermission path canonicalization
+#
+# This security property dictates how the path argument is processed and stored
+# while constructing a FilePermission object. If the value is set to true, the
+# path argument is canonicalized and FilePermission methods (such as implies,
+# equals, and hashCode) are implemented based on this canonicalized result.
+# Otherwise, the path argument is not canonicalized and FilePermission methods are
+# implemented based on the original input. See the implementation note of the
+# FilePermission class for more details.
+#
+# If a system property of the same name is also specified, it supersedes the
+# security property value defined here.
+#
+# The default value for this property is false.
+#
+jdk.io.permissionsUseCanonicalPath=false
+
+
+#
+# Policies for the proxy_impersonator Kerberos ccache configuration entry
+#
+# The proxy_impersonator ccache configuration entry indicates that the ccache
+# is a synthetic delegated credential for use with S4U2Proxy by an intermediate
+# server. The ccache file should also contain the TGT of this server and
+# an evidence ticket from the default principal of the ccache to this server.
+#
+# This security property determines how Java uses this configuration entry.
+# There are 3 possible values:
+#
+#  no-impersonate     - Ignore this configuration entry, and always act as
+#                       the owner of the TGT (if it exists).
+#
+#  try-impersonate    - Try impersonation when this configuration entry exists.
+#                       If no matching TGT or evidence ticket is found,
+#                       fallback to no-impersonate.
+#
+#  always-impersonate - Always impersonate when this configuration entry exists.
+#                       If no matching TGT or evidence ticket is found,
+#                       no initial credential is read from the ccache.
+#
+# The default value is "always-impersonate".
+#
+# If a system property of the same name is also specified, it supersedes the
+# security property value defined here.
+#
+#jdk.security.krb5.default.initiate.credential=always-impersonate
--- a/src/java.base/share/native/include/classfile_constants.h.template	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.base/share/native/include/classfile_constants.h.template	Wed Oct 23 14:01:17 2019 -0400
@@ -144,6 +144,10 @@
 /* Type signatures */
 
 enum {
+    JVM_SIGNATURE_SLASH         = '/',
+    JVM_SIGNATURE_DOT           = '.',
+    JVM_SIGNATURE_SPECIAL       = '<',
+    JVM_SIGNATURE_ENDSPECIAL    = '>',
     JVM_SIGNATURE_ARRAY         = '[',
     JVM_SIGNATURE_BYTE          = 'B',
     JVM_SIGNATURE_CHAR          = 'C',
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/java.base/share/native/libjava/NullPointerException.c	Wed Oct 23 14:01:17 2019 -0400
@@ -0,0 +1,36 @@
+/*
+ * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2019 SAP SE. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+#include "jni.h"
+#include "jvm.h"
+
+#include "java_lang_NullPointerException.h"
+
+JNIEXPORT jstring JNICALL
+Java_java_lang_NullPointerException_getExtendedNPEMessage(JNIEnv *env, jobject throwable)
+{
+    return JVM_GetExtendedNPEMessage(env, throwable);
+}
--- a/src/java.base/share/native/libjava/jni_util.c	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.base/share/native/libjava/jni_util.c	Wed Oct 23 14:01:17 2019 -0400
@@ -791,6 +791,13 @@
     CHECK_NULL(String_value_ID);
 }
 
+// This alias is used for compatibility with 32 bit Windows
+JNIEXPORT jstring
+NewStringPlatform(JNIEnv *env, const char *str)
+{
+    return JNU_NewStringPlatform(env, str);
+}
+
 JNIEXPORT jstring JNICALL
 JNU_NewStringPlatform(JNIEnv *env, const char *str)
 {
--- a/src/java.base/share/native/libjava/jni_util.h	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.base/share/native/libjava/jni_util.h	Wed Oct 23 14:01:17 2019 -0400
@@ -93,6 +93,9 @@
 JNU_ThrowIOExceptionWithLastError(JNIEnv *env, const char *defaultDetail);
 
 /* Convert between Java strings and i18n C strings */
+JNIEXPORT jstring
+NewStringPlatform(JNIEnv *env, const char *str);
+
 JNIEXPORT const char *
 GetStringPlatformChars(JNIEnv *env, jstring jstr, jboolean *isCopy);
 
--- a/src/java.base/windows/classes/java/lang/ProcessImpl.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.base/windows/classes/java/lang/ProcessImpl.java	Wed Oct 23 14:01:17 2019 -0400
@@ -38,6 +38,7 @@
 import java.security.AccessController;
 import java.security.PrivilegedAction;
 import java.util.ArrayList;
+import java.util.Locale;
 import java.util.concurrent.CompletableFuture;
 import java.util.concurrent.TimeUnit;
 import java.util.regex.Matcher;
@@ -46,6 +47,8 @@
 import jdk.internal.access.JavaIOFileDescriptorAccess;
 import jdk.internal.access.SharedSecrets;
 import jdk.internal.ref.CleanerFactory;
+import sun.security.action.GetBooleanAction;
+import sun.security.action.GetPropertyAction;
 
 /* This class is for the exclusive use of ProcessBuilder.start() to
  * create new processes.
@@ -209,12 +212,15 @@
 
     private static final int VERIFICATION_CMD_BAT = 0;
     private static final int VERIFICATION_WIN32 = 1;
-    private static final int VERIFICATION_LEGACY = 2;
+    private static final int VERIFICATION_WIN32_SAFE = 2; // inside quotes not allowed
+    private static final int VERIFICATION_LEGACY = 3;
+    // See Command shell overview for documentation of special characters.
+    // https://docs.microsoft.com/en-us/previous-versions/windows/it-pro/windows-xp/bb490954(v=technet.10)
     private static final char ESCAPE_VERIFICATION[][] = {
         // We guarantee the only command file execution for implicit [cmd.exe] run.
         //    http://technet.microsoft.com/en-us/library/bb490954.aspx
         {' ', '\t', '<', '>', '&', '|', '^'},
-
+        {' ', '\t', '<', '>'},
         {' ', '\t', '<', '>'},
         {' ', '\t'}
     };
@@ -231,8 +237,25 @@
             cmdbuf.append(' ');
             String s = cmd[i];
             if (needsEscaping(verificationType, s)) {
-                cmdbuf.append('"').append(s);
+                cmdbuf.append('"');
 
+                if (verificationType == VERIFICATION_WIN32_SAFE) {
+                    // Insert the argument, adding '\' to quote any interior quotes
+                    int length = s.length();
+                    for (int j = 0; j < length; j++) {
+                        char c = s.charAt(j);
+                        if (c == DOUBLEQUOTE) {
+                            int count = countLeadingBackslash(verificationType, s, j);
+                            while (count-- > 0) {
+                                cmdbuf.append(BACKSLASH);   // double the number of backslashes
+                            }
+                            cmdbuf.append(BACKSLASH);       // backslash to quote the quote
+                        }
+                        cmdbuf.append(c);
+                    }
+                } else {
+                    cmdbuf.append(s);
+                }
                 // The code protects the [java.exe] and console command line
                 // parser, that interprets the [\"] combination as an escape
                 // sequence for the ["] char.
@@ -245,8 +268,9 @@
                 // command line parser. The case of the [""] tail escape
                 // sequence could not be realized due to the argument validation
                 // procedure.
-                if ((verificationType != VERIFICATION_CMD_BAT) && s.endsWith("\\")) {
-                    cmdbuf.append('\\');
+                int count = countLeadingBackslash(verificationType, s, s.length());
+                while (count-- > 0) {
+                    cmdbuf.append(BACKSLASH);   // double the number of backslashes
                 }
                 cmdbuf.append('"');
             } else {
@@ -256,26 +280,16 @@
         return cmdbuf.toString();
     }
 
-    private static boolean isQuoted(boolean noQuotesInside, String arg,
-            String errorMessage) {
-        int lastPos = arg.length() - 1;
-        if (lastPos >=1 && arg.charAt(0) == '"' && arg.charAt(lastPos) == '"') {
-            // The argument has already been quoted.
-            if (noQuotesInside) {
-                if (arg.indexOf('"', 1) != lastPos) {
-                    // There is ["] inside.
-                    throw new IllegalArgumentException(errorMessage);
-                }
-            }
-            return true;
-        }
-        if (noQuotesInside) {
-            if (arg.indexOf('"') >= 0) {
-                // There is ["] inside.
-                throw new IllegalArgumentException(errorMessage);
-            }
-        }
-        return false;
+    /**
+     * Return the argument without quotes (1st and last) if present, else the arg.
+     * @param str a string
+     * @return the string without 1st and last quotes
+     */
+    private static String unQuote(String str) {
+        int len = str.length();
+        return (len >= 2 && str.charAt(0) == DOUBLEQUOTE && str.charAt(len - 1) == DOUBLEQUOTE)
+                ? str.substring(1, len - 1)
+                : str;
     }
 
     private static boolean needsEscaping(int verificationType, String arg) {
@@ -286,9 +300,26 @@
 
         // For [.exe] or [.com] file the unpaired/internal ["]
         // in the argument is not a problem.
-        boolean argIsQuoted = isQuoted(
-            (verificationType == VERIFICATION_CMD_BAT),
-            arg, "Argument has embedded quote, use the explicit CMD.EXE call.");
+        String unquotedArg = unQuote(arg);
+        boolean argIsQuoted = !arg.equals(unquotedArg);
+        boolean embeddedQuote = unquotedArg.indexOf(DOUBLEQUOTE) >= 0;
+
+        switch (verificationType) {
+            case VERIFICATION_CMD_BAT:
+                if (embeddedQuote) {
+                    throw new IllegalArgumentException("Argument has embedded quote, " +
+                            "use the explicit CMD.EXE call.");
+                }
+                break;  // break determine whether to quote
+            case VERIFICATION_WIN32_SAFE:
+                if (argIsQuoted && embeddedQuote)  {
+                    throw new IllegalArgumentException("Malformed argument has embedded quote: "
+                            + unquotedArg);
+                }
+                break;
+            default:
+                break;
+        }
 
         if (!argIsQuoted) {
             char testEscape[] = ESCAPE_VERIFICATION[verificationType];
@@ -304,13 +335,13 @@
     private static String getExecutablePath(String path)
         throws IOException
     {
-        boolean pathIsQuoted = isQuoted(true, path,
-                "Executable name has embedded quote, split the arguments");
-
+        String name = unQuote(path);
+        if (name.indexOf(DOUBLEQUOTE) >= 0) {
+            throw new IllegalArgumentException("Executable name has embedded quote, " +
+                    "split the arguments: " + name);
+        }
         // Win32 CreateProcess requires path to be normalized
-        File fileToRun = new File(pathIsQuoted
-            ? path.substring(1, path.length() - 1)
-            : path);
+        File fileToRun = new File(name);
 
         // From the [CreateProcess] function documentation:
         //
@@ -325,13 +356,26 @@
         // sequence:..."
         //
         // In practice ANY non-existent path is extended by [.exe] extension
-        // in the [CreateProcess] funcion with the only exception:
+        // in the [CreateProcess] function with the only exception:
         // the path ends by (.)
 
         return fileToRun.getPath();
     }
 
+    /**
+     * An executable is any program that is an EXE or does not have an extension
+     * and the Windows createProcess will be looking for .exe.
+     * The comparison is case insensitive based on the name.
+     * @param executablePath the executable file
+     * @return true if the path ends in .exe or does not have an extension.
+     */
+    private boolean isExe(String executablePath) {
+        File file = new File(executablePath);
+        String upName = file.getName().toUpperCase(Locale.ROOT);
+        return (upName.endsWith(".EXE") || upName.indexOf('.') < 0);
+    }
 
+    // Old version that can be bypassed
     private boolean isShellFile(String executablePath) {
         String upPath = executablePath.toUpperCase();
         return (upPath.endsWith(".CMD") || upPath.endsWith(".BAT"));
@@ -342,6 +386,21 @@
         return argbuf.append('"').append(arg).append('"').toString();
     }
 
+    // Count backslashes before start index of string.
+    // .bat files don't include backslashes as part of the quote
+    private static int countLeadingBackslash(int verificationType,
+                                             CharSequence input, int start) {
+        if (verificationType == VERIFICATION_CMD_BAT)
+            return 0;
+        int j;
+        for (j = start - 1; j >= 0 && input.charAt(j) == BACKSLASH; j--) {
+            // just scanning backwards
+        }
+        return (start - 1) - j;  // number of BACKSLASHES
+    }
+
+    private static final char DOUBLEQUOTE = '\"';
+    private static final char BACKSLASH = '\\';
 
     private final long handle;
     private final ProcessHandle processHandle;
@@ -358,15 +417,13 @@
         throws IOException
     {
         String cmdstr;
-        SecurityManager security = System.getSecurityManager();
-        boolean allowAmbiguousCommands = false;
-        if (security == null) {
-            allowAmbiguousCommands = true;
-            String value = System.getProperty("jdk.lang.Process.allowAmbiguousCommands");
-            if (value != null)
-                allowAmbiguousCommands = !"false".equalsIgnoreCase(value);
-        }
-        if (allowAmbiguousCommands) {
+        final SecurityManager security = System.getSecurityManager();
+        final String value = GetPropertyAction.
+                privilegedGetProperty("jdk.lang.Process.allowAmbiguousCommands",
+                        (security == null ? "true" : "false"));
+        final boolean allowAmbiguousCommands = !"false".equalsIgnoreCase(value);
+
+        if (allowAmbiguousCommands && security == null) {
             // Legacy mode.
 
             // Normalize path if possible.
@@ -413,11 +470,12 @@
             // Quotation protects from interpretation of the [path] argument as
             // start of longer path with spaces. Quotation has no influence to
             // [.exe] extension heuristic.
+            boolean isShell = allowAmbiguousCommands ? isShellFile(executablePath)
+                    : !isExe(executablePath);
             cmdstr = createCommandLine(
-                    // We need the extended verification procedure for CMD files.
-                    isShellFile(executablePath)
-                        ? VERIFICATION_CMD_BAT
-                        : VERIFICATION_WIN32,
+                    // We need the extended verification procedures
+                    isShell ? VERIFICATION_CMD_BAT
+                            : (allowAmbiguousCommands ? VERIFICATION_WIN32 : VERIFICATION_WIN32_SAFE),
                     quoteString(executablePath),
                     cmd);
         }
--- a/src/java.desktop/share/classes/java/awt/Font.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.desktop/share/classes/java/awt/Font.java	Wed Oct 23 14:01:17 2019 -0400
@@ -1929,6 +1929,7 @@
         // value is the default.
 
         if (fRequestedAttributes != null) {
+            try {
             values = getAttributeValues(); // init
             AttributeValues extras =
                 AttributeValues.fromSerializableHashtable(fRequestedAttributes);
@@ -1938,10 +1939,13 @@
             values = getAttributeValues().merge(extras);
             this.nonIdentityTx = values.anyNonDefault(EXTRA_MASK);
             this.hasLayoutAttributes =  values.anyNonDefault(LAYOUT_MASK);
-
+            } catch (Throwable t) {
+                throw new IOException(t);
+            } finally {
             fRequestedAttributes = null; // don't need it any more
         }
     }
+    }
 
     /**
      * Returns the number of glyphs in this {@code Font}. Glyph codes
--- a/src/java.desktop/share/classes/sun/font/CMap.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.desktop/share/classes/sun/font/CMap.java	Wed Oct 23 14:01:17 2019 -0400
@@ -130,7 +130,7 @@
 
     static final char noSuchChar = (char)0xfffd;
     static final int SHORTMASK = 0x0000ffff;
-    static final int INTMASK   = 0xffffffff;
+    static final int INTMASK   = 0x7fffffff;
 
     static final char[][] converterMaps = new char[7][];
 
@@ -919,7 +919,11 @@
 
              bbuffer.position(12);
              bbuffer.get(is32);
-             nGroups = bbuffer.getInt();
+             nGroups = bbuffer.getInt() & INTMASK;
+             // A map group record is three uint32's making for 12 bytes total
+             if (bbuffer.remaining() < (12 * (long)nGroups)) {
+                 throw new RuntimeException("Format 8 table exceeded");
+             }
              startCharCode = new int[nGroups];
              endCharCode   = new int[nGroups];
              startGlyphID  = new int[nGroups];
@@ -947,9 +951,13 @@
 
          CMapFormat10(ByteBuffer bbuffer, int offset, char[] xlat) {
 
+             bbuffer.position(offset+12);
              firstCode = bbuffer.getInt() & INTMASK;
              entryCount = bbuffer.getInt() & INTMASK;
-             bbuffer.position(offset+20);
+             // each glyph is a uint16, so 2 bytes per value.
+             if (bbuffer.remaining() < (2 * (long)entryCount)) {
+                 throw new RuntimeException("Format 10 table exceeded");
+             }
              CharBuffer buffer = bbuffer.asCharBuffer();
              glyphIdArray = new char[entryCount];
              for (int i=0; i< entryCount; i++) {
@@ -989,11 +997,15 @@
                 throw new RuntimeException("xlat array for cmap fmt=12");
             }
 
-            numGroups = buffer.getInt(offset+12);
+            buffer.position(offset+12);
+            numGroups = buffer.getInt() & INTMASK;
+            // A map group record is three uint32's making for 12 bytes total
+            if (buffer.remaining() < (12 * (long)numGroups)) {
+                throw new RuntimeException("Format 12 table exceeded");
+            }
             startCharCode = new long[numGroups];
             endCharCode = new long[numGroups];
             startGlyphID = new int[numGroups];
-            buffer.position(offset+16);
             buffer = buffer.slice();
             IntBuffer ibuffer = buffer.asIntBuffer();
             for (int i=0; i<numGroups; i++) {
@@ -1110,7 +1122,13 @@
         char[][] glyphID;
 
         UVS(ByteBuffer buffer, int offset) {
-            numSelectors = buffer.getInt(offset+6);
+            buffer.position(offset+6);
+            numSelectors = buffer.getInt() & INTMASK;
+            // A variation selector record is one 3 byte int + two int32's
+            // making for 11 bytes per record.
+            if (buffer.remaining() < (11 * (long)numSelectors)) {
+                throw new RuntimeException("Variations exceed buffer");
+            }
             selector = new int[numSelectors];
             numUVSMapping = new int[numSelectors];
             unicodeValue = new int[numSelectors][];
@@ -1131,6 +1149,11 @@
                 } else if (tableOffset > 0) {
                     buffer.position(offset+tableOffset);
                     numUVSMapping[i] = buffer.getInt() & INTMASK;
+                    // a UVS mapping record is one 3 byte int + uint16
+                    // making for 5 bytes per record.
+                    if (buffer.remaining() < (5 * (long)numUVSMapping[i])) {
+                        throw new RuntimeException("Variations exceed buffer");
+                    }
                     unicodeValue[i] = new int[numUVSMapping[i]];
                     glyphID[i] = new char[numUVSMapping[i]];
 
--- a/src/java.desktop/share/classes/sun/font/FileFont.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.desktop/share/classes/sun/font/FileFont.java	Wed Oct 23 14:01:17 2019 -0400
@@ -172,7 +172,7 @@
             }
         }
         if (scaler != null) {
-            scaler.dispose();
+            scaler.disposeScaler();
         }
         scaler = FontScaler.getNullScaler();
     }
--- a/src/java.desktop/share/classes/sun/font/FontScaler.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.desktop/share/classes/sun/font/FontScaler.java	Wed Oct 23 14:01:17 2019 -0400
@@ -173,6 +173,12 @@
              scaler context objects! */
     public void dispose() {}
 
+    /**
+     * Used when the native resources held by the scaler need
+     * to be released before the 2D disposer runs.
+     */
+    public void disposeScaler() {}
+
     /* At the moment these 3 methods are needed for Type1 fonts only.
      * For Truetype fonts we extract required info outside of scaler
      * on java layer.
--- a/src/java.desktop/share/classes/sun/font/FreetypeFontScaler.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.desktop/share/classes/sun/font/FreetypeFontScaler.java	Wed Oct 23 14:01:17 2019 -0400
@@ -163,6 +163,9 @@
             .getNullScaler().getGlyphVectorOutline(0L, glyphs, numGlyphs, x, y);
     }
 
+    /* This method should not be called directly, in case
+     * it is being invoked from a thread with a native context.
+     */
     public synchronized void dispose() {
         if (nativeScaler != 0L) {
             disposeNativeScaler(font.get(), nativeScaler);
@@ -170,6 +173,21 @@
         }
     }
 
+    public synchronized void disposeScaler() {
+        if (nativeScaler != 0L) {
+           /*
+            * The current thread may be calling this method from the context
+            * of a JNI up-call. It will hold the native lock from the
+            * original down-call so can directly enter dispose and free
+            * the resources. So we need to schedule the disposal to happen
+            * only once we've returned from native. So by running the dispose
+            * on another thread which does nothing except that disposal we
+            * are sure that this is safe.
+            */
+            new Thread(null, () -> dispose(), "free scaler", 0, false).start();
+        }
+    }
+
     synchronized int getNumGlyphs() throws FontScalerException {
         if (nativeScaler != 0L) {
             return getNumGlyphsNative(nativeScaler);
@@ -206,7 +224,7 @@
         return getUnitsPerEMNative(nativeScaler);
     }
 
-    long createScalerContext(double[] matrix,
+    synchronized long createScalerContext(double[] matrix,
             int aa, int fm, float boldness, float italic,
             boolean disableHinting) {
         if (nativeScaler != 0L) {
@@ -236,7 +254,7 @@
     private native GeneralPath getGlyphVectorOutlineNative(Font2D font,
             long pScalerContext, long pScaler,
             int[] glyphs, int numGlyphs, float x, float y);
-    native Point2D.Float getGlyphPointNative(Font2D font,
+    private native Point2D.Float getGlyphPointNative(Font2D font,
             long pScalerContext, long pScaler, int glyphCode, int ptNumber);
 
     private native void disposeNativeScaler(Font2D font2D, long pScaler);
@@ -247,7 +265,7 @@
 
     private native long getUnitsPerEMNative(long pScaler);
 
-    native long createScalerContextNative(long pScaler, double[] matrix,
+    private native long createScalerContextNative(long pScaler, double[] matrix,
             int aa, int fm, float boldness, float italic);
 
     /* Freetype scaler context does not contain any pointers that
--- a/src/java.desktop/share/classes/sun/font/GlyphList.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.desktop/share/classes/sun/font/GlyphList.java	Wed Oct 23 14:01:17 2019 -0400
@@ -303,6 +303,14 @@
      */
     public void setGlyphIndex(int i) {
         glyphindex = i;
+        if (images[i] == 0L) {
+           metrics[0] = (int)gposx;
+           metrics[1] = (int)gposy;
+           metrics[2] = 0;
+           metrics[3] = 0;
+           metrics[4] = 0;
+           return;
+        }
         float gx =
             StrikeCache.unsafe.getFloat(images[i]+StrikeCache.topLeftXOffset);
         float gy =
@@ -341,6 +349,9 @@
                 graybits = new byte[len];
             }
         }
+        if (images[glyphindex] == 0L) {
+            return graybits;
+        }
         long pixelDataAddress =
             StrikeCache.unsafe.getAddress(images[glyphindex] +
                                           StrikeCache.pixelDataOffset);
@@ -448,6 +459,9 @@
         char gw, gh;
         float gx, gy, gx0, gy0, gx1, gy1;
         for (int i=0; i<len; i++) {
+            if (images[i] == 0L) {
+                continue;
+            }
             gx = StrikeCache.unsafe.getFloat(images[i]+xOffset);
             gy = StrikeCache.unsafe.getFloat(images[i]+yOffset);
             gw = StrikeCache.unsafe.getChar(images[i]+wOffset);
--- a/src/java.desktop/share/classes/sun/java2d/SunGraphics2D.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.desktop/share/classes/sun/java2d/SunGraphics2D.java	Wed Oct 23 14:01:17 2019 -0400
@@ -3021,7 +3021,8 @@
         if (data == null) {
             throw new NullPointerException("char data is null");
         }
-        if (offset < 0 || length < 0 || offset + length > data.length) {
+        if (offset < 0 || length < 0 || offset + length < length ||
+            offset + length > data.length) {
             throw new ArrayIndexOutOfBoundsException("bad offset/length");
         }
         if (font.hasLayoutAttributes()) {
@@ -3053,7 +3054,8 @@
         if (data == null) {
             throw new NullPointerException("byte data is null");
         }
-        if (offset < 0 || length < 0 || offset + length > data.length) {
+        if (offset < 0 || length < 0 || offset + length < length ||
+            offset + length > data.length) {
             throw new ArrayIndexOutOfBoundsException("bad offset/length");
         }
         /* Byte data is interpreted as 8-bit ASCII. Re-use drawChars loops */
--- a/src/java.desktop/share/native/common/java2d/opengl/OGLBlitLoops.c	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.desktop/share/native/common/java2d/opengl/OGLBlitLoops.c	Wed Oct 23 14:01:17 2019 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2003, 2014, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2003, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -208,21 +208,22 @@
 
     j2d_glPixelZoom(scalex, -scaley);
 
+    GLvoid *pSrc = PtrCoord(srcInfo->rasBase, sx1, srcInfo->pixelStride,
+                                              sy1, srcInfo->scanStride);
+
     // in case pixel stride is not a multiple of scanline stride the copy
     // has to be done line by line (see 6207877)
     if (srcInfo->scanStride % srcInfo->pixelStride != 0) {
         jint width = sx2-sx1;
         jint height = sy2-sy1;
-        GLvoid *pSrc = srcInfo->rasBase;
-
         while (height > 0) {
             j2d_glDrawPixels(width, 1, pf->format, pf->type, pSrc);
-            j2d_glBitmap(0, 0, 0, 0, (GLfloat)0, (GLfloat)-1, NULL);
+            j2d_glBitmap(0, 0, 0, 0, (GLfloat)0, (GLfloat)-scaley, NULL);
             pSrc = PtrAddBytes(pSrc, srcInfo->scanStride);
             height--;
         }
     } else {
-        j2d_glDrawPixels(sx2-sx1, sy2-sy1, pf->format, pf->type, srcInfo->rasBase);
+        j2d_glDrawPixels(sx2-sx1, sy2-sy1, pf->format, pf->type, pSrc);
     }
 
     j2d_glPixelZoom(1.0, 1.0);
@@ -317,12 +318,11 @@
             ty2 = ((GLdouble)sh) / th;
 
             if (swsurface) {
+                GLvoid *pSrc = PtrCoord(srcInfo->rasBase,
+                                        sx, srcInfo->pixelStride,
+                                        sy, srcInfo->scanStride);
                 if (slowPath) {
                     jint tmph = sh;
-                    GLvoid *pSrc = PtrCoord(srcInfo->rasBase,
-                                            sx, srcInfo->pixelStride,
-                                            sy, srcInfo->scanStride);
-
                     while (tmph > 0) {
                         j2d_glTexSubImage2D(GL_TEXTURE_2D, 0,
                                             0, sh - tmph, sw, 1,
@@ -332,16 +332,10 @@
                         tmph--;
                     }
                 } else {
-                    j2d_glPixelStorei(GL_UNPACK_SKIP_PIXELS, sx);
-                    j2d_glPixelStorei(GL_UNPACK_SKIP_ROWS, sy);
-
                     j2d_glTexSubImage2D(GL_TEXTURE_2D, 0,
                                         0, 0, sw, sh,
                                         pf->format, pf->type,
-                                        srcInfo->rasBase);
-
-                    j2d_glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0);
-                    j2d_glPixelStorei(GL_UNPACK_SKIP_ROWS, 0);
+                                        pSrc);
                 }
 
                 // the texture image is "right side up", so we align the
@@ -638,8 +632,9 @@
             J2dTraceLn4(J2D_TRACE_VERBOSE, "  dx1=%f dy1=%f dx2=%f dy2=%f",
                         dx1, dy1, dx2, dy2);
 
-            j2d_glPixelStorei(GL_UNPACK_SKIP_PIXELS, sx1);
-            j2d_glPixelStorei(GL_UNPACK_SKIP_ROWS, sy1);
+            // Note: we will calculate x/y positions in the raster manually
+            j2d_glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0);
+            j2d_glPixelStorei(GL_UNPACK_SKIP_ROWS, 0);
             j2d_glPixelStorei(GL_UNPACK_ROW_LENGTH,
                               srcInfo.scanStride / srcInfo.pixelStride);
             j2d_glPixelStorei(GL_UNPACK_ALIGNMENT, pf.alignment);
@@ -696,8 +691,6 @@
                 }
             }
 
-            j2d_glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0);
-            j2d_glPixelStorei(GL_UNPACK_SKIP_ROWS, 0);
             j2d_glPixelStorei(GL_UNPACK_ROW_LENGTH, 0);
             j2d_glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
         }
@@ -717,8 +710,8 @@
     juint step = 0;
     // vertical flip and convert argbpre to argb if necessary
     for (; i < h / 2; ++i) {
-        juint *r1 = PtrAddBytes(pDst, (i * scanStride));
-        juint *r2 = PtrAddBytes(pDst, (h - i - 1) * scanStride);
+        juint *r1 = PtrPixelsRow(pDst, i, scanStride);
+        juint *r2 = PtrPixelsRow(pDst, h - i - 1, scanStride);
         if (tempRow) {
             // fast path
             memcpy(tempRow, r1, clippedStride);
@@ -740,7 +733,7 @@
     }
     // convert the middle line if necessary
     if (convert && h % 2) {
-        juint *r1 = PtrAddBytes(pDst, (i * scanStride));
+        juint *r1 = PtrPixelsRow(pDst, i, scanStride);
         for (step = 0; step < w; ++step) {
             LoadIntArgbPreTo1IntArgb(r1, 0, step, r1[step]);
         }
@@ -813,7 +806,7 @@
             height = srcInfo.bounds.y2 - srcInfo.bounds.y1;
 
             pDst = PtrAddBytes(pDst, dstx * dstInfo.pixelStride);
-            pDst = PtrAddBytes(pDst, dsty * dstInfo.scanStride);
+            pDst = PtrPixelsRow(pDst, dsty, dstInfo.scanStride);
 
             j2d_glPixelStorei(GL_PACK_ROW_LENGTH,
                               dstInfo.scanStride / dstInfo.pixelStride);
--- a/src/java.desktop/share/native/libawt/java2d/loops/GraphicsPrimitiveMgr.h	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.desktop/share/native/libawt/java2d/loops/GraphicsPrimitiveMgr.h	Wed Oct 23 14:01:17 2019 -0400
@@ -490,6 +490,8 @@
 #define PtrCoord(p, x, xinc, y, yinc)   PtrAddBytes(p, \
                                                     ((ptrdiff_t)(y))*(yinc) + \
                                                     ((ptrdiff_t)(x))*(xinc))
+#define PtrPixelsRow(p, y, scanStride)    PtrAddBytes(p, \
+    ((intptr_t) (y)) * (scanStride))
 
 /*
  * The function to call with an array of NativePrimitive structures
--- a/src/java.desktop/share/native/libawt/java2d/loops/LoopMacros.h	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.desktop/share/native/libawt/java2d/loops/LoopMacros.h	Wed Oct 23 14:01:17 2019 -0400
@@ -137,7 +137,7 @@
         do { \
             juint w = WIDTH; \
             jint tmpsxloc = SXLOC; \
-            SRCPTR = PtrAddBytes(SRCBASE, ((SYLOC >> SHIFT) * srcScan)); \
+            SRCPTR = PtrPixelsRow(SRCBASE, (SYLOC >> SHIFT), srcScan); \
             Init ## DSTTYPE ## StoreVarsX(DSTPREFIX, DSTINFO); \
             do { \
                 jint XVAR = (tmpsxloc >> SHIFT); \
@@ -2067,7 +2067,7 @@
  \
     Init ## SRC ## LoadVars(SrcRead, pSrcInfo); \
     while (pRGB < pEnd) { \
-        SRC ## DataType *pRow = PtrAddBytes(pBase, WholeOfLong(ylong) * scan); \
+        SRC ## DataType *pRow = PtrPixelsRow(pBase, WholeOfLong(ylong), scan); \
         Copy ## SRC ## ToIntArgbPre(pRGB, 0, \
                                     SrcRead, pRow, WholeOfLong(xlong)); \
         pRGB++; \
@@ -2115,7 +2115,7 @@
         ydelta &= scan; \
  \
         xwhole += cx; \
-        pRow = PtrAddBytes(pSrcInfo->rasBase, (ywhole + cy) * scan); \
+        pRow = PtrPixelsRow(pSrcInfo->rasBase, ywhole + cy, scan); \
         Copy ## SRC ## ToIntArgbPre(pRGB, 0, SrcRead, pRow, xwhole); \
         Copy ## SRC ## ToIntArgbPre(pRGB, 1, SrcRead, pRow, xwhole+xdelta); \
         pRow = PtrAddBytes(pRow, ydelta); \
@@ -2173,7 +2173,7 @@
         ydelta1 += (isneg & -scan); \
  \
         xwhole += cx; \
-        pRow = PtrAddBytes(pSrcInfo->rasBase, (ywhole + cy) * scan); \
+        pRow = PtrPixelsRow(pSrcInfo->rasBase, ywhole + cy, scan); \
         pRow = PtrAddBytes(pRow, ydelta0); \
         Copy ## SRC ## ToIntArgbPre(pRGB,  0, SrcRead, pRow, xwhole+xdelta0); \
         Copy ## SRC ## ToIntArgbPre(pRGB,  1, SrcRead, pRow, xwhole        ); \
--- a/src/java.desktop/share/native/libfontmanager/DrawGlyphList.c	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.desktop/share/native/libfontmanager/DrawGlyphList.c	Wed Oct 23 14:01:17 2019 -0400
@@ -532,6 +532,12 @@
      */
     if (subPixPos && len > 0) {
         ginfo = (GlyphInfo*)imagePtrs[0];
+        if (ginfo == NULL) {
+            (*env)->ReleasePrimitiveArrayCritical(env, glyphImages,
+                                                  imagePtrs, JNI_ABORT);
+            free(gbv);
+            return (GlyphBlitVector*)NULL;
+        }
         /* rowBytes==width tests if its a B&W or LCD glyph */
         if (ginfo->width == ginfo->rowBytes) {
             subPixPos = JNI_FALSE;
@@ -561,6 +567,12 @@
             jfloat px, py;
 
             ginfo = (GlyphInfo*)imagePtrs[g];
+            if (ginfo == NULL) {
+                (*env)->ReleasePrimitiveArrayCritical(env, glyphImages,
+                                                  imagePtrs, JNI_ABORT);
+                free(gbv);
+                return (GlyphBlitVector*)NULL;
+            }
             gbv->glyphs[g].glyphInfo = ginfo;
             gbv->glyphs[g].pixels = ginfo->image;
             gbv->glyphs[g].width = ginfo->width;
@@ -636,6 +648,12 @@
     } else {
         for (g=0; g<len; g++) {
             ginfo = (GlyphInfo*)imagePtrs[g];
+            if (ginfo == NULL) {
+                (*env)->ReleasePrimitiveArrayCritical(env, glyphImages,
+                                                  imagePtrs, JNI_ABORT);
+                free(gbv);
+                return (GlyphBlitVector*)NULL;
+            }
             gbv->glyphs[g].glyphInfo = ginfo;
             gbv->glyphs[g].pixels = ginfo->image;
             gbv->glyphs[g].width = ginfo->width;
--- a/src/java.desktop/share/native/libfontmanager/freetypeScaler.c	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.desktop/share/native/libfontmanager/freetypeScaler.c	Wed Oct 23 14:01:17 2019 -0400
@@ -154,7 +154,31 @@
     jobject bBuffer;
     int bread = 0;
 
-    if (numBytes == 0) return 0;
+    /* A call with numBytes == 0 is a seek. It should return 0 if the
+     * seek position is within the file and non-zero otherwise.
+     * For all other cases, ie numBytes !=0, return the number of bytes
+     * actually read. This applies to truncated reads and also failed reads.
+     */
+
+    if (numBytes == 0) {
+        if (offset > scalerInfo->fileSize) {
+            return -1;
+        } else {
+            return 0;
+       }
+    }
+
+    if (offset + numBytes < offset) {
+        return 0; // ft should not do this, but just in case.
+    }
+
+    if (offset >= scalerInfo->fileSize) {
+        return 0;
+    }
+
+    if (offset + numBytes > scalerInfo->fileSize) {
+        numBytes = scalerInfo->fileSize - offset;
+    }
 
     /* Large reads will bypass the cache and data copying */
     if (numBytes > FILEDATACACHESIZE) {
@@ -164,7 +188,11 @@
                                           scalerInfo->font2D,
                                           sunFontIDs.ttReadBlockMID,
                                           bBuffer, offset, numBytes);
-            return bread;
+            if (bread < 0) {
+                return 0;
+            } else {
+               return bread;
+            }
         } else {
             /* We probably hit bug 4845371. For reasons that
              * are currently unclear, the call stacks after the initial
@@ -179,9 +207,18 @@
             (*env)->CallObjectMethod(env, scalerInfo->font2D,
                                      sunFontIDs.ttReadBytesMID,
                                      offset, numBytes);
-            (*env)->GetByteArrayRegion(env, byteArray,
-                                       0, numBytes, (jbyte*)destBuffer);
-            return numBytes;
+            /* If there's an OutofMemoryError then byteArray will be null */
+            if (byteArray == NULL) {
+                return 0;
+            } else {
+                jsize len = (*env)->GetArrayLength(env, byteArray);
+                if (len < numBytes) {
+                    numBytes = len; // don't get more bytes than there are ..
+                }
+                (*env)->GetByteArrayRegion(env, byteArray,
+                                           0, numBytes, (jbyte*)destBuffer);
+                return numBytes;
+            }
         }
     } /* Do we have a cache hit? */
       else if (scalerInfo->fontDataOffset <= offset &&
@@ -203,6 +240,11 @@
                                       sunFontIDs.ttReadBlockMID,
                                       bBuffer, offset,
                                       scalerInfo->fontDataLength);
+        if (bread <= 0) {
+            return 0;
+        } else if (bread < numBytes) {
+           numBytes = bread;
+        }
         memcpy(destBuffer, scalerInfo->fontData, numBytes);
         return numBytes;
     }
@@ -593,16 +635,17 @@
       to avoid unnecesary work with bitmaps. */
 
     GlyphInfo *info;
-    jfloat advance;
+    jfloat advance = 0.0f;
     jlong image;
 
     image = Java_sun_font_FreetypeFontScaler_getGlyphImageNative(
                  env, scaler, font2D, pScalerContext, pScaler, glyphCode);
     info = (GlyphInfo*) jlong_to_ptr(image);
 
-    advance = info->advanceX;
-
-    free(info);
+    if (info != NULL) {
+        advance = info->advanceX;
+        free(info);
+    }
 
     return advance;
 }
@@ -630,10 +673,14 @@
                                  pScalerContext, pScaler, glyphCode);
      info = (GlyphInfo*) jlong_to_ptr(image);
 
-     (*env)->SetFloatField(env, metrics, sunFontIDs.xFID, info->advanceX);
-     (*env)->SetFloatField(env, metrics, sunFontIDs.yFID, info->advanceY);
-
-     free(info);
+     if (info != NULL) {
+         (*env)->SetFloatField(env, metrics, sunFontIDs.xFID, info->advanceX);
+         (*env)->SetFloatField(env, metrics, sunFontIDs.yFID, info->advanceY);
+         free(info);
+     } else {
+         (*env)->SetFloatField(env, metrics, sunFontIDs.xFID, 0.0f);
+         (*env)->SetFloatField(env, metrics, sunFontIDs.yFID, 0.0f);
+     }
 }
 
 
@@ -740,6 +787,13 @@
 }
 
 
+/* JDK does not use glyph images for fonts with a
+ * pixel size > 100 (see THRESHOLD in OutlineTextRenderer.java)
+ * so if the glyph bitmap image dimension is > 1024 pixels,
+ * something is up.
+ */
+#define MAX_GLYPH_DIM 1024
+
 /*
  * Class:     sun_font_FreetypeFontScaler
  * Method:    getGlyphImageNative
@@ -813,6 +867,14 @@
     /* generate bitmap if it is not done yet
      e.g. if algorithmic styling is performed and style was added to outline */
     if (ftglyph->format == FT_GLYPH_FORMAT_OUTLINE) {
+        FT_BBox bbox;
+        FT_Outline_Get_CBox(&(ftglyph->outline), &bbox);
+        int w = (int)((bbox.xMax>>6)-(bbox.xMin>>6));
+        int h = (int)((bbox.yMax>>6)-(bbox.yMin>>6));
+        if (w > MAX_GLYPH_DIM || h > MAX_GLYPH_DIM) {
+            glyphInfo = getNullGlyphImage();
+            return ptr_to_jlong(glyphInfo);
+        }
         error = FT_Render_Glyph(ftglyph, FT_LOAD_TARGET_MODE(target));
         if (error != 0) {
             return ptr_to_jlong(getNullGlyphImage());
@@ -821,6 +883,11 @@
 
     width  = (UInt16) ftglyph->bitmap.width;
     height = (UInt16) ftglyph->bitmap.rows;
+    if (width > MAX_GLYPH_DIM || height > MAX_GLYPH_DIM) {
+        glyphInfo = getNullGlyphImage();
+        return ptr_to_jlong(glyphInfo);
+    }
+
 
     imageSize = width*height;
     glyphInfo = (GlyphInfo*) malloc(sizeof(GlyphInfo) + imageSize);
--- a/src/java.desktop/share/native/libfontmanager/hb-jdk-font.cc	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.desktop/share/native/libfontmanager/hb-jdk-font.cc	Wed Oct 23 14:01:17 2019 -0400
@@ -351,6 +351,9 @@
   }
   length = env->GetArrayLength(tableBytes);
   buffer = calloc(length, sizeof(jbyte));
+  if (buffer == NULL) {
+      return NULL;
+  }
   env->GetByteArrayRegion(tableBytes, 0, length, (jbyte*)buffer);
 
   return hb_blob_create((const char *)buffer, length,
--- a/src/java.desktop/unix/classes/sun/font/XRGlyphCache.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.desktop/unix/classes/sun/font/XRGlyphCache.java	Wed Oct 23 14:01:17 2019 -0400
@@ -114,6 +114,9 @@
         for (int i = 0; i < glyphList.getNumGlyphs(); i++) {
             XRGlyphCacheEntry glyph;
 
+            if (imgPtrs[i] == 0L) {
+                continue;
+            }
             // Find uncached glyphs and queue them for upload
             if ((glyph = getEntryForPointer(imgPtrs[i])) == null) {
                 glyph = new XRGlyphCacheEntry(imgPtrs[i], glyphList);
--- a/src/java.desktop/unix/classes/sun/font/XRTextRenderer.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.desktop/unix/classes/sun/font/XRTextRenderer.java	Wed Oct 23 14:01:17 2019 -0400
@@ -88,6 +88,9 @@
             for (int i = 0; i < gl.getNumGlyphs(); i++) {
                 gl.setGlyphIndex(i);
                 XRGlyphCacheEntry cacheEntry = cachedGlyphs[i];
+                if (cacheEntry == null) {
+                    continue;
+                }
 
                 eltList.getGlyphs().addInt(cacheEntry.getGlyphID());
                 int glyphSet = cacheEntry.getGlyphSet();
--- a/src/java.desktop/unix/native/common/java2d/x11/X11FontScaler_md.c	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.desktop/unix/native/common/java2d/x11/X11FontScaler_md.c	Wed Oct 23 14:01:17 2019 -0400
@@ -273,6 +273,7 @@
     unsigned int imageSize;
     JNIEnv *env;
 
+
     FONT_AWT_LOCK();
 /*     XTextExtents16(xFont, xChar, 1, &direction, &ascent, &descent, &xcs); */
     XQueryTextExtents16(awt_display,xFont->fid, xChar, 1,
@@ -280,8 +281,11 @@
     width = xcs.rbearing - xcs.lbearing;
     height = xcs.ascent+xcs.descent;
     imageSize = width*height;
-
     glyphInfo = (GlyphInfo*)malloc(sizeof(GlyphInfo)+imageSize);
+    if (glyphInfo == NULL) {
+        AWT_UNLOCK();
+        return (jlong)(uintptr_t)NULL;
+    }
     glyphInfo->cellInfo = NULL;
     glyphInfo->width = width;
     glyphInfo->height = height;
--- a/src/java.desktop/windows/native/libawt/java2d/d3d/D3DContext.cpp	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.desktop/windows/native/libawt/java2d/d3d/D3DContext.cpp	Wed Oct 23 14:01:17 2019 -0400
@@ -1092,7 +1092,9 @@
 {
 #ifndef PtrAddBytes
 #define PtrAddBytes(p, b)               ((void *) (((intptr_t) (p)) + (b)))
-#define PtrCoord(p, x, xinc, y, yinc)   PtrAddBytes(p, (y)*(yinc) + (x)*(xinc))
+#define PtrCoord(p, x, xinc, y, yinc)   PtrAddBytes(p, \
+                                                    ((ptrdiff_t)(y))*(yinc) + \
+                                                    ((ptrdiff_t)(x))*(xinc))
 #endif // PtrAddBytes
 
     HRESULT res = S_OK;
--- a/src/java.management/share/classes/com/sun/jmx/mbeanserver/Introspector.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.management/share/classes/com/sun/jmx/mbeanserver/Introspector.java	Wed Oct 23 14:01:17 2019 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1999, 2015, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1999, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -450,7 +450,7 @@
      * @return nothing - this method always throw an exception.
      *         The return type makes it possible to write
      *         <pre> throw throwException(clazz,cause); </pre>
-     * @throws SecurityException - if cause is a SecurityException
+     * @throws SecurityException   if cause is a SecurityException
      * @throws NotCompliantMBeanException otherwise.
      **/
     static NotCompliantMBeanException throwException(Class<?> notCompliant,
--- a/src/java.net.http/share/classes/jdk/internal/net/http/HttpRequestImpl.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.net.http/share/classes/jdk/internal/net/http/HttpRequestImpl.java	Wed Oct 23 14:01:17 2019 -0400
@@ -41,6 +41,7 @@
 import java.net.http.HttpClient;
 import java.net.http.HttpHeaders;
 import java.net.http.HttpRequest;
+
 import jdk.internal.net.http.common.HttpHeadersBuilder;
 import jdk.internal.net.http.common.Utils;
 import jdk.internal.net.http.websocket.OpeningHandshake;
@@ -152,13 +153,14 @@
     /** Returns a new instance suitable for redirection. */
     public static HttpRequestImpl newInstanceForRedirection(URI uri,
                                                             String method,
-                                                            HttpRequestImpl other) {
-        return new HttpRequestImpl(uri, method, other);
+                                                            HttpRequestImpl other,
+                                                            boolean mayHaveBody) {
+        return new HttpRequestImpl(uri, method, other, mayHaveBody);
     }
 
     /** Returns a new instance suitable for authentication. */
     public static HttpRequestImpl newInstanceForAuthentication(HttpRequestImpl other) {
-        HttpRequestImpl request = new HttpRequestImpl(other.uri(), other.method(), other);
+        HttpRequestImpl request = new HttpRequestImpl(other.uri(), other.method(), other, true);
         if (request.isWebSocket()) {
             Utils.setWebSocketUpgradeHeaders(request);
         }
@@ -171,7 +173,8 @@
      */
     private HttpRequestImpl(URI uri,
                             String method,
-                            HttpRequestImpl other) {
+                            HttpRequestImpl other,
+                            boolean mayHaveBody) {
         assert method == null || Utils.isValidName(method);
         this.method = method == null? "GET" : method;
         this.userHeaders = other.userHeaders;
@@ -184,13 +187,21 @@
         this.proxy = other.proxy;
         this.expectContinue = other.expectContinue;
         this.secure = uri.getScheme().toLowerCase(Locale.US).equals("https");
-        this.requestPublisher = other.requestPublisher;  // may be null
+        this.requestPublisher = mayHaveBody ? publisher(other) : null; // may be null
         this.acc = other.acc;
         this.timeout = other.timeout;
         this.version = other.version();
         this.authority = null;
     }
 
+    private BodyPublisher publisher(HttpRequestImpl other) {
+        BodyPublisher res = other.requestPublisher;
+        if (!Objects.equals(method, other.method)) {
+            res = null;
+        }
+        return res;
+    }
+
     /* used for creating CONNECT requests  */
     HttpRequestImpl(String method, InetSocketAddress authority, HttpHeaders headers) {
         // TODO: isWebSocket flag is not specified, but the assumption is that
--- a/src/java.net.http/share/classes/jdk/internal/net/http/RedirectFilter.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.net.http/share/classes/jdk/internal/net/http/RedirectFilter.java	Wed Oct 23 14:01:17 2019 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015, 2018, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2015, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -89,6 +89,31 @@
         }
     }
 
+    private static boolean isRedirecting(int statusCode) {
+        // < 300: not a redirect codes
+        if (statusCode < 300) return false;
+        // 309-399 Unassigned => don't follow
+        // > 399: not a redirect code
+        if (statusCode > 308) return false;
+        switch (statusCode) {
+            // 300: MultipleChoice => don't follow
+            case 300:
+                return false;
+            // 304: Not Modified => don't follow
+            case 304:
+                return false;
+            // 305: Proxy Redirect => don't follow.
+            case 305:
+                return false;
+            // 306: Unused => don't follow
+            case 306:
+                return false;
+            // 301, 302, 303, 307, 308: OK to follow.
+            default:
+                return true;
+        }
+    }
+
     /**
      * Checks to see if a new request is needed and returns it.
      * Null means response is ok to return to user.
@@ -102,13 +127,13 @@
         if (rcode == HTTP_NOT_MODIFIED)
             return null;
 
-        if (rcode >= 300 && rcode <= 399) {
+        if (isRedirecting(rcode)) {
             URI redir = getRedirectedURI(r.headers());
             String newMethod = redirectedMethod(rcode, method);
             Log.logTrace("response code: {0}, redirected URI: {1}", rcode, redir);
             if (canRedirect(redir) && ++exchange.numberOfRedirects < max_redirects) {
                 Log.logTrace("redirect to: {0} with method: {1}", redir, newMethod);
-                return HttpRequestImpl.newInstanceForRedirection(redir, newMethod, request);
+                return HttpRequestImpl.newInstanceForRedirection(redir, newMethod, request, rcode != 303);
             } else {
                 Log.logTrace("not redirecting");
                 return null;
--- a/src/java.net.http/share/classes/jdk/internal/net/http/common/SSLFlowDelegate.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.net.http/share/classes/jdk/internal/net/http/common/SSLFlowDelegate.java	Wed Oct 23 14:01:17 2019 -0400
@@ -318,14 +318,19 @@
 
         @Override
         protected long upstreamWindowUpdate(long currentWindow, long downstreamQsize) {
-            if (readBuf.remaining() > TARGET_BUFSIZE) {
-                if (debugr.on())
-                    debugr.log("readBuf has more than TARGET_BUFSIZE: %d",
-                            readBuf.remaining());
-                return 0;
-            } else {
-                return super.upstreamWindowUpdate(currentWindow, downstreamQsize);
+            if (needsMoreData()) {
+                // run the scheduler to see if more data should be requested
+                if (debugr.on()) {
+                    int remaining = readBuf.remaining();
+                    if (remaining > TARGET_BUFSIZE) {
+                        // just some logging to check how much we have in the read buffer
+                        debugr.log("readBuf has more than TARGET_BUFSIZE: %d",
+                                remaining);
+                    }
+                }
+                scheduler.runOrSchedule();
             }
+            return 0; // we will request more from the scheduler loop (processData).
         }
 
         // readBuf is kept ready for reading outside of this method
@@ -368,6 +373,32 @@
         // we had before calling unwrap() again.
         volatile int minBytesRequired;
 
+        // We might need to request more data if:
+        //  - we have a subscription from upstream
+        //  - and we don't have enough data to decrypt in the read buffer
+        //  - *and* - either we're handshaking, and more data is required (NEED_UNWRAP),
+        //          - or we have demand from downstream, but we have nothing decrypted
+        //            to forward downstream.
+        boolean needsMoreData() {
+            if (upstreamSubscription != null && readBuf.remaining() <= minBytesRequired &&
+                    (engine.getHandshakeStatus() == HandshakeStatus.NEED_UNWRAP
+                            || !downstreamSubscription.demand.isFulfilled() && hasNoOutputData())) {
+                return true;
+            }
+            return false;
+        }
+
+        // If the readBuf has not enough data, and we either need to
+        // unwrap (handshaking) or we have demand from downstream,
+        // then request more data
+        void requestMoreDataIfNeeded() {
+            if (needsMoreData()) {
+                // request more will only request more if our
+                // demand from upstream is fulfilled
+                requestMore();
+            }
+        }
+
         // work function where it all happens
         final void processData() {
             try {
@@ -434,6 +465,7 @@
                             outgoing(Utils.EMPTY_BB_LIST, true);
                             // complete ALPN if not yet completed
                             setALPN();
+                            requestMoreDataIfNeeded();
                             return;
                         }
                         if (result.handshaking()) {
@@ -451,8 +483,10 @@
                         handleError(ex);
                         return;
                     }
-                    if (handshaking && !complete)
+                    if (handshaking && !complete) {
+                        requestMoreDataIfNeeded();
                         return;
+                    }
                 }
                 if (!complete) {
                     synchronized (readBufferLock) {
@@ -466,6 +500,8 @@
                     // activity.
                     setALPN();
                     outgoing(Utils.EMPTY_BB_LIST, true);
+                } else {
+                    requestMoreDataIfNeeded();
                 }
             } catch (Throwable ex) {
                 errorCommon(ex);
--- a/src/java.net.http/share/classes/jdk/internal/net/http/common/SubscriberWrapper.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.net.http/share/classes/jdk/internal/net/http/common/SubscriberWrapper.java	Wed Oct 23 14:01:17 2019 -0400
@@ -26,9 +26,7 @@
 package jdk.internal.net.http.common;
 
 import java.io.Closeable;
-import java.lang.System.Logger.Level;
 import java.nio.ByteBuffer;
-import java.util.ArrayList;
 import java.util.List;
 import java.util.Objects;
 import java.util.concurrent.CompletableFuture;
@@ -318,11 +316,33 @@
                 downstreamSubscriber.onNext(b);
                 datasent = true;
             }
-            if (datasent) upstreamWindowUpdate();
+
+            // If we have sent some decrypted data downstream,
+            // or if:
+            //    - there's nothing more available to send downstream
+            //    - and we still have some demand from downstream
+            //    - and upstream is not completed yet
+            //    - and our demand from upstream has reached 0,
+            // then check whether we should request more data from
+            // upstream
+            if (datasent || outputQ.isEmpty()
+                    && !downstreamSubscription.demand.isFulfilled()
+                    && !upstreamCompleted
+                    && upstreamWindow.get() == 0) {
+                upstreamWindowUpdate();
+            }
             checkCompletion();
         }
     }
 
+    final int outputQueueSize() {
+        return outputQ.size();
+    }
+
+    final boolean hasNoOutputData() {
+        return outputQ.isEmpty();
+    }
+
     void upstreamWindowUpdate() {
         long downstreamQueueSize = outputQ.size();
         long upstreamWindowSize = upstreamWindow.get();
@@ -341,7 +361,7 @@
             throw new IllegalStateException("Single shot publisher");
         }
         this.upstreamSubscription = subscription;
-        upstreamRequest(upstreamWindowUpdate(0, 0));
+        upstreamRequest(initialUpstreamDemand());
         if (debug.on())
             debug.log("calling downstreamSubscriber::onSubscribe on %s",
                       downstreamSubscriber);
@@ -356,7 +376,6 @@
         if (prev <= 0)
             throw new IllegalStateException("invalid onNext call");
         incomingCaller(item, false);
-        upstreamWindowUpdate();
     }
 
     private void upstreamRequest(long n) {
@@ -365,6 +384,16 @@
         upstreamSubscription.request(n);
     }
 
+    /**
+     * Initial demand that should be requested
+     * from upstream when we get the upstream subscription
+     * from {@link #onSubscribe(Flow.Subscription)}.
+     * @return The initial demand to request from upstream.
+     */
+    protected long initialUpstreamDemand() {
+        return 1;
+    }
+
     protected void requestMore() {
         if (upstreamWindow.get() == 0) {
             upstreamRequest(1);
--- a/src/java.rmi/share/classes/java/rmi/activation/ActivationGroup.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.rmi/share/classes/java/rmi/activation/ActivationGroup.java	Wed Oct 23 14:01:17 2019 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -107,6 +107,7 @@
     /**
      * @serial the group's monitor
      */
+    @SuppressWarnings("serial") // Not statically typed as Serializable
     private ActivationMonitor monitor;
 
     /**
--- a/src/java.rmi/share/classes/java/rmi/activation/ActivationGroupID.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.rmi/share/classes/java/rmi/activation/ActivationGroupID.java	Wed Oct 23 14:01:17 2019 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -49,6 +49,7 @@
     /**
      * @serial The group's activation system.
      */
+    @SuppressWarnings("serial") // Not statically typed as Serializable
     private ActivationSystem system;
 
     /**
--- a/src/java.rmi/share/classes/java/rmi/server/UnicastRemoteObject.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.rmi/share/classes/java/rmi/server/UnicastRemoteObject.java	Wed Oct 23 14:01:17 2019 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1996, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1996, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -189,12 +189,14 @@
     /**
      * @serial client-side socket factory (if any)
      */
+    @SuppressWarnings("serial") // Not statically typed as Serializable
     private RMIClientSocketFactory csf = null;
 
     /**
      * @serial server-side socket factory (if any) to use when
      * exporting object
      */
+    @SuppressWarnings("serial") // Not statically typed as Serializable
     private RMIServerSocketFactory ssf = null;
 
     /* indicate compatibility with JDK 1.1.x version of class */
--- a/src/java.rmi/share/classes/sun/rmi/registry/RegistryImpl_Skel.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.rmi/share/classes/sun/rmi/registry/RegistryImpl_Skel.java	Wed Oct 23 14:01:17 2019 -0400
@@ -27,13 +27,8 @@
 package sun.rmi.registry;
 
 import java.io.IOException;
-import java.io.InputStream;
-import java.rmi.AccessException;
-import java.rmi.server.RemoteCall;
 
-import sun.rmi.transport.Connection;
 import sun.rmi.transport.StreamRemoteCall;
-import sun.rmi.transport.tcp.TCPConnection;
 
 /**
  * Skeleton to dispatch RegistryImpl methods.
@@ -56,7 +51,7 @@
         return operations.clone();
     }
 
-    public void dispatch(java.rmi.Remote obj, java.rmi.server.RemoteCall call, int opnum, long hash)
+    public void dispatch(java.rmi.Remote obj, java.rmi.server.RemoteCall remoteCall, int opnum, long hash)
             throws java.lang.Exception {
         if (opnum < 0) {
             if (hash == 7583982177005850366L) {
@@ -78,6 +73,7 @@
         }
 
         sun.rmi.registry.RegistryImpl server = (sun.rmi.registry.RegistryImpl) obj;
+        StreamRemoteCall call = (StreamRemoteCall) remoteCall;
         switch (opnum) {
             case 0: // bind(String, Remote)
             {
@@ -90,7 +86,8 @@
                     java.io.ObjectInput in = call.getInputStream();
                     $param_String_1 = (java.lang.String) in.readObject();
                     $param_Remote_2 = (java.rmi.Remote) in.readObject();
-                } catch (java.io.IOException | java.lang.ClassNotFoundException e) {
+                } catch (ClassCastException | IOException | ClassNotFoundException e) {
+                    call.discardPendingRefs();
                     throw new java.rmi.UnmarshalException("error unmarshalling arguments", e);
                 } finally {
                     call.releaseInputStream();
@@ -123,7 +120,8 @@
                 try {
                     java.io.ObjectInput in = call.getInputStream();
                     $param_String_1 = (java.lang.String) in.readObject();
-                } catch (java.io.IOException | java.lang.ClassNotFoundException e) {
+                } catch (ClassCastException | IOException | ClassNotFoundException e) {
+                    call.discardPendingRefs();
                     throw new java.rmi.UnmarshalException("error unmarshalling arguments", e);
                 } finally {
                     call.releaseInputStream();
@@ -149,7 +147,8 @@
                     java.io.ObjectInput in = call.getInputStream();
                     $param_String_1 = (java.lang.String) in.readObject();
                     $param_Remote_2 = (java.rmi.Remote) in.readObject();
-                } catch (java.io.IOException | java.lang.ClassNotFoundException e) {
+                } catch (ClassCastException | IOException | java.lang.ClassNotFoundException e) {
+                    call.discardPendingRefs();
                     throw new java.rmi.UnmarshalException("error unmarshalling arguments", e);
                 } finally {
                     call.releaseInputStream();
@@ -172,7 +171,8 @@
                 try {
                     java.io.ObjectInput in = call.getInputStream();
                     $param_String_1 = (java.lang.String) in.readObject();
-                } catch (java.io.IOException | java.lang.ClassNotFoundException e) {
+                } catch (ClassCastException | IOException | ClassNotFoundException e) {
+                    call.discardPendingRefs();
                     throw new java.rmi.UnmarshalException("error unmarshalling arguments", e);
                 } finally {
                     call.releaseInputStream();
--- a/src/java.rmi/share/classes/sun/rmi/registry/RegistryImpl_Stub.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.rmi/share/classes/sun/rmi/registry/RegistryImpl_Stub.java	Wed Oct 23 14:01:17 2019 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2017, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -24,6 +24,11 @@
  */
 
 package sun.rmi.registry;
+
+import java.io.IOException;
+
+import sun.rmi.transport.StreamRemoteCall;
+
 /**
  * Stubs to invoke RegistryImpl remote methods.
  * Originally generated from RMIC but frozen to match RegistryImpl_Skel.
@@ -57,7 +62,7 @@
     public void bind(java.lang.String $param_String_1, java.rmi.Remote $param_Remote_2)
             throws java.rmi.AccessException, java.rmi.AlreadyBoundException, java.rmi.RemoteException {
         try {
-            java.rmi.server.RemoteCall call = ref.newCall((java.rmi.server.RemoteObject) this, operations, 0, interfaceHash);
+            StreamRemoteCall call = (StreamRemoteCall)ref.newCall(this, operations, 0, interfaceHash);
             try {
                 java.io.ObjectOutput out = call.getOutputStream();
                 out.writeObject($param_String_1);
@@ -82,15 +87,14 @@
     public java.lang.String[] list()
             throws java.rmi.AccessException, java.rmi.RemoteException {
         try {
-            java.rmi.server.RemoteCall call = ref.newCall((java.rmi.server.RemoteObject) this, operations, 1, interfaceHash);
+            StreamRemoteCall call = (StreamRemoteCall)ref.newCall(this, operations, 1, interfaceHash);
             ref.invoke(call);
             java.lang.String[] $result;
             try {
                 java.io.ObjectInput in = call.getInputStream();
                 $result = (java.lang.String[]) in.readObject();
-            } catch (java.io.IOException e) {
-                throw new java.rmi.UnmarshalException("error unmarshalling return", e);
-            } catch (java.lang.ClassNotFoundException e) {
+            } catch (ClassCastException | IOException | ClassNotFoundException e) {
+                call.discardPendingRefs();
                 throw new java.rmi.UnmarshalException("error unmarshalling return", e);
             } finally {
                 ref.done(call);
@@ -109,7 +113,7 @@
     public java.rmi.Remote lookup(java.lang.String $param_String_1)
             throws java.rmi.AccessException, java.rmi.NotBoundException, java.rmi.RemoteException {
         try {
-            java.rmi.server.RemoteCall call = ref.newCall((java.rmi.server.RemoteObject) this, operations, 2, interfaceHash);
+            StreamRemoteCall call = (StreamRemoteCall)ref.newCall(this, operations, 2, interfaceHash);
             try {
                 java.io.ObjectOutput out = call.getOutputStream();
                 out.writeObject($param_String_1);
@@ -121,9 +125,8 @@
             try {
                 java.io.ObjectInput in = call.getInputStream();
                 $result = (java.rmi.Remote) in.readObject();
-            } catch (java.io.IOException e) {
-                throw new java.rmi.UnmarshalException("error unmarshalling return", e);
-            } catch (java.lang.ClassNotFoundException e) {
+            } catch (ClassCastException | IOException | ClassNotFoundException e) {
+                call.discardPendingRefs();
                 throw new java.rmi.UnmarshalException("error unmarshalling return", e);
             } finally {
                 ref.done(call);
@@ -144,7 +147,7 @@
     public void rebind(java.lang.String $param_String_1, java.rmi.Remote $param_Remote_2)
             throws java.rmi.AccessException, java.rmi.RemoteException {
         try {
-            java.rmi.server.RemoteCall call = ref.newCall((java.rmi.server.RemoteObject) this, operations, 3, interfaceHash);
+            StreamRemoteCall call = (StreamRemoteCall)ref.newCall(this, operations, 3, interfaceHash);
             try {
                 java.io.ObjectOutput out = call.getOutputStream();
                 out.writeObject($param_String_1);
@@ -167,7 +170,7 @@
     public void unbind(java.lang.String $param_String_1)
             throws java.rmi.AccessException, java.rmi.NotBoundException, java.rmi.RemoteException {
         try {
-            java.rmi.server.RemoteCall call = ref.newCall((java.rmi.server.RemoteObject) this, operations, 4, interfaceHash);
+            StreamRemoteCall call = (StreamRemoteCall)ref.newCall(this, operations, 4, interfaceHash);
             try {
                 java.io.ObjectOutput out = call.getOutputStream();
                 out.writeObject($param_String_1);
--- a/src/java.rmi/share/classes/sun/rmi/server/ActivatableServerRef.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.rmi/share/classes/sun/rmi/server/ActivatableServerRef.java	Wed Oct 23 14:01:17 2019 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2003, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -38,6 +38,7 @@
  *
  * @author Ann Wollrath
  */
+@SuppressWarnings("serial") // Externalizable class w/o no-arg c'tor
 public class ActivatableServerRef extends UnicastServerRef2 {
 
     private static final long serialVersionUID = 2002967993223003793L;
--- a/src/java.rmi/share/classes/sun/rmi/server/Activation.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.rmi/share/classes/sun/rmi/server/Activation.java	Wed Oct 23 14:01:17 2019 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -145,9 +145,11 @@
     private static boolean debugExec;
 
     /** maps activation id to its respective group id */
+    @SuppressWarnings("serial") // Conditionally serializable
     private Map<ActivationID,ActivationGroupID> idTable =
         new ConcurrentHashMap<>();
     /** maps group id to its GroupEntry groups */
+    @SuppressWarnings("serial") // Conditionally serializable
     private Map<ActivationGroupID,GroupEntry> groupTable =
         new ConcurrentHashMap<>();
 
@@ -297,6 +299,7 @@
 
         private static final String NAME = ActivationSystem.class.getName();
         private static final long serialVersionUID = 4877330021609408794L;
+        @SuppressWarnings("serial") // Not statically typed as Serializable
         private ActivationSystem systemStub = null;
 
         SystemRegistryImpl(int port,
@@ -498,6 +501,7 @@
      * with RegistryImpl.checkAccess().
      * The kind of access is retained for an exception if one is thrown.
      */
+    @SuppressWarnings("serial") // Externalizable class w/o no-arg c'tor
     static class SameHostOnlyServerRef extends UnicastServerRef {
         private static final long serialVersionUID = 1234L;
         private String accessKind;      // an exception message
@@ -873,7 +877,9 @@
         ActivationGroupDesc desc = null;
         ActivationGroupID groupID = null;
         long incarnation = 0;
+        @SuppressWarnings("serial") // Conditionally serializable
         Map<ActivationID,ObjectEntry> objects = new HashMap<>();
+        @SuppressWarnings("serial") // Conditionally serializable
         Set<ActivationID> restartSet = new HashSet<>();
 
         transient ActivationInstantiator group = null;
--- a/src/java.rmi/share/classes/sun/rmi/server/ActivationGroupImpl.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.rmi/share/classes/sun/rmi/server/ActivationGroupImpl.java	Wed Oct 23 14:01:17 2019 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1997, 2018, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -69,6 +69,7 @@
         new Hashtable<>();
     private boolean groupInactive = false;
     private final ActivationGroupID groupID;
+    @SuppressWarnings("serial")  // Conditionally serializable
     private final List<ActivationID> lockedIDs = new ArrayList<>();
 
     /**
--- a/src/java.rmi/share/classes/sun/rmi/transport/DGCImpl_Skel.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.rmi/share/classes/sun/rmi/transport/DGCImpl_Skel.java	Wed Oct 23 14:01:17 2019 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2017, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -25,6 +25,8 @@
 
 package sun.rmi.transport;
 
+import java.io.IOException;
+
 /**
  * Skeleton to dispatch DGC methods.
  * Originally generated by RMIC but frozen to match the stubs.
@@ -43,12 +45,13 @@
         return operations.clone();
     }
 
-    public void dispatch(java.rmi.Remote obj, java.rmi.server.RemoteCall call, int opnum, long hash)
+    public void dispatch(java.rmi.Remote obj, java.rmi.server.RemoteCall remoteCall, int opnum, long hash)
             throws java.lang.Exception {
         if (hash != interfaceHash)
             throw new java.rmi.server.SkeletonMismatchException("interface hash mismatch");
 
         sun.rmi.transport.DGCImpl server = (sun.rmi.transport.DGCImpl) obj;
+        StreamRemoteCall call = (StreamRemoteCall) remoteCall;
         switch (opnum) {
             case 0: // clean(ObjID[], long, VMID, boolean)
             {
@@ -62,9 +65,8 @@
                     $param_long_2 = in.readLong();
                     $param_VMID_3 = (java.rmi.dgc.VMID) in.readObject();
                     $param_boolean_4 = in.readBoolean();
-                } catch (java.io.IOException e) {
-                    throw new java.rmi.UnmarshalException("error unmarshalling arguments", e);
-                } catch (java.lang.ClassNotFoundException e) {
+                } catch (ClassCastException | IOException | ClassNotFoundException e) {
+                    call.discardPendingRefs();
                     throw new java.rmi.UnmarshalException("error unmarshalling arguments", e);
                 } finally {
                     call.releaseInputStream();
@@ -88,9 +90,8 @@
                     $param_arrayOf_ObjID_1 = (java.rmi.server.ObjID[]) in.readObject();
                     $param_long_2 = in.readLong();
                     $param_Lease_3 = (java.rmi.dgc.Lease) in.readObject();
-                } catch (java.io.IOException e) {
-                    throw new java.rmi.UnmarshalException("error unmarshalling arguments", e);
-                } catch (java.lang.ClassNotFoundException e) {
+                } catch (ClassCastException | IOException | ClassNotFoundException e) {
+                    call.discardPendingRefs();
                     throw new java.rmi.UnmarshalException("error unmarshalling arguments", e);
                 } finally {
                     call.releaseInputStream();
--- a/src/java.rmi/share/classes/sun/rmi/transport/DGCImpl_Stub.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.rmi/share/classes/sun/rmi/transport/DGCImpl_Stub.java	Wed Oct 23 14:01:17 2019 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2017, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -25,16 +25,17 @@
 
 package sun.rmi.transport;
 
+import sun.rmi.transport.tcp.TCPConnection;
+
+import java.io.IOException;
 import java.io.ObjectInputFilter;
-import java.io.ObjectInputStream;
+import java.rmi.RemoteException;
 import java.rmi.dgc.Lease;
 import java.rmi.dgc.VMID;
 import java.rmi.server.UID;
 import java.security.AccessController;
 import java.security.PrivilegedAction;
-
-import sun.rmi.server.UnicastRef;
-import sun.rmi.transport.tcp.TCPConnection;
+import java.util.ArrayList;
 
 /**
  * Stubs to invoke DGC remote methods.
@@ -72,7 +73,9 @@
     public void clean(java.rmi.server.ObjID[] $param_arrayOf_ObjID_1, long $param_long_2, java.rmi.dgc.VMID $param_VMID_3, boolean $param_boolean_4)
             throws java.rmi.RemoteException {
         try {
-            java.rmi.server.RemoteCall call = ref.newCall((java.rmi.server.RemoteObject) this, operations, 0, interfaceHash);
+            StreamRemoteCall call = (StreamRemoteCall)ref.newCall((java.rmi.server.RemoteObject) this,
+                    operations, 0, interfaceHash);
+            call.setObjectInputFilter(DGCImpl_Stub::leaseFilter);
             try {
                 java.io.ObjectOutput out = call.getOutputStream();
                 out.writeObject($param_arrayOf_ObjID_1);
@@ -97,7 +100,10 @@
     public java.rmi.dgc.Lease dirty(java.rmi.server.ObjID[] $param_arrayOf_ObjID_1, long $param_long_2, java.rmi.dgc.Lease $param_Lease_3)
             throws java.rmi.RemoteException {
         try {
-            java.rmi.server.RemoteCall call = ref.newCall((java.rmi.server.RemoteObject) this, operations, 1, interfaceHash);
+            StreamRemoteCall call =
+                    (StreamRemoteCall)ref.newCall((java.rmi.server.RemoteObject) this,
+                            operations, 1, interfaceHash);
+            call.setObjectInputFilter(DGCImpl_Stub::leaseFilter);
             try {
                 java.io.ObjectOutput out = call.getOutputStream();
                 out.writeObject($param_arrayOf_ObjID_1);
@@ -108,26 +114,16 @@
             }
             ref.invoke(call);
             java.rmi.dgc.Lease $result;
-            Connection connection = ((StreamRemoteCall) call).getConnection();
+            Connection connection = call.getConnection();
             try {
                 java.io.ObjectInput in = call.getInputStream();
-
-                if (in instanceof ObjectInputStream) {
-                    /**
-                     * Set a filter on the stream for the return value.
-                     */
-                    ObjectInputStream ois = (ObjectInputStream) in;
-                    AccessController.doPrivileged((PrivilegedAction<Void>)() -> {
-                        ois.setObjectInputFilter(DGCImpl_Stub::leaseFilter);
-                        return null;
-                    });
-                }
                 $result = (java.rmi.dgc.Lease) in.readObject();
-            } catch (java.io.IOException | java.lang.ClassNotFoundException e) {
+            } catch (ClassCastException | IOException | ClassNotFoundException e) {
                 if (connection instanceof TCPConnection) {
                     // Modified to prevent re-use of the connection after an exception
                     ((TCPConnection) connection).getChannel().free(connection, false);
                 }
+                call.discardPendingRefs();
                 throw new java.rmi.UnmarshalException("error unmarshalling return", e);
             } finally {
                 ref.done(call);
@@ -146,6 +142,11 @@
      * ObjectInputFilter to filter DGCClient return value (a Lease).
      * The list of acceptable classes is very short and explicit.
      * The depth and array sizes are limited.
+     * <p>
+     * The filter must accept normal and exception returns.
+     * A DGC server may throw exceptions that may have a cause
+     * and suppressed exceptions.
+     * Only exceptions in {@code java.base} and {@code java.rmi} are allowed.
      *
      * @param filterInfo access to class, arrayLength, etc.
      * @return  {@link ObjectInputFilter.Status#ALLOWED} if allowed,
@@ -172,7 +173,14 @@
             }
             return (clazz == UID.class ||
                     clazz == VMID.class ||
-                    clazz == Lease.class)
+                    clazz == Lease.class ||
+                    (Throwable.class.isAssignableFrom(clazz) &&
+                            (Object.class.getModule() == clazz.getModule() ||
+                                    RemoteException.class.getModule() == clazz.getModule())) ||
+                    clazz == StackTraceElement.class ||
+                    clazz == ArrayList.class ||     // for suppressed exceptions, if any
+                    clazz == Object.class ||
+                    clazz.getName().equals("java.util.Collections$EmptyList"))
                     ? ObjectInputFilter.Status.ALLOWED
                     : ObjectInputFilter.Status.REJECTED;
         }
--- a/src/java.rmi/share/classes/sun/rmi/transport/StreamRemoteCall.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.rmi/share/classes/sun/rmi/transport/StreamRemoteCall.java	Wed Oct 23 14:01:17 2019 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1996, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1996, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -29,6 +29,7 @@
 import java.io.DataOutputStream;
 import java.io.IOException;
 import java.io.ObjectInput;
+import java.io.ObjectInputFilter;
 import java.io.ObjectOutput;
 import java.io.StreamCorruptedException;
 import java.rmi.RemoteException;
@@ -36,6 +37,9 @@
 import java.rmi.UnmarshalException;
 import java.rmi.server.ObjID;
 import java.rmi.server.RemoteCall;
+import java.security.AccessController;
+import java.security.PrivilegedAction;
+
 import sun.rmi.runtime.Log;
 import sun.rmi.server.UnicastRef;
 import sun.rmi.transport.tcp.TCPEndpoint;
@@ -50,6 +54,7 @@
     private ConnectionInputStream in = null;
     private ConnectionOutputStream out = null;
     private Connection conn;
+    private ObjectInputFilter filter = null;
     private boolean resultStarted = false;
     private Exception serverException = null;
 
@@ -123,6 +128,13 @@
         }
     }
 
+    public void setObjectInputFilter(ObjectInputFilter filter) {
+        if (in != null) {
+            throw new IllegalStateException("set filter must occur before calling getInputStream");
+        }
+        this.filter = filter;
+    }
+
     /**
      * Get the InputStream the stub/skeleton should get results/arguments
      * from.
@@ -132,6 +144,12 @@
             Transport.transportLog.log(Log.VERBOSE, "getting input stream");
 
             in = new ConnectionInputStream(conn.getInputStream());
+            if (filter != null) {
+                AccessController.doPrivileged((PrivilegedAction<Void>) () -> {
+                    in.setObjectInputFilter(filter);
+                    return null;
+                });
+            }
         }
         return in;
     }
@@ -251,6 +269,7 @@
             try {
                 ex = in.readObject();
             } catch (Exception e) {
+                discardPendingRefs();
                 throw new UnmarshalException("Error unmarshaling return", e);
             }
 
@@ -259,6 +278,7 @@
             if (ex instanceof Exception) {
                 exceptionReceivedFromServer((Exception) ex);
             } else {
+                discardPendingRefs();
                 throw new UnmarshalException("Return type not Exception");
             }
             // Exception is thrown before fallthrough can occur
--- a/src/java.security.jgss/macosx/native/libosxkrb5/nativeccache.c	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.security.jgss/macosx/native/libosxkrb5/nativeccache.c	Wed Oct 23 14:01:17 2019 -0400
@@ -247,6 +247,7 @@
 
     int netypes;
     jint *etypes = NULL;
+    int proxy_flag = 0;
 
     /* Initialize the Kerberos 5 context */
     err = krb5_init_context (&kcontext);
@@ -259,6 +260,48 @@
         err = krb5_cc_set_flags (kcontext, ccache, flags); /* turn off OPENCLOSE */
     }
 
+    // First round read. The proxy_impersonator config flag is not supported.
+    // This ccache will not be used if this flag exists.
+    if (!err) {
+        err = krb5_cc_start_seq_get (kcontext, ccache, &cursor);
+    }
+
+    if (!err) {
+        while ((err = krb5_cc_next_cred (kcontext, ccache, &cursor, &creds)) == 0) {
+            char *serverName = NULL;
+
+            if (!err) {
+                err = krb5_unparse_name (kcontext, creds.server, &serverName);
+                printiferr (err, "while unparsing server name");
+            }
+
+            if (!err) {
+                if (!strcmp(serverName, "krb5_ccache_conf_data/proxy_impersonator@X-CACHECONF:")) {
+                    proxy_flag = 1;
+                }
+            }
+
+            if (serverName != NULL) { krb5_free_unparsed_name (kcontext, serverName); }
+
+            krb5_free_cred_contents (kcontext, &creds);
+
+            if (proxy_flag) break;
+        }
+
+        if (err == KRB5_CC_END) { err = 0; }
+        printiferr (err, "while retrieving a ticket");
+    }
+
+    if (!err) {
+        err = krb5_cc_end_seq_get (kcontext, ccache, &cursor);
+        printiferr (err, "while finishing ticket retrieval");
+    }
+
+    if (proxy_flag) {
+        goto outer_cleanup;
+    }
+    // End of first round read
+
     if (!err) {
         err = krb5_cc_start_seq_get (kcontext, ccache, &cursor);
     }
@@ -388,6 +431,7 @@
         printiferr (err, "while finishing ticket retrieval");
     }
 
+outer_cleanup:
     if (!err) {
         flags = KRB5_TC_OPENCLOSE; /* restore OPENCLOSE mode */
         err = krb5_cc_set_flags (kcontext, ccache, flags);
--- a/src/java.security.jgss/share/classes/javax/security/auth/kerberos/JavaxSecurityAuthKerberosAccessImpl.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.security.jgss/share/classes/javax/security/auth/kerberos/JavaxSecurityAuthKerberosAccessImpl.java	Wed Oct 23 14:01:17 2019 -0400
@@ -49,4 +49,12 @@
     public void kerberosTicketSetServerAlias(KerberosTicket t, KerberosPrincipal a) {
         t.serverAlias = a;
     }
+
+    public KerberosTicket kerberosTicketGetProxy(KerberosTicket t) {
+        return t.proxy;
+    }
+
+    public void kerberosTicketSetProxy(KerberosTicket t, KerberosTicket p) {
+        t.proxy = p;
+    }
 }
--- a/src/java.security.jgss/share/classes/javax/security/auth/kerberos/KerberosTicket.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.security.jgss/share/classes/javax/security/auth/kerberos/KerberosTicket.java	Wed Oct 23 14:01:17 2019 -0400
@@ -29,11 +29,13 @@
 import java.util.Date;
 import java.util.Arrays;
 import java.net.InetAddress;
+import java.util.Objects;
 import javax.crypto.SecretKey;
 import javax.security.auth.Refreshable;
 import javax.security.auth.Destroyable;
 import javax.security.auth.RefreshFailedException;
 import javax.security.auth.DestroyFailedException;
+
 import sun.security.util.HexDumpEncoder;
 
 /**
@@ -190,8 +192,13 @@
      * @serial
      */
 
+    private InetAddress[] clientAddresses;
 
-    private InetAddress[] clientAddresses;
+    /**
+     * Evidence ticket if proxy_impersonator. This field can be accessed
+     * by KerberosSecrets. It's serialized.
+     */
+    KerberosTicket proxy = null;
 
     private transient boolean destroyed = false;
 
@@ -711,6 +718,7 @@
                 "Renew Till = " + String.valueOf(renewTill) + "\n" +
                 "Client Addresses " +
                 (clientAddresses == null ? " Null " : caddrString.toString() +
+                (proxy == null ? "" : "\nwith a proxy ticket") +
                 "\n"));
     }
 
@@ -748,6 +756,10 @@
 
         // clientAddress may be null, the array's hashCode is 0
         result = result * 37 + Arrays.hashCode(clientAddresses);
+
+        if (proxy != null) {
+            result = result * 37 + proxy.hashCode();
+        }
         return result * 37 + Arrays.hashCode(flags);
     }
 
@@ -820,6 +832,10 @@
             }
         }
 
+        if (!Objects.equals(proxy, otherTicket.proxy)) {
+            return false;
+        }
+
         return true;
     }
 
--- a/src/java.security.jgss/share/classes/sun/security/jgss/krb5/Krb5Context.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.security.jgss/share/classes/sun/security/jgss/krb5/Krb5Context.java	Wed Oct 23 14:01:17 2019 -0400
@@ -617,6 +617,8 @@
                     if (myCred == null) {
                         myCred = Krb5InitCredential.getInstance(caller, myName,
                                               GSSCredential.DEFAULT_LIFETIME);
+                        myCred = Krb5ProxyCredential.tryImpersonation(
+                                caller, (Krb5InitCredential)myCred);
                     } else if (!myCred.isInitiatorCredential()) {
                         throw new GSSException(errorCode, -1,
                                            "No TGT available");
@@ -653,8 +655,8 @@
                                     // highly consider just calling:
                                     // Subject.getSubject
                                     // SubjectComber.find
-                                    // instead of Krb5Util.getTicket
-                                    return Krb5Util.getTicket(
+                                    // instead of Krb5Util.getServiceTicket
+                                    return Krb5Util.getServiceTicket(
                                         GSSCaller.CALLER_UNKNOWN,
                                         // since it's useSubjectCredsOnly here,
                                         // don't worry about the null
--- a/src/java.security.jgss/share/classes/sun/security/jgss/krb5/Krb5InitCredential.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.security.jgss/share/classes/sun/security/jgss/krb5/Krb5InitCredential.java	Wed Oct 23 14:01:17 2019 -0400
@@ -57,6 +57,7 @@
     private Krb5NameElement name;
     @SuppressWarnings("serial") // Not statically typed as Serializable
     private Credentials krb5Credentials;
+    public KerberosTicket proxyTicket;
 
     private Krb5InitCredential(Krb5NameElement name,
                                byte[] asn1Encoding,
@@ -175,7 +176,7 @@
         KerberosPrincipal serverAlias = KerberosSecrets
                 .getJavaxSecurityAuthKerberosAccess()
                 .kerberosTicketGetServerAlias(tgt);
-        return new Krb5InitCredential(name,
+        Krb5InitCredential result = new Krb5InitCredential(name,
                                       tgt.getEncoded(),
                                       tgt.getClient(),
                                       clientAlias,
@@ -189,6 +190,9 @@
                                       tgt.getEndTime(),
                                       tgt.getRenewTill(),
                                       tgt.getClientAddresses());
+        result.proxyTicket = KerberosSecrets.getJavaxSecurityAuthKerberosAccess().
+            kerberosTicketGetProxy(tgt);
+        return result;
     }
 
     static Krb5InitCredential getInstance(Krb5NameElement name,
@@ -371,9 +375,9 @@
                 public KerberosTicket run() throws Exception {
                     // It's OK to use null as serverPrincipal. TGT is almost
                     // the first ticket for a principal and we use list.
-                    return Krb5Util.getTicket(
+                    return Krb5Util.getInitialTicket(
                         realCaller,
-                        clientPrincipal, null, acc);
+                        clientPrincipal, acc);
                         }});
         } catch (PrivilegedActionException e) {
             GSSException ge =
--- a/src/java.security.jgss/share/classes/sun/security/jgss/krb5/Krb5MechFactory.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.security.jgss/share/classes/sun/security/jgss/krb5/Krb5MechFactory.java	Wed Oct 23 14:01:17 2019 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -124,6 +124,8 @@
                 usage == GSSCredential.INITIATE_AND_ACCEPT) {
                 credElement = Krb5InitCredential.getInstance
                     (caller, (Krb5NameElement) name, initLifetime);
+                credElement = Krb5ProxyCredential.tryImpersonation(
+                        caller, (Krb5InitCredential)credElement);
                 checkInitCredPermission
                     ((Krb5NameElement) credElement.getName());
             } else if (usage == GSSCredential.ACCEPT_ONLY) {
--- a/src/java.security.jgss/share/classes/sun/security/jgss/krb5/Krb5NameElement.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.security.jgss/share/classes/sun/security/jgss/krb5/Krb5NameElement.java	Wed Oct 23 14:01:17 2019 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -144,7 +144,7 @@
         return new Krb5NameElement(principalName, gssNameStr, gssNameType);
     }
 
-    static Krb5NameElement getInstance(PrincipalName principalName) {
+    public static Krb5NameElement getInstance(PrincipalName principalName) {
         return new Krb5NameElement(principalName,
                                    principalName.getName(),
                                    Krb5MechFactory.NT_GSS_KRB5_PRINCIPAL);
--- a/src/java.security.jgss/share/classes/sun/security/jgss/krb5/Krb5ProxyCredential.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.security.jgss/share/classes/sun/security/jgss/krb5/Krb5ProxyCredential.java	Wed Oct 23 14:01:17 2019 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2012, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2012, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -26,10 +26,17 @@
 package sun.security.jgss.krb5;
 
 import org.ietf.jgss.*;
+import sun.security.jgss.GSSCaller;
 import sun.security.jgss.spi.*;
-import java.util.Date;
+
+import java.io.IOException;
+
+import sun.security.krb5.Credentials;
+import sun.security.krb5.KrbException;
 import sun.security.krb5.internal.Ticket;
 
+import javax.security.auth.kerberos.KerberosTicket;
+
 /**
  * Implements the krb5 proxy credential element used in constrained
  * delegation. It is used in both impersonation (where there is no Kerberos 5
@@ -112,4 +119,24 @@
         throw new GSSException(GSSException.FAILURE, -1,
                 "Only an initiate credentials can impersonate");
     }
+
+    // Try to see if a default credential should act as an impersonator.
+    static Krb5CredElement tryImpersonation(GSSCaller caller,
+            Krb5InitCredential initiator) throws GSSException {
+
+        try {
+            KerberosTicket proxy = initiator.proxyTicket;
+            if (proxy != null) {
+                Credentials proxyCreds = Krb5Util.ticketToCreds(proxy);
+                return new Krb5ProxyCredential(initiator,
+                        Krb5NameElement.getInstance(proxyCreds.getClient()),
+                        proxyCreds.getTicket());
+            } else {
+                return initiator;
+            }
+        } catch (KrbException | IOException e) {
+            throw new GSSException(GSSException.DEFECTIVE_CREDENTIAL, -1,
+                    "Cannot create proxy credential");
+        }
+    }
 }
--- a/src/java.security.jgss/share/classes/sun/security/jgss/krb5/Krb5Util.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.security.jgss/share/classes/sun/security/jgss/krb5/Krb5Util.java	Wed Oct 23 14:01:17 2019 -0400
@@ -60,11 +60,8 @@
     /**
      * Retrieves the ticket corresponding to the client/server principal
      * pair from the Subject in the specified AccessControlContext.
-     * If the ticket can not be found in the Subject, and if
-     * useSubjectCredsOnly is false, then obtain ticket from
-     * a LoginContext.
      */
-    static KerberosTicket getTicket(GSSCaller caller,
+    static KerberosTicket getServiceTicket(GSSCaller caller,
         String clientPrincipal, String serverPrincipal,
         AccessControlContext acc) throws LoginException {
 
@@ -74,11 +71,31 @@
             SubjectComber.find(accSubj, serverPrincipal, clientPrincipal,
                   KerberosTicket.class);
 
+        return ticket;
+    }
+
+    /**
+     * Retrieves the initial TGT corresponding to the client principal
+     * from the Subject in the specified AccessControlContext.
+     * If the ticket can not be found in the Subject, and if
+     * useSubjectCredsOnly is false, then obtain ticket from
+     * a LoginContext.
+     */
+    static KerberosTicket getInitialTicket(GSSCaller caller,
+            String clientPrincipal,
+            AccessControlContext acc) throws LoginException {
+
+        // Try to get ticket from acc's Subject
+        Subject accSubj = Subject.getSubject(acc);
+        KerberosTicket ticket =
+                SubjectComber.find(accSubj, null, clientPrincipal,
+                        KerberosTicket.class);
+
         // Try to get ticket from Subject obtained from GSSUtil
         if (ticket == null && !GSSUtil.useSubjectCredsOnly(caller)) {
             Subject subject = GSSUtil.login(caller, GSSUtil.GSS_KRB5_MECH_OID);
             ticket = SubjectComber.find(subject,
-                serverPrincipal, clientPrincipal, KerberosTicket.class);
+                    null, clientPrincipal, KerberosTicket.class);
         }
         return ticket;
     }
--- a/src/java.security.jgss/share/classes/sun/security/krb5/Credentials.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.security.jgss/share/classes/sun/security/krb5/Credentials.java	Wed Oct 23 14:01:17 2019 -0400
@@ -59,13 +59,23 @@
     KerberosTime endTime;
     KerberosTime renewTill;
     HostAddresses cAddr;
-    EncryptionKey serviceKey;
     AuthorizationData authzData;
     private static boolean DEBUG = Krb5.DEBUG;
     private static CredentialsCache cache;
     static boolean alreadyLoaded = false;
     private static boolean alreadyTried = false;
 
+    private Credentials proxy = null;
+
+    public Credentials getProxy() {
+        return proxy;
+    }
+
+    public Credentials setProxy(Credentials proxy) {
+        this.proxy = proxy;
+        return this;
+    }
+
     // Read native ticket with session key type in the given list
     private static native Credentials acquireDefaultNativeCreds(int[] eTypes);
 
@@ -361,20 +371,19 @@
             return null;
         }
 
-        sun.security.krb5.internal.ccache.Credentials tgtCred  =
-            ccache.getDefaultCreds();
+        Credentials tgtCred = ccache.getInitialCreds();
 
         if (tgtCred == null) {
             return null;
         }
 
-        if (EType.isSupported(tgtCred.getEType())) {
-            return tgtCred.setKrbCreds();
+        if (EType.isSupported(tgtCred.key.getEType())) {
+            return tgtCred;
         } else {
             if (DEBUG) {
                 System.out.println(
                     ">>> unsupported key type found the default TGT: " +
-                    tgtCred.getEType());
+                    tgtCred.key.getEType());
             }
             return null;
         }
@@ -409,20 +418,19 @@
             cache = CredentialsCache.getInstance();
         }
         if (cache != null) {
-            sun.security.krb5.internal.ccache.Credentials temp =
-                cache.getDefaultCreds();
+            Credentials temp = cache.getInitialCreds();
             if (temp != null) {
                 if (DEBUG) {
                     System.out.println(">>> KrbCreds found the default ticket"
                             + " granting ticket in credential cache.");
                 }
-                if (EType.isSupported(temp.getEType())) {
-                    result = temp.setKrbCreds();
+                if (EType.isSupported(temp.key.getEType())) {
+                    result = temp;
                 } else {
                     if (DEBUG) {
                         System.out.println(
                             ">>> unsupported key type found the default TGT: " +
-                            temp.getEType());
+                            temp.key.getEType());
                     }
                 }
             }
@@ -499,10 +507,6 @@
         return cache;
     }
 
-    public EncryptionKey getServiceKey() {
-        return serviceKey;
-    }
-
     /*
      * Prints out debug info.
      */
--- a/src/java.security.jgss/share/classes/sun/security/krb5/JavaxSecurityAuthKerberosAccess.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.security.jgss/share/classes/sun/security/krb5/JavaxSecurityAuthKerberosAccess.java	Wed Oct 23 14:01:17 2019 -0400
@@ -28,8 +28,6 @@
 import javax.security.auth.kerberos.KerberosPrincipal;
 import javax.security.auth.kerberos.KerberosTicket;
 import javax.security.auth.kerberos.KeyTab;
-import sun.security.krb5.EncryptionKey;
-import sun.security.krb5.PrincipalName;
 
 /**
  * An unsafe tunnel to get non-public access to classes in the
@@ -49,4 +47,13 @@
     public KerberosPrincipal kerberosTicketGetServerAlias(KerberosTicket t);
 
     public void kerberosTicketSetServerAlias(KerberosTicket t, KerberosPrincipal a);
+    /**
+     * Returns the proxy for a KerberosTicket.
+     */
+    public KerberosTicket kerberosTicketGetProxy(KerberosTicket t);
+
+    /**
+     * Sets the proxy for a KerberosTicket.
+     */
+    public void kerberosTicketSetProxy(KerberosTicket t, KerberosTicket p);
 }
--- a/src/java.security.jgss/share/classes/sun/security/krb5/Realm.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.security.jgss/share/classes/sun/security/krb5/Realm.java	Wed Oct 23 14:01:17 2019 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -186,7 +186,6 @@
             return false;
         for (int i = 0; i < name.length(); i++) {
             if (name.charAt(i) == '/' ||
-                name.charAt(i) == ':' ||
                 name.charAt(i) == '\0') {
                 return false;
             }
--- a/src/java.security.jgss/share/classes/sun/security/krb5/internal/ccache/CCacheInputStream.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.security.jgss/share/classes/sun/security/krb5/internal/ccache/CCacheInputStream.java	Wed Oct 23 14:01:17 2019 -0400
@@ -325,16 +325,13 @@
     }
 
     /**
-     * Reads the next cred in stream.
-     * @return the next cred, null if ticket or second_ticket unparseable.
+     * Reads the next cred or config entry in stream.
+     * @return the next cred or config entry, null if data unparseable.
      *
-     * Note: MIT krb5 1.8.1 might generate a config entry with server principal
-     * X-CACHECONF:/krb5_ccache_conf_data/fast_avail/krbtgt/REALM@REALM. The
-     * entry is used by KDC to inform the client that it support certain
-     * features. Its ticket is not a valid krb5 ticket and thus this method
-     * returns null.
+     * When data is unparseable, this method makes sure the correct number of
+     * bytes are consumed so it's safe to start reading the next element.
      */
-    Credentials readCred(int version) throws IOException,RealmException, KrbApErrException, Asn1Exception {
+    Object readCred(int version) throws IOException,RealmException, KrbApErrException, Asn1Exception {
         PrincipalName cpname = null;
         try {
             cpname = readPrincipal(version);
@@ -396,12 +393,23 @@
         }
 
         try {
+            if (spname.getRealmString().equals("X-CACHECONF:")) {
+                String[] nameParts = spname.getNameStrings();
+                if (nameParts[0].equals("krb5_ccache_conf_data")) {
+                    return new CredentialsCache.ConfigEntry(nameParts[1],
+                            nameParts.length > 2 ? new PrincipalName(nameParts[2]) : null,
+                            ticketData);
+                }
+            }
             return new Credentials(cpname, spname, key, authtime, starttime,
-                endtime, renewTill, skey, tFlags,
-                addrs, auData,
-                ticketData != null ? new Ticket(ticketData) : null,
-                ticketData2 != null ? new Ticket(ticketData2) : null);
+                    endtime, renewTill, skey, tFlags,
+                    addrs, auData,
+                    ticketData != null ? new Ticket(ticketData) : null,
+                    ticketData2 != null ? new Ticket(ticketData2) : null);
         } catch (Exception e) {     // If any of new Ticket(*) fails.
+            if (DEBUG) {
+                e.printStackTrace(System.out);
+            }
             return null;
         }
     }
--- a/src/java.security.jgss/share/classes/sun/security/krb5/internal/ccache/CCacheOutputStream.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.security.jgss/share/classes/sun/security/krb5/internal/ccache/CCacheOutputStream.java	Wed Oct 23 14:01:17 2019 -0400
@@ -31,7 +31,6 @@
 package sun.security.krb5.internal.ccache;
 
 import java.io.IOException;
-import java.io.FileOutputStream;
 import java.io.OutputStream;
 import sun.security.krb5.internal.util.KrbDataOutputStream;
 import sun.security.krb5.*;
@@ -98,6 +97,21 @@
         writeTicket(creds.secondTicket);
     }
 
+    public void addConfigEntry(PrincipalName cname, CredentialsCache.ConfigEntry e)
+            throws IOException {
+        cname.writePrincipal(this);
+        e.getSName().writePrincipal(this);
+        write16(0); write16(0); write32(0);
+        write32(0); write32(0); write32(0); write32(0);
+        write8(0);
+        write32(0);
+        write32(0);
+        write32(0);
+        write32(e.getData().length);
+        write(e.getData());
+        write32(0);
+    }
+
     void writeTicket(Ticket t) throws IOException, Asn1Exception {
         if (t == null) {
             write32(0);
--- a/src/java.security.jgss/share/classes/sun/security/krb5/internal/ccache/Credentials.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.security.jgss/share/classes/sun/security/krb5/internal/ccache/Credentials.java	Wed Oct 23 14:01:17 2019 -0400
@@ -169,6 +169,18 @@
         return sname;
     }
 
+    public Ticket getTicket() throws RealmException {
+        return ticket;
+    }
+
+    public PrincipalName getServicePrincipal2() throws RealmException {
+        return secondTicket == null ? null : secondTicket.sname;
+    }
+
+    public PrincipalName getClientPrincipal() throws RealmException {
+        return cname;
+    }
+
     public sun.security.krb5.Credentials setKrbCreds() {
         // Note: We will not pass authorizationData to s.s.k.Credentials. The
         // field in that class will be passed to Krb5Context as the return
@@ -209,7 +221,15 @@
         return key.getEType();
     }
 
+    public EncryptionKey getKey() {
+        return key;
+    }
+
     public int getTktEType() {
         return ticket.encPart.getEType();
     }
+
+    public int getTktEType2() {
+        return (secondTicket == null) ? 0 : secondTicket.encPart.getEType();
+    }
 }
--- a/src/java.security.jgss/share/classes/sun/security/krb5/internal/ccache/CredentialsCache.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.security.jgss/share/classes/sun/security/krb5/internal/ccache/CredentialsCache.java	Wed Oct 23 14:01:17 2019 -0400
@@ -32,14 +32,9 @@
 
 import sun.security.krb5.*;
 import sun.security.krb5.internal.*;
-import java.util.StringTokenizer;
-import java.util.Vector;
+
+import java.util.List;
 import java.io.IOException;
-import java.io.File;
-import java.io.FileInputStream;
-import java.io.FileOutputStream;
-import java.io.BufferedReader;
-import java.io.InputStreamReader;
 
 /**
  * CredentialsCache stores credentials(tickets, session keys, etc) in a semi-permanent store
@@ -120,6 +115,62 @@
     public abstract void save() throws IOException, KrbException;
     public abstract Credentials[] getCredsList();
     public abstract Credentials getDefaultCreds();
+    public abstract sun.security.krb5.Credentials getInitialCreds();
     public abstract Credentials getCreds(PrincipalName sname);
     public abstract Credentials getCreds(LoginOptions options, PrincipalName sname);
+    public abstract void addConfigEntry(ConfigEntry e);
+    public abstract List<ConfigEntry> getConfigEntries();
+
+    public ConfigEntry getConfigEntry(String name) {
+        List<ConfigEntry> entries = getConfigEntries();
+        if (entries != null) {
+            for (ConfigEntry e : entries) {
+                if (e.getName().equals(name)) {
+                    return e;
+                }
+            }
+        }
+        return null;
+    }
+
+    public static class ConfigEntry {
+
+        public ConfigEntry(String name, PrincipalName princ, byte[] data) {
+            this.name = name;
+            this.princ = princ;
+            this.data = data;
+        }
+
+        private final String name;
+        private final PrincipalName princ;
+        private final byte[] data; // not worth cloning
+
+        public String getName() {
+            return name;
+        }
+
+        public PrincipalName getPrinc() {
+            return princ;
+        }
+
+        public byte[] getData() {
+            return data;
+        }
+
+        @Override
+        public String toString() {
+            return name + (princ != null ? ("." + princ) : "")
+                    + ": " + new String(data);
+        }
+
+        public PrincipalName getSName() {
+            try {
+                return new PrincipalName("krb5_ccache_conf_data/" + name
+                        + (princ != null ? ("/" + princ) : "")
+                        + "@X-CACHECONF:");
+            } catch (RealmException e) {
+                throw new AssertionError(e);
+            }
+        }
+    }
 }
--- a/src/java.security.jgss/share/classes/sun/security/krb5/internal/ccache/FileCredentialsCache.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.security.jgss/share/classes/sun/security/krb5/internal/ccache/FileCredentialsCache.java	Wed Oct 23 14:01:17 2019 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -36,6 +36,12 @@
 import sun.security.action.GetPropertyAction;
 import sun.security.krb5.*;
 import sun.security.krb5.internal.*;
+import sun.security.util.SecurityProperties;
+
+import java.nio.charset.StandardCharsets;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
 import java.util.StringTokenizer;
 import java.util.Vector;
 import java.io.IOException;
@@ -182,9 +188,13 @@
                 primaryPrincipal = p;
             credentialsList = new Vector<Credentials>();
             while (cis.available() > 0) {
-                Credentials cred = cis.readCred(version);
+                Object cred = cis.readCred(version);
                 if (cred != null) {
-                    credentialsList.addElement(cred);
+                    if (cred instanceof Credentials) {
+                        credentialsList.addElement((Credentials)cred);
+                    } else {
+                        addConfigEntry((CredentialsCache.ConfigEntry)cred);
+                    }
                 }
             }
         }
@@ -255,6 +265,9 @@
                     cos.addCreds(tmp[i]);
                 }
             }
+            for (ConfigEntry e : getConfigEntries()) {
+                cos.addConfigEntry(primaryPrincipal, e);
+            }
         }
     }
 
@@ -307,6 +320,17 @@
         }
     }
 
+    private List<ConfigEntry> configEntries = new ArrayList<>();
+
+    @Override
+    public void addConfigEntry(ConfigEntry e) {
+        configEntries.add(e);
+    }
+
+    @Override
+    public List<ConfigEntry> getConfigEntries() {
+        return Collections.unmodifiableList(configEntries);
+    }
 
     /**
      * Gets a credentials for a specified service.
@@ -326,6 +350,81 @@
         return null;
     }
 
+    public sun.security.krb5.Credentials getInitialCreds() {
+
+        Credentials defaultCreds = getDefaultCreds();
+        if (defaultCreds == null) {
+            return null;
+        }
+        sun.security.krb5.Credentials tgt = defaultCreds.setKrbCreds();
+
+        CredentialsCache.ConfigEntry entry = getConfigEntry("proxy_impersonator");
+        if (entry == null) {
+            if (DEBUG) {
+                System.out.println("get normal credential");
+            }
+            return tgt;
+        }
+
+        boolean force;
+        String prop = SecurityProperties.privilegedGetOverridable(
+                "jdk.security.krb5.default.initiate.credential");
+        if (prop == null) {
+            prop = "always-impersonate";
+        }
+        switch (prop) {
+            case "no-impersonate": // never try impersonation
+                if (DEBUG) {
+                    System.out.println("get normal credential");
+                }
+                return tgt;
+            case "try-impersonate":
+                force = false;
+                break;
+            case "always-impersonate":
+                force = true;
+                break;
+            default:
+                throw new RuntimeException(
+                        "Invalid jdk.security.krb5.default.initiate.credential");
+        }
+
+        try {
+            PrincipalName service = new PrincipalName(
+                    new String(entry.getData(), StandardCharsets.UTF_8));
+            if (!tgt.getClient().equals(service)) {
+                if (DEBUG) {
+                    System.out.println("proxy_impersonator does not match service name");
+                }
+                return force ? null : tgt;
+            }
+            PrincipalName client = getPrimaryPrincipal();
+            Credentials proxy = null;
+            for (Credentials c : getCredsList()) {
+                if (c.getClientPrincipal().equals(client)
+                        && c.getServicePrincipal().equals(service)) {
+                    proxy = c;
+                    break;
+                }
+            }
+            if (proxy == null) {
+                if (DEBUG) {
+                    System.out.println("Cannot find evidence ticket in ccache");
+                }
+                return force ? null : tgt;
+            }
+            if (DEBUG) {
+                System.out.println("Get proxied credential");
+            }
+            return tgt.setProxy(proxy.setKrbCreds());
+        } catch (KrbException e) {
+            if (DEBUG) {
+                System.out.println("Impersonation with ccache failed");
+            }
+            return force ? null : tgt;
+        }
+    }
+
     public Credentials getDefaultCreds() {
         Credentials[] list = getCredsList();
         if (list == null) {
--- a/src/java.security.jgss/windows/classes/sun/security/krb5/internal/tools/Klist.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.security.jgss/windows/classes/sun/security/krb5/internal/tools/Klist.java	Wed Oct 23 14:01:17 2019 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2003, 2018, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2003, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -31,6 +31,8 @@
 package sun.security.krb5.internal.tools;
 
 import java.net.InetAddress;
+import java.util.List;
+
 import sun.security.krb5.*;
 import sun.security.krb5.internal.*;
 import sun.security.krb5.internal.ccache.*;
@@ -249,6 +251,8 @@
                     String endtime;
                     String renewTill;
                     String servicePrincipal;
+                    PrincipalName servicePrincipal2;
+                    String clientPrincipal;
                     if (creds[i].getStartTime() != null) {
                         starttime = format(creds[i].getStartTime());
                     } else {
@@ -260,6 +264,18 @@
                     System.out.println("[" + (i + 1) + "] " +
                                        " Service Principal:  " +
                                        servicePrincipal);
+                    servicePrincipal2 =
+                            creds[i].getServicePrincipal2();
+                    if (servicePrincipal2 != null) {
+                        System.out.println("     Second Service:     "
+                                + servicePrincipal2);
+                    }
+                    clientPrincipal =
+                            creds[i].getClientPrincipal().toString();
+                    if (!clientPrincipal.equals(defaultPrincipal)) {
+                        System.out.println("     Client Principal:   " +
+                                clientPrincipal);
+                    }
                     System.out.println("     Valid starting:     " + starttime);
                     System.out.println("     Expires:            " + endtime);
                     if (creds[i].getRenewTill() != null) {
@@ -270,8 +286,15 @@
                     if (options[0] == 'e') {
                         String eskey = EType.toString(creds[i].getEType());
                         String etkt = EType.toString(creds[i].getTktEType());
-                        System.out.println("     EType (skey, tkt):  "
-                                + eskey + ", " + etkt);
+                        if (creds[i].getTktEType2() == 0) {
+                            System.out.println("     EType (skey, tkt):  "
+                                    + eskey + ", " + etkt);
+                        } else {
+                            String etkt2 = EType.toString(creds[i].getTktEType2());
+                            System.out.println("     EType (skey, tkts): "
+                                    + eskey + ", " + etkt
+                                    + ", " + etkt2);
+                        }
                     }
                     if (options[1] == 'f') {
                         System.out.println("     Flags:              " +
@@ -310,6 +333,15 @@
         } else {
             System.out.println("\nNo entries found.");
         }
+
+        List<CredentialsCache.ConfigEntry> configEntries
+                = cache.getConfigEntries();
+        if (configEntries != null && !configEntries.isEmpty()) {
+            System.out.println("\nConfig entries:");
+            for (CredentialsCache.ConfigEntry e : configEntries) {
+                System.out.println("     " + e);
+            }
+        }
     }
 
     void displayMessage(String target) {
--- a/src/java.xml.crypto/share/classes/org/jcp/xml/dsig/internal/dom/XMLDSigRI.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.xml.crypto/share/classes/org/jcp/xml/dsig/internal/dom/XMLDSigRI.java	Wed Oct 23 14:01:17 2019 -0400
@@ -134,7 +134,8 @@
     }
 
     public XMLDSigRI() {
-        /* We are the XMLDSig provider */
+        // This is the JDK XMLDSig provider, synced from
+        // Apache Santuario XML Security for Java, version 2.1.3
         super("XMLDSig", VER, INFO);
 
         final Provider p = this;
--- a/src/java.xml/share/classes/com/sun/org/apache/xpath/internal/XPath.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.xml/share/classes/com/sun/org/apache/xpath/internal/XPath.java	Wed Oct 23 14:01:17 2019 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2017, 2019, Oracle and/or its affiliates. All rights reserved.
  */
 /*
  * Licensed to the Apache Software Foundation (ASF) under one or more
@@ -40,7 +40,7 @@
  * The XPath class wraps an expression object and provides general services
  * for execution of that expression.
  * @xsl.usage advanced
- * @LastModified: Oct 2017
+ * @LastModified: May 2019
  */
 public class XPath implements Serializable, ExpressionOwner
 {
@@ -179,10 +179,12 @@
     else if (MATCH == type)
       parser.initMatchPattern(compiler, exprString, prefixResolver);
     else
-      throw new RuntimeException(XSLMessages.createXPATHMessage(XPATHErrorResources.ER_CANNOT_DEAL_XPATH_TYPE, new Object[]{Integer.toString(type)})); //"Can not deal with XPath type: " + type);
+      throw new RuntimeException(XSLMessages.createXPATHMessage(
+              XPATHErrorResources.ER_CANNOT_DEAL_XPATH_TYPE,
+              new Object[]{Integer.toString(type)}));
 
     // System.out.println("----------------");
-    Expression expr = compiler.compile(0);
+    Expression expr = compiler.compileExpression(0);
 
     // System.out.println("expr: "+expr);
     this.setExpression(expr);
@@ -234,7 +236,7 @@
             //"Can not deal with XPath type: " + type);
 
     // System.out.println("----------------");
-    Expression expr = compiler.compile(0);
+    Expression expr = compiler.compileExpression(0);
 
     // System.out.println("expr: "+expr);
     this.setExpression(expr);
--- a/src/java.xml/share/classes/com/sun/org/apache/xpath/internal/axes/FilterExprWalker.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.xml/share/classes/com/sun/org/apache/xpath/internal/axes/FilterExprWalker.java	Wed Oct 23 14:01:17 2019 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2017, 2019, Oracle and/or its affiliates. All rights reserved.
  */
 /*
  * Licensed to the Apache Software Foundation (ASF) under one or more
@@ -37,7 +37,7 @@
  * Walker for the OP_VARIABLE, or OP_EXTFUNCTION, or OP_FUNCTION, or OP_GROUP,
  * op codes.
  * @see <a href="http://www.w3.org/TR/xpath#NT-FilterExpr">XPath FilterExpr descriptions</a>
- * @LastModified: Oct 2017
+ * @LastModified: May 2019
  */
 public class FilterExprWalker extends AxesWalker
 {
@@ -77,7 +77,7 @@
         m_mustHardReset = true;
     case OpCodes.OP_GROUP :
     case OpCodes.OP_VARIABLE :
-      m_expr = compiler.compile(opPos);
+      m_expr = compiler.compileExpression(opPos);
       m_expr.exprSetParent(this);
       //if((OpCodes.OP_FUNCTION == stepType) && (m_expr instanceof com.sun.org.apache.xalan.internal.templates.FuncKey))
       if(m_expr instanceof com.sun.org.apache.xpath.internal.operations.Variable)
@@ -87,7 +87,7 @@
       }
       break;
     default :
-      m_expr = compiler.compile(opPos + 2);
+      m_expr = compiler.compileExpression(opPos + 2);
       m_expr.exprSetParent(this);
     }
 //    if(m_expr instanceof WalkingIterator)
--- a/src/java.xml/share/classes/com/sun/org/apache/xpath/internal/axes/WalkerFactory.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.xml/share/classes/com/sun/org/apache/xpath/internal/axes/WalkerFactory.java	Wed Oct 23 14:01:17 2019 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2017, 2019, Oracle and/or its affiliates. All rights reserved.
  */
 /*
  * Licensed to the Apache Software Foundation (ASF) under one or more
@@ -41,7 +41,7 @@
  * which are built from the opcode map output, and an analysis engine
  * for the location path expressions in order to provide optimization hints.
  *
- * @LastModified: Oct 2017
+ * @LastModified: May 2019
  */
 public class WalkerFactory
 {
@@ -1008,10 +1008,10 @@
       case OpCodes.OP_EXTFUNCTION :
       case OpCodes.OP_FUNCTION :
       case OpCodes.OP_GROUP :
-        expr = compiler.compile(opPos);
+        expr = compiler.compileExpression(opPos);
         break;
       default :
-        expr = compiler.compile(opPos + 2);
+        expr = compiler.compileExpression(opPos + 2);
       }
 
       axis = Axis.FILTEREDLIST;
--- a/src/java.xml/share/classes/com/sun/org/apache/xpath/internal/compiler/Compiler.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.xml/share/classes/com/sun/org/apache/xpath/internal/compiler/Compiler.java	Wed Oct 23 14:01:17 2019 -0400
@@ -1,6 +1,5 @@
 /*
- * reserved comment block
- * DO NOT REMOVE OR ALTER!
+ * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
  */
 /*
  * Licensed to the Apache Software Foundation (ASF) under one or more
@@ -70,9 +69,12 @@
  * of operation codes (op map) and then builds from that into an Expression
  * tree.
  * @xsl.usage advanced
+ * @LastModified: May 2019
  */
 public class Compiler extends OpMap
 {
+  // count the number of operations or calls to compileOperation
+  int countOp;
 
   /**
    * Construct a Compiler object with a specific ErrorListener and
@@ -106,15 +108,40 @@
 
   /**
    * Execute the XPath object from a given opcode position.
+   *
+   * Note that this method is added so that when StackOverflowError is caught
+   * the address space can be freed to this point allowing further activities
+   * such as reporting the error.
+   *
    * @param opPos The current position in the xpath.m_opMap array.
    * @return The result of the XPath.
    *
    * @throws TransformerException if there is a syntax or other error.
    * @xsl.usage advanced
    */
-  public Expression compile(int opPos) throws TransformerException
+   public Expression compileExpression(int opPos) throws TransformerException
+   {
+       try {
+           countOp = 0;
+           return compile(opPos);
+       } catch (StackOverflowError sof) {
+           error(XPATHErrorResources.ER_COMPILATION_TOO_MANY_OPERATION, new Object[]{countOp});
+       }
+       return null;
+   }
+
+  /**
+   * This method handles the actual compilation process. It is called from the
+   * compileExpression method as well as the subsequent processes. See the note
+   * for compileExpression.
+   *
+   * @param opPos The current position in the xpath.m_opMap array.
+   * @return The result of the XPath.
+   *
+   * @throws TransformerException if there is a syntax or other error.
+   */
+  private Expression compile(int opPos) throws TransformerException
   {
-
     int op = getOp(opPos);
 
     Expression expr = null;
@@ -210,6 +237,7 @@
   private Expression compileOperation(Operation operation, int opPos)
           throws TransformerException
   {
+    ++countOp;
 
     int leftPos = getFirstChildPos(opPos);
     int rightPos = getNextOpPos(leftPos);
--- a/src/java.xml/share/classes/com/sun/org/apache/xpath/internal/compiler/XPathParser.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.xml/share/classes/com/sun/org/apache/xpath/internal/compiler/XPathParser.java	Wed Oct 23 14:01:17 2019 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2017, 2019, Oracle and/or its affiliates. All rights reserved.
  */
 /*
  * Licensed to the Apache Software Foundation (ASF) under one or more
@@ -34,6 +34,7 @@
  * Tokenizes and parses XPath expressions. This should really be named
  * XPathParserImpl, and may be renamed in the future.
  * @xsl.usage general
+ * @LastModified: May 2019
  */
 public class XPathParser
 {
@@ -71,6 +72,9 @@
   protected final static int FILTER_MATCH_PRIMARY    = 1;
   protected final static int FILTER_MATCH_PREDICATES = 2;
 
+  // counts open predicates
+  private int countPredicate;
+
   /**
    * The parser constructor.
    */
@@ -157,6 +161,9 @@
           }
           else
                 throw e;
+    } catch (StackOverflowError sof) {
+        error(XPATHErrorResources.ER_PREDICATE_TOO_MANY_OPEN,
+              new Object[]{m_token, m_queueMark, countPredicate});
     }
 
     compiler.shrink();
@@ -190,7 +197,12 @@
     m_ops.setOp(OpMap.MAPINDEX_LENGTH, 2);
 
     nextToken();
-    Pattern();
+    try {
+        Pattern();
+    } catch (StackOverflowError sof) {
+        error(XPATHErrorResources.ER_PREDICATE_TOO_MANY_OPEN,
+              new Object[]{m_token, m_queueMark, countPredicate});
+    }
 
     if (null != m_token)
     {
@@ -741,7 +753,7 @@
    */
   protected void Expr() throws javax.xml.transform.TransformerException
   {
-    OrExpr();
+       OrExpr();
   }
 
   /**
@@ -1883,11 +1895,12 @@
    */
   protected void Predicate() throws javax.xml.transform.TransformerException
   {
-
     if (tokenIs('['))
     {
+      countPredicate++;
       nextToken();
       PredicateExpr();
+      countPredicate--;
       consumeExpected(']');
     }
   }
--- a/src/java.xml/share/classes/com/sun/org/apache/xpath/internal/res/XPATHErrorResources.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/java.xml/share/classes/com/sun/org/apache/xpath/internal/res/XPATHErrorResources.java	Wed Oct 23 14:01:17 2019 -0400
@@ -1,6 +1,5 @@
 /*
- * reserved comment block
- * DO NOT REMOVE OR ALTER!
+ * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
  */
 /*
  * Licensed to the Apache Software Foundation (ASF) under one or more
@@ -32,6 +31,7 @@
   * Also you need to  update the count of messages(MAX_CODE)or
  * the count of warnings(MAX_WARNING) [ Information purpose only]
  * @xsl.usage advanced
+ * @LastModified: May 2019
  */
 public class XPATHErrorResources extends ListResourceBundle
 {
@@ -150,6 +150,10 @@
          "ER_FOUND_COMMA_BUT_NO_FOLLOWING_ARG";
   public static final String ER_PREDICATE_ILLEGAL_SYNTAX =
          "ER_PREDICATE_ILLEGAL_SYNTAX";
+  public static final String ER_PREDICATE_TOO_MANY_OPEN =
+         "ER_PREDICATE_TOO_MANY_OPEN";
+  public static final String ER_COMPILATION_TOO_MANY_OPERATION =
+         "ER_COMPILATION_TOO_MANY_OPERATION";
   public static final String ER_ILLEGAL_AXIS_NAME = "ER_ILLEGAL_AXIS_NAME";
   public static final String ER_UNKNOWN_NODETYPE = "ER_UNKNOWN_NODETYPE";
   public static final String ER_PATTERN_LITERAL_NEEDS_BE_QUOTED =
@@ -464,6 +468,12 @@
   { ER_PREDICATE_ILLEGAL_SYNTAX,
       "'..[predicate]' or '.[predicate]' is illegal syntax.  Use 'self::node()[predicate]' instead."},
 
+  { ER_PREDICATE_TOO_MANY_OPEN,
+      "Stack overflow while parsing {0} at {1}. Too many open predicates({2})."},
+
+  { ER_COMPILATION_TOO_MANY_OPERATION,
+      "Stack overflow while compiling the expression. Too many operations({0})."},
+
   { ER_ILLEGAL_AXIS_NAME,
      "illegal axis name: {0}"},
 
--- a/src/jdk.compiler/share/classes/com/sun/source/tree/CaseTree.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/jdk.compiler/share/classes/com/sun/source/tree/CaseTree.java	Wed Oct 23 14:01:17 2019 -0400
@@ -55,17 +55,25 @@
     ExpressionTree getExpression();
 
     /**
+     * {@preview Associated with switch expressions, a preview feature of
+     *           the Java language.
+     *
+     *           This method is associated with <i>switch expressions</i>, a preview
+     *           feature of the Java language. Preview features
+     *           may be removed in a future release, or upgraded to permanent
+     *           features of the Java language.}
+     *
      * Returns the labels for this case.
      * For default case, returns an empty list.
      *
      * @return labels for this case
      * @since 12
      *
-     * @deprecated This method is modeling a case with multiple labels,
+     * @preview This method is modeling a case with multiple labels,
      * which is part of a preview feature and may be removed
      * if the preview feature is removed.
      */
-    @Deprecated(forRemoval=true, since="12")
+    @jdk.internal.PreviewFeature(feature=jdk.internal.PreviewFeature.Feature.SWITCH_EXPRESSIONS)
     List<? extends ExpressionTree> getExpressions();
 
     /**
@@ -78,6 +86,14 @@
     List<? extends StatementTree> getStatements();
 
     /**
+     * {@preview Associated with switch expressions, a preview feature of
+     *           the Java language.
+     *
+     *           This method is associated with <i>switch expressions</i>, a preview
+     *           feature of the Java language. Preview features
+     *           may be removed in a future release, or upgraded to permanent
+     *           features of the Java language.}
+     *
      * For case with kind {@linkplain CaseKind#RULE},
      * returns the statement or expression after the arrow.
      * Returns {@code null} for case with kind
@@ -85,32 +101,41 @@
      *
      * @return case value or null
      * @since 12
-     *
-     * @deprecated This method is modeling a rule case,
-     * which is part of a preview feature and may be removed
-     * if the preview feature is removed.
      */
-    @Deprecated(forRemoval=true, since="12")
+    @jdk.internal.PreviewFeature(feature=jdk.internal.PreviewFeature.Feature.SWITCH_EXPRESSIONS)
     public default Tree getBody() {
         return null;
     }
 
     /**
+     * {@preview Associated with switch expressions, a preview feature of
+     *           the Java language.
+     *
+     *           This method is associated with <i>switch expressions</i>, a preview
+     *           feature of the Java language. Preview features
+     *           may be removed in a future release, or upgraded to permanent
+     *           features of the Java language.}
+     *
      * Returns the kind of this case.
      *
      * @return the kind of this case
      * @since 12
-     *
-     * @deprecated This method is used to model a rule case,
-     * which is part of a preview feature and may be removed
-     * if the preview feature is removed.
      */
-    @Deprecated(forRemoval=true, since="12")
+    @jdk.internal.PreviewFeature(feature=jdk.internal.PreviewFeature.Feature.SWITCH_EXPRESSIONS)
+    @SuppressWarnings("preview")
     public default CaseKind getCaseKind() {
         return CaseKind.STATEMENT;
     }
 
     /**
+     * {@preview Associated with switch expressions, a preview feature of
+     *           the Java language.
+     *
+     *           This enum is associated with <i>switch expressions</i>, a preview
+     *           feature of the Java language. Preview features
+     *           may be removed in a future release, or upgraded to permanent
+     *           features of the Java language.}
+     *
      * The syntatic form of this case:
      * <ul>
      *     <li>STATEMENT: {@code case <expression>: <statements>}</li>
@@ -118,12 +143,9 @@
      * </ul>
      *
      * @since 12
-     *
-     * @deprecated This enum is used to model a rule case,
-     * which is part of a preview feature and may be removed
-     * if the preview feature is removed.
      */
-    @Deprecated(forRemoval=true, since="12")
+    @jdk.internal.PreviewFeature(feature=jdk.internal.PreviewFeature.Feature.SWITCH_EXPRESSIONS)
+    @SuppressWarnings("preview")
     public enum CaseKind {
         /**
          * Case is in the form: {@code case <expression>: <statements>}.
--- a/src/jdk.compiler/share/classes/com/sun/source/tree/SwitchExpressionTree.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/jdk.compiler/share/classes/com/sun/source/tree/SwitchExpressionTree.java	Wed Oct 23 14:01:17 2019 -0400
@@ -28,6 +28,14 @@
 import java.util.List;
 
 /**
+ * {@preview Associated with switch expressions, a preview feature of
+ *           the Java language.
+ *
+ *           This interface is associated with <i>switch expressions</i>, a preview
+ *           feature of the Java language. Preview features
+ *           may be removed in a future release, or upgraded to permanent
+ *           features of the Java language.}
+ *
  * A tree node for a {@code switch} expression.
  *
  * For example:
@@ -40,12 +48,8 @@
  * @jls 15.29 Switch Expressions
  *
  * @since 12
- *
- * @deprecated This method is modeling switch expressions,
- * which are part of a preview feature and may be removed
- * if the preview feature is removed.
  */
-@Deprecated(forRemoval=true, since="12")
+@jdk.internal.PreviewFeature(feature=jdk.internal.PreviewFeature.Feature.SWITCH_EXPRESSIONS)
 public interface SwitchExpressionTree extends ExpressionTree {
     /**
      * Returns the expression for the {@code switch} expression.
--- a/src/jdk.compiler/share/classes/com/sun/source/tree/Tree.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/jdk.compiler/share/classes/com/sun/source/tree/Tree.java	Wed Oct 23 14:01:17 2019 -0400
@@ -240,17 +240,20 @@
         SWITCH(SwitchTree.class),
 
         /**
+         * {@preview Associated with switch expressions, a preview feature of
+         *           the Java language.
+         *
+         *           This enum constant is associated with <i>switch expressions</i>, a preview
+         *           feature of the Java language. Preview features
+         *           may be removed in a future release, or upgraded to permanent
+         *           features of the Java language.}
+         *
          * Used for instances of {@link SwitchExpressionTree}.
          *
          * @since 12
-         *
-         * @deprecated
-         * This enum constant is modeling switch expressions,
-         * which are part of a preview feature and may be removed
-         * if the preview feature is removed.
          */
-        @Deprecated(forRemoval=true, since="12")
-        @SuppressWarnings("removal")
+        @jdk.internal.PreviewFeature(feature=jdk.internal.PreviewFeature.Feature.SWITCH_EXPRESSIONS)
+        @SuppressWarnings("preview")
         SWITCH_EXPRESSION(SwitchExpressionTree.class),
 
         /**
@@ -659,17 +662,20 @@
         OTHER(null),
 
         /**
+         * {@preview Associated with switch expressions, a preview feature of
+         *           the Java language.
+         *
+         *           This enum constant is associated with <i>switch expressions</i>, a preview
+         *           feature of the Java language. Preview features
+         *           may be removed in a future release, or upgraded to permanent
+         *           features of the Java language.}
+         *
          * Used for instances of {@link YieldTree}.
          *
          * @since 13
-         *
-         * @deprecated
-         * This enum constant is modeling yield statement,
-         * which are part of a preview feature and may be removed
-         * if the preview feature is removed.
          */
-        @Deprecated(forRemoval=true, since="13")
-        @SuppressWarnings("removal")
+        @jdk.internal.PreviewFeature(feature=jdk.internal.PreviewFeature.Feature.SWITCH_EXPRESSIONS)
+        @SuppressWarnings("preview")
         YIELD(YieldTree.class);
 
 
--- a/src/jdk.compiler/share/classes/com/sun/source/tree/TreeVisitor.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/jdk.compiler/share/classes/com/sun/source/tree/TreeVisitor.java	Wed Oct 23 14:01:17 2019 -0400
@@ -354,20 +354,23 @@
     R visitSwitch(SwitchTree node, P p);
 
     /**
+     * {@preview Associated with switch expressions, a preview feature of
+     *           the Java language.
+     *
+     *           This method is associated with <i>switch expressions</i>, a preview
+     *           feature of the Java language. Preview features
+     *           may be removed in a future release, or upgraded to permanent
+     *           features of the Java language.}
+     *
      * Visits a SwitchExpressionTree node.
      *
      * @param node the node being visited
      * @param p a parameter value
      * @return a result value
      * @since 12
-     *
-     * @deprecated
-     * This method is modeling switch expressions,
-     * which are part of a preview feature and may be removed
-     * if the preview feature is removed.
      */
-    @Deprecated(forRemoval=true, since="12")
-    @SuppressWarnings("removal")
+    @jdk.internal.PreviewFeature(feature=jdk.internal.PreviewFeature.Feature.SWITCH_EXPRESSIONS)
+    @SuppressWarnings("preview")
     R visitSwitchExpression(SwitchExpressionTree node, P p);
 
     /**
@@ -557,18 +560,21 @@
     R visitOther(Tree node, P p);
 
     /**
+     * {@preview Associated with switch expressions, a preview feature of
+     *           the Java language.
+     *
+     *           This method is associated with <i>switch expressions</i>, a preview
+     *           feature of the Java language. Preview features
+     *           may be removed in a future release, or upgraded to permanent
+     *           features of the Java language.}
+     *
      * Visits a YieldTree node.
      * @param node the node being visited
      * @param p a parameter value
      * @return a result value
      * @since 13
-     *
-     * @deprecated
-     * This method is modeling yield statement,
-     * which are part of a preview feature and may be removed
-     * if the preview feature is removed.
      */
-    @Deprecated(forRemoval=true, since="13")
-    @SuppressWarnings("removal")
+    @jdk.internal.PreviewFeature(feature=jdk.internal.PreviewFeature.Feature.SWITCH_EXPRESSIONS)
+    @SuppressWarnings("preview")
     R visitYield(YieldTree node, P p);
 }
--- a/src/jdk.compiler/share/classes/com/sun/source/tree/YieldTree.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/jdk.compiler/share/classes/com/sun/source/tree/YieldTree.java	Wed Oct 23 14:01:17 2019 -0400
@@ -26,6 +26,14 @@
 package com.sun.source.tree;
 
 /**
+ * {@preview Associated with switch expressions, a preview feature of
+ *           the Java language.
+ *
+ *           This method is associated with <i>switch expressions</i>, a preview
+ *           feature of the Java language. Preview features
+ *           may be removed in a future release, or upgraded to permanent
+ *           features of the Java language.}
+ *
  * A tree node for a {@code yield} statement.
  *
  * For example:
@@ -36,12 +44,8 @@
  * @jls section TODO
  *
  * @since 13
- *
- * @deprecated This class is modeling yield from switch expressions,
- * which are part of a preview feature and may be removed if
- * the preview feature is removed.
  */
-@Deprecated(forRemoval=true, since="13")
+@jdk.internal.PreviewFeature(feature=jdk.internal.PreviewFeature.Feature.SWITCH_EXPRESSIONS)
 public interface YieldTree extends StatementTree {
 
     /**
--- a/src/jdk.compiler/share/classes/com/sun/source/util/SimpleTreeVisitor.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/jdk.compiler/share/classes/com/sun/source/util/SimpleTreeVisitor.java	Wed Oct 23 14:01:17 2019 -0400
@@ -264,20 +264,23 @@
     }
 
     /**
+     * {@preview Associated with switch expressions, a preview feature of
+     *           the Java language.
+     *
+     *           This method is associated with <i>switch expressions</i>, a preview
+     *           feature of the Java language. Preview features
+     *           may be removed in a future release, or upgraded to permanent
+     *           features of the Java language.}
+     *
      * {@inheritDoc} This implementation calls {@code defaultAction}.
      *
      * @param node {@inheritDoc}
      * @param p {@inheritDoc}
      * @return  the result of {@code defaultAction}
-     *
-     * @deprecated
-     * This method is modeling switch expressions,
-     * which are part of a preview feature and may be removed
-     * if the preview feature is removed.
      */
     @Override
-    @Deprecated(forRemoval=true, since="12")
-    @SuppressWarnings("removal")
+    @jdk.internal.PreviewFeature(feature=jdk.internal.PreviewFeature.Feature.SWITCH_EXPRESSIONS)
+    @SuppressWarnings("preview")
     public R visitSwitchExpression(SwitchExpressionTree node, P p) {
         return defaultAction(node, p);
     }
@@ -791,8 +794,8 @@
      * @return  the result of {@code defaultAction}
      */
     @Override
-    @Deprecated(forRemoval=true, since="13")
-    @SuppressWarnings("removal")
+    @jdk.internal.PreviewFeature(feature=jdk.internal.PreviewFeature.Feature.SWITCH_EXPRESSIONS)
+    @SuppressWarnings("preview")
     public R visitYield(YieldTree node, P p) {
         return defaultAction(node, p);
     }
--- a/src/jdk.compiler/share/classes/com/sun/source/util/TreeScanner.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/jdk.compiler/share/classes/com/sun/source/util/TreeScanner.java	Wed Oct 23 14:01:17 2019 -0400
@@ -26,7 +26,6 @@
 package com.sun.source.util;
 
 import com.sun.source.tree.*;
-import com.sun.source.tree.CaseTree.CaseKind;
 
 /**
  * A TreeVisitor that visits all the child tree nodes.
@@ -335,20 +334,23 @@
     }
 
     /**
+     * {@preview Associated with switch expressions, a preview feature of
+     *           the Java language.
+     *
+     *           This method is associated with <i>switch expressions</i>, a preview
+     *           feature of the Java language. Preview features
+     *           may be removed in a future release, or upgraded to permanent
+     *           features of the Java language.}
+     *
      * {@inheritDoc} This implementation scans the children in left to right order.
      *
      * @param node  {@inheritDoc}
      * @param p  {@inheritDoc}
      * @return the result of scanning
-     *
-     * @deprecated
-     * This method is modeling switch expressions,
-     * which are part of a preview feature and may be removed
-     * if the preview feature is removed.
      */
     @Override
-    @Deprecated(forRemoval=true, since="12")
-    @SuppressWarnings("removal")
+    @jdk.internal.PreviewFeature(feature=jdk.internal.PreviewFeature.Feature.SWITCH_EXPRESSIONS)
+    @SuppressWarnings("preview")
     public R visitSwitchExpression(SwitchExpressionTree node, P p) {
         R r = scan(node.getExpression(), p);
         r = scanAndReduce(node.getCases(), p, r);
@@ -363,10 +365,10 @@
      * @return the result of scanning
      */
     @Override
-    @SuppressWarnings("removal")
+    @SuppressWarnings("preview")
     public R visitCase(CaseTree node, P p) {
         R r = scan(node.getExpressions(), p);
-        if (node.getCaseKind() == CaseKind.RULE)
+        if (node.getCaseKind() == CaseTree.CaseKind.RULE)
             r = scanAndReduce(node.getBody(), p, r);
         else
             r = scanAndReduce(node.getStatements(), p, r);
@@ -936,20 +938,23 @@
     }
 
     /**
+     * {@preview Associated with switch expressions, a preview feature of
+     *           the Java language.
+     *
+     *           This method is associated with <i>switch expressions</i>, a preview
+     *           feature of the Java language. Preview features
+     *           may be removed in a future release, or upgraded to permanent
+     *           features of the Java language.}
+     *
      * {@inheritDoc} This implementation returns {@code null}.
      *
      * @param node  {@inheritDoc}
      * @param p  {@inheritDoc}
      * @return the result of scanning
-     *
-     * @deprecated
-     * This method is modeling switch expressions,
-     * which are part of a preview feature and may be removed
-     * if the preview feature is removed.
      */
     @Override
-    @Deprecated(forRemoval=true, since="13")
-    @SuppressWarnings("removal")
+    @jdk.internal.PreviewFeature(feature=jdk.internal.PreviewFeature.Feature.SWITCH_EXPRESSIONS)
+    @SuppressWarnings("preview")
     public R visitYield(YieldTree node, P p) {
         return scan(node.getValue(), p);
     }
--- a/src/jdk.compiler/share/classes/com/sun/tools/javac/api/JavacTaskPool.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/jdk.compiler/share/classes/com/sun/tools/javac/api/JavacTaskPool.java	Wed Oct 23 14:01:17 2019 -0400
@@ -52,6 +52,7 @@
 import com.sun.source.util.TaskListener;
 import com.sun.source.util.TreeScanner;
 import com.sun.tools.javac.code.Kinds;
+import com.sun.tools.javac.code.Preview;
 import com.sun.tools.javac.code.Symbol;
 import com.sun.tools.javac.code.Symtab;
 import com.sun.tools.javac.code.Type;
@@ -257,6 +258,8 @@
                 ((ReusableJavaCompiler)ReusableJavaCompiler.instance(this)).clear();
                 Types.instance(this).newRound();
                 Check.instance(this).newRound();
+                Check.instance(this).clear(); //clear mandatory warning handlers
+                Preview.instance(this).clear(); //clear mandatory warning handlers
                 Modules.instance(this).newRound();
                 Annotate.instance(this).newRound();
                 CompileStates.instance(this).clear();
--- a/src/jdk.compiler/share/classes/com/sun/tools/javac/code/Flags.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/jdk.compiler/share/classes/com/sun/tools/javac/code/Flags.java	Wed Oct 23 14:01:17 2019 -0400
@@ -286,7 +286,17 @@
     /**
      * Flag to indicate the given ModuleSymbol is an automatic module.
      */
-    public static final long AUTOMATIC_MODULE = 1L<<52;
+    public static final long AUTOMATIC_MODULE = 1L<<52; //ModuleSymbols only
+
+    /**
+     * Flag to indicate the given PackageSymbol contains any non-.java and non-.class resources.
+     */
+    public static final long HAS_RESOURCE = 1L<<52; //PackageSymbols only
+
+    /**
+     * Flag to indicate the given ParamSymbol has a user-friendly name filled.
+     */
+    public static final long NAME_FILLED = 1L<<52; //ParamSymbols only
 
     /**
      * Flag to indicate the given ModuleSymbol is a system module.
@@ -304,9 +314,9 @@
     public static final long DEPRECATED_REMOVAL = 1L<<55;
 
     /**
-     * Flag to indicate the given PackageSymbol contains any non-.java and non-.class resources.
+     * Flag to indicate the API element in question is for a preview API.
      */
-    public static final long HAS_RESOURCE = 1L<<56;
+    public static final long PREVIEW_API = 1L<<56; //any Symbol kind
 
     /**
      * Flag for synthesized default constructors of anonymous classes that have an enclosing expression.
@@ -320,9 +330,9 @@
     public static final long BODY_ONLY_FINALIZE = 1L<<17; //blocks only
 
     /**
-     * Flag to indicate the given ParamSymbol has a user-friendly name filled.
+     * Flag to indicate the API element in question is for a preview API.
      */
-    public static final long NAME_FILLED = 1L<<58; //ParamSymbols only
+    public static final long PREVIEW_ESSENTIAL_API = 1L<<58; //any Symbol kind
 
     /** Modifier masks.
      */
@@ -441,7 +451,9 @@
         HAS_RESOURCE(Flags.HAS_RESOURCE),
         POTENTIALLY_AMBIGUOUS(Flags.POTENTIALLY_AMBIGUOUS),
         ANONCONSTR_BASED(Flags.ANONCONSTR_BASED),
-        NAME_FILLED(Flags.NAME_FILLED);
+        NAME_FILLED(Flags.NAME_FILLED),
+        PREVIEW_API(Flags.PREVIEW_API),
+        PREVIEW_ESSENTIAL_API(Flags.PREVIEW_ESSENTIAL_API);
 
         Flag(long flag) {
             this.value = flag;
--- a/src/jdk.compiler/share/classes/com/sun/tools/javac/code/Lint.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/jdk.compiler/share/classes/com/sun/tools/javac/code/Lint.java	Wed Oct 23 14:01:17 2019 -0400
@@ -122,6 +122,9 @@
             values.add(LintCategory.OPENS);
             values.add(LintCategory.MODULE);
             values.add(LintCategory.REMOVAL);
+            if (!options.isSet(Option.PREVIEW)) {
+                values.add(LintCategory.PREVIEW);
+            }
         }
 
         // Look for specific overrides
--- a/src/jdk.compiler/share/classes/com/sun/tools/javac/code/Preview.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/jdk.compiler/share/classes/com/sun/tools/javac/code/Preview.java	Wed Oct 23 14:01:17 2019 -0400
@@ -27,7 +27,6 @@
 
 import com.sun.tools.javac.code.Lint.LintCategory;
 import com.sun.tools.javac.code.Source.Feature;
-import com.sun.tools.javac.comp.Infer;
 import com.sun.tools.javac.jvm.Target;
 import com.sun.tools.javac.resources.CompilerProperties.Errors;
 import com.sun.tools.javac.resources.CompilerProperties.Warnings;
@@ -36,17 +35,14 @@
 import com.sun.tools.javac.util.JCDiagnostic.DiagnosticPosition;
 import com.sun.tools.javac.util.JCDiagnostic.Error;
 import com.sun.tools.javac.util.JCDiagnostic.SimpleDiagnosticPosition;
+import com.sun.tools.javac.util.JCDiagnostic.Warning;
 import com.sun.tools.javac.util.Log;
 import com.sun.tools.javac.util.MandatoryWarningHandler;
-import com.sun.tools.javac.util.Name;
 import com.sun.tools.javac.util.Options;
 
 import javax.tools.JavaFileObject;
 import java.util.HashMap;
-import java.util.HashSet;
 import java.util.Map;
-import java.util.Optional;
-import java.util.Set;
 
 import static com.sun.tools.javac.main.Option.PREVIEW;
 
@@ -62,7 +58,7 @@
  */
 public class Preview {
 
-    /** flag: are preview featutres enabled */
+    /** flag: are preview features enabled */
     private final boolean enabled;
 
     /** the diag handler to manage preview feature usage diagnostics */
@@ -151,6 +147,10 @@
         }
     }
 
+    public void reportPreviewWarning(DiagnosticPosition pos, Warning warnKey) {
+        previewHandler.report(pos, warnKey);
+    }
+
     /**
      * Are preview features enabled?
      * @return true, if preview features are enabled.
@@ -206,4 +206,9 @@
     public void reportDeferredDiagnostics() {
         previewHandler.reportDeferredDiagnostic();
     }
+
+    public void clear() {
+        previewHandler.clear();
+    }
+
 }
--- a/src/jdk.compiler/share/classes/com/sun/tools/javac/code/Symbol.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/jdk.compiler/share/classes/com/sun/tools/javac/code/Symbol.java	Wed Oct 23 14:01:17 2019 -0400
@@ -378,6 +378,10 @@
         return (flags_field & DEPRECATED_REMOVAL) != 0;
     }
 
+    public boolean isPreviewApi() {
+        return (flags_field & PREVIEW_API) != 0;
+    }
+
     public boolean isDeprecatableViaAnnotation() {
         switch (getKind()) {
             case LOCAL_VARIABLE:
--- a/src/jdk.compiler/share/classes/com/sun/tools/javac/code/Symtab.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/jdk.compiler/share/classes/com/sun/tools/javac/code/Symtab.java	Wed Oct 23 14:01:17 2019 -0400
@@ -214,6 +214,7 @@
     public final Type documentedType;
     public final Type elementTypeType;
     public final Type functionalInterfaceType;
+    public final Type previewFeatureType;
 
     /** The symbol representing the length field of an array.
      */
@@ -570,6 +571,7 @@
         lambdaMetafactory = enterClass("java.lang.invoke.LambdaMetafactory");
         stringConcatFactory = enterClass("java.lang.invoke.StringConcatFactory");
         functionalInterfaceType = enterClass("java.lang.FunctionalInterface");
+        previewFeatureType = enterClass("jdk.internal.PreviewFeature");
 
         synthesizeEmptyInterfaceIfMissing(autoCloseableType);
         synthesizeEmptyInterfaceIfMissing(cloneableType);
--- a/src/jdk.compiler/share/classes/com/sun/tools/javac/comp/Annotate.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/jdk.compiler/share/classes/com/sun/tools/javac/comp/Annotate.java	Wed Oct 23 14:01:17 2019 -0400
@@ -364,12 +364,17 @@
                     && (toAnnotate.kind == MDL || toAnnotate.owner.kind != MTH)
                     && types.isSameType(c.type, syms.deprecatedType)) {
                 toAnnotate.flags_field |= (Flags.DEPRECATED | Flags.DEPRECATED_ANNOTATION);
-                Attribute fr = c.member(names.forRemoval);
-                if (fr instanceof Attribute.Constant) {
-                    Attribute.Constant v = (Attribute.Constant) fr;
-                    if (v.type == syms.booleanType && ((Integer) v.value) != 0) {
-                        toAnnotate.flags_field |= Flags.DEPRECATED_REMOVAL;
-                    }
+                if (isAttributeTrue(c.member(names.forRemoval))) {
+                    toAnnotate.flags_field |= Flags.DEPRECATED_REMOVAL;
+                }
+            }
+
+            // Note: @Deprecated has no effect on local variables and parameters
+            if (!c.type.isErroneous()
+                    && types.isSameType(c.type, syms.previewFeatureType)) {
+                toAnnotate.flags_field |= Flags.PREVIEW_API;
+                if (isAttributeTrue(c.member(names.essentialAPI))) {
+                    toAnnotate.flags_field |= Flags.PREVIEW_ESSENTIAL_API;
                 }
             }
         }
@@ -397,6 +402,16 @@
             toAnnotate.setDeclarationAttributes(attrs);
         }
     }
+    //where:
+        private boolean isAttributeTrue(Attribute attr) {
+            if (attr instanceof Attribute.Constant) {
+                Attribute.Constant v = (Attribute.Constant) attr;
+                if (v.type == syms.booleanType && ((Integer) v.value) != 0) {
+                    return true;
+                }
+            }
+            return false;
+        }
 
     /**
      * Attribute and store a semantic representation of the annotation tree {@code tree} into the
--- a/src/jdk.compiler/share/classes/com/sun/tools/javac/comp/Attr.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/jdk.compiler/share/classes/com/sun/tools/javac/comp/Attr.java	Wed Oct 23 14:01:17 2019 -0400
@@ -32,7 +32,7 @@
 import javax.lang.model.element.ElementKind;
 import javax.tools.JavaFileObject;
 
-import com.sun.source.tree.CaseTree.CaseKind;
+import com.sun.source.tree.CaseTree;
 import com.sun.source.tree.IdentifierTree;
 import com.sun.source.tree.MemberReferenceTree.ReferenceMode;
 import com.sun.source.tree.MemberSelectTree;
@@ -1486,8 +1486,8 @@
             // check that there are no duplicate case labels or default clauses.
             Set<Object> labels = new HashSet<>(); // The set of case labels.
             boolean hasDefault = false;      // Is there a default label?
-            @SuppressWarnings("removal")
-            CaseKind caseKind = null;
+            @SuppressWarnings("preview")
+            CaseTree.CaseKind caseKind = null;
             boolean wasError = false;
             for (List<JCCase> l = cases; l.nonEmpty(); l = l.tail) {
                 JCCase c = l.head;
@@ -4092,6 +4092,7 @@
                 chk.checkDeprecated(tree.pos(), env.info.scope.owner, sym);
                 chk.checkSunAPI(tree.pos(), sym);
                 chk.checkProfile(tree.pos(), sym);
+                chk.checkPreview(tree.pos(), sym);
             }
 
             // If symbol is a variable, check that its type and
--- a/src/jdk.compiler/share/classes/com/sun/tools/javac/comp/Check.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/jdk.compiler/share/classes/com/sun/tools/javac/comp/Check.java	Wed Oct 23 14:01:17 2019 -0400
@@ -93,6 +93,7 @@
     private final Source source;
     private final Target target;
     private final Profile profile;
+    private final Preview preview;
     private final boolean warnOnAnyAccessToMembers;
 
     // The set of lint options currently in effect. It is initialized
@@ -139,6 +140,7 @@
         syntheticNameChar = target.syntheticNameChar();
 
         profile = Profile.instance(context);
+        preview = Preview.instance(context);
 
         boolean verboseDeprecated = lint.isEnabled(LintCategory.DEPRECATION);
         boolean verboseRemoval = lint.isEnabled(LintCategory.REMOVAL);
@@ -224,6 +226,23 @@
         }
     }
 
+    /** Warn about deprecated symbol.
+     *  @param pos        Position to be used for error reporting.
+     *  @param sym        The deprecated symbol.
+     */
+    void warnPreview(DiagnosticPosition pos, Symbol sym) {
+        warnPreview(pos, Warnings.IsPreview(sym));
+    }
+
+    /** Log a preview warning.
+     *  @param pos        Position to be used for error reporting.
+     *  @param msg        A Warning describing the problem.
+     */
+    public void warnPreview(DiagnosticPosition pos, Warning warnKey) {
+        if (!lint.isSuppressed(LintCategory.PREVIEW))
+            preview.reportPreviewWarning(pos, warnKey);
+    }
+
     /** Warn about unchecked operation.
      *  @param pos        Position to be used for error reporting.
      *  @param msg        A string describing the problem.
@@ -434,6 +453,13 @@
         localClassNameIndexes.clear();
     }
 
+    public void clear() {
+        deprecationHandler.clear();
+        removalHandler.clear();
+        uncheckedHandler.clear();
+        sunApiHandler.clear();
+    }
+
     public void putCompiled(ClassSymbol csym) {
         compiled.put(Pair.of(csym.packge().modle, csym.flatname), csym);
     }
@@ -3290,6 +3316,16 @@
         }
     }
 
+    void checkPreview(DiagnosticPosition pos, Symbol s) {
+        if ((s.flags() & PREVIEW_API) != 0) {
+            if ((s.flags() & PREVIEW_ESSENTIAL_API) != 0 && !preview.isEnabled()) {
+                log.error(pos, Errors.IsPreview(s));
+            } else {
+                deferredLintHandler.report(() -> warnPreview(pos, s));
+            }
+        }
+    }
+
 /* *************************************************************************
  * Check for recursive annotation elements.
  **************************************************************************/
--- a/src/jdk.compiler/share/classes/com/sun/tools/javac/comp/Lower.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/jdk.compiler/share/classes/com/sun/tools/javac/comp/Lower.java	Wed Oct 23 14:01:17 2019 -0400
@@ -30,7 +30,6 @@
 import java.util.function.Function;
 import java.util.stream.Stream;
 
-import com.sun.source.tree.CaseTree.CaseKind;
 import com.sun.tools.javac.code.*;
 import com.sun.tools.javac.code.Kinds.KindSelector;
 import com.sun.tools.javac.code.Scope.WriteableScope;
--- a/src/jdk.compiler/share/classes/com/sun/tools/javac/comp/Resolve.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/jdk.compiler/share/classes/com/sun/tools/javac/comp/Resolve.java	Wed Oct 23 14:01:17 2019 -0400
@@ -2819,6 +2819,7 @@
                                     typeargtypes, allowBoxing,
                                     useVarargs);
         chk.checkDeprecated(pos, env.info.scope.owner, sym);
+        chk.checkPreview(pos, sym);
         return sym;
     }
 
--- a/src/jdk.compiler/share/classes/com/sun/tools/javac/comp/TypeEnter.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/jdk.compiler/share/classes/com/sun/tools/javac/comp/TypeEnter.java	Wed Oct 23 14:01:17 2019 -0400
@@ -1156,19 +1156,26 @@
             JCAnnotation a = al.head;
             if (a.annotationType.type == syms.deprecatedType) {
                 sym.flags_field |= (Flags.DEPRECATED | Flags.DEPRECATED_ANNOTATION);
-                a.args.stream()
-                        .filter(e -> e.hasTag(ASSIGN))
-                        .map(e -> (JCAssign) e)
-                        .filter(assign -> TreeInfo.name(assign.lhs) == names.forRemoval)
-                        .findFirst()
-                        .ifPresent(assign -> {
-                            JCExpression rhs = TreeInfo.skipParens(assign.rhs);
-                            if (rhs.hasTag(LITERAL)
-                                    && Boolean.TRUE.equals(((JCLiteral) rhs).getValue())) {
-                                sym.flags_field |= DEPRECATED_REMOVAL;
-                            }
-                        });
+                setFlagIfAttributeTrue(a, sym, names.forRemoval, DEPRECATED_REMOVAL);
+            } else if (a.annotationType.type == syms.previewFeatureType) {
+                sym.flags_field |= Flags.PREVIEW_API;
+                setFlagIfAttributeTrue(a, sym, names.essentialAPI, PREVIEW_ESSENTIAL_API);
             }
         }
     }
+    //where:
+        private void setFlagIfAttributeTrue(JCAnnotation a, Symbol sym, Name attribute, long flag) {
+            a.args.stream()
+                    .filter(e -> e.hasTag(ASSIGN))
+                    .map(e -> (JCAssign) e)
+                    .filter(assign -> TreeInfo.name(assign.lhs) == attribute)
+                    .findFirst()
+                    .ifPresent(assign -> {
+                        JCExpression rhs = TreeInfo.skipParens(assign.rhs);
+                        if (rhs.hasTag(LITERAL)
+                                && Boolean.TRUE.equals(((JCLiteral) rhs).getValue())) {
+                            sym.flags_field |= flag;
+                        }
+                    });
+        }
 }
--- a/src/jdk.compiler/share/classes/com/sun/tools/javac/file/BaseFileManager.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/jdk.compiler/share/classes/com/sun/tools/javac/file/BaseFileManager.java	Wed Oct 23 14:01:17 2019 -0400
@@ -44,6 +44,7 @@
 import java.nio.file.Path;
 import java.util.Collection;
 import java.util.HashMap;
+import java.util.HashSet;
 import java.util.Iterator;
 import java.util.Map;
 import java.util.Objects;
@@ -173,6 +174,10 @@
     private long lastUsedTime = System.currentTimeMillis();
     protected long deferredCloseTimeout = 0;
 
+    public void clear() {
+        new HashSet<>(options.keySet()).forEach(k -> options.remove(k));
+    }
+
     protected ClassLoader getClassLoader(URL[] urls) {
         ClassLoader thisClassLoader = getClass().getClassLoader();
 
--- a/src/jdk.compiler/share/classes/com/sun/tools/javac/jvm/ClassReader.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/jdk.compiler/share/classes/com/sun/tools/javac/jvm/ClassReader.java	Wed Oct 23 14:01:17 2019 -0400
@@ -1395,20 +1395,27 @@
                     repeatable = proxy;
                 } else if (proxy.type.tsym == syms.deprecatedType.tsym) {
                     sym.flags_field |= (DEPRECATED | DEPRECATED_ANNOTATION);
-                    for (Pair<Name, Attribute> v : proxy.values) {
-                        if (v.fst == names.forRemoval && v.snd instanceof Attribute.Constant) {
-                            Attribute.Constant c = (Attribute.Constant)v.snd;
-                            if (c.type == syms.booleanType && ((Integer)c.value) != 0) {
-                                sym.flags_field |= DEPRECATED_REMOVAL;
-                            }
-                        }
-                    }
+                    setFlagIfAttributeTrue(proxy, sym, names.forRemoval, DEPRECATED_REMOVAL);
+                }  else if (proxy.type.tsym == syms.previewFeatureType.tsym) {
+                    sym.flags_field |= PREVIEW_API;
+                    setFlagIfAttributeTrue(proxy, sym, names.essentialAPI, PREVIEW_ESSENTIAL_API);
                 }
                 proxies.append(proxy);
             }
         }
         annotate.normal(new AnnotationCompleter(sym, proxies.toList()));
     }
+    //where:
+        private void setFlagIfAttributeTrue(CompoundAnnotationProxy proxy, Symbol sym, Name attribute, long flag) {
+            for (Pair<Name, Attribute> v : proxy.values) {
+                if (v.fst == attribute && v.snd instanceof Attribute.Constant) {
+                    Attribute.Constant c = (Attribute.Constant)v.snd;
+                    if (c.type == syms.booleanType && ((Integer)c.value) != 0) {
+                        sym.flags_field |= flag;
+                    }
+                }
+            }
+        }
 
     /** Read parameter annotations.
      */
--- a/src/jdk.compiler/share/classes/com/sun/tools/javac/parser/JavacParser.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/jdk.compiler/share/classes/com/sun/tools/javac/parser/JavacParser.java	Wed Oct 23 14:01:17 2019 -0400
@@ -29,7 +29,7 @@
 import java.util.function.Function;
 import java.util.stream.Collectors;
 
-import com.sun.source.tree.CaseTree.CaseKind;
+import com.sun.source.tree.CaseTree;
 import com.sun.source.tree.MemberReferenceTree.ReferenceMode;
 import com.sun.source.tree.ModuleTree.ModuleKind;
 
@@ -1432,8 +1432,8 @@
         }
         List<JCStatement> stats = null;
         JCTree body = null;
-        @SuppressWarnings("removal")
-        CaseKind kind;
+        @SuppressWarnings("preview")
+        CaseTree.CaseKind kind;
         switch (token.kind) {
             case ARROW:
                 checkSourceLevel(Feature.SWITCH_RULE);
@@ -2897,8 +2897,8 @@
                 nextToken();
                 checkSourceLevel(Feature.SWITCH_MULTIPLE_CASE_LABELS);
             };
-            @SuppressWarnings("removal")
-            CaseKind caseKind;
+            @SuppressWarnings("preview")
+            CaseTree.CaseKind caseKind;
             JCTree body = null;
             if (token.kind == ARROW) {
                 checkSourceLevel(Feature.SWITCH_RULE);
@@ -2922,8 +2922,8 @@
         }
         case DEFAULT: {
             nextToken();
-            @SuppressWarnings("removal")
-            CaseKind caseKind;
+            @SuppressWarnings("preview")
+            CaseTree.CaseKind caseKind;
             JCTree body = null;
             if (token.kind == ARROW) {
                 checkSourceLevel(Feature.SWITCH_RULE);
--- a/src/jdk.compiler/share/classes/com/sun/tools/javac/resources/compiler.properties	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/jdk.compiler/share/classes/com/sun/tools/javac/resources/compiler.properties	Wed Oct 23 14:01:17 2019 -0400
@@ -1775,6 +1775,14 @@
     {0} in {1} has been deprecated and marked for removal
 
 # 0: symbol
+compiler.warn.is.preview=\
+    {0} is an API that is part of a preview feature
+
+# 0: symbol
+compiler.err.is.preview=\
+    {0} is an API that is part of a preview feature
+
+# 0: symbol
 compiler.warn.has.been.deprecated.module=\
     module {0} has been deprecated
 
--- a/src/jdk.compiler/share/classes/com/sun/tools/javac/tree/JCTree.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/jdk.compiler/share/classes/com/sun/tools/javac/tree/JCTree.java	Wed Oct 23 14:01:17 2019 -0400
@@ -47,7 +47,6 @@
 
 import javax.tools.JavaFileManager.Location;
 
-import com.sun.source.tree.CaseTree.CaseKind;
 import com.sun.source.tree.ModuleTree.ModuleKind;
 import com.sun.tools.javac.code.Directive.ExportsDirective;
 import com.sun.tools.javac.code.Directive.OpensDirective;
@@ -1250,17 +1249,17 @@
     public static class JCCase extends JCStatement implements CaseTree {
         //as CaseKind is deprecated for removal (as it is part of a preview feature),
         //using indirection through these fields to avoid unnecessary @SuppressWarnings:
-        @SuppressWarnings("removal")
+        @SuppressWarnings("preview")
         public static final CaseKind STATEMENT = CaseKind.STATEMENT;
-        @SuppressWarnings("removal")
+        @SuppressWarnings("preview")
         public static final CaseKind RULE = CaseKind.RULE;
-        @SuppressWarnings("removal")
+        @SuppressWarnings("preview")
         public final CaseKind caseKind;
         public List<JCExpression> pats;
         public List<JCStatement> stats;
         public JCTree body;
         public boolean completesNormally;
-        protected JCCase(@SuppressWarnings("removal") CaseKind caseKind, List<JCExpression> pats,
+        protected JCCase(@SuppressWarnings("preview") CaseKind caseKind, List<JCExpression> pats,
                          List<JCStatement> stats, JCTree body) {
             Assert.checkNonNull(pats);
             Assert.check(pats.isEmpty() || pats.head != null);
@@ -1277,18 +1276,18 @@
         @Override @DefinedBy(Api.COMPILER_TREE)
         public JCExpression getExpression() { return pats.head; }
         @Override @DefinedBy(Api.COMPILER_TREE)
-        @SuppressWarnings("removal")
+        @SuppressWarnings("preview")
         public List<JCExpression> getExpressions() { return pats; }
         @Override @DefinedBy(Api.COMPILER_TREE)
-        @SuppressWarnings("removal")
+        @SuppressWarnings("preview")
         public List<JCStatement> getStatements() {
             return caseKind == CaseKind.STATEMENT ? stats : null;
         }
         @Override @DefinedBy(Api.COMPILER_TREE)
-        @SuppressWarnings("removal")
+        @SuppressWarnings("preview")
         public JCTree getBody() { return body; }
         @Override @DefinedBy(Api.COMPILER_TREE)
-        @SuppressWarnings("removal")
+        @SuppressWarnings("preview")
         public CaseKind getCaseKind() {
             return caseKind;
         }
@@ -1305,7 +1304,7 @@
     /**
      * A "switch ( ) { }" construction.
      */
-    @SuppressWarnings("removal")
+    @SuppressWarnings("preview")
     public static class JCSwitchExpression extends JCPolyExpression implements SwitchExpressionTree {
         public JCExpression selector;
         public List<JCCase> cases;
@@ -1586,7 +1585,7 @@
     /**
      * A break-with from a switch expression.
      */
-    @SuppressWarnings("removal")
+    @SuppressWarnings("preview")
     public static class JCYield extends JCStatement implements YieldTree {
         public JCExpression value;
         public JCTree target;
@@ -3105,7 +3104,7 @@
         JCLabeledStatement Labelled(Name label, JCStatement body);
         JCSwitch Switch(JCExpression selector, List<JCCase> cases);
         JCSwitchExpression SwitchExpression(JCExpression selector, List<JCCase> cases);
-        JCCase Case(@SuppressWarnings("removal") CaseKind caseKind, List<JCExpression> pat,
+        JCCase Case(@SuppressWarnings("preview") CaseTree.CaseKind caseKind, List<JCExpression> pat,
                     List<JCStatement> stats, JCTree body);
         JCSynchronized Synchronized(JCExpression lock, JCBlock body);
         JCTry Try(JCBlock body, List<JCCatch> catchers, JCBlock finalizer);
--- a/src/jdk.compiler/share/classes/com/sun/tools/javac/tree/Pretty.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/jdk.compiler/share/classes/com/sun/tools/javac/tree/Pretty.java	Wed Oct 23 14:01:17 2019 -0400
@@ -27,7 +27,6 @@
 
 import java.io.*;
 
-import com.sun.source.tree.CaseTree.CaseKind;
 import com.sun.source.tree.MemberReferenceTree.ReferenceMode;
 import com.sun.source.tree.ModuleTree.ModuleKind;
 import com.sun.tools.javac.code.*;
--- a/src/jdk.compiler/share/classes/com/sun/tools/javac/tree/TreeCopier.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/jdk.compiler/share/classes/com/sun/tools/javac/tree/TreeCopier.java	Wed Oct 23 14:01:17 2019 -0400
@@ -144,7 +144,7 @@
     }
 
     @DefinedBy(Api.COMPILER_TREE)
-    @SuppressWarnings("removal")
+    @SuppressWarnings("preview")
     public JCTree visitYield(YieldTree node, P p) {
         JCYield t = (JCYield) node;
         JCExpression value = copy(t.value, p);
@@ -380,7 +380,7 @@
     }
 
     @DefinedBy(Api.COMPILER_TREE)
-    @SuppressWarnings("removal")
+    @SuppressWarnings("preview")
     public JCTree visitSwitchExpression(SwitchExpressionTree node, P p) {
         JCSwitchExpression t = (JCSwitchExpression) node;
         JCExpression selector = copy(t.selector, p);
--- a/src/jdk.compiler/share/classes/com/sun/tools/javac/tree/TreeMaker.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/jdk.compiler/share/classes/com/sun/tools/javac/tree/TreeMaker.java	Wed Oct 23 14:01:17 2019 -0400
@@ -27,7 +27,7 @@
 
 import java.util.Iterator;
 
-import com.sun.source.tree.CaseTree.CaseKind;
+import com.sun.source.tree.CaseTree;
 import com.sun.source.tree.ModuleTree.ModuleKind;
 import com.sun.source.tree.Tree.Kind;
 import com.sun.tools.javac.code.*;
@@ -274,7 +274,7 @@
         return tree;
     }
 
-    public JCCase Case(@SuppressWarnings("removal") CaseKind caseKind, List<JCExpression> pats,
+    public JCCase Case(@SuppressWarnings("preview") CaseTree.CaseKind caseKind, List<JCExpression> pats,
                        List<JCStatement> stats, JCTree body) {
         JCCase tree = new JCCase(caseKind, pats, stats, body);
         tree.pos = pos;
--- a/src/jdk.compiler/share/classes/com/sun/tools/javac/util/MandatoryWarningHandler.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/jdk.compiler/share/classes/com/sun/tools/javac/util/MandatoryWarningHandler.java	Wed Oct 23 14:01:17 2019 -0400
@@ -186,18 +186,18 @@
     /**
      * The log to which to report warnings.
      */
-    private Log log;
+    private final Log log;
 
     /**
      * Whether or not to report individual warnings, or simply to report a
      * single aggregate warning at the end of the compilation.
      */
-    private boolean verbose;
+    private final boolean verbose;
 
     /**
      * The common prefix for all I18N message keys generated by this handler.
      */
-    private String prefix;
+    private final String prefix;
 
     /**
      * A set containing the names of the source files for which specific
@@ -262,4 +262,11 @@
         else
             log.note(file, new Note("compiler", msg, args));
     }
+
+    public void clear() {
+        sourcesWithReportedWarnings = null;
+        deferredDiagnosticKind = null;
+        deferredDiagnosticSource = null;
+        deferredDiagnosticArg = null;
+    }
 }
--- a/src/jdk.compiler/share/classes/com/sun/tools/javac/util/Names.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/jdk.compiler/share/classes/com/sun/tools/javac/util/Names.java	Wed Oct 23 14:01:17 2019 -0400
@@ -86,6 +86,7 @@
     public final Name error;
     public final Name finalize;
     public final Name forRemoval;
+    public final Name essentialAPI;
     public final Name getClass;
     public final Name hasNext;
     public final Name hashCode;
@@ -236,6 +237,7 @@
         error = fromString("<error>");
         finalize = fromString("finalize");
         forRemoval = fromString("forRemoval");
+        essentialAPI = fromString("essentialAPI");
         getClass = fromString("getClass");
         hasNext = fromString("hasNext");
         hashCode = fromString("hashCode");
--- a/src/jdk.hotspot.agent/share/classes/sun/jvm/hotspot/tools/PStack.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/jdk.hotspot.agent/share/classes/sun/jvm/hotspot/tools/PStack.java	Wed Oct 23 14:01:17 2019 -0400
@@ -130,10 +130,19 @@
                          if (c.contains(pc)) {
                             CodeBlob cb = c.findBlobUnsafe(pc);
                             if (cb.isNMethod()) {
-                               names = getJavaNames(th, f.localVariableBase());
-                               // just print compiled code, if can't determine method
-                               if (names == null || names.length == 0) {
-                                  out.println("<Unknown compiled code>");
+                               if (cb.isNativeMethod()) {
+                                  out.print(((CompiledMethod)cb).getMethod().externalNameAndSignature());
+                                  long diff = pc.minus(cb.codeBegin());
+                                  if (diff != 0L) {
+                                    out.print(" + 0x" + Long.toHexString(diff));
+                                  }
+                                  out.println(" (Native method)");
+                               } else {
+                                  names = getJavaNames(th, f.localVariableBase());
+                                  // just print compiled code, if can't determine method
+                                  if (names == null || names.length == 0) {
+                                    out.println("<Unknown compiled code>");
+                                  }
                                }
                             } else if (cb.isBufferBlob()) {
                                out.println("<StubRoutines>");
--- a/src/jdk.internal.vm.ci/share/classes/jdk.vm.ci.hotspot.aarch64/src/jdk/vm/ci/hotspot/aarch64/AArch64HotSpotJVMCIBackendFactory.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/jdk.internal.vm.ci/share/classes/jdk.vm.ci.hotspot.aarch64/src/jdk/vm/ci/hotspot/aarch64/AArch64HotSpotJVMCIBackendFactory.java	Wed Oct 23 14:01:17 2019 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015, 2016, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2015, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -127,8 +127,8 @@
         return new HotSpotConstantReflectionProvider(runtime);
     }
 
-    private static RegisterConfig createRegisterConfig(AArch64HotSpotVMConfig config, TargetDescription target) {
-        return new AArch64HotSpotRegisterConfig(target, config.useCompressedOops);
+    private static RegisterConfig createRegisterConfig(TargetDescription target) {
+        return new AArch64HotSpotRegisterConfig(target);
     }
 
     protected HotSpotCodeCacheProvider createCodeCache(HotSpotJVMCIRuntime runtime, TargetDescription target, RegisterConfig regConfig) {
@@ -167,7 +167,7 @@
                 metaAccess = createMetaAccess(runtime);
             }
             try (InitTimer rt = timer("create RegisterConfig")) {
-                regConfig = createRegisterConfig(config, target);
+                regConfig = createRegisterConfig(target);
             }
             try (InitTimer rt = timer("create CodeCache provider")) {
                 codeCache = createCodeCache(runtime, target, regConfig);
--- a/src/jdk.internal.vm.ci/share/classes/jdk.vm.ci.hotspot.aarch64/src/jdk/vm/ci/hotspot/aarch64/AArch64HotSpotRegisterConfig.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/jdk.internal.vm.ci/share/classes/jdk.vm.ci.hotspot.aarch64/src/jdk/vm/ci/hotspot/aarch64/AArch64HotSpotRegisterConfig.java	Wed Oct 23 14:01:17 2019 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015, 2016, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2015, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -126,11 +126,19 @@
     public static final Register threadRegister = r28;
     public static final Register fp = r29;
 
-    private static final RegisterArray reservedRegisters = new RegisterArray(rscratch1, rscratch2, threadRegister, fp, lr, r31, zr, sp);
+    /**
+     * The heapBaseRegister, i.e. r27, is reserved unconditionally because HotSpot does not intend
+     * to support it as an allocatable register even when compressed oops is off. This register is
+     * excluded from callee-saved register at
+     * cpu/aarch64/sharedRuntime_aarch64.cpp:RegisterSaver::save_live_registers, which may lead to
+     * dereferencing unknown value from the stack at
+     * share/runtime/stackValue.cpp:StackValue::create_stack_value during deoptimization.
+     */
+    private static final RegisterArray reservedRegisters = new RegisterArray(rscratch1, rscratch2, heapBaseRegister, threadRegister, fp, lr, r31, zr, sp);
 
-    private static RegisterArray initAllocatable(Architecture arch, boolean reserveForHeapBase) {
+    private static RegisterArray initAllocatable(Architecture arch) {
         RegisterArray allRegisters = arch.getAvailableValueRegisters();
-        Register[] registers = new Register[allRegisters.size() - reservedRegisters.size() - (reserveForHeapBase ? 1 : 0)];
+        Register[] registers = new Register[allRegisters.size() - reservedRegisters.size()];
         List<Register> reservedRegistersList = reservedRegisters.asList();
 
         int idx = 0;
@@ -139,12 +147,7 @@
                 // skip reserved registers
                 continue;
             }
-            assert !(reg.equals(threadRegister) || reg.equals(fp) || reg.equals(lr) || reg.equals(r31) || reg.equals(zr) || reg.equals(sp));
-            if (reserveForHeapBase && reg.equals(heapBaseRegister)) {
-                // skip heap base register
-                continue;
-            }
-
+            assert !(reg.equals(heapBaseRegister) || reg.equals(threadRegister) || reg.equals(fp) || reg.equals(lr) || reg.equals(r31) || reg.equals(zr) || reg.equals(sp)) : reg;
             registers[idx++] = reg;
         }
 
@@ -152,8 +155,8 @@
         return new RegisterArray(registers);
     }
 
-    public AArch64HotSpotRegisterConfig(TargetDescription target, boolean useCompressedOops) {
-        this(target, initAllocatable(target.arch, useCompressedOops));
+    public AArch64HotSpotRegisterConfig(TargetDescription target) {
+        this(target, initAllocatable(target.arch));
         assert callerSaved.size() >= allocatable.size();
     }
 
--- a/src/jdk.javadoc/share/classes/jdk/javadoc/internal/doclets/toolkit/WorkArounds.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/jdk.javadoc/share/classes/jdk/javadoc/internal/doclets/toolkit/WorkArounds.java	Wed Oct 23 14:01:17 2019 -0400
@@ -332,36 +332,26 @@
     }
 
     //------------------Start of Serializable Implementation---------------------//
-    private final static Map<TypeElement, NewSerializedForm> serializedForms = new HashMap<>();
+    private final Map<TypeElement, NewSerializedForm> serializedForms = new HashMap<>();
 
-    public SortedSet<VariableElement> getSerializableFields(Utils utils, TypeElement klass) {
-        NewSerializedForm sf = serializedForms.get(klass);
-        if (sf == null) {
-            sf = new NewSerializedForm(utils, configuration.docEnv.getElementUtils(), klass);
-            serializedForms.put(klass, sf);
-        }
-        return sf.fields;
+    private NewSerializedForm getSerializedForm(TypeElement typeElem) {
+        return serializedForms.computeIfAbsent(typeElem,
+                te -> new NewSerializedForm(utils, configuration.docEnv.getElementUtils(), te));
     }
 
-    public SortedSet<ExecutableElement>  getSerializationMethods(Utils utils, TypeElement klass) {
-        NewSerializedForm sf = serializedForms.get(klass);
-        if (sf == null) {
-            sf = new NewSerializedForm(utils, configuration.docEnv.getElementUtils(), klass);
-            serializedForms.put(klass, sf);
-        }
-        return sf.methods;
+    public SortedSet<VariableElement> getSerializableFields(TypeElement typeElem) {
+        return getSerializedForm(typeElem).fields;
     }
 
-    public boolean definesSerializableFields(Utils utils, TypeElement klass) {
-        if (!utils.isSerializable(klass) || utils.isExternalizable(klass)) {
+    public SortedSet<ExecutableElement>  getSerializationMethods(TypeElement typeElem) {
+        return getSerializedForm(typeElem).methods;
+    }
+
+    public boolean definesSerializableFields(TypeElement typeElem) {
+        if (!utils.isSerializable(typeElem) || utils.isExternalizable(typeElem)) {
             return false;
         } else {
-            NewSerializedForm sf = serializedForms.get(klass);
-            if (sf == null) {
-                sf = new NewSerializedForm(utils, configuration.docEnv.getElementUtils(), klass);
-                serializedForms.put(klass, sf);
-            }
-            return sf.definesSerializableFields;
+            return getSerializedForm(typeElem).definesSerializableFields;
         }
     }
 
--- a/src/jdk.javadoc/share/classes/jdk/javadoc/internal/doclets/toolkit/util/JavaScriptScanner.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/jdk.javadoc/share/classes/jdk/javadoc/internal/doclets/toolkit/util/JavaScriptScanner.java	Wed Oct 23 14:01:17 2019 -0400
@@ -61,34 +61,8 @@
     public Void visitAttribute(AttributeTree tree, Consumer<DocTreePath> f) {
         String name = tree.getName().toString().toLowerCase(Locale.ENGLISH);
         switch (name) {
-            // See https://www.w3.org/TR/html-markup/global-attributes.html#common.attrs.event-handler
-            case "onabort":  case "onblur":  case "oncanplay":  case "oncanplaythrough":
-            case "onchange":  case "onclick":  case "oncontextmenu":  case "ondblclick":
-            case "ondrag":  case "ondragend":  case "ondragenter":  case "ondragleave":
-            case "ondragover":  case "ondragstart":  case "ondrop":  case "ondurationchange":
-            case "onemptied":  case "onended":  case "onerror":  case "onfocus":  case "oninput":
-            case "oninvalid":  case "onkeydown":  case "onkeypress":  case "onkeyup":
-            case "onload":  case "onloadeddata":  case "onloadedmetadata":  case "onloadstart":
-            case "onmousedown":  case "onmousemove":  case "onmouseout":  case "onmouseover":
-            case "onmouseup":  case "onmousewheel":  case "onpause":  case "onplay":
-            case "onplaying":  case "onprogress":  case "onratechange":  case "onreadystatechange":
-            case "onreset":  case "onscroll":  case "onseeked":  case "onseeking":
-            case "onselect":  case "onshow":  case "onstalled":  case "onsubmit":  case "onsuspend":
-            case "ontimeupdate":  case "onvolumechange":  case "onwaiting":
-
             // See https://www.w3.org/TR/html4/sgml/dtd.html
-            // Most of the attributes that take a %Script are also defined as event handlers
-            // in HTML 5. The one exception is onunload.
-            // case "onchange":  case "onclick":   case "ondblclick":  case "onfocus":
-            // case "onkeydown":  case "onkeypress":  case "onkeyup":  case "onload":
-            // case "onmousedown":  case "onmousemove":  case "onmouseout":  case "onmouseover":
-            // case "onmouseup":  case "onreset":  case "onselect":  case "onsubmit":
-            case "onunload":
-                f.accept(getCurrentPath());
-                break;
-
-            // See https://www.w3.org/TR/html4/sgml/dtd.html
-            //     https://www.w3.org/TR/html5/
+            //     https://www.w3.org/TR/html52/fullindex.html#attributes-table
             // These are all the attributes that take a %URI or a valid URL potentially surrounded
             // by spaces
             case "action":  case "cite":  case "classid":  case "codebase":  case "data":
@@ -102,6 +76,14 @@
                     }
                 }
                 break;
+            // See https://www.w3.org/TR/html52/webappapis.html#events-event-handlers
+            // An event handler has a name, which always starts with "on" and is followed by
+            // the name of the event for which it is intended.
+            default:
+                if (name.startsWith("on")) {
+                    f.accept(getCurrentPath());
+                }
+                break;
         }
         return super.visitAttribute(tree, f);
     }
--- a/src/jdk.javadoc/share/classes/jdk/javadoc/internal/doclets/toolkit/util/Utils.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/jdk.javadoc/share/classes/jdk/javadoc/internal/doclets/toolkit/util/Utils.java	Wed Oct 23 14:01:17 2019 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1999, 2018, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1999, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -417,15 +417,15 @@
     }
 
     public SortedSet<VariableElement> serializableFields(TypeElement aclass) {
-        return configuration.workArounds.getSerializableFields(this, aclass);
+        return configuration.workArounds.getSerializableFields(aclass);
     }
 
     public SortedSet<ExecutableElement> serializationMethods(TypeElement aclass) {
-        return configuration.workArounds.getSerializationMethods(this, aclass);
+        return configuration.workArounds.getSerializationMethods(aclass);
     }
 
     public boolean definesSerializableFields(TypeElement aclass) {
-        return configuration.workArounds.definesSerializableFields(this, aclass);
+        return configuration.workArounds.definesSerializableFields( aclass);
     }
 
     public String modifiersToString(Element e, boolean trailingSpace) {
--- a/src/jdk.jdi/share/classes/com/sun/jdi/InvocationException.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/jdk.jdi/share/classes/com/sun/jdi/InvocationException.java	Wed Oct 23 14:01:17 2019 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1998, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1998, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -36,6 +36,7 @@
 
     private static final long serialVersionUID = 6066780907971918568L;
 
+    @SuppressWarnings("serial") // Not statically typed as Serializable
     ObjectReference exception;
 
     public InvocationException(ObjectReference exception) {
--- a/src/jdk.jdi/share/classes/com/sun/jdi/connect/IllegalConnectorArgumentsException.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/jdk.jdi/share/classes/com/sun/jdi/connect/IllegalConnectorArgumentsException.java	Wed Oct 23 14:01:17 2019 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1998, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1998, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -40,6 +40,7 @@
 
     private static final long serialVersionUID = -3042212603611350941L;
 
+    @SuppressWarnings("serial") // Conditionally serializable
     List<String> names;
 
     /**
--- a/src/jdk.jdi/share/classes/com/sun/jdi/connect/VMStartException.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/jdk.jdi/share/classes/com/sun/jdi/connect/VMStartException.java	Wed Oct 23 14:01:17 2019 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 1998, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1998, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -38,6 +38,7 @@
 
     private static final long serialVersionUID = 6408644824640801020L;
 
+    @SuppressWarnings("serial") // Not statically typed as Serializable
     Process process;
 
     public VMStartException(Process process) {
--- a/src/jdk.jfr/share/classes/jdk/jfr/internal/tool/PrettyWriter.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/jdk.jfr/share/classes/jdk/jfr/internal/tool/PrettyWriter.java	Wed Oct 23 14:01:17 2019 -0400
@@ -57,6 +57,9 @@
  * This class is also used by {@link RecordedObject#toString()}
  */
 public final class PrettyWriter extends EventPrintWriter {
+    private static final Duration MILLSECOND = Duration.ofMillis(1);
+    private static final Duration SECOND = Duration.ofSeconds(1);
+    private static final Duration MINUTE = Duration.ofMinutes(1);
     private static final String TYPE_OLD_OBJECT = Type.TYPES_PREFIX + "OldObject";
     private final static DateTimeFormatter TIME_FORMAT = DateTimeFormatter.ofPattern("HH:mm:ss.SSS");
     private final static Long ZERO = 0L;
@@ -550,19 +553,14 @@
                 println("N/A");
                 return true;
             }
-            double s = d.toNanosPart() / 1000_000_000.0 + d.toSecondsPart();
-            if (s < 1.0) {
-                if (s < 0.001) {
-                    println(String.format("%.3f", s * 1_000_000) + " us");
-                } else {
-                    println(String.format("%.3f", s * 1_000) + " ms");
-                }
+            if(d.compareTo(MILLSECOND) < 0){
+                println(String.format("%.3f us", (double)d.toNanos() / 1_000));
+            } else if(d.compareTo(SECOND) < 0){
+                println(String.format("%.3f ms", (double)d.toNanos() / 1_000_000));
+            } else if(d.compareTo(MINUTE) < 0){
+                println(String.format("%.3f s", (double)d.toMillis() / 1_000));
             } else {
-                if (s < 1000.0) {
-                    println(String.format("%.3f", s) + " s");
-                } else {
-                    println(String.format("%.0f", s) + " s");
-                }
+                println(String.format("%d s", d.toSeconds()));
             }
             return true;
         }
--- a/src/jdk.jfr/share/conf/jfr/default.jfc	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/jdk.jfr/share/conf/jfr/default.jfc	Wed Oct 23 14:01:17 2019 -0400
@@ -689,13 +689,13 @@
     </event>
 
     <event name="jdk.ZStatisticsCounter">
-      <setting name="enabled">true</setting>
-      <setting name="threshold">10 ms</setting>
+      <setting name="enabled">false</setting>
+      <setting name="threshold">0 ms</setting>
     </event>
 
     <event name="jdk.ZStatisticsSampler">
-      <setting name="enabled">true</setting>
-      <setting name="threshold">10 ms</setting>
+      <setting name="enabled">false</setting>
+      <setting name="threshold">0 ms</setting>
     </event>
 
 
--- a/src/jdk.jfr/share/conf/jfr/profile.jfc	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/jdk.jfr/share/conf/jfr/profile.jfc	Wed Oct 23 14:01:17 2019 -0400
@@ -689,13 +689,13 @@
     </event>
 
     <event name="jdk.ZStatisticsCounter">
-      <setting name="threshold">10 ms</setting>
-      <setting name="enabled">true</setting>
+      <setting name="threshold">0 ms</setting>
+      <setting name="enabled">false</setting>
     </event>
 
     <event name="jdk.ZStatisticsSampler">
-      <setting name="enabled">true</setting>
-      <setting name="threshold">10 ms</setting>
+      <setting name="enabled">false</setting>
+      <setting name="threshold">0 ms</setting>
     </event>
 
 
--- a/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/runtime/regexp/JdkRegExp.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/runtime/regexp/JdkRegExp.java	Wed Oct 23 14:01:17 2019 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2010, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -82,6 +82,8 @@
             }
         } catch (final PatternSyntaxException e2) {
             throwParserException("syntax", e2.getMessage());
+        } catch (StackOverflowError e3) {
+            throw new RuntimeException(e3);
         }
     }
 
--- a/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/runtime/regexp/JoniRegExp.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/jdk.scripting.nashorn/share/classes/jdk/nashorn/internal/runtime/regexp/JoniRegExp.java	Wed Oct 23 14:01:17 2019 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2010, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -82,6 +82,8 @@
             }
         } catch (final PatternSyntaxException | JOniException e2) {
             throwParserException("syntax", e2.getMessage());
+        } catch (StackOverflowError e3) {
+            throw new RuntimeException(e3);
         }
     }
 
--- a/src/jdk.security.auth/share/classes/com/sun/security/auth/module/Krb5LoginModule.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/src/jdk.security.auth/share/classes/com/sun/security/auth/module/Krb5LoginModule.java	Wed Oct 23 14:01:17 2019 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -644,6 +644,7 @@
                         // renew if ticket is old.
                         Credentials newCred = renewCredentials(cred);
                         if (newCred != null) {
+                            newCred.setProxy(cred.getProxy());
                             cred = newCred;
                         }
                     }
@@ -1070,6 +1071,10 @@
             // create Kerberos Ticket
             if (isInitiator) {
                 kerbTicket = Krb5Util.credsToTicket(cred);
+                if (cred.getProxy() != null) {
+                    KerberosSecrets.getJavaxSecurityAuthKerberosAccess()
+                            .kerberosTicketSetProxy(kerbTicket,Krb5Util.credsToTicket(cred.getProxy()));
+                }
             }
 
             if (storeKey && encKeys != null) {
--- a/test/hotspot/jtreg/ProblemList.txt	Wed Oct 23 13:53:41 2019 -0400
+++ b/test/hotspot/jtreg/ProblemList.txt	Wed Oct 23 14:01:17 2019 -0400
@@ -108,6 +108,7 @@
 serviceability/sa/ClhsdbJdis.java 8193639 solaris-all
 serviceability/sa/ClhsdbJhisto.java 8193639,8211767 solaris-all,linux-ppc64le,linux-ppc64
 serviceability/sa/ClhsdbJstack.java 8193639 solaris-all
+serviceability/sa/ClhsdbJstackXcompStress.java 8193639,8231635 solaris-all,windows-x64
 serviceability/sa/ClhsdbLongConstant.java 8193639 solaris-all
 serviceability/sa/ClhsdbPmap.java 8193639,8211767 solaris-all,linux-ppc64le,linux-ppc64
 serviceability/sa/ClhsdbPrintAll.java 8193639 solaris-all
--- a/test/hotspot/jtreg/compiler/aot/fingerprint/SelfChangedCDS.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/test/hotspot/jtreg/compiler/aot/fingerprint/SelfChangedCDS.java	Wed Oct 23 14:01:17 2019 -0400
@@ -27,7 +27,7 @@
  * @library /test/lib /
  * @modules java.base/jdk.internal.misc
  *          java.management
- * @requires vm.aot
+ * @requires vm.aot & vm.cds
  * @build compiler.aot.fingerprint.SelfChanged
  *        compiler.aot.AotCompiler
  *
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/hotspot/jtreg/compiler/c2/CompareKlassPointersTest.java	Wed Oct 23 14:01:17 2019 -0400
@@ -0,0 +1,70 @@
+/*
+ * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * @test
+ * @bug 8220416
+ * @summary This test uses a class pointer comparison optimization which was not applied anymore since JDK-6964458 resulting in a better IR.
+ *
+ * @run main/othervm -Xbatch -XX:-TieredCompilation -XX:+IgnoreUnrecognizedVMOptions -XX:+AlwaysIncrementalInline
+ *                   -XX:CompileOnly=compiler.c2.CompareKlassPointersTest::test compiler.c2.CompareKlassPointersTest
+ */
+
+package compiler.c2;
+
+
+
+public class CompareKlassPointersTest {
+
+    static A a;
+
+    public static void main(String[] args) {
+        a = new C();
+        for (int i = 0; i < 10_000; i++) {
+            test();
+        }
+    }
+
+    public static int test() {
+        Object a = getA();
+
+        /*
+         * This check is now optimized away which was not the case before anymore since JDK-6964458:
+         * The klass pointer comparison optimization sees that the check is always false since a and B are always unrelated klasses
+         */
+        if (a instanceof B) {
+            return 1;
+        }
+        return 0;
+    }
+
+    private static Object getA() {
+        return a;
+    }
+}
+
+class A { }
+
+class B { }
+
+class C extends A { }
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/hotspot/jtreg/compiler/escapeAnalysis/TestEliminateAllocation.java	Wed Oct 23 14:01:17 2019 -0400
@@ -0,0 +1,74 @@
+/*
+ * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * @test
+ * @bug 8231412
+ * @summary The enhancement eliminates all allocations in the loop body of test() due to an improved field zeroing elimination dominance check.
+ * @run main/othervm -XX:-TieredCompilation -XX:CompileCommand=compileonly,compiler.escapeAnalysis.TestEliminateAllocation::test
+ *                   compiler.escapeAnalysis.TestEliminateAllocation
+ */
+
+package compiler.escapeAnalysis;
+
+public class TestEliminateAllocation {
+
+    public static int a = 20;
+    public static int b = 30;
+    public static int c = 40;
+
+    public void test() {
+        int i = 0;
+
+        /*
+         * The resulting IR for the loop body contains 2 allocations, one Wrapper and an int array
+         * The array field store in the Wrapper object 'wrapper.arr = arr' cannot be capturued due to an early bail out.
+         * Therefore, the initial value of wrapper.arr is null.
+         * As a result, the escape analysis marks the array allocation as not scalar replaceable:
+         * 'wrapper.arr' which is null is merged with the int array object in the assignment 'wrapper.arr = arr'.
+         * Both null and the int array are treated as different objects. As a result the array allocation cannot be eliminated.
+         *
+         * The new enhancement does not bail out early anymore and therefore escape analysis does not mark it as
+         * not scalar replaceable. This results in elimination of all allocations in this method.
+         */
+        do {
+            int[] arr = new int[] { a / b / c };
+            Wrapper wrapper = new Wrapper();
+            wrapper.setArr(arr);
+            i++;
+        }
+        while (i < 10);
+    }
+
+    public static void main(String[] strArr) {
+        TestEliminateAllocation _instance = new TestEliminateAllocation();
+        for (int i = 0; i < 10_000; i++ ) {
+            _instance.test();
+        }
+    }
+}
+
+class Wrapper {
+    int[] arr;
+    void setArr(int... many) { arr = many; }
+}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/hotspot/jtreg/compiler/loopopts/superword/SuperWordIntermediateUse.java	Wed Oct 23 14:01:17 2019 -0400
@@ -0,0 +1,81 @@
+/*
+ * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/**
+ * @test
+ * @bug 8230062
+ * @summary The IR of this test contains a reduction chain which corresponds to a pack in which the 2nd last element has a usage outside of the optimized loop.
+ *
+ * @run main/othervm -Xbatch -XX:CompileCommand=compileonly,compiler.loopopts.superword.SuperWordIntermediateUse::test
+ *      compiler.loopopts.superword.SuperWordIntermediateUse
+ */
+
+package compiler.loopopts.superword;
+
+public class SuperWordIntermediateUse {
+
+    private int iFld;
+    private int[] iArr = new int[1024];
+
+    public void test() {
+        int local = 4;
+
+        /**
+         * Before unrolling this loop:
+         * iFld:   AddI 1 = -85 + Phi 1
+         * local:  MulI 2 = Phi 1 * LoadI 3
+         *
+         * This loop is now unrolled. 'local' is a reduction. The loop is first copied:
+         * iFldCopy:  AddI C1 = -85 + Phi C1
+         * localCopy: MulI C2 = Phi C1 * LoadI C3
+         *
+         * iFld:   AddI 1 = -85 + Phi 1
+         * local:  MulI 2 = Phi 1 * LoadI 3
+         *
+         * Then, the unnecessary nodes like phis are removed from the original loop by igvn:
+         * (iFldCopy:  AddI C1 = -85 + Phi C1) field store optimized away
+         * localCopy: MulI C2 = Phi C1 * LoadI C3
+         *
+         * iFld:   AddI 1 = -85 + MulI C2
+         * local:  MulI 2 = MulI C2 * LoadI 3 -> Input into Phi C1
+         *
+         *  As a result AddI 1 has an input from MulI C2 which isn't the last operation in the reduction chain
+         *  Phi C1 -> MulI C2 -> MulI 2 -> Phi C1 and therefore not the last element in a pack.
+         *  Additionally, AddI 1 does not belong to the loop being optimized: The store node for iFld is put outside of the loop being optimized.
+         *  This triggers the assertion bug when unrolled at least 4 times which creates packs of at least size 4.
+         */
+        for (int i = 0; i < 1024; i++) {
+            iFld = -85;
+            iFld = iFld + local;
+            local = local * iArr[i];
+            iArr[i] = 3; // Just used to trigger SuperWord optimization
+        }
+    }
+
+    public static void main(String[] strArr) {
+        SuperWordIntermediateUse instance = new SuperWordIntermediateUse();
+        for (int i = 0; i < 1000; i++) {
+            instance.test();
+        }
+    }
+}
--- a/test/hotspot/jtreg/gc/CriticalNativeArgs.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/test/hotspot/jtreg/gc/CriticalNativeArgs.java	Wed Oct 23 14:01:17 2019 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2018, Red Hat, Inc. and/or its affiliates.
+ * Copyright (c) 2018, 2019, Red Hat, Inc. and/or its affiliates.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
@@ -28,7 +28,7 @@
  * @key gc
  * @bug 8199868
  * @library /
- * @requires (os.arch =="x86_64" | os.arch == "amd64") & vm.gc.Epsilon & !vm.graal.enabled
+ * @requires (os.arch =="x86_64" | os.arch == "amd64" | os.arch=="x86" | os.arch=="i386") & vm.gc.Epsilon & !vm.graal.enabled
  * @summary test argument unpacking nmethod wrapper of critical native method
  * @run main/othervm/native -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC -Xcomp -Xmx256M -XX:+CriticalJNINatives gc.CriticalNativeArgs
  */
@@ -38,7 +38,7 @@
  * @key gc
  * @bug 8199868
  * @library /
- * @requires (os.arch =="x86_64" | os.arch == "amd64") & vm.gc.Shenandoah & !vm.graal.enabled
+ * @requires (os.arch =="x86_64" | os.arch == "amd64" | os.arch=="x86" | os.arch=="i386") & vm.gc.Shenandoah & !vm.graal.enabled
  * @summary test argument unpacking nmethod wrapper of critical native method
  * @run main/othervm/native -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:ShenandoahGCMode=passive    -XX:+ShenandoahDegeneratedGC -Xcomp -Xmx512M -XX:+CriticalJNINatives gc.CriticalNativeArgs
  * @run main/othervm/native -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:ShenandoahGCMode=passive    -XX:-ShenandoahDegeneratedGC -Xcomp -Xmx512M -XX:+CriticalJNINatives gc.CriticalNativeArgs
--- a/test/hotspot/jtreg/gc/epsilon/TestAlwaysPretouch.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/test/hotspot/jtreg/gc/epsilon/TestAlwaysPretouch.java	Wed Oct 23 14:01:17 2019 -0400
@@ -26,7 +26,12 @@
  * @key gc
  * @requires vm.gc.Epsilon & !vm.graal.enabled
  * @summary Basic sanity test for Epsilon
- * @run main/othervm -Xmx1g -XX:+AlwaysPreTouch -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC gc.epsilon.TestAlwaysPretouch
+ * @run main/othervm -Xms128m -Xmx1g                     -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC gc.epsilon.TestAlwaysPretouch
+ * @run main/othervm -Xms128m -Xmx1g -XX:-AlwaysPreTouch -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC gc.epsilon.TestAlwaysPretouch
+ * @run main/othervm -Xms128m -Xmx1g -XX:+AlwaysPreTouch -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC gc.epsilon.TestAlwaysPretouch
+ * @run main/othervm          -Xmx1g                     -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC gc.epsilon.TestAlwaysPretouch
+ * @run main/othervm          -Xmx1g -XX:-AlwaysPreTouch -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC gc.epsilon.TestAlwaysPretouch
+ * @run main/othervm          -Xmx1g -XX:+AlwaysPreTouch -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC gc.epsilon.TestAlwaysPretouch
  */
 
 package gc.epsilon;
--- a/test/hotspot/jtreg/gc/shenandoah/TestVerifyJCStress.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/test/hotspot/jtreg/gc/shenandoah/TestVerifyJCStress.java	Wed Oct 23 14:01:17 2019 -0400
@@ -29,14 +29,14 @@
  * @modules java.base/jdk.internal.misc
  *          java.management
  *
- * @run main/othervm -Xmx1g -Xms1g -XX:+IgnoreUnrecognizedVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UnlockDiagnosticVMOptions
+ * @run main/othervm -Xmx1g -Xms1g -XX:+UnlockExperimentalVMOptions -XX:+UnlockDiagnosticVMOptions
  *      -XX:+UseShenandoahGC -XX:ShenandoahGCMode=passive
- *      -XX:+ShenandoahDegeneratedGC -XX:+ShenandoahVerify -XX:+VerifyObjectEquals
+ *      -XX:+ShenandoahDegeneratedGC -XX:+ShenandoahVerify
  *      TestVerifyJCStress
  *
- * @run main/othervm -Xmx1g -Xms1g -XX:+IgnoreUnrecognizedVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UnlockDiagnosticVMOptions
+ * @run main/othervm -Xmx1g -Xms1g -XX:+UnlockExperimentalVMOptions -XX:+UnlockDiagnosticVMOptions
  *      -XX:+UseShenandoahGC -XX:ShenandoahGCMode=passive
- *      -XX:-ShenandoahDegeneratedGC -XX:+ShenandoahVerify -XX:+VerifyObjectEquals
+ *      -XX:-ShenandoahDegeneratedGC -XX:+ShenandoahVerify
  *      TestVerifyJCStress
  */
 
@@ -48,14 +48,14 @@
  * @modules java.base/jdk.internal.misc
  *          java.management
  *
- * @run main/othervm -Xmx1g -Xms1g -XX:+IgnoreUnrecognizedVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UnlockDiagnosticVMOptions
+ * @run main/othervm -Xmx1g -Xms1g -XX:+UnlockExperimentalVMOptions -XX:+UnlockDiagnosticVMOptions
  *      -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=adaptive
- *      -XX:+ShenandoahVerify -XX:+VerifyObjectEquals -XX:+ShenandoahVerifyOptoBarriers
+ *      -XX:+ShenandoahVerify -XX:+IgnoreUnrecognizedVMOptions -XX:+ShenandoahVerifyOptoBarriers
  *      TestVerifyJCStress
  *
- * @run main/othervm -Xmx1g -Xms1g -XX:+IgnoreUnrecognizedVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UnlockDiagnosticVMOptions
+ * @run main/othervm -Xmx1g -Xms1g -XX:+UnlockExperimentalVMOptions -XX:+UnlockDiagnosticVMOptions
  *      -XX:+UseShenandoahGC -XX:ShenandoahGCHeuristics=compact
- *      -XX:+ShenandoahVerify -XX:+VerifyObjectEquals -XX:+ShenandoahVerifyOptoBarriers
+ *      -XX:+ShenandoahVerify -XX:+IgnoreUnrecognizedVMOptions -XX:+ShenandoahVerifyOptoBarriers
  *      TestVerifyJCStress
  */
 
@@ -67,9 +67,9 @@
  * @modules java.base/jdk.internal.misc
  *          java.management
  *
- * @run main/othervm -Xmx1g -Xms1g -XX:+IgnoreUnrecognizedVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UnlockDiagnosticVMOptions
+ * @run main/othervm -Xmx1g -Xms1g -XX:+UnlockExperimentalVMOptions -XX:+UnlockDiagnosticVMOptions
  *      -XX:+UseShenandoahGC -XX:ShenandoahGCMode=traversal
- *      -XX:+ShenandoahVerify -XX:+VerifyObjectEquals -XX:+ShenandoahVerifyOptoBarriers
+ *      -XX:+ShenandoahVerify -XX:+IgnoreUnrecognizedVMOptions -XX:+ShenandoahVerifyOptoBarriers
  *      TestVerifyJCStress
  */
 
--- a/test/hotspot/jtreg/gc/stress/CriticalNativeStress.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/test/hotspot/jtreg/gc/stress/CriticalNativeStress.java	Wed Oct 23 14:01:17 2019 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2018, Red Hat, Inc. and/or its affiliates.
+ * Copyright (c) 2018, 2019, Red Hat, Inc. and/or its affiliates.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
@@ -31,7 +31,7 @@
  * @key gc
  * @bug 8199868
  * @library /
- * @requires (os.arch =="x86_64" | os.arch == "amd64") & vm.gc.Epsilon & !vm.graal.enabled
+ * @requires (os.arch =="x86_64" | os.arch == "amd64" | os.arch=="x86" | os.arch=="i386") & vm.gc.Epsilon & !vm.graal.enabled
  * @summary test argument pinning by nmethod wrapper of critical native method
  * @run main/othervm/native -XX:+UnlockExperimentalVMOptions -XX:+UseEpsilonGC -Xcomp -Xmx1G -XX:+CriticalJNINatives gc.stress.CriticalNativeStress
  */
@@ -41,7 +41,7 @@
  * @key gc
  * @bug 8199868
  * @library /
- * @requires (os.arch =="x86_64" | os.arch == "amd64") & vm.gc.Shenandoah & !vm.graal.enabled
+ * @requires (os.arch =="x86_64" | os.arch == "amd64" | os.arch=="x86" | os.arch=="i386") & vm.gc.Shenandoah & !vm.graal.enabled
  * @summary test argument pinning by nmethod wrapper of critical native method
  * @run main/othervm/native -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:ShenandoahGCMode=passive    -XX:-ShenandoahDegeneratedGC -Xcomp -Xmx512M -XX:+CriticalJNINatives gc.stress.CriticalNativeStress
  * @run main/othervm/native -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -XX:ShenandoahGCMode=passive    -XX:+ShenandoahDegeneratedGC -Xcomp -Xmx512M -XX:+CriticalJNINatives gc.stress.CriticalNativeStress
--- a/test/hotspot/jtreg/runtime/cds/CheckDefaultArchiveFile.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/test/hotspot/jtreg/runtime/cds/CheckDefaultArchiveFile.java	Wed Oct 23 14:01:17 2019 -0400
@@ -25,6 +25,7 @@
  * @test Default CDS archive file
  * @summary JDK platforms/binaries do not support default CDS archive should
  *          not contain classes.jsa in the default location.
+ * @requires vm.cds
  * @library /test/lib
  * @build sun.hotspot.WhiteBox
  * @run driver ClassFileInstaller sun.hotspot.WhiteBox
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/hotspot/jtreg/runtime/exceptionMsgs/NullPointerException/NPEInHiddenTopFrameTest.java	Wed Oct 23 14:01:17 2019 -0400
@@ -0,0 +1,84 @@
+/*
+ * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2019 SAP SE. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/**
+ * @test
+ * @summary Test NullPointerException messages thrown in frames that
+ *   are hidden in the backtrace/stackTrace.
+ * @bug 8218628
+ * @library /test/lib
+ * @compile -g NPEInHiddenTopFrameTest.java
+ * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:-ShowHiddenFrames -XX:+ShowCodeDetailsInExceptionMessages NPEInHiddenTopFrameTest hidden
+ * @run main/othervm -XX:+UnlockDiagnosticVMOptions -XX:+ShowHiddenFrames -XX:+ShowCodeDetailsInExceptionMessages NPEInHiddenTopFrameTest visible
+ */
+
+import jdk.test.lib.Asserts;
+
+public class NPEInHiddenTopFrameTest {
+
+    @FunctionalInterface
+    private static interface SomeFunctionalInterface {
+        String someMethod(String a, String b);
+    }
+
+    public static void checkMessage(String expression,
+                                    String obtainedMsg, String expectedMsg) {
+        System.out.println();
+        System.out.println(" source code: " + expression);
+        System.out.println("  thrown msg: " + obtainedMsg);
+        if (obtainedMsg == null && expectedMsg == null) return;
+        System.out.println("expected msg: " + expectedMsg);
+        Asserts.assertEquals(expectedMsg, obtainedMsg);
+    }
+
+    public static void main(String[] args) throws Exception {
+        boolean framesAreHidden = false;
+        if (args.length > 0) {
+            String arg = args[0];
+            if (arg.equals("hidden")) framesAreHidden = true;
+        }
+
+        try {
+            final SomeFunctionalInterface concatter = String::concat;
+            final String nullString = null;
+            if (concatter != null) {
+                // This throws NPE from the lambda expression which is a hidden frame.
+                concatter.someMethod(nullString, "validString");
+            }
+        } catch (NullPointerException e) {
+            checkMessage("concatter.someMethod(nullString, \"validString\");", e.getMessage(),
+                         framesAreHidden ?
+                         // This is the message that would be printed if the wrong method/bci are used:
+                         // "Cannot invoke 'NPEInHiddenTopFrameTest$SomeFunctionalInterface.someMethod(String, String)'" +
+                         // " because 'concatter' is null."
+                         // But the NPE message generation now recognizes this situation and skips the
+                         // message. So we expect null:
+                         null :
+                         // This is the correct message, but it describes code generated on-the-fly.
+                         // You get it if you disable hiding frames (-XX:+ShowHiddenframes).
+                         "Cannot invoke \"String.concat(String)\" because \"<parameter1>\" is null" );
+            e.printStackTrace();
+        }
+    }
+}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/hotspot/jtreg/runtime/exceptionMsgs/NullPointerException/NullPointerExceptionTest.java	Wed Oct 23 14:01:17 2019 -0400
@@ -0,0 +1,1782 @@
+/*
+ * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2019 SAP SE. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/**
+ * @test
+ * @summary Test extended NullPointerException message for
+ *   classfiles generated with debug information. In this case the name
+ *   of the variable containing the array is printed.
+ * @bug 8218628
+ * @modules java.base/java.lang:open
+ *          java.base/jdk.internal.org.objectweb.asm
+ * @library /test/lib
+ * @compile -g NullPointerExceptionTest.java
+ * @run main/othervm -XX:MaxJavaStackTraceDepth=1 -XX:+ShowCodeDetailsInExceptionMessages NullPointerExceptionTest hasDebugInfo
+ */
+/**
+ * @test
+ * @summary Test extended NullPointerException message for class
+ *   files generated without debugging information. The message lists
+ *   detailed information about the entity that is null.
+ * @bug 8218628
+ * @modules java.base/java.lang:open
+ *          java.base/jdk.internal.org.objectweb.asm
+ * @library /test/lib
+ * @compile NullPointerExceptionTest.java
+ * @run main/othervm -XX:MaxJavaStackTraceDepth=1 -XX:+ShowCodeDetailsInExceptionMessages NullPointerExceptionTest
+ */
+
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.ObjectInputStream;
+import java.io.ObjectOutputStream;
+import java.lang.invoke.MethodHandles.Lookup;
+import java.util.ArrayList;
+
+import jdk.internal.org.objectweb.asm.ClassWriter;
+import jdk.internal.org.objectweb.asm.Label;
+import jdk.internal.org.objectweb.asm.MethodVisitor;
+import jdk.test.lib.Asserts;
+
+import static java.lang.invoke.MethodHandles.lookup;
+import static jdk.internal.org.objectweb.asm.Opcodes.ACC_PUBLIC;
+import static jdk.internal.org.objectweb.asm.Opcodes.ACC_SUPER;
+import static jdk.internal.org.objectweb.asm.Opcodes.ACONST_NULL;
+import static jdk.internal.org.objectweb.asm.Opcodes.ALOAD;
+import static jdk.internal.org.objectweb.asm.Opcodes.ASTORE;
+import static jdk.internal.org.objectweb.asm.Opcodes.GETFIELD;
+import static jdk.internal.org.objectweb.asm.Opcodes.GETSTATIC;
+import static jdk.internal.org.objectweb.asm.Opcodes.ICONST_1;
+import static jdk.internal.org.objectweb.asm.Opcodes.ICONST_2;
+import static jdk.internal.org.objectweb.asm.Opcodes.INVOKESPECIAL;
+import static jdk.internal.org.objectweb.asm.Opcodes.INVOKEVIRTUAL;
+import static jdk.internal.org.objectweb.asm.Opcodes.ARETURN;
+import static jdk.internal.org.objectweb.asm.Opcodes.IRETURN;
+import static jdk.internal.org.objectweb.asm.Opcodes.RETURN;
+
+/**
+ * Tests NullPointerExceptions
+ */
+public class NullPointerExceptionTest {
+
+    // Some fields used in the test.
+    static Object nullStaticField;
+    NullPointerExceptionTest nullInstanceField;
+    static int[][][][] staticArray;
+    static long[][] staticLongArray = new long[1000][];
+    DoubleArrayGen dag;
+    ArrayList<String> names = new ArrayList<>();
+    ArrayList<String> curr;
+    static boolean hasDebugInfo = false;
+
+    static {
+        staticArray       = new int[1][][][];
+        staticArray[0]    = new int[1][][];
+        staticArray[0][0] = new int[1][];
+    }
+
+    public static void checkMessage(Throwable t, String expression,
+                                    String obtainedMsg, String expectedMsg) {
+        System.out.println("\nSource code:\n  " + expression + "\n\nOutput:");
+        t.printStackTrace(System.out);
+        if (obtainedMsg != expectedMsg && // E.g. both are null.
+            !obtainedMsg.equals(expectedMsg)) {
+            System.out.println("expected msg: " + expectedMsg);
+            Asserts.assertEquals(expectedMsg, obtainedMsg);
+        }
+        System.out.println("\n----");
+    }
+
+    public static void main(String[] args) throws Exception {
+        NullPointerExceptionTest t = new NullPointerExceptionTest();
+        if (args.length > 0) {
+            hasDebugInfo = true;
+        }
+
+        System.out.println("Tests for the first part of the message:");
+        System.out.println("========================================\n");
+
+        // Test the message printed for the failed action.
+        t.testFailedAction();
+
+        System.out.println("Tests for the second part of the message:");
+        System.out.println("=========================================\n");
+        // Test the method printed for the null entity.
+        t.testNullEntity();
+
+        System.out.println("Further tests:");
+        System.out.println("==============\n");
+
+        // Test if parameters are used in the code.
+        // This is relevant if there is no debug information.
+        t.testParameters();
+
+        // Test that no message is printed for exceptions
+        // allocated explicitly.
+        t.testCreation();
+
+        // Test that no message is printed for exceptions
+        // thrown in native methods.
+        t.testNative();
+
+        // Test that two calls to getMessage() return the same
+        // message.
+        // It is a design decision that it returns two different
+        // String objects.
+        t.testSameMessage();
+
+        // Test serialization.
+        // It is a design decision that after serialization the
+        // the message is lost.
+        t.testSerialization();
+
+        // Test that messages are printed for code generated
+        // on-the-fly.
+        t.testGeneratedCode();
+
+        // Some more interesting complex messages.
+        t.testComplexMessages();
+    }
+
+    // Helper method to cause test case.
+    private double callWithTypes(String[][] dummy1, int[][][] dummy2, float dummy3, long dummy4, short dummy5,
+                                 boolean dummy6, byte dummy7, double dummy8, char dummy9) {
+        return 0.0;
+    }
+
+    @SuppressWarnings("null")
+    public void testFailedAction() {
+        int[]     ia1 = null;
+        float[]   fa1 = null;
+        Object[]  oa1 = null;
+        boolean[] za1 = null;
+        byte[]    ba1 = null;
+        char[]    ca1 = null;
+        short[]   sa1 = null;
+        long[]    la1 = null;
+        double[]  da1 = null;
+
+        // iaload
+        try {
+            int val = ia1[0];
+            System.out.println(val);
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "int val = ia1[0];", e.getMessage(),
+                         "Cannot load from int array because " +
+                         (hasDebugInfo ? "\"ia1\"" : "\"<local1>\"") + " is null");
+        }
+        // faload
+        try {
+            float val = fa1[0];
+            System.out.println(val);
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "float val = fa1[0];", e.getMessage(),
+                         "Cannot load from float array because " +
+                         (hasDebugInfo ? "\"fa1\"" : "\"<local2>\"") + " is null");
+        }
+        // aaload
+        try {
+            Object val = oa1[0];
+            System.out.println(val);
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "Object val = oa1[0];", e.getMessage(),
+                         "Cannot load from object array because " +
+                         (hasDebugInfo ? "\"oa1\"" : "\"<local3>\"") + " is null");
+        }
+        // baload (boolean)
+        try {
+            boolean val = za1[0];
+            System.out.println(val);
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "boolean val = za1[0];", e.getMessage(),
+                         "Cannot load from byte/boolean array because " +
+                         (hasDebugInfo ? "\"za1\"" : "\"<local4>\"") + " is null");
+        }
+        // baload (byte)
+        try {
+            byte val = ba1[0];
+            System.out.println(val);
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "byte val = ba1[0];", e.getMessage(),
+                         "Cannot load from byte/boolean array because " +
+                         (hasDebugInfo ? "\"ba1\"" : "\"<local5>\"") + " is null");
+        }
+        // caload
+        try {
+            char val = ca1[0];
+            System.out.println(val);
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "char val = ca1[0];", e.getMessage(),
+                         "Cannot load from char array because " +
+                         (hasDebugInfo ? "\"ca1\"" : "\"<local6>\"") + " is null");
+        }
+        // saload
+        try {
+            short val = sa1[0];
+            System.out.println(val);
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "short val = sa1[0];", e.getMessage(),
+                         "Cannot load from short array because " +
+                         (hasDebugInfo ? "\"sa1\"" : "\"<local7>\"") + " is null");
+        }
+        // laload
+        try {
+            long val = la1[0];
+            System.out.println(val);
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "long val = la1[0];", e.getMessage(),
+                         "Cannot load from long array because " +
+                         (hasDebugInfo ? "\"la1\"" : "\"<local8>\"") + " is null");
+        }
+        // daload
+        try {
+            double val = da1[0];
+            System.out.println(val);
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "double val = da1[0];", e.getMessage(),
+                         "Cannot load from double array because " +
+                         (hasDebugInfo ? "\"da1\"" : "\"<local9>\"") + " is null");
+        }
+
+        // iastore
+        try {
+            ia1[0] = 0;
+            System.out.println(ia1[0]);
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "ia1[0] = 0;", e.getMessage(),
+                         "Cannot store to int array because " +
+                         (hasDebugInfo ? "\"ia1\"" : "\"<local1>\"") + " is null");
+        }
+        // fastore
+        try {
+            fa1[0] = 0.7f;
+            System.out.println(fa1[0]);
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "fa1[0] = 0.7f;", e.getMessage(),
+                         "Cannot store to float array because " +
+                         (hasDebugInfo ? "\"fa1\"" : "\"<local2>\"") + " is null");
+        }
+        // aastore
+        try {
+            oa1[0] = new Object();
+            System.out.println(oa1[0]);
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "oa1[0] = new Object();", e.getMessage(),
+                         "Cannot store to object array because " +
+                         (hasDebugInfo ? "\"oa1\"" : "\"<local3>\"") + " is null");
+        }
+        // bastore (boolean)
+        try {
+            za1[0] = false;
+            System.out.println(za1[0]);
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "za1[0] = false;", e.getMessage(),
+                         "Cannot store to byte/boolean array because " +
+                         (hasDebugInfo ? "\"za1\"" : "\"<local4>\"") + " is null");
+        }
+        // bastore (byte)
+        try {
+            ba1[0] = 0;
+            System.out.println(ba1[0]);
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "ba1[0] = 0;", e.getMessage(),
+                         "Cannot store to byte/boolean array because " +
+                         (hasDebugInfo ? "\"ba1\"" : "\"<local5>\"") + " is null");
+        }
+        // castore
+        try {
+            ca1[0] = 0;
+            System.out.println(ca1[0]);
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "ca1[0] = 0;", e.getMessage(),
+                         "Cannot store to char array because " +
+                         (hasDebugInfo ? "\"ca1\"" : "\"<local6>\"") + " is null");
+        }
+        // sastore
+        try {
+            sa1[0] = 0;
+            System.out.println(sa1[0]);
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "sa1[0] = 0;", e.getMessage(),
+                         "Cannot store to short array because " +
+                         (hasDebugInfo ? "\"sa1\"" : "\"<local7>\"") + " is null");
+        }
+        // lastore
+        try {
+            la1[0] = 0;
+            System.out.println(la1[0]);
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "la1[0] = 0;", e.getMessage(),
+                         "Cannot store to long array because " +
+                         (hasDebugInfo ? "\"la1\"" : "\"<local8>\"") + " is null");
+        }
+        // dastore
+        try {
+            da1[0] = 0;
+            System.out.println(da1[0]);
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "da1[0] = 0;", e.getMessage(),
+                         "Cannot store to double array because " +
+                         (hasDebugInfo ? "\"da1\"" : "\"<local9>\"") + " is null");
+        }
+
+        // arraylength
+        try {
+            int val = za1.length;
+            System.out.println(val);
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, " int val = za1.length;", e.getMessage(),
+                         "Cannot read the array length because " +
+                         (hasDebugInfo ? "\"za1\"" : "\"<local4>\"") + " is null");
+        }
+        // athrow
+        try {
+            RuntimeException exc = null;
+            throw exc;
+        } catch (NullPointerException e) {
+            checkMessage(e, "throw exc;", e.getMessage(),
+                         "Cannot throw exception because " +
+                         (hasDebugInfo ? "\"exc\"" : "\"<local10>\"") + " is null");
+        }
+        // monitorenter
+        try {
+            synchronized (nullInstanceField) {
+                // desired
+            }
+        } catch (NullPointerException e) {
+            checkMessage(e, "synchronized (nullInstanceField) { ... }", e.getMessage(),
+                         "Cannot enter synchronized block because " +
+                         "\"this.nullInstanceField\" is null");
+        }
+        // monitorexit
+        // No test available
+
+        // getfield
+        try {
+            Object val = nullInstanceField.nullInstanceField;
+            System.out.println(val);
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "Object val = nullInstanceField.nullInstanceField;", e.getMessage(),
+                         "Cannot read field \"nullInstanceField\" because " +
+                         "\"this.nullInstanceField\" is null");
+        }
+        // putfield
+        try {
+            nullInstanceField.nullInstanceField = new NullPointerExceptionTest();
+            System.out.println(nullInstanceField.nullInstanceField);
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "nullInstanceField.nullInstanceField = new NullPointerExceptionTest();", e.getMessage(),
+                         "Cannot assign field \"nullInstanceField\" because " +
+                         "\"this.nullInstanceField\" is null");
+        }
+        // invokevirtual
+        try {
+            String val = nullInstanceField.toString();
+            System.out.println(val);
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "String val = nullInstanceField.toString();", e.getMessage(),
+                         "Cannot invoke \"Object.toString()\" because " +
+                         "\"this.nullInstanceField\" is null");
+        }
+        // invokeinterface
+        try {
+            NullPointerExceptionTest obj = this;
+            Object val = obj.dag.getArray();
+            Asserts.assertNull(val);
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "Object val = obj.dag.getArray();", e.getMessage(),
+                         "Cannot invoke \"NullPointerExceptionTest$DoubleArrayGen.getArray()\" because " +
+                         (hasDebugInfo ? "\"obj" : "\"<local10>") + ".dag\" is null");
+        }
+        // invokespecial
+        G g = null;
+        try {
+            byte[] classBytes = G.generateSub2GTestClass();
+            Lookup lookup = lookup();
+            Class<?> clazz = lookup.defineClass(classBytes);
+            g = (G) clazz.getDeclaredConstructor().newInstance();
+        } catch (Exception e) {
+            e.printStackTrace();
+            Asserts.fail("Generating class Sub2G failed.");
+        }
+        try {
+            g.m2("Beginning");
+        } catch (NullPointerException e) {
+            checkMessage(e, "return super.m2(x).substring(2); // ... where super is null by bytecode manipulation.", e.getMessage(),
+                         "Cannot invoke \"G.m2(String)\" because \"null\" is null");
+        }
+        // Test parameter and return types
+        try {
+            boolean val = (nullInstanceField.callWithTypes(null, null, 0.0f, 0L, (short)0, false, (byte)0, 0.0, 'x') == 0.0);
+            Asserts.assertTrue(val);
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "boolean val = (nullInstanceField.callWithTypes(null, null, 0.0f, 0L, (short)0, false, (byte)0, 0.0, 'x') == 0.0);", e.getMessage(),
+                         "Cannot invoke \"NullPointerExceptionTest.callWithTypes(String[][], int[][][], float, long, short, boolean, byte, double, char)\" because " +
+                         "\"this.nullInstanceField\" is null");
+        }
+    }
+
+    static void test_iload() {
+        int i0 = 0;
+        int i1 = 1;
+        int i2 = 2;
+        int i3 = 3;
+        @SuppressWarnings("unused")
+        int i4 = 4;
+        int i5 = 5;
+
+        int[][] a = new int[6][];
+
+        // iload_0
+        try {
+            a[i0][0] = 77;
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "a[i0][0] = 77;", e.getMessage(),
+                         "Cannot store to int array because " +
+                         (hasDebugInfo ? "\"a[i0]\"" : "\"<local6>[<local0>]\"") + " is null");
+        }
+        // iload_1
+        try {
+            a[i1][0] = 77;
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "a[i1][0] = 77;", e.getMessage(),
+                         "Cannot store to int array because " +
+                         (hasDebugInfo ? "\"a[i1]\"" : "\"<local6>[<local1>]\"") + " is null");
+        }
+        // iload_2
+        try {
+            a[i2][0] = 77;
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "a[i2][0] = 77;", e.getMessage(),
+                         "Cannot store to int array because " +
+                         (hasDebugInfo ? "\"a[i2]\"" : "\"<local6>[<local2>]\"") + " is null");
+        }
+        // iload_3
+        try {
+            a[i3][0] = 77;
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "a[i3][0] = 77;", e.getMessage(),
+                         "Cannot store to int array because " +
+                         (hasDebugInfo ? "\"a[i3]\"" : "\"<local6>[<local3>]\"") + " is null");
+        }
+        // iload
+        try {
+            a[i5][0] = 77;
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "a[i5][0] = 77;", e.getMessage(),
+                         "Cannot store to int array because " +
+                         (hasDebugInfo ? "\"a[i5]\"" : "\"<local6>[<local5>]\"") + " is null");
+        }
+    }
+
+    // Other datatyes than int are not needed.
+    // If we implement l2d and similar bytecodes, we can print
+    // long expressions as array indexes. Then these here could
+    // be used.
+    static void test_lload() {
+        long long0 = 0L;  // l0 looks like 10. Therefore long0.
+        long long1 = 1L;
+        long long2 = 2L;
+        long long3 = 3L;
+        @SuppressWarnings("unused")
+        long long4 = 4L;
+        long long5 = 5L;
+
+        int[][] a = new int[6][];
+
+        // lload_0
+        try {
+            a[(int)long0][0] = 77;
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "a[(int)long0][0] = 77;", e.getMessage(),
+                         "Cannot store to int array because " +
+                         (hasDebugInfo ? "\"a[...]\"" : "\"<local12>[...]\"") + " is null");
+        }
+        // lload_1
+        try {
+            a[(int)long1][0] = 77;
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "a[(int)long1][0] = 77;", e.getMessage(),
+                         "Cannot store to int array because " +
+                         (hasDebugInfo ? "\"a[...]\"" : "\"<local12>[...]\"") + " is null");
+        }
+        // lload_2
+        try {
+            a[(int)long2][0] = 77;
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "a[(int)long2][0] = 77;", e.getMessage(),
+                         "Cannot store to int array because " +
+                         (hasDebugInfo ? "\"a[...]\"" : "\"<local12>[...]\"") + " is null");
+        }
+        // lload_3
+        try {
+            a[(int)long3][0] = 77;
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "a[(int)long3][0] = 77;", e.getMessage(),
+                         "Cannot store to int array because " +
+                         (hasDebugInfo ? "\"a[...]\"" : "\"<local12>[...]\"") + " is null");
+        }
+        // lload
+        try {
+            a[(int)long5][0] = 77;
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "a[(int)long5][0] = 77;", e.getMessage(),
+                         "Cannot store to int array because " +
+                         (hasDebugInfo ? "\"a[...]\"" : "\"<local12>[...]\"") + " is null");
+        }
+    }
+
+    static void test_fload() {
+        float f0 = 0.0f;
+        float f1 = 1.0f;
+        float f2 = 2.0f;
+        float f3 = 3.0f;
+        @SuppressWarnings("unused")
+        float f4 = 4.0f;
+        float f5 = 5.0f;
+
+        int[][] a = new int[6][];
+
+        // fload_0
+        try {
+            a[(int)f0][0] = 77;
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "a[(int)f0][0] = 77;", e.getMessage(),
+                         "Cannot store to int array because " +
+                         (hasDebugInfo ? "\"a[...]\"" : "\"<local6>[...]\"") + " is null");
+        }
+        // fload_1
+        try {
+            a[(int)f1][0] = 77;
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "a[(int)f1][0] = 77;", e.getMessage(),
+                         "Cannot store to int array because " +
+                         (hasDebugInfo ? "\"a[...]\"" : "\"<local6>[...]\"") + " is null");
+        }
+        // fload_2
+        try {
+            a[(int)f2][0] = 77;
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "a[(int)f2][0] = 77;", e.getMessage(),
+                         "Cannot store to int array because " +
+                         (hasDebugInfo ? "\"a[...]\"" : "\"<local6>[...]\"") + " is null");
+        }
+        // fload_3
+        try {
+            a[(int)f3][0] = 77;
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "a[(int)f3][0] = 77;", e.getMessage(),
+                         "Cannot store to int array because " +
+                         (hasDebugInfo ? "\"a[...]\"" : "\"<local6>[...]\"") + " is null");
+        }
+        // fload
+        try {
+            a[(int)f5][0] = 77;
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "a[(int)f5][0] = 77;", e.getMessage(),
+                         "Cannot store to int array because " +
+                         (hasDebugInfo ? "\"a[...]\"" : "\"<local6>[...]\"") + " is null");
+        }
+    }
+
+    @SuppressWarnings("null")
+    static void test_aload() {
+        F f0 = null;
+        F f1 = null;
+        F f2 = null;
+        F f3 = null;
+        @SuppressWarnings("unused")
+        F f4 = null;
+        F f5 = null;
+
+        // aload_0
+        try {
+            f0.i = 33;
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "f0.i = 33;", e.getMessage(),
+                         "Cannot assign field \"i\" because " +
+                         (hasDebugInfo ? "\"f0\"" : "\"<local0>\"") + " is null");
+        }
+        // aload_1
+        try {
+            f1.i = 33;
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "f1.i = 33;", e.getMessage(),
+                         "Cannot assign field \"i\" because " +
+                         (hasDebugInfo ? "\"f1\"" : "\"<local1>\"") + " is null");
+        }
+        // aload_2
+        try {
+            f2.i = 33;
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "f2.i = 33;", e.getMessage(),
+                         "Cannot assign field \"i\" because " +
+                         (hasDebugInfo ? "\"f2\"" : "\"<local2>\"") + " is null");
+        }
+        // aload_3
+        try {
+            f3.i = 33;
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "f3.i = 33;", e.getMessage(),
+                         "Cannot assign field \"i\" because " +
+                         (hasDebugInfo ? "\"f3\"" : "\"<local3>\"") + " is null");
+        }
+        // aload
+        try {
+            f5.i = 33;
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "f5.i = 33;", e.getMessage(),
+                         "Cannot assign field \"i\" because " +
+                         (hasDebugInfo ? "\"f5\"" : "\"<local5>\"") + " is null");
+        }
+    }
+
+    // Helper class for test cases.
+    class A {
+        public B to_b;
+        public B getB() { return to_b; }
+    }
+
+    // Helper class for test cases.
+    class B {
+        public C to_c;
+        public B to_b;
+        public C getC() { return to_c; }
+        public B getBfromB() { return to_b; }
+    }
+
+    // Helper class for test cases.
+    class C {
+        public D to_d;
+        public D getD() { return to_d; }
+    }
+
+    // Helper class for test cases.
+    class D {
+        public int num;
+        public int[][] ar;
+    }
+
+
+    @SuppressWarnings("null")
+    public void testArrayChasing() {
+        int[][][][][][] a = null;
+        try {
+            a[0][0][0][0][0][0] = 99;
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "a[0][0][0][0][0] = 99; // a is null", e.getMessage(),
+                         "Cannot load from object array because " +
+                         (hasDebugInfo ? "\"a\"" : "\"<local1>\"") + " is null");
+        }
+        a = new int[1][][][][][];
+        try {
+            a[0][0][0][0][0][0] = 99;
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "a[0][0][0][0][0] = 99; // a[0] is null", e.getMessage(),
+                         "Cannot load from object array because " +
+                         (hasDebugInfo ? "\"a[0]\"" : "\"<local1>[0]\"") + " is null");
+        }
+        a[0] = new int[1][][][][];
+        try {
+            a[0][0][0][0][0][0] = 99;
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "a[0][0][0][0][0] = 99; // a[0][0] is null", e.getMessage(),
+                         "Cannot load from object array because " +
+                         (hasDebugInfo ? "\"a[0][0]\"" : "\"<local1>[0][0]\"") + " is null");
+        }
+        a[0][0] = new int[1][][][];
+        try {
+            a[0][0][0][0][0][0] = 99;
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "a[0][0][0][0][0] = 99; // a[0][0][0] is null", e.getMessage(),
+                         "Cannot load from object array because " +
+                         (hasDebugInfo ? "\"a[0][0][0]\"" : "\"<local1>[0][0][0]\"") + " is null");
+        }
+        try {
+            System.out.println(a[0][0][0].length);
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "a[0][0][0].length; // a[0][0][0] is null", e.getMessage(),
+                         "Cannot read the array length because " +
+                         (hasDebugInfo ? "\"a[0][0][0]\"" : "\"<local1>[0][0][0]\"") + " is null");
+        }
+        a[0][0][0] = new int[1][][];
+        try {
+            a[0][0][0][0][0][0] = 99;
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "a[0][0][0][0][0] = 99; // a[0][0][0][0] is null", e.getMessage(),
+                         "Cannot load from object array because " +
+                         (hasDebugInfo ? "\"a[0][0][0][0]\"" : "\"<local1>[0][0][0][0]\"") + " is null");
+        }
+        a[0][0][0][0] = new int[1][];
+        // Reaching max recursion depth. Prints <array>.
+        try {
+            a[0][0][0][0][0][0] = 99;
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "a[0][0][0][0][0] = 99; // a[0][0][0][0][0] is null", e.getMessage(),
+                         "Cannot store to int array because " +
+                         "\"<array>[0][0][0][0][0]\" is null");
+        }
+        a[0][0][0][0][0] = new int[1];
+        try {
+            a[0][0][0][0][0][0] = 99;
+        } catch (NullPointerException e) {
+            Asserts.fail();
+        }
+    }
+
+    @SuppressWarnings("null")
+    public void testPointerChasing() {
+        A a = null;
+        try {
+            a.to_b.to_c.to_d.num = 99;
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "a.to_b.to_c.to_d.num = 99; // a is null", e.getMessage(),
+                         "Cannot read field \"to_b\" because " +
+                         (hasDebugInfo ? "\"a\"" : "\"<local1>\"") + " is null");
+        }
+        a = new A();
+        try {
+            a.to_b.to_c.to_d.num = 99;
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "a.to_b.to_c.to_d.num = 99; // a.to_b is null", e.getMessage(),
+                         "Cannot read field \"to_c\" because " +
+                         (hasDebugInfo ? "\"a.to_b\"" : "\"<local1>.to_b\"") + " is null");
+        }
+        a.to_b = new B();
+        try {
+            a.to_b.to_c.to_d.num = 99;
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "a.to_b.to_c.to_d.num = 99; // a.to_b.to_c is null", e.getMessage(),
+                         "Cannot read field \"to_d\" because " +
+                         (hasDebugInfo ? "\"a.to_b.to_c\"" : "\"<local1>.to_b.to_c\"") + " is null");
+        }
+        a.to_b.to_c = new C();
+        try {
+            a.to_b.to_c.to_d.num = 99;
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "a.to_b.to_c.to_d.num = 99; // a.to_b.to_c.to_d is null", e.getMessage(),
+                         "Cannot assign field \"num\" because " +
+                         (hasDebugInfo ? "\"a.to_b.to_c.to_d\"" : "\"<local1>.to_b.to_c.to_d\"") + " is null");
+        }
+    }
+
+    @SuppressWarnings("null")
+    public void testMethodChasing() {
+        A a = null;
+        try {
+            a.getB().getBfromB().getC().getD().num = 99;
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "a.getB().getBfromB().getC().getD().num = 99; // a is null", e.getMessage(),
+                         "Cannot invoke \"NullPointerExceptionTest$A.getB()\" because " +
+                         (hasDebugInfo ? "\"a" : "\"<local1>") + "\" is null");
+        }
+        a = new A();
+        try {
+            a.getB().getBfromB().getC().getD().num = 99;
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "a.getB().getBfromB().getC().getD().num = 99; // a.getB() is null", e.getMessage(),
+                         "Cannot invoke \"NullPointerExceptionTest$B.getBfromB()\" because " +
+                         "the return value of \"NullPointerExceptionTest$A.getB()\" is null");
+        }
+        a.to_b = new B();
+        try {
+            a.getB().getBfromB().getC().getD().num = 99;
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "a.getB().getBfromB().getC().getD().num = 99; // a.getB().getBfromB() is null", e.getMessage(),
+                         "Cannot invoke \"NullPointerExceptionTest$B.getC()\" because " +
+                         "the return value of \"NullPointerExceptionTest$B.getBfromB()\" is null");
+        }
+        a.to_b.to_b = new B();
+        try {
+            a.getB().getBfromB().getC().getD().num = 99;
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "a.getB().getBfromB().getC().getD().num = 99; // a.getB().getBfromB().getC() is null", e.getMessage(),
+                         "Cannot invoke \"NullPointerExceptionTest$C.getD()\" because " +
+                         "the return value of \"NullPointerExceptionTest$B.getC()\" is null");
+        }
+        a.to_b.to_b.to_c = new C();
+        try {
+            a.getB().getBfromB().getC().getD().num = 99;
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "a.getB().getBfromB().getC().getD().num = 99; // a.getB().getBfromB().getC().getD() is null", e.getMessage(),
+                         "Cannot assign field \"num\" because " +
+                         "the return value of \"NullPointerExceptionTest$C.getD()\" is null");
+        }
+    }
+
+    @SuppressWarnings("null")
+    public void testMixedChasing() {
+        A a = null;
+        try {
+            a.getB().getBfromB().to_c.to_d.ar[0][0] = 99;
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "a.getB().getBfromB().to_c.to_d.ar[0][0] = 99; // a is null", e.getMessage(),
+                         "Cannot invoke \"NullPointerExceptionTest$A.getB()\" because " +
+                         (hasDebugInfo ? "\"a\"" : "\"<local1>\"") + " is null");
+        }
+        a = new A();
+        try {
+            a.getB().getBfromB().to_c.to_d.ar[0][0] = 99;
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "a.getB().getBfromB().to_c.to_d.ar[0][0] = 99; // a.getB() is null", e.getMessage(),
+                         "Cannot invoke \"NullPointerExceptionTest$B.getBfromB()\" because " +
+                         "the return value of \"NullPointerExceptionTest$A.getB()\" is null");
+        }
+        a.to_b = new B();
+        try {
+            a.getB().getBfromB().to_c.to_d.ar[0][0] = 99;
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "a.getB().getBfromB().to_c.to_d.ar[0][0] = 99; // a.getB().getBfromB() is null", e.getMessage(),
+                         "Cannot read field \"to_c\" because " +
+                         "the return value of \"NullPointerExceptionTest$B.getBfromB()\" is null");
+        }
+        a.to_b.to_b = new B();
+        try {
+            a.getB().getBfromB().to_c.to_d.ar[0][0] = 99;
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "a.getB().getBfromB().to_c.to_d.ar[0][0] = 99; // a.getB().getBfromB().to_c is null", e.getMessage(),
+                         "Cannot read field \"to_d\" because " +
+                         "\"NullPointerExceptionTest$B.getBfromB().to_c\" is null");
+        }
+        a.to_b.to_b.to_c = new C();
+        try {
+            a.getB().getBfromB().to_c.to_d.ar[0][0] = 99;
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "a.getB().getBfromB().to_c.to_d.ar[0][0] = 99; // a.getB().getBfromB().to_c.to_d is null", e.getMessage(),
+                         "Cannot read field \"ar\" because " +
+                         "\"NullPointerExceptionTest$B.getBfromB().to_c.to_d\" is null");
+        }
+        a.to_b.to_b.to_c.to_d = new D();
+        try {
+            a.getB().getBfromB().to_c.to_d.ar[0][0] = 99;
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "a.getB().getBfromB().to_c.to_d.ar[0][0] = 99; // a.getB().getBfromB().to_c.to_d.ar is null", e.getMessage(),
+                         "Cannot load from object array because " +
+                         "\"NullPointerExceptionTest$B.getBfromB().to_c.to_d.ar\" is null");
+        }
+        try {
+            a.getB().getBfromB().getC().getD().ar[0][0] = 99;
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "a.getB().getBfromB().getC().getD().ar[0][0] = 99; // a.getB().getBfromB().getC().getD().ar is null", e.getMessage(),
+                         "Cannot load from object array because " +
+                         "\"NullPointerExceptionTest$C.getD().ar\" is null");
+        }
+        a.to_b.to_b.to_c.to_d.ar = new int[1][];
+        try {
+            a.getB().getBfromB().to_c.to_d.ar[0][0] = 99;
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "a.getB().getBfromB().to_c.to_d.ar[0][0] = 99; // a.getB().getBfromB().to_c.to_d.ar[0] is null", e.getMessage(),
+                         "Cannot store to int array because " +
+                         "\"NullPointerExceptionTest$B.getBfromB().to_c.to_d.ar[0]\" is null");
+        }
+        try {
+            a.getB().getBfromB().getC().getD().ar[0][0] = 99;
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "a.getB().getBfromB().getC().getD().ar[0][0] = 99; // a.getB().getBfromB().getC().getD().ar[0] is null", e.getMessage(),
+                         "Cannot store to int array because " +
+                         "\"NullPointerExceptionTest$C.getD().ar[0]\" is null");
+        }
+    }
+
+    // Helper method to cause test case.
+    private Object returnNull(String[][] dummy1, int[][][] dummy2, float dummy3) {
+        return null;
+    }
+
+    // Helper method to cause test case.
+    private NullPointerExceptionTest returnMeAsNull(Throwable dummy1, int dummy2, char dummy3) {
+        return null;
+    }
+
+    // Helper interface for test cases.
+    static interface DoubleArrayGen {
+        public double[] getArray();
+    }
+
+    // Helper class for test cases.
+    static class DoubleArrayGenImpl implements DoubleArrayGen {
+        @Override
+        public double[] getArray() {
+            return null;
+        }
+    }
+
+    // Helper class for test cases.
+    static class NullPointerGenerator {
+        public static Object nullReturner(boolean dummy1) {
+            return null;
+        }
+
+        public Object returnMyNull(double dummy1, long dummy2, short dummy3) {
+            return null;
+        }
+    }
+
+    // Helper method to cause test case.
+    public void ImplTestLoadedFromMethod(DoubleArrayGen gen) {
+        try {
+            (gen.getArray())[0] = 1.0;
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "(gen.getArray())[0] = 1.0;", e.getMessage(),
+                         "Cannot store to double array because " +
+                         "the return value of \"NullPointerExceptionTest$DoubleArrayGen.getArray()\" is null");
+        }
+    }
+
+    public void testNullEntity() {
+        int[][] a = new int[820][];
+
+        test_iload();
+        test_lload();
+        test_fload();
+        // test_dload();
+        test_aload();
+        // aload_0: 'this'
+        try {
+            this.nullInstanceField.nullInstanceField = new NullPointerExceptionTest();
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "this.nullInstanceField.nullInstanceField = new NullPointerExceptionTest();", e.getMessage(),
+                         "Cannot assign field \"nullInstanceField\" because \"this.nullInstanceField\" is null");
+        }
+
+        // aconst_null
+        try {
+            throw null;
+        } catch (NullPointerException e) {
+            checkMessage(e, "throw null;", e.getMessage(),
+                         "Cannot throw exception because \"null\" is null");
+        }
+        // iconst_0
+        try {
+            a[0][0] = 77;
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "a[0][0] = 77;", e.getMessage(),
+                         "Cannot store to int array because " +
+                         (hasDebugInfo ? "\"a[0]\"" : "\"<local1>[0]\"") + " is null");
+        }
+        // iconst_1
+        try {
+            a[1][0] = 77;
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "a[1][0] = 77;", e.getMessage(),
+                         "Cannot store to int array because " +
+                         (hasDebugInfo ? "\"a[1]\"" : "\"<local1>[1]\"") + " is null");
+        }
+        // iconst_2
+        try {
+            a[2][0] = 77;
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "a[2][0] = 77;", e.getMessage(),
+                         "Cannot store to int array because " +
+                         (hasDebugInfo ? "\"a[2]\"" : "\"<local1>[2]\"") + " is null");
+        }
+        // iconst_3
+        try {
+            a[3][0] = 77;
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "a[3][0] = 77;", e.getMessage(),
+                         "Cannot store to int array because " +
+                         (hasDebugInfo ? "\"a[3]\"" : "\"<local1>[3]\"") + " is null");
+        }
+        // iconst_4
+        try {
+            a[4][0] = 77;
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "a[4][0] = 77;", e.getMessage(),
+                         "Cannot store to int array because " +
+                         (hasDebugInfo ? "\"a[4]\"" : "\"<local1>[4]\"") + " is null");
+        }
+        // iconst_5
+        try {
+            a[5][0] = 77;
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "a[5][0] = 77;", e.getMessage(),
+                         "Cannot store to int array because " +
+                         (hasDebugInfo ? "\"a[5]\"" : "\"<local1>[5]\"") + " is null");
+        }
+        // long --> iconst
+        try {
+            a[(int)0L][0] = 77;
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "a[(int)0L][0] = 77;", e.getMessage(),
+                         "Cannot store to int array because " +
+                         (hasDebugInfo ? "\"a[0]\"" : "\"<local1>[0]\"") + " is null");
+        }
+        // bipush
+        try {
+            a[139 /*0x77*/][0] = 77;
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "a[139][0] = 77;", e.getMessage(),
+                         "Cannot store to int array because " +
+                         (hasDebugInfo ? "\"a[139]\"" : "\"<local1>[139]\"") + " is null");
+        }
+        // sipush
+        try {
+            a[819 /*0x333*/][0] = 77;
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "a[819][0] = 77;", e.getMessage(),
+                         "Cannot store to int array because " +
+                         (hasDebugInfo ? "\"a[819]\"" : "\"<local1>[819]\"") + " is null");
+        }
+
+        // aaload, with recursive descend.
+        testArrayChasing();
+
+        // getstatic
+        try {
+            boolean val = (((float[]) nullStaticField)[0] == 1.0f);
+            Asserts.assertTrue(val);
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "boolean val = (((float[]) nullStaticField)[0] == 1.0f);", e.getMessage(),
+                         "Cannot load from float array because \"NullPointerExceptionTest.nullStaticField\" is null");
+        }
+
+        // getfield, with recursive descend.
+        testPointerChasing();
+
+        // invokestatic
+        try {
+            char val = ((char[]) NullPointerGenerator.nullReturner(false))[0];
+            System.out.println(val);
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "char val = ((char[]) NullPointerGenerator.nullReturner(false))[0];", e.getMessage(),
+                         "Cannot load from char array because " +
+                         "the return value of \"NullPointerExceptionTest$NullPointerGenerator.nullReturner(boolean)\" is null");
+        }
+        // invokevirtual
+        try {
+            char val = ((char[]) (new NullPointerGenerator().returnMyNull(1, 1, (short) 1)))[0];
+            System.out.println(val);
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "char val = ((char[]) (new NullPointerGenerator().returnMyNull(1, 1, (short) 1)))[0];", e.getMessage(),
+                         "Cannot load from char array because " +
+                         "the return value of \"NullPointerExceptionTest$NullPointerGenerator.returnMyNull(double, long, short)\" is null");
+        }
+        // Call with array arguments.
+        try {
+            double val = ((double[]) returnNull(null, null, 1f))[0];
+            System.out.println(val);
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "double val = ((double[]) returnNull(null, null, 1f))[0];", e.getMessage(),
+                         "Cannot load from double array because " +
+                         "the return value of \"NullPointerExceptionTest.returnNull(String[][], int[][][], float)\" is null");
+        }
+        // invokespecial
+        try {
+            SubG g = new SubG();
+            g.m2("Beginning");
+        } catch (NullPointerException e) {
+            checkMessage(e, "return super.m2(x).substring(2);", e.getMessage(),
+                         "Cannot invoke \"String.substring(int)\" because " +
+                         "the return value of \"G.m2(String)\" is null");
+        }
+        // invokeinterface
+        ImplTestLoadedFromMethod(new DoubleArrayGenImpl());
+        try {
+            returnMeAsNull(null, 1, 'A').dag = new DoubleArrayGenImpl();
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "returnMeAsNull(null, 1, 'A').dag = new DoubleArrayGenImpl();", e.getMessage(),
+                         "Cannot assign field \"dag\" because " +
+                         "the return value of \"NullPointerExceptionTest.returnMeAsNull(java.lang.Throwable, int, char)\" is null");
+        }
+        testMethodChasing();
+
+        // Mixed recursive descend.
+        testMixedChasing();
+    }
+
+    // Assure 64 parameters are printed as 'parameteri'.
+    public String manyParameters(
+        int  i1, int  i2, int  i3, int  i4, int  i5, int  i6, int  i7, int  i8, int  i9, int i10,
+        int i11, int i12, int i13, int i14, int i15, int i16, int i17, int i18, int i19, int i20,
+        int i21, int i22, int i23, int i24, int i25, int i26, int i27, int i28, int i29, int i30,
+        int i31, int i32, int i33, int i34, int i35, int i36, int i37, int i38, int i39, int i40,
+        int i41, int i42, int i43, int i44, int i45, int i46, int i47, int i48, int i49, int i50,
+        int i51, int i52, int i53, int i54, int i55, int i56, int i57, int i58, int i59, int i60,
+        int i61, int i62, int i63, int i64, int i65, int i66, int i67, int i68, int i69, int i70) {
+        String[][][][] ar5 = new String[1][1][1][1];
+        int[][][] idx3 = new int[1][1][1];
+        int[][]   idx2 = new int[1][1];
+        return ar5[i70]
+                  [idx2[i65][i64]]
+                  [idx3[i63][i62][i47]]
+                  [idx3[idx2[i33][i32]][i31][i17]]
+                  .substring(2);
+    }
+
+    // The double placeholder takes two slots on the stack.
+    public void testParametersTestMethod(A a, double placeholder, B b, Integer i) throws Exception {
+        try {
+            a.to_b.to_c.to_d.num = 99;
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "a.to_b.to_c.to_d.num = 99; // to_c is null, a is a parameter.", e.getMessage(),
+                         "Cannot read field \"to_d\" because \"" +
+                         (hasDebugInfo ? "a" : "<parameter1>") + ".to_b.to_c\" is null");
+        }
+
+        try {
+            b.to_c.to_d.num = 99;
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "b.to_c.to_d.num = 99; // b is null and b is a parameter.", e.getMessage(),
+                         "Cannot read field \"to_c\" because " +
+                         // We expect number '3' for the parameter.
+                         (hasDebugInfo ? "\"b\"" : "\"<parameter3>\"") + " is null");
+        }
+
+
+        try {
+            @SuppressWarnings("unused")
+            int my_i = i;
+        }  catch (NullPointerException e) {
+            checkMessage(e, "int my_i = i; // i is a parameter of type Integer.",  e.getMessage(),
+                         "Cannot invoke \"java.lang.Integer.intValue()\" because " +
+                         (hasDebugInfo ? "\"i\"" : "\"<parameter4>\"") + " is null");
+        }
+
+        // If no debug information is available, only 64 parameters (this and i1 through i63)
+        // will be reported in the message as 'parameteri'. Others will be reported as 'locali'.
+        try {
+            manyParameters(0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+                           0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+                           0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+                           0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+                           0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+                           0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+                           0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
+            } catch (NullPointerException e) {
+                checkMessage(e, "return ar5[i70][idx2[i65][i64]][idx3[i63][i62][i47]][idx3[idx2[i33][i32]][i31][i17]].substring(2);", e.getMessage(),
+                             "Cannot invoke \"String.substring(int)\" because " +
+                             (hasDebugInfo ?
+                               "\"ar5[i70][idx2[i65][i64]][idx3[i63][i62][i47]][idx3[idx2[i33][i32]][i31][i17]]\"" :
+                               "\"<local71>[<local70>][<local73>[<local65>][<local64>]][<local72>[<parameter63>][<parameter62>]" +
+                                  "[<parameter47>]][<local72>[<local73>[<parameter33>][<parameter32>]][<parameter31>][<parameter17>]]\"") +
+                             " is null");
+            }
+    }
+
+
+    public void testParameters() throws Exception {
+        A a = new A();
+        a.to_b = new B();
+        testParametersTestMethod(a, 0.0, null, null);
+    }
+
+
+    public void testCreation() throws Exception {
+        // If allocated with new, the message should not be generated.
+        Asserts.assertNull(new NullPointerException().getMessage());
+        String msg = new String("A pointless message");
+        Asserts.assertTrue(new NullPointerException(msg).getMessage() == msg);
+
+        // If created via reflection, the message should not be generated.
+        Exception ex = NullPointerException.class.getDeclaredConstructor().newInstance();
+        Asserts.assertNull(ex.getMessage());
+    }
+
+    public void testNative() throws Exception {
+        // If NPE is thrown in a native method, the message should
+        // not be generated.
+        try {
+            Class.forName(null);
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            Asserts.assertNull(e.getMessage());
+        }
+
+    }
+
+    // Test we get the same message calling npe.getMessage() twice.
+    @SuppressWarnings("null")
+    public void testSameMessage() throws Exception {
+        Object null_o = null;
+        String expectedMsg =
+            "Cannot invoke \"Object.hashCode()\" because " +
+            (hasDebugInfo ? "\"null_o" : "\"<local1>") + "\" is null";
+
+        try {
+            null_o.hashCode();
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            String msg1 = e.getMessage();
+            checkMessage(e, "null_o.hashCode()", msg1, expectedMsg);
+            String msg2 = e.getMessage();
+            Asserts.assertTrue(msg1.equals(msg2));
+            // It was decided that getMessage should generate the
+            // message anew on every call, so this does not hold.
+            //Asserts.assertTrue(msg1 == msg2);
+            Asserts.assertFalse(msg1 == msg2);
+        }
+    }
+
+    @SuppressWarnings("null")
+    public void testSerialization() throws Exception {
+        // NPE without message.
+        Object o1 = new NullPointerException();
+        ByteArrayOutputStream bos1 = new ByteArrayOutputStream();
+        ObjectOutputStream oos1 = new ObjectOutputStream(bos1);
+        oos1.writeObject(o1);
+        ByteArrayInputStream bis1 = new ByteArrayInputStream(bos1.toByteArray());
+        ObjectInputStream ois1 = new ObjectInputStream(bis1);
+        Exception ex1 = (Exception) ois1.readObject();
+        Asserts.assertNull(ex1.getMessage());
+
+        // NPE with custom message.
+        String msg2 = "A useless message";
+        Object o2 = new NullPointerException(msg2);
+        ByteArrayOutputStream bos2 = new ByteArrayOutputStream();
+        ObjectOutputStream oos2 = new ObjectOutputStream(bos2);
+        oos2.writeObject(o2);
+        ByteArrayInputStream bis2 = new ByteArrayInputStream(bos2.toByteArray());
+        ObjectInputStream ois2 = new ObjectInputStream(bis2);
+        Exception ex2 = (Exception) ois2.readObject();
+        Asserts.assertEquals(ex2.getMessage(), msg2);
+
+        // NPE with generated message.
+        Object null_o3 = null;
+        Object o3 = null;
+        String msg3 = null;
+        try {
+            int hc = null_o3.hashCode();
+            System.out.println(hc);
+            Asserts.fail();
+        } catch (NullPointerException npe3) {
+            o3 = npe3;
+            msg3 = npe3.getMessage();
+            checkMessage(npe3, "int hc = null_o3.hashCode();", msg3,
+                         "Cannot invoke \"Object.hashCode()\" because " +
+                         (hasDebugInfo ? "\"null_o3\"" : "\"<local14>\"") + " is null");
+        }
+        ByteArrayOutputStream bos3 = new ByteArrayOutputStream();
+        ObjectOutputStream oos3 = new ObjectOutputStream(bos3);
+        oos3.writeObject(o3);
+        ByteArrayInputStream bis3 = new ByteArrayInputStream(bos3.toByteArray());
+        ObjectInputStream ois3 = new ObjectInputStream(bis3);
+        Exception ex3 = (Exception) ois3.readObject();
+        // It was decided that getMessage should not store the
+        // message in Throwable.detailMessage or implement writeReplace(),
+        // thus it can not be recovered by serialization.
+        //Asserts.assertEquals(ex3.getMessage(), msg3);
+        Asserts.assertEquals(ex3.getMessage(), null);
+    }
+
+    static int index17 = 17;
+    int getIndex17() { return 17; };
+
+    @SuppressWarnings({ "unused", "null" })
+    public void testComplexMessages() {
+        try {
+            staticLongArray[0][0] = 2L;
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "staticLongArray[0][0] = 2L;", e.getMessage(),
+                         "Cannot store to long array because " +
+                         "\"NullPointerExceptionTest.staticLongArray[0]\" is null");
+        }
+
+        try {
+            NullPointerExceptionTest obj = this;
+            Object val = obj.dag.getArray().clone();
+            Asserts.assertNull(val);
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "Object val = obj.dag.getArray().clone();", e.getMessage(),
+                         "Cannot invoke \"NullPointerExceptionTest$DoubleArrayGen.getArray()\" because " +
+                         (hasDebugInfo ? "\"obj" : "\"<local1>") + ".dag\" is null");
+        }
+        try {
+            int indexes[] = new int[1];
+            NullPointerExceptionTest[] objs = new NullPointerExceptionTest[] {this};
+            Object val = objs[indexes[0]].nullInstanceField.returnNull(null, null, 1f);
+            Asserts.assertNull(val);
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            checkMessage(e, "Object val = objs[indexes[0]].nullInstanceField.returnNull(null, null, 1f);", e.getMessage(),
+                         "Cannot invoke \"NullPointerExceptionTest.returnNull(String[][], int[][][], float)\" because " +
+                         (hasDebugInfo ? "\"objs[indexes" : "\"<local2>[<local1>") + "[0]].nullInstanceField\" is null");
+        }
+
+        try {
+            int indexes[] = new int[1];
+            NullPointerExceptionTest[][] objs =
+                new NullPointerExceptionTest[][] {new NullPointerExceptionTest[] {this}};
+            synchronized (objs[indexes[0]][0].nullInstanceField) {
+                Asserts.fail();
+            }
+        } catch (NullPointerException e) {
+            checkMessage(e, "synchronized (objs[indexes[0]][0].nullInstanceField) { ... }", e.getMessage(),
+                         "Cannot enter synchronized block because " +
+                         (hasDebugInfo ? "\"objs[indexes" : "\"<local2>[<local1>" ) + "[0]][0].nullInstanceField\" is null");
+        }
+
+        try {
+            // If we can get the value from more than one bci, we cannot know which one
+            // is null. Make sure we don't print the wrong value.
+            String s = null;
+            @SuppressWarnings("unused")
+            byte[] val = (Math.random() < 0.5 ? s : (new String[1])[0]).getBytes();
+        } catch (NullPointerException e) {
+            checkMessage(e, "byte[] val = (Math.random() < 0.5 ? s : (new String[1])[0]).getBytes();", e.getMessage(),
+                         "Cannot invoke \"String.getBytes()\"");
+        }
+
+        try {
+            // If we can get the value from more than one bci, we cannot know which one
+            // is null. Make sure we don't print the wrong value.  Also make sure if
+            // we don't print the failed action we don't print a string at all.
+            int[][] a = new int[1][];
+            int[][] b = new int[2][];
+            long index = 0;
+            @SuppressWarnings("unused")
+            int val = (Math.random() < 0.5 ? a[(int)index] : b[(int)index])[13];
+        } catch (NullPointerException e) {
+            checkMessage(e, "int val = (Math.random() < 0.5 ? a[(int)index] : b[(int)index])[13]", e.getMessage(),
+                         "Cannot load from int array");
+        }
+
+        try {
+            // If we can get the value from more than one bci, we cannot know which one
+            // is null. Make sure we don't print the wrong value.  Also make sure if
+            // we don't print the failed action we don't print a string at all.
+            int[][] a = new int[1][];
+            int[][] b = new int[2][];
+            long index = 0;
+            int val = (Math.random() < 0.5 ? a : b)[(int)index][13];
+        } catch (NullPointerException e) {
+            checkMessage(e, "int val = (Math.random() < 0.5 ? a : b)[(int)index][13]", e.getMessage(),
+                         "Cannot load from int array because \"<array>[...]\" is null");
+        }
+
+        try {
+            C c1 = new C();
+            C c2 = new C();
+            (Math.random() < 0.5 ? c1 : c2).to_d.num = 77;
+        } catch (NullPointerException e) {
+            checkMessage(e, "(Math.random() < 0.5 ? c1 : c2).to_d.num = 77;", e.getMessage(),
+                         "Cannot assign field \"num\" because \"to_d\" is null");
+        }
+
+        // Static variable as array index.
+        try {
+            staticLongArray[index17][0] = 2L;
+        }  catch (NullPointerException e) {
+            checkMessage(e, "staticLongArray[index17][0] = 2L;",  e.getMessage(),
+                         "Cannot store to long array because " +
+                         "\"NullPointerExceptionTest.staticLongArray[NullPointerExceptionTest.index17]\" is null");
+        }
+
+        // Method call as array index.
+        try {
+            staticLongArray[getIndex17()][0] = 2L;
+        }  catch (NullPointerException e) {
+            checkMessage(e, "staticLongArray[getIndex17()][0] = 2L;",  e.getMessage(),
+                         "Cannot store to long array because " +
+                         "\"NullPointerExceptionTest.staticLongArray[NullPointerExceptionTest.getIndex17()]\" is null");
+        }
+
+        // Unboxing.
+        Integer a = null;
+        try {
+            int b = a;
+        }  catch (NullPointerException e) {
+            checkMessage(e, "Integer a = null; int b = a;",  e.getMessage(),
+                         "Cannot invoke \"java.lang.Integer.intValue()\" because " +
+                         (hasDebugInfo ? "\"a\"" : "\"<local1>\"") + " is null");
+        }
+
+        // Unboxing by hand. Has the same message as above.
+        try {
+            int b = a.intValue();
+        }  catch (NullPointerException e) {
+            checkMessage(e, "Integer a = null; int b = a.intValue();",  e.getMessage(),
+                         "Cannot invoke \"java.lang.Integer.intValue()\" because " +
+                         (hasDebugInfo ? "\"a\"" : "\"<local1>\"") + " is null");
+        }
+    }
+
+    // Generates:
+    // class E implements E0 {
+    //     public int throwNPE(F f) {
+    //         return f.i;
+    //     }
+    //     public void throwNPE_reuseStackSlot1(String s1) {
+    //         System.out.println(s1.substring(1));
+    //         String s1_2 = null; // Reuses slot 1.
+    //         System.out.println(s1_2.substring(1));
+    //     }
+    //     public void throwNPE_reuseStackSlot4(String s1, String s2, String s3, String s4) {
+    //         System.out.println(s4.substring(1));
+    //         String s4_2 = null;  // Reuses slot 4.
+    //         System.out.println(s4_2.substring(1));
+    //     }
+    // }
+    //
+    // This code was adapted from output of
+    //   java jdk.internal.org.objectweb.asm.util.ASMifier E0.class
+    static byte[] generateTestClass() {
+        ClassWriter cw = new ClassWriter(0);
+        MethodVisitor mv;
+
+        cw.visit(50, ACC_SUPER, "E", null, "java/lang/Object", new String[] { "E0" });
+
+        {
+            mv = cw.visitMethod(0, "<init>", "()V", null, null);
+            mv.visitCode();
+            mv.visitVarInsn(ALOAD, 0);
+            mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V", false);
+            mv.visitInsn(RETURN);
+            mv.visitMaxs(1, 1);
+            mv.visitEnd();
+        }
+
+        {
+            mv = cw.visitMethod(ACC_PUBLIC, "throwNPE", "(LF;)I", null, null);
+            mv.visitCode();
+            Label label0 = new Label();
+            mv.visitLabel(label0);
+            mv.visitLineNumber(118, label0);
+            mv.visitVarInsn(ALOAD, 1);
+            mv.visitFieldInsn(GETFIELD, "F", "i", "I");
+            mv.visitInsn(IRETURN);
+            Label label1 = new Label();
+            mv.visitLabel(label1);
+            mv.visitLocalVariable("this", "LE;", null, label0, label1, 0);
+            mv.visitLocalVariable("f", "LE;", null, label0, label1, 1);
+            mv.visitMaxs(1, 2);
+            mv.visitEnd();
+        }
+
+        {
+            mv = cw.visitMethod(ACC_PUBLIC, "throwNPE_reuseStackSlot1", "(Ljava/lang/String;)V", null, null);
+            mv.visitCode();
+            Label label0 = new Label();
+            mv.visitLabel(label0);
+            mv.visitLineNumber(7, label0);
+            mv.visitFieldInsn(GETSTATIC, "java/lang/System", "out", "Ljava/io/PrintStream;");
+            mv.visitVarInsn(ALOAD, 1);
+            mv.visitInsn(ICONST_1);
+            mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/String", "substring", "(I)Ljava/lang/String;", false);
+            mv.visitMethodInsn(INVOKEVIRTUAL, "java/io/PrintStream", "println", "(Ljava/lang/String;)V", false);
+            Label label1 = new Label();
+            mv.visitLabel(label1);
+            mv.visitLineNumber(8, label1);
+            mv.visitInsn(ACONST_NULL);
+            mv.visitVarInsn(ASTORE, 1);
+            Label label2 = new Label();
+            mv.visitLabel(label2);
+            mv.visitLineNumber(9, label2);
+            mv.visitFieldInsn(GETSTATIC, "java/lang/System", "out", "Ljava/io/PrintStream;");
+            mv.visitVarInsn(ALOAD, 1);
+            mv.visitInsn(ICONST_1);
+            mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/String", "substring", "(I)Ljava/lang/String;", false);
+            mv.visitMethodInsn(INVOKEVIRTUAL, "java/io/PrintStream", "println", "(Ljava/lang/String;)V", false);
+            Label label3 = new Label();
+            mv.visitLabel(label3);
+            mv.visitLineNumber(10, label3);
+            mv.visitInsn(RETURN);
+            mv.visitMaxs(3, 3);
+            mv.visitEnd();
+        }
+
+        {
+            mv = cw.visitMethod(ACC_PUBLIC, "throwNPE_reuseStackSlot4", "(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;)V", null, null);
+            mv.visitCode();
+            Label label0 = new Label();
+            mv.visitLabel(label0);
+            mv.visitLineNumber(12, label0);
+            mv.visitFieldInsn(GETSTATIC, "java/lang/System", "out", "Ljava/io/PrintStream;");
+            mv.visitVarInsn(ALOAD, 4);
+            mv.visitInsn(ICONST_1);
+            mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/String", "substring", "(I)Ljava/lang/String;", false);
+            mv.visitMethodInsn(INVOKEVIRTUAL, "java/io/PrintStream", "println", "(Ljava/lang/String;)V", false);
+            Label label1 = new Label();
+            mv.visitLabel(label1);
+            mv.visitLineNumber(13, label1);
+            mv.visitInsn(ACONST_NULL);
+            mv.visitVarInsn(ASTORE, 4);
+            Label label2 = new Label();
+            mv.visitLabel(label2);
+            mv.visitLineNumber(14, label2);
+            mv.visitFieldInsn(GETSTATIC, "java/lang/System", "out", "Ljava/io/PrintStream;");
+            mv.visitVarInsn(ALOAD, 4);
+            mv.visitInsn(ICONST_1);
+            mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/String", "substring", "(I)Ljava/lang/String;", false);
+            mv.visitMethodInsn(INVOKEVIRTUAL, "java/io/PrintStream", "println", "(Ljava/lang/String;)V", false);
+            Label label3 = new Label();
+            mv.visitLabel(label3);
+            mv.visitLineNumber(15, label3);
+            mv.visitInsn(RETURN);
+            mv.visitMaxs(3, 6);
+            mv.visitEnd();
+        }
+
+        cw.visitEnd();
+
+        return cw.toByteArray();
+    }
+
+    // Assign to a parameter.
+    // Without debug information, this will print "parameter1" if a NPE
+    // is raised in the first line because null was passed to the method.
+    // It will print "local1" if a NPE is raised in line three.
+    public void assign_to_parameter(String s1) {
+        System.out.println(s1.substring(1));
+        s1 = null;
+        System.out.println(s1.substring(2));
+    }
+
+    // Tests that a class generated on the fly is handled properly.
+    public void testGeneratedCode() throws Exception {
+        byte[] classBytes = generateTestClass();
+        Lookup lookup = lookup();
+        Class<?> clazz = lookup.defineClass(classBytes);
+        E0 e = (E0) clazz.getDeclaredConstructor().newInstance();
+        try {
+            e.throwNPE(null);
+        } catch (NullPointerException ex) {
+            checkMessage(ex, "return f.i;",
+                         ex.getMessage(),
+                         "Cannot read field \"i\" because \"f\" is null");
+        }
+
+        // Optimized bytecode can reuse local variable slots for several
+        // local variables.
+        // If there is no variable name information, we print 'parameteri'
+        // if a parameter maps to a local slot. Once a local slot has been
+        // written, we don't know any more whether it was written as the
+        // corresponding parameter, or whether another local has been
+        // mapped to the slot. So we don't want to print 'parameteri' any
+        // more, but 'locali'. Similary for 'this'.
+
+        // Expect message saying "parameter0".
+        try {
+            e.throwNPE_reuseStackSlot1(null);
+        } catch (NullPointerException ex) {
+            checkMessage(ex, "s1.substring(1)",
+                         ex.getMessage(),
+                         "Cannot invoke \"String.substring(int)\" because \"<parameter1>\" is null");
+        }
+        // Expect message saying "local0".
+        try {
+            e.throwNPE_reuseStackSlot1("aa");
+        } catch (NullPointerException ex) {
+            checkMessage(ex, "s1_2.substring(1)",
+                         ex.getMessage(),
+                         "Cannot invoke \"String.substring(int)\" because \"<local1>\" is null");
+        }
+        // Expect message saying "parameter4".
+        try {
+            e.throwNPE_reuseStackSlot4("aa", "bb", "cc", null);
+        } catch (NullPointerException ex) {
+            checkMessage(ex, "s4.substring(1)",
+                         ex.getMessage(),
+                         "Cannot invoke \"String.substring(int)\" because \"<parameter4>\" is null");
+        }
+        // Expect message saying "local4".
+        try {
+            e.throwNPE_reuseStackSlot4("aa", "bb", "cc", "dd");
+        } catch (NullPointerException ex) {
+            checkMessage(ex, "s4_2.substring(1)",
+                         ex.getMessage(),
+                         "Cannot invoke \"String.substring(int)\" because \"<local4>\" is null");
+        }
+
+        // Unfortunately, with the fix for optimized code as described above
+        // we don't write 'parameteri' any more after the parameter variable
+        // has been assigned.
+
+        if (!hasDebugInfo) {
+            // Expect message saying "parameter1".
+            try {
+                assign_to_parameter(null);
+            } catch (NullPointerException ex) {
+                checkMessage(ex, "s1.substring(1)",
+                             ex.getMessage(),
+                             "Cannot invoke \"String.substring(int)\" because \"<parameter1>\" is null");
+            }
+            // The message says "local1" although "parameter1" would be correct.
+            try {
+                assign_to_parameter("aaa");
+            } catch (NullPointerException ex) {
+                checkMessage(ex, "s1.substring(2)",
+                             ex.getMessage(),
+                             "Cannot invoke \"String.substring(int)\" because \"<local1>\" is null");
+            }
+        }
+    }
+}
+
+// Helper interface for test cases needed for generateTestClass().
+interface E0 {
+    public int  throwNPE(F f);
+    public void throwNPE_reuseStackSlot1(String s1);
+    public void throwNPE_reuseStackSlot4(String s1, String s2, String s3, String s4);
+}
+
+// Helper class for test cases needed for generateTestClass().
+class F {
+    int i;
+}
+
+// For invokespecial test cases.
+class G {
+    public String m2(String x) {
+        return null;
+    }
+
+    // This generates the following class:
+    //
+    // class Sub2G extends G {
+    //   public String m2(String x) {
+    //       super = null;  // Possible in raw bytecode.
+    //       return super.m2(x).substring(2);  // Uses invokespecial.
+    //   }
+    // }
+    //
+    // This code was adapted from output of
+    //   java jdk.internal.org.objectweb.asm.util.ASMifier Sub2G.class
+    static byte[] generateSub2GTestClass() {
+        ClassWriter cw = new ClassWriter(0);
+        MethodVisitor mv;
+
+        cw.visit(50, ACC_SUPER, "Sub2G", null, "G", null);
+
+        {
+            mv = cw.visitMethod(0, "<init>", "()V", null, null);
+            mv.visitCode();
+            mv.visitVarInsn(ALOAD, 0);
+            mv.visitMethodInsn(INVOKESPECIAL, "G", "<init>", "()V", false);
+            mv.visitInsn(RETURN);
+            mv.visitMaxs(1, 1);
+            mv.visitEnd();
+        }
+        {
+            mv = cw.visitMethod(ACC_PUBLIC, "m2", "(Ljava/lang/String;)Ljava/lang/String;", null, null);
+            mv.visitCode();
+            mv.visitInsn(ACONST_NULL);   // Will cause NPE.
+            mv.visitVarInsn(ALOAD, 1);
+            mv.visitMethodInsn(INVOKESPECIAL, "G", "m2", "(Ljava/lang/String;)Ljava/lang/String;", false);
+            mv.visitInsn(ICONST_2);
+            mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/String", "substring", "(I)Ljava/lang/String;", false);
+            mv.visitInsn(ARETURN);
+            mv.visitMaxs(2, 2);
+            mv.visitEnd();
+        }
+
+        cw.visitEnd();
+
+        return cw.toByteArray();
+    }
+}
+class SubG extends G {
+    public String m2(String x) {
+        return super.m2(x).substring(2);
+    }
+}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/hotspot/jtreg/runtime/exceptionMsgs/NullPointerException/SuppressMessagesTest.java	Wed Oct 23 14:01:17 2019 -0400
@@ -0,0 +1,82 @@
+/*
+ * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2019 SAP SE. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/**
+ * @test
+ * @summary Test that the default of flag ShowCodeDetailsInExceptionMessages is 'false',
+ *          i.e., make sure the VM does not print the message on default.
+ * @bug 8218628
+ * @library /test/lib
+ * @compile -g SuppressMessagesTest.java
+ * @run main/othervm SuppressMessagesTest noMessage
+ */
+/**
+ * @test
+ * @summary Test that the messages are suppressed if flag ShowCodeDetailsInExceptionMessages is 'false'.
+ * @bug 8218628
+ * @library /test/lib
+ * @compile -g SuppressMessagesTest.java
+ * @run main/othervm -XX:-ShowCodeDetailsInExceptionMessages SuppressMessagesTest noMessage
+ */
+/**
+ * @test
+ * @summary Test that the messages are printed if flag ShowCodeDetailsInExceptionMessages is 'true'.
+ * @bug 8218628
+ * @library /test/lib
+ * @compile -g SuppressMessagesTest.java
+ * @run main/othervm -XX:+ShowCodeDetailsInExceptionMessages SuppressMessagesTest printMessage
+ */
+
+import jdk.test.lib.Asserts;
+
+class A {
+    int aFld;
+}
+
+// Tests that the messages are suppressed by flag ShowCodeDetailsInExceptionMessages.
+public class SuppressMessagesTest {
+
+    public static void main(String[] args) throws Exception {
+        A a = null;
+
+        if (args.length != 1) {
+            Asserts.fail("You must specify one arg for this test");
+        }
+
+        try {
+            @SuppressWarnings("null")
+            int val = a.aFld;
+            System.out.println(val);
+            Asserts.fail();
+        } catch (NullPointerException e) {
+            System.out.println("Stacktrace of the expected exception:");
+            e.printStackTrace(System.out);
+            if (args[0].equals("noMessage")) {
+                Asserts.assertNull(e.getMessage());
+            } else {
+                Asserts.assertEquals(e.getMessage(), "Cannot read field \"aFld\" because \"a\" is null");
+            }
+        }
+    }
+}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/hotspot/jtreg/runtime/signal/TestSiginfo.java	Wed Oct 23 14:01:17 2019 -0400
@@ -0,0 +1,35 @@
+/*
+ * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+
+/*
+ * @test
+ * @requires os.family != "windows" & os.family != "aix"
+ *
+ * @summary tests the SIGINFO signal (available on BSD platforms)
+ * VM testbase keywords: [signal, runtime, linux, solaris, macosx]
+ *
+ * @library /test/lib
+ * @run main/native SigTestDriver SIGINFO
+ */
+
--- a/test/hotspot/jtreg/serviceability/dcmd/gc/RunGCTest.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/test/hotspot/jtreg/serviceability/dcmd/gc/RunGCTest.java	Wed Oct 23 14:01:17 2019 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2015, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -36,13 +36,12 @@
 /*
  * @test
  * @summary Test of diagnostic command GC.run
- * @requires vm.gc != "Z"
  * @library /test/lib
  * @modules java.base/jdk.internal.misc
  *          java.compiler
  *          java.management
  *          jdk.internal.jvmstat/sun.jvmstat.monitor
- * @run testng/othervm -Xlog:gc=debug:RunGC.gclog -XX:-ExplicitGCInvokesConcurrent RunGCTest
+ * @run testng/othervm -Xlog:gc:RunGC.gclog -XX:-ExplicitGCInvokesConcurrent RunGCTest
  */
 public class RunGCTest {
     public void run(CommandExecutor executor) {
@@ -58,7 +57,7 @@
         }
 
         OutputAnalyzer output = new OutputAnalyzer(gcLog, "");
-        output.shouldContain("Pause Full (Diagnostic Command)");
+        output.shouldContain("(Diagnostic Command)");
     }
 
     @Test
--- a/test/hotspot/jtreg/serviceability/logging/TestQuotedLogOutputs.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/test/hotspot/jtreg/serviceability/logging/TestQuotedLogOutputs.java	Wed Oct 23 14:01:17 2019 -0400
@@ -26,6 +26,7 @@
  * @summary Ensure proper parsing of quoted output names for -Xlog arguments.
  * @modules java.base/jdk.internal.misc
  * @library /test/lib
+ * @run main/othervm TestQuotedLogOutputs
  */
 
 import java.io.File;
--- a/test/jdk/TEST.ROOT	Wed Oct 23 13:53:41 2019 -0400
+++ b/test/jdk/TEST.ROOT	Wed Oct 23 14:01:17 2019 -0400
@@ -22,7 +22,8 @@
 javax/management sun/awt sun/java2d javax/xml/jaxp/testng/validation java/lang/ProcessHandle
 
 # Tests that cannot run concurrently
-exclusiveAccess.dirs=java/rmi/Naming java/util/prefs sun/management/jmxremote \
+exclusiveAccess.dirs=java/math/BigInteger/largeMemory \
+java/rmi/Naming java/util/prefs sun/management/jmxremote \
 sun/tools/jstatd sun/tools/jcmd sun/tools/jhsdb sun/tools/jhsdb/heapconfig \
 sun/tools/jinfo sun/tools/jmap sun/tools/jps sun/tools/jstack sun/tools/jstat \
 com/sun/tools/attach sun/security/mscapi java/util/stream java/util/Arrays/largeMemory \
--- a/test/jdk/com/sun/jdi/MonitorEventTest.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/test/jdk/com/sun/jdi/MonitorEventTest.java	Wed Oct 23 14:01:17 2019 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2005, 2015, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2005, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -31,15 +31,22 @@
  * @run compile -g MonitorEventTest.java
  * @run driver MonitorEventTest
  */
-import com.sun.jdi.*;
-import com.sun.jdi.event.*;
-import com.sun.jdi.request.*;
-
-import java.util.*;
+import com.sun.jdi.ReferenceType;
+import com.sun.jdi.ThreadReference;
+import com.sun.jdi.event.BreakpointEvent;
+import com.sun.jdi.event.MonitorContendedEnterEvent;
+import com.sun.jdi.event.MonitorContendedEnteredEvent;
+import com.sun.jdi.event.MonitorWaitEvent;
+import com.sun.jdi.event.MonitorWaitedEvent;
+import com.sun.jdi.request.EventRequest;
+import com.sun.jdi.request.MonitorContendedEnterRequest;
+import com.sun.jdi.request.MonitorContendedEnteredRequest;
+import com.sun.jdi.request.MonitorWaitRequest;
+import com.sun.jdi.request.MonitorWaitedRequest;
 
 /********** target program **********/
 
-class MonitorTestTarg {
+class MonitorEventTestTarg {
     public static Object endingMonitor;
     public static Object startingMonitor;
     public static final long timeout = 30 * 6000; // milliseconds
@@ -91,13 +98,13 @@
 
 class myThread extends Thread {
     public void run() {
-        synchronized(MonitorTestTarg.startingMonitor) {
-            MonitorTestTarg.startingMonitor.notify();
+        synchronized(MonitorEventTestTarg.startingMonitor) {
+            MonitorEventTestTarg.startingMonitor.notify();
         }
 
         // contended enter wait until main thread release monitor
-        MonitorTestTarg.aboutEnterLock = true;
-        synchronized (MonitorTestTarg.endingMonitor) {
+        MonitorEventTestTarg.aboutEnterLock = true;
+        synchronized (MonitorEventTestTarg.endingMonitor) {
         }
     }
 }
@@ -108,7 +115,6 @@
 public class MonitorEventTest extends TestScaffold {
     ReferenceType targetClass;
     ThreadReference mainThread;
-    List monitors;
     MonitorContendedEnterRequest contendedEnterRequest;
     MonitorWaitedRequest monitorWaitedRequest;
     MonitorContendedEnteredRequest contendedEnteredRequest;
@@ -160,11 +166,10 @@
          * Get to the top of main()
          * to determine targetClass and mainThread
          */
-        BreakpointEvent bpe = startToMain("MonitorTestTarg");
+        BreakpointEvent bpe = startToMain("MonitorEventTestTarg");
         targetClass = bpe.location().declaringType();
         mainThread = bpe.thread();
 
-        int initialSize = mainThread.frames().size();
         if (vm().canRequestMonitorEvents()) {
             contendedEnterRequest = eventRequestManager().createMonitorContendedEnterRequest();
             contendedEnterRequest.setSuspendPolicy(EventRequest.SUSPEND_NONE);
@@ -183,7 +188,7 @@
         }
 
 
-        resumeTo("MonitorTestTarg", "foo", "()V");
+        resumeTo("MonitorEventTestTarg", "foo", "()V");
 
         /*
          * resume until end
--- a/test/jdk/com/sun/jdi/MonitorFrameInfo.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/test/jdk/com/sun/jdi/MonitorFrameInfo.java	Wed Oct 23 14:01:17 2019 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2005, 2015, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2005, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -33,15 +33,17 @@
  * @run compile -g MonitorFrameInfo.java
  * @run driver MonitorFrameInfo
  */
-import com.sun.jdi.*;
-import com.sun.jdi.event.*;
-import com.sun.jdi.request.*;
+import java.util.List;
 
-import java.util.*;
+import com.sun.jdi.InvalidStackFrameException;
+import com.sun.jdi.MonitorInfo;
+import com.sun.jdi.ReferenceType;
+import com.sun.jdi.ThreadReference;
+import com.sun.jdi.event.BreakpointEvent;
 
     /********** target program **********/
 
-class MonitorTestTarg {
+class MonitorFrameInfoTarg {
     static void foo3() {
         System.out.println("executing foo3");
 
@@ -71,7 +73,7 @@
 public class MonitorFrameInfo extends TestScaffold {
     ReferenceType targetClass;
     ThreadReference mainThread;
-    List monitors;
+    List<MonitorInfo> monitors;
 
     static int expectedCount = 2;
     static int[] expectedDepth = { 1, 3 };
@@ -93,13 +95,13 @@
          * Get to the top of main()
          * to determine targetClass and mainThread
          */
-        BreakpointEvent bpe = startToMain("MonitorTestTarg");
+        BreakpointEvent bpe = startToMain("MonitorFrameInfoTarg");
         targetClass = bpe.location().declaringType();
         mainThread = bpe.thread();
 
         int initialSize = mainThread.frames().size();
 
-        resumeTo("MonitorTestTarg", "foo3", "()V");
+        resumeTo("MonitorFrameInfoTarg", "foo3", "()V");
 
         if (!mainThread.frame(0).location().method().name()
                         .equals("foo3")) {
--- a/test/jdk/com/sun/jdi/RedefineImplementor.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/test/jdk/com/sun/jdi/RedefineImplementor.java	Wed Oct 23 14:01:17 2019 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2006, 2018, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2006, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -44,14 +44,14 @@
     }
 
     public static void main(String[] args) {
-        Runnable r = new B();
-        B.func(r);
-        B.func(r);  // @1 breakpoint
+        Runnable r = new RedefineImplementorB();
+        RedefineImplementorB.func(r);
+        RedefineImplementorB.func(r);  // @1 breakpoint
     }
 
 }
 
-class B extends RedefineImplementorTarg {
+class RedefineImplementorB extends RedefineImplementorTarg {
     static void func(Runnable r) {
         r.run();
     }
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/jdk/java/awt/FontMetrics/SpaceAdvance.java	Wed Oct 23 14:01:17 2019 -0400
@@ -0,0 +1,49 @@
+/*
+ * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * @test
+ * @bug 8227662
+ */
+
+import java.awt.Font;
+import java.awt.FontMetrics ;
+import java.awt.Graphics2D;
+import java.awt.image.BufferedImage;
+
+public class SpaceAdvance {
+    public static void main(String[] args) throws Exception {
+
+        BufferedImage bi = new BufferedImage(1,1,1);
+        Graphics2D g2d = bi.createGraphics();
+        Font font = new Font(Font.DIALOG, Font.PLAIN, 12);
+        if (!font.canDisplay(' ')) {
+            return;
+        }
+        g2d.setFont(font);
+        FontMetrics fm = g2d.getFontMetrics();
+        if (fm.charWidth(' ') == 0) {
+            throw new RuntimeException("Space has char width of 0");
+        }
+    }
+}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/jdk/java/awt/image/DrawImage/IncorrectManagedImageSourceOffset.java	Wed Oct 23 14:01:17 2019 -0400
@@ -0,0 +1,188 @@
+/*
+ * Copyright (c) 2014, 2019, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+import java.awt.AlphaComposite;
+import java.awt.Color;
+import java.awt.Graphics2D;
+import java.awt.GraphicsConfiguration;
+import java.awt.GraphicsEnvironment;
+import java.awt.Image;
+import java.awt.Transparency;
+import java.awt.color.ColorSpace;
+import java.awt.image.BufferedImage;
+import java.awt.image.ColorModel;
+import java.awt.image.ComponentColorModel;
+import java.awt.image.DataBuffer;
+import java.awt.image.Raster;
+import java.awt.image.VolatileImage;
+import java.awt.image.WritableRaster;
+import java.io.File;
+import java.io.IOException;
+
+import javax.imageio.ImageIO;
+
+import sun.awt.image.SunWritableRaster;
+
+import static java.awt.Transparency.BITMASK;
+import static java.awt.Transparency.OPAQUE;
+import static java.awt.Transparency.TRANSLUCENT;
+import static java.awt.image.BufferedImage.TYPE_3BYTE_BGR;
+import static java.awt.image.BufferedImage.TYPE_4BYTE_ABGR;
+import static java.awt.image.BufferedImage.TYPE_4BYTE_ABGR_PRE;
+import static java.awt.image.BufferedImage.TYPE_BYTE_BINARY;
+import static java.awt.image.BufferedImage.TYPE_BYTE_INDEXED;
+import static java.awt.image.BufferedImage.TYPE_CUSTOM;
+import static java.awt.image.BufferedImage.TYPE_INT_ARGB;
+import static java.awt.image.BufferedImage.TYPE_INT_ARGB_PRE;
+import static java.awt.image.BufferedImage.TYPE_INT_BGR;
+import static java.awt.image.BufferedImage.TYPE_INT_RGB;
+
+/**
+ * @test
+ * @key headful
+ * @bug 8029253 6207877
+ * @summary Tests asymmetric source offsets when managed image is drawn to VI.
+ *          Results of the blit to compatibleImage are used for comparison.
+ * @author Sergey Bylokhov
+ * @modules java.desktop/sun.awt.image
+ * @run main/othervm -Dsun.java2d.accthreshold=0 IncorrectManagedImageSourceOffset
+ * @run main/othervm -Dsun.java2d.accthreshold=0 -Dsun.java2d.uiScale=1 IncorrectManagedImageSourceOffset
+ * @run main/othervm -Dsun.java2d.accthreshold=0 -Dsun.java2d.uiScale=2 IncorrectManagedImageSourceOffset
+ */
+public final class IncorrectManagedImageSourceOffset {
+
+    // See the same test for unmanaged images: IncorrectUnmanagedImageSourceOffset
+
+    private static final int[] TYPES = {TYPE_INT_RGB, TYPE_INT_ARGB,
+                                        TYPE_INT_ARGB_PRE, TYPE_INT_BGR,
+                                        TYPE_3BYTE_BGR, TYPE_4BYTE_ABGR,
+                                        TYPE_4BYTE_ABGR_PRE,
+                                        /*TYPE_USHORT_565_RGB,
+                                        TYPE_USHORT_555_RGB, TYPE_BYTE_GRAY,
+                                        TYPE_USHORT_GRAY,*/ TYPE_BYTE_BINARY,
+                                        TYPE_BYTE_INDEXED, TYPE_CUSTOM};
+    private static final int[] TRANSPARENCIES = {OPAQUE, BITMASK, TRANSLUCENT};
+
+    public static void main(final String[] args) throws IOException {
+        for (final int viType : TRANSPARENCIES) {
+            for (final int biType : TYPES) {
+                BufferedImage bi = makeManagedBI(biType);
+                fill(bi);
+                test(bi, viType);
+            }
+        }
+    }
+
+    private static void test(BufferedImage bi, int type)
+            throws IOException {
+        GraphicsEnvironment ge = GraphicsEnvironment
+                .getLocalGraphicsEnvironment();
+        GraphicsConfiguration gc = ge.getDefaultScreenDevice()
+                                     .getDefaultConfiguration();
+        VolatileImage vi = gc.createCompatibleVolatileImage(511, 255, type);
+        BufferedImage gold = gc.createCompatibleImage(511, 255, type);
+        // draw to compatible Image
+        Graphics2D big = gold.createGraphics();
+        // force scaled blit
+        big.drawImage(bi, 7, 11, 127, 111, 7, 11, 127 * 2, 111, null);
+        big.dispose();
+        // draw to volatile image
+        BufferedImage snapshot;
+        while (true) {
+            vi.validate(gc);
+            if (vi.validate(gc) != VolatileImage.IMAGE_OK) {
+                try {
+                    Thread.sleep(100);
+                } catch (final InterruptedException ignored) {
+                }
+                continue;
+            }
+            Graphics2D vig = vi.createGraphics();
+            // force scaled blit
+            vig.drawImage(bi, 7, 11, 127, 111, 7, 11, 127 * 2, 111, null);
+            vig.dispose();
+            snapshot = vi.getSnapshot();
+            if (vi.contentsLost()) {
+                try {
+                    Thread.sleep(100);
+                } catch (final InterruptedException ignored) {
+                }
+                continue;
+            }
+            break;
+        }
+        // validate images
+        for (int x = 7; x < 127; ++x) {
+            for (int y = 11; y < 111; ++y) {
+                if (gold.getRGB(x, y) != snapshot.getRGB(x, y)) {
+                    ImageIO.write(gold, "png", new File("gold.png"));
+                    ImageIO.write(snapshot, "png", new File("bi.png"));
+                    throw new RuntimeException("Test failed.");
+                }
+            }
+        }
+    }
+
+    private static BufferedImage makeManagedBI(final int type) {
+        final BufferedImage bi;
+        if (type == TYPE_CUSTOM) {
+            bi = makeCustomManagedBI();
+        } else {
+            bi = new BufferedImage(511, 255, type);
+        }
+        bi.setAccelerationPriority(1.0f);
+        return bi;
+    }
+
+    /**
+     * Returns the custom buffered image, which mostly identical to
+     * BufferedImage.(w,h,TYPE_3BYTE_BGR), but uses the bigger scanlineStride.
+     * This means that the raster will have gaps, between the rows.
+     */
+    private static BufferedImage makeCustomManagedBI() {
+        int w = 511, h = 255;
+        ColorSpace cs = ColorSpace.getInstance(ColorSpace.CS_sRGB);
+        int[] nBits = {8, 8, 8};
+        int[] bOffs = {2, 1, 0};
+        ColorModel colorModel = new ComponentColorModel(cs, nBits, false, false,
+                                                        Transparency.OPAQUE,
+                                                        DataBuffer.TYPE_BYTE);
+        WritableRaster raster =
+                Raster.createInterleavedRaster(DataBuffer.TYPE_BYTE, w, h,
+                                               w * 3 + 2, 3, bOffs, null);
+        BufferedImage bi = new BufferedImage(colorModel, raster, true, null);
+        SunWritableRaster.makeTrackable(raster.getDataBuffer());
+        SunWritableRaster.markDirty(bi);
+        return bi;
+    }
+
+    private static void fill(final Image image) {
+        final Graphics2D graphics = (Graphics2D) image.getGraphics();
+        graphics.setComposite(AlphaComposite.Src);
+        for (int i = 0; i < image.getHeight(null); ++i) {
+            graphics.setColor(new Color(i, 0, 0));
+            graphics.fillRect(0, i, image.getWidth(null), 1);
+        }
+        graphics.dispose();
+    }
+}
--- a/test/jdk/java/awt/image/DrawImage/IncorrectUnmanagedImageSourceOffset.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/test/jdk/java/awt/image/DrawImage/IncorrectUnmanagedImageSourceOffset.java	Wed Oct 23 14:01:17 2019 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014, 2016, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2014, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -27,30 +27,52 @@
 import java.awt.GraphicsConfiguration;
 import java.awt.GraphicsEnvironment;
 import java.awt.Image;
+import java.awt.Transparency;
+import java.awt.color.ColorSpace;
 import java.awt.image.BufferedImage;
+import java.awt.image.ColorModel;
+import java.awt.image.ComponentColorModel;
 import java.awt.image.DataBuffer;
 import java.awt.image.DataBufferByte;
 import java.awt.image.DataBufferInt;
 import java.awt.image.DataBufferShort;
+import java.awt.image.Raster;
 import java.awt.image.VolatileImage;
+import java.awt.image.WritableRaster;
 import java.io.File;
 import java.io.IOException;
 
 import javax.imageio.ImageIO;
 
-import static java.awt.Transparency.*;
-import static java.awt.image.BufferedImage.*;
+import static java.awt.Transparency.BITMASK;
+import static java.awt.Transparency.OPAQUE;
+import static java.awt.Transparency.TRANSLUCENT;
+import static java.awt.image.BufferedImage.TYPE_3BYTE_BGR;
+import static java.awt.image.BufferedImage.TYPE_4BYTE_ABGR;
+import static java.awt.image.BufferedImage.TYPE_4BYTE_ABGR_PRE;
+import static java.awt.image.BufferedImage.TYPE_BYTE_BINARY;
+import static java.awt.image.BufferedImage.TYPE_BYTE_INDEXED;
+import static java.awt.image.BufferedImage.TYPE_CUSTOM;
+import static java.awt.image.BufferedImage.TYPE_INT_ARGB;
+import static java.awt.image.BufferedImage.TYPE_INT_ARGB_PRE;
+import static java.awt.image.BufferedImage.TYPE_INT_BGR;
+import static java.awt.image.BufferedImage.TYPE_INT_RGB;
 
 /**
  * @test
  * @key headful
- * @bug 8029253
+ * @bug 8029253 6207877
  * @summary Tests asymmetric source offsets when unmanaged image is drawn to VI.
  *          Results of the blit to compatibleImage are used for comparison.
  * @author Sergey Bylokhov
+ * @run main/othervm IncorrectUnmanagedImageSourceOffset
+ * @run main/othervm -Dsun.java2d.uiScale=1 IncorrectUnmanagedImageSourceOffset
+ * @run main/othervm -Dsun.java2d.uiScale=2 IncorrectUnmanagedImageSourceOffset
  */
 public final class IncorrectUnmanagedImageSourceOffset {
 
+    // See the same test for managed images: IncorrectManagedImageSourceOffset
+
     private static final int[] TYPES = {TYPE_INT_RGB, TYPE_INT_ARGB,
                                         TYPE_INT_ARGB_PRE, TYPE_INT_BGR,
                                         TYPE_3BYTE_BGR, TYPE_4BYTE_ABGR,
@@ -58,7 +80,7 @@
                                         /*TYPE_USHORT_565_RGB,
                                         TYPE_USHORT_555_RGB, TYPE_BYTE_GRAY,
                                         TYPE_USHORT_GRAY,*/ TYPE_BYTE_BINARY,
-                                        TYPE_BYTE_INDEXED};
+                                        TYPE_BYTE_INDEXED, TYPE_CUSTOM};
     private static final int[] TRANSPARENCIES = {OPAQUE, BITMASK, TRANSLUCENT};
 
     public static void main(final String[] args) throws IOException {
@@ -122,7 +144,12 @@
     }
 
     private static BufferedImage makeUnmanagedBI(final int type) {
-        final BufferedImage bi = new BufferedImage(511, 255, type);
+        final BufferedImage bi;
+        if (type == TYPE_CUSTOM) {
+            bi = makeCustomUnmanagedBI();
+        } else {
+            bi = new BufferedImage(511, 255, type);
+        }
         final DataBuffer db = bi.getRaster().getDataBuffer();
         if (db instanceof DataBufferInt) {
             ((DataBufferInt) db).getData();
@@ -130,15 +157,30 @@
             ((DataBufferShort) db).getData();
         } else if (db instanceof DataBufferByte) {
             ((DataBufferByte) db).getData();
-        } else {
-            try {
-                bi.setAccelerationPriority(0.0f);
-            } catch (final Throwable ignored) {
-            }
         }
+        bi.setAccelerationPriority(0.0f);
         return bi;
     }
 
+    /**
+     * Returns the custom buffered image, which mostly identical to
+     * BufferedImage.(w,h,TYPE_3BYTE_BGR), but uses the bigger scanlineStride.
+     * This means that the raster will have gaps, between the rows.
+     */
+    private static BufferedImage makeCustomUnmanagedBI() {
+        int w = 511, h = 255;
+        ColorSpace cs = ColorSpace.getInstance(ColorSpace.CS_sRGB);
+        int[] nBits = {8, 8, 8};
+        int[] bOffs = {2, 1, 0};
+        ColorModel colorModel = new ComponentColorModel(cs, nBits, false, false,
+                                                        Transparency.OPAQUE,
+                                                        DataBuffer.TYPE_BYTE);
+        WritableRaster raster =
+                Raster.createInterleavedRaster(DataBuffer.TYPE_BYTE, w, h,
+                                               w * 3 + 2, 3, bOffs, null);
+        return new BufferedImage(colorModel, raster, true, null);
+    }
+
     private static void fill(final Image image) {
         final Graphics2D graphics = (Graphics2D) image.getGraphics();
         graphics.setComposite(AlphaComposite.Src);
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/jdk/java/awt/image/DrawImage/SimpleManagedImage.java	Wed Oct 23 14:01:17 2019 -0400
@@ -0,0 +1,196 @@
+/*
+ * Copyright (c) 2014, 2019, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+import java.awt.AlphaComposite;
+import java.awt.Color;
+import java.awt.Graphics2D;
+import java.awt.GraphicsConfiguration;
+import java.awt.GraphicsEnvironment;
+import java.awt.Image;
+import java.awt.Transparency;
+import java.awt.color.ColorSpace;
+import java.awt.image.BufferedImage;
+import java.awt.image.ColorModel;
+import java.awt.image.ComponentColorModel;
+import java.awt.image.DataBuffer;
+import java.awt.image.Raster;
+import java.awt.image.VolatileImage;
+import java.awt.image.WritableRaster;
+import java.io.File;
+import java.io.IOException;
+
+import javax.imageio.ImageIO;
+
+import sun.awt.image.SunWritableRaster;
+
+import static java.awt.Transparency.BITMASK;
+import static java.awt.Transparency.OPAQUE;
+import static java.awt.Transparency.TRANSLUCENT;
+import static java.awt.image.BufferedImage.TYPE_3BYTE_BGR;
+import static java.awt.image.BufferedImage.TYPE_4BYTE_ABGR;
+import static java.awt.image.BufferedImage.TYPE_4BYTE_ABGR_PRE;
+import static java.awt.image.BufferedImage.TYPE_BYTE_BINARY;
+import static java.awt.image.BufferedImage.TYPE_BYTE_INDEXED;
+import static java.awt.image.BufferedImage.TYPE_CUSTOM;
+import static java.awt.image.BufferedImage.TYPE_INT_ARGB;
+import static java.awt.image.BufferedImage.TYPE_INT_ARGB_PRE;
+import static java.awt.image.BufferedImage.TYPE_INT_BGR;
+import static java.awt.image.BufferedImage.TYPE_INT_RGB;
+
+/**
+ * @test
+ * @key headful
+ * @bug 8029253 6207877
+ * @summary Tests the case when managed image is drawn to VI.
+ *          Results of the blit to compatibleImage are used for comparison.
+ * @author Sergey Bylokhov
+ * @modules java.desktop/sun.awt.image
+ * @run main/othervm -Dsun.java2d.accthreshold=0 SimpleManagedImage
+ * @run main/othervm -Dsun.java2d.accthreshold=0 -Dsun.java2d.uiScale=1 SimpleManagedImage
+ * @run main/othervm -Dsun.java2d.accthreshold=0 -Dsun.java2d.uiScale=2 SimpleManagedImage
+ */
+public final class SimpleManagedImage {
+
+    // See the same test for unmanaged images: SimpleUnmanagedImage
+
+    private static final int[] TYPES = {TYPE_INT_RGB, TYPE_INT_ARGB,
+                                        TYPE_INT_ARGB_PRE, TYPE_INT_BGR,
+                                        TYPE_3BYTE_BGR, TYPE_4BYTE_ABGR,
+                                        TYPE_4BYTE_ABGR_PRE,
+                                        /*TYPE_USHORT_565_RGB,
+                                        TYPE_USHORT_555_RGB, TYPE_BYTE_GRAY,
+                                        TYPE_USHORT_GRAY,*/ TYPE_BYTE_BINARY,
+                                        TYPE_BYTE_INDEXED, TYPE_CUSTOM};
+    private static final int[] TRANSPARENCIES = {OPAQUE, BITMASK, TRANSLUCENT};
+
+    public static void main(final String[] args) throws IOException {
+        for (final int viType : TRANSPARENCIES) {
+            for (final int biType : TYPES) {
+                BufferedImage bi = makeManagedBI(biType);
+                fill(bi);
+                test(bi, viType);
+            }
+        }
+    }
+
+    private static void test(BufferedImage bi, int type)
+            throws IOException {
+        GraphicsEnvironment ge = GraphicsEnvironment
+                .getLocalGraphicsEnvironment();
+        GraphicsConfiguration gc = ge.getDefaultScreenDevice()
+                                     .getDefaultConfiguration();
+        VolatileImage vi = gc.createCompatibleVolatileImage(1000, 1000, type);
+        BufferedImage gold = gc.createCompatibleImage(1000, 1000, type);
+        // draw to compatible Image
+        init(gold);
+        Graphics2D big = gold.createGraphics();
+        big.drawImage(bi, 7, 11, null);
+        big.dispose();
+        // draw to volatile image
+        BufferedImage snapshot;
+        while (true) {
+            vi.validate(gc);
+            if (vi.validate(gc) != VolatileImage.IMAGE_OK) {
+                try {
+                    Thread.sleep(100);
+                } catch (final InterruptedException ignored) {
+                }
+                continue;
+            }
+            init(vi);
+            Graphics2D vig = vi.createGraphics();
+            vig.drawImage(bi, 7, 11, null);
+            vig.dispose();
+            snapshot = vi.getSnapshot();
+            if (vi.contentsLost()) {
+                try {
+                    Thread.sleep(100);
+                } catch (final InterruptedException ignored) {
+                }
+                continue;
+            }
+            break;
+        }
+        // validate images
+        for (int x = 0; x < 1000; ++x) {
+            for (int y = 0; y < 1000; ++y) {
+                if (gold.getRGB(x, y) != snapshot.getRGB(x, y)) {
+                    ImageIO.write(gold, "png", new File("gold.png"));
+                    ImageIO.write(snapshot, "png", new File("bi.png"));
+                    throw new RuntimeException("Test failed.");
+                }
+            }
+        }
+    }
+
+    private static BufferedImage makeManagedBI(final int type) {
+        final BufferedImage bi;
+        if (type == TYPE_CUSTOM) {
+            bi = makeCustomManagedBI();
+        } else {
+            bi = new BufferedImage(511, 255, type);
+        }
+        bi.setAccelerationPriority(1.0f);
+        return bi;
+    }
+
+    /**
+     * Returns the custom buffered image, which mostly identical to
+     * BufferedImage.(w,h,TYPE_3BYTE_BGR), but uses the bigger scanlineStride.
+     * This means that the raster will have gaps, between the rows.
+     */
+    private static BufferedImage makeCustomManagedBI() {
+        int w = 511, h = 255;
+        ColorSpace cs = ColorSpace.getInstance(ColorSpace.CS_sRGB);
+        int[] nBits = {8, 8, 8};
+        int[] bOffs = {2, 1, 0};
+        ColorModel colorModel = new ComponentColorModel(cs, nBits, false, false,
+                                                        Transparency.OPAQUE,
+                                                        DataBuffer.TYPE_BYTE);
+        WritableRaster raster =
+                Raster.createInterleavedRaster(DataBuffer.TYPE_BYTE, w, h,
+                                               w * 3 + 2, 3, bOffs, null);
+        BufferedImage bi = new BufferedImage(colorModel, raster, true, null);
+        SunWritableRaster.makeTrackable(raster.getDataBuffer());
+        SunWritableRaster.markDirty(bi);
+        return bi;
+    }
+
+    private static void init(final Image image) {
+        final Graphics2D graphics = (Graphics2D) image.getGraphics();
+        graphics.setComposite(AlphaComposite.Src);
+        graphics.setColor(new Color(0, 0, 0, 0));
+        graphics.fillRect(0, 0, image.getWidth(null), image.getHeight(null));
+        graphics.dispose();
+    }
+
+    private static void fill(final Image image) {
+        final Graphics2D graphics = (Graphics2D) image.getGraphics();
+        graphics.setComposite(AlphaComposite.Src);
+        for (int i = 0; i < image.getHeight(null); ++i) {
+            graphics.setColor(new Color(i, 0, 0));
+            graphics.fillRect(0, i, image.getWidth(null), 1);
+        }
+        graphics.dispose();
+    }
+}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/jdk/java/awt/image/DrawImage/SimpleUnmanagedImage.java	Wed Oct 23 14:01:17 2019 -0400
@@ -0,0 +1,201 @@
+/*
+ * Copyright (c) 2014, 2019, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+import java.awt.AlphaComposite;
+import java.awt.Color;
+import java.awt.Graphics2D;
+import java.awt.GraphicsConfiguration;
+import java.awt.GraphicsEnvironment;
+import java.awt.Image;
+import java.awt.Transparency;
+import java.awt.color.ColorSpace;
+import java.awt.image.BufferedImage;
+import java.awt.image.ColorModel;
+import java.awt.image.ComponentColorModel;
+import java.awt.image.DataBuffer;
+import java.awt.image.DataBufferByte;
+import java.awt.image.DataBufferInt;
+import java.awt.image.DataBufferShort;
+import java.awt.image.Raster;
+import java.awt.image.VolatileImage;
+import java.awt.image.WritableRaster;
+import java.io.File;
+import java.io.IOException;
+
+import javax.imageio.ImageIO;
+
+import static java.awt.Transparency.BITMASK;
+import static java.awt.Transparency.OPAQUE;
+import static java.awt.Transparency.TRANSLUCENT;
+import static java.awt.image.BufferedImage.TYPE_3BYTE_BGR;
+import static java.awt.image.BufferedImage.TYPE_4BYTE_ABGR;
+import static java.awt.image.BufferedImage.TYPE_4BYTE_ABGR_PRE;
+import static java.awt.image.BufferedImage.TYPE_BYTE_BINARY;
+import static java.awt.image.BufferedImage.TYPE_BYTE_INDEXED;
+import static java.awt.image.BufferedImage.TYPE_CUSTOM;
+import static java.awt.image.BufferedImage.TYPE_INT_ARGB;
+import static java.awt.image.BufferedImage.TYPE_INT_ARGB_PRE;
+import static java.awt.image.BufferedImage.TYPE_INT_BGR;
+import static java.awt.image.BufferedImage.TYPE_INT_RGB;
+
+/**
+ * @test
+ * @key headful
+ * @bug 8029253 6207877
+ * @summary Tests the case when unmanaged image is drawn to VI.
+ *          Results of the blit to compatibleImage are used for comparison.
+ * @author Sergey Bylokhov
+ * @run main/othervm SimpleUnmanagedImage
+ * @run main/othervm -Dsun.java2d.uiScale=1 SimpleUnmanagedImage
+ * @run main/othervm -Dsun.java2d.uiScale=2 SimpleUnmanagedImage
+ */
+public final class SimpleUnmanagedImage {
+
+    // See the same test for managed images: SimpleManagedImage
+
+    private static final int[] TYPES = {TYPE_INT_RGB, TYPE_INT_ARGB,
+                                        TYPE_INT_ARGB_PRE, TYPE_INT_BGR,
+                                        TYPE_3BYTE_BGR, TYPE_4BYTE_ABGR,
+                                        TYPE_4BYTE_ABGR_PRE,
+                                        /*TYPE_USHORT_565_RGB,
+                                        TYPE_USHORT_555_RGB, TYPE_BYTE_GRAY,
+                                        TYPE_USHORT_GRAY,*/ TYPE_BYTE_BINARY,
+                                        TYPE_BYTE_INDEXED, TYPE_CUSTOM};
+    private static final int[] TRANSPARENCIES = {OPAQUE, BITMASK, TRANSLUCENT};
+
+    public static void main(final String[] args) throws IOException {
+        for (final int viType : TRANSPARENCIES) {
+            for (final int biType : TYPES) {
+                BufferedImage bi = makeUnmanagedBI(biType);
+                fill(bi);
+                test(bi, viType);
+            }
+        }
+    }
+
+    private static void test(BufferedImage bi, int type)
+            throws IOException {
+        GraphicsEnvironment ge = GraphicsEnvironment
+                .getLocalGraphicsEnvironment();
+        GraphicsConfiguration gc = ge.getDefaultScreenDevice()
+                                     .getDefaultConfiguration();
+        VolatileImage vi = gc.createCompatibleVolatileImage(1000, 1000, type);
+        BufferedImage gold = gc.createCompatibleImage(1000, 1000, type);
+        // draw to compatible Image
+        init(gold);
+        Graphics2D big = gold.createGraphics();
+        big.drawImage(bi, 7, 11, null);
+        big.dispose();
+        // draw to volatile image
+        BufferedImage snapshot;
+        while (true) {
+            vi.validate(gc);
+            if (vi.validate(gc) != VolatileImage.IMAGE_OK) {
+                try {
+                    Thread.sleep(100);
+                } catch (final InterruptedException ignored) {
+                }
+                continue;
+            }
+            init(vi);
+            Graphics2D vig = vi.createGraphics();
+            vig.drawImage(bi, 7, 11, null);
+            vig.dispose();
+            snapshot = vi.getSnapshot();
+            if (vi.contentsLost()) {
+                try {
+                    Thread.sleep(100);
+                } catch (final InterruptedException ignored) {
+                }
+                continue;
+            }
+            break;
+        }
+        // validate images
+        for (int x = 0; x < 1000; ++x) {
+            for (int y = 0; y < 1000; ++y) {
+                if (gold.getRGB(x, y) != snapshot.getRGB(x, y)) {
+                    ImageIO.write(gold, "png", new File("gold.png"));
+                    ImageIO.write(snapshot, "png", new File("bi.png"));
+                    throw new RuntimeException("Test failed.");
+                }
+            }
+        }
+    }
+
+    private static BufferedImage makeUnmanagedBI(final int type) {
+        final BufferedImage bi;
+        if (type == TYPE_CUSTOM) {
+            bi = makeCustomUnmanagedBI();
+        } else {
+            bi = new BufferedImage(511, 255, type);
+        }
+        final DataBuffer db = bi.getRaster().getDataBuffer();
+        if (db instanceof DataBufferInt) {
+            ((DataBufferInt) db).getData();
+        } else if (db instanceof DataBufferShort) {
+            ((DataBufferShort) db).getData();
+        } else if (db instanceof DataBufferByte) {
+            ((DataBufferByte) db).getData();
+        }
+        bi.setAccelerationPriority(0.0f);
+        return bi;
+    }
+
+    /**
+     * Returns the custom buffered image, which mostly identical to
+     * BufferedImage.(w,h,TYPE_3BYTE_BGR), but uses the bigger scanlineStride.
+     * This means that the raster will have gaps, between the rows.
+     */
+    private static BufferedImage makeCustomUnmanagedBI() {
+        int w = 511, h = 255;
+        ColorSpace cs = ColorSpace.getInstance(ColorSpace.CS_sRGB);
+        int[] nBits = {8, 8, 8};
+        int[] bOffs = {2, 1, 0};
+        ColorModel colorModel = new ComponentColorModel(cs, nBits, false, false,
+                                                        Transparency.OPAQUE,
+                                                        DataBuffer.TYPE_BYTE);
+        WritableRaster raster =
+                Raster.createInterleavedRaster(DataBuffer.TYPE_BYTE, w, h,
+                                               w * 3 + 2, 3, bOffs, null);
+        return new BufferedImage(colorModel, raster, true, null);
+    }
+
+    private static void init(final Image image) {
+        final Graphics2D graphics = (Graphics2D) image.getGraphics();
+        graphics.setComposite(AlphaComposite.Src);
+        graphics.setColor(new Color(0, 0, 0, 0));
+        graphics.fillRect(0, 0, image.getWidth(null), image.getHeight(null));
+        graphics.dispose();
+    }
+
+    private static void fill(final Image image) {
+        final Graphics2D graphics = (Graphics2D) image.getGraphics();
+        graphics.setComposite(AlphaComposite.Src);
+        for (int i = 0; i < image.getHeight(null); ++i) {
+            graphics.setColor(new Color(i, 0, 0));
+            graphics.fillRect(0, i, image.getWidth(null), 1);
+        }
+        graphics.dispose();
+    }
+}
--- a/test/jdk/java/io/FilePermission/SpecTests.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/test/jdk/java/io/FilePermission/SpecTests.java	Wed Oct 23 14:01:17 2019 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2005, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2005, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -22,11 +22,10 @@
  */
 
 /**
- *
  * @test
- * @bug 4955804
- * @summary Tests for FilePermission constructor spec for null
- *      and empty String parameters
+ * @bug 4955804 8230407
+ * @summary Tests for FilePermission constructor spec for null,
+ *      empty and misformated String parameters
  */
 
 import java.io.*;
@@ -37,10 +36,11 @@
         String ILE = "java.lang.IllegalArgumentException";
         String NPE = "java.lang.NullPointerException";
 
-        String names[] =   {"", null, "foo", "foo", "foo", "foo"};
+        String names[] =   {"", null, "foo", "foo", "foo", "foo", "foo"};
         String actions[] = {"read", "read", "", null, "junk",
-                         "read,write,execute,delete,rename"};
-        String exps[] = { null, NPE, ILE, ILE, ILE, ILE };
+                            "read,write,execute,delete,rename",
+                            ",read"};
+        String exps[] = { null, NPE, ILE, ILE, ILE, ILE, ILE };
 
         FilePermission permit;
         for (int i = 0; i < names.length; i++) {
@@ -54,15 +54,19 @@
                                         " for name:" + names[i] +
                                         " actions:" + actions[i]);
                 } else {
-                   System.out.println(names[i] + ", [" + actions[i] + "] " +
-                         "resulted in " + exps[i] + " as Expected");
+                    System.out.println(names[i] + ", [" + actions[i] + "] " +
+                            "resulted in " + exps[i] + " as Expected");
+                    continue;
                 }
-           }
-           if (exps[i] == null) {
+            }
+            if (exps[i] == null) {
                 System.out.println(names[i] + ", [" + actions[i] + "] " +
-                         "resulted in No Exception as Expected");
+                        "resulted in No Exception as Expected");
+            } else {
+                throw new Exception("Expecting: " + exps[i] +
+                                    " for name:" + names[i] +
+                                    " actions:" + actions[i]);
             }
         }
-
     }
 }
--- a/test/jdk/java/lang/String/Formatted.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/test/jdk/java/lang/String/Formatted.java	Wed Oct 23 14:01:17 2019 -0400
@@ -25,7 +25,8 @@
  * @test
  * bug 8203444
  * @summary Unit tests for instance versions of String#format
- * @run main Formatted
+ * @compile --enable-preview -source 14 Formatted.java
+ * @run main/othervm --enable-preview Formatted
  */
 
 import java.util.Locale;
--- a/test/jdk/java/lang/String/StripIndent.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/test/jdk/java/lang/String/StripIndent.java	Wed Oct 23 14:01:17 2019 -0400
@@ -25,7 +25,8 @@
  * @test
  * @bug 8223775
  * @summary This exercises String#stripIndent patterns and limits.
- * @run main StripIndent
+ * @compile --enable-preview -source 14 StripIndent.java
+ * @run main/othervm --enable-preview StripIndent
  */
 
 public class StripIndent {
--- a/test/jdk/java/lang/String/TranslateEscapes.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/test/jdk/java/lang/String/TranslateEscapes.java	Wed Oct 23 14:01:17 2019 -0400
@@ -25,7 +25,8 @@
  * @test
  * @bug 8223780
  * @summary This exercises String#translateEscapes patterns and limits.
- * @run main TranslateEscapes
+ * @compile --enable-preview -source 14 TranslateEscapes.java
+ * @run main/othervm --enable-preview TranslateEscapes
  */
 
 public class TranslateEscapes {
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/jdk/java/lang/ThreadLocal/ReplaceStaleEntry.java	Wed Oct 23 14:01:17 2019 -0400
@@ -0,0 +1,83 @@
+/*
+ * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * @test
+ * @bug 8209824
+ * @summary per latest JDK code coverage report, 2 methods replaceStaleEntry
+ *          and prevIndex in ThreadLocal.ThreadLocalMap are not touched
+ *          by any JDK regression tests, this is to trigger the code paths.
+ * @modules java.base/java.lang:+open
+ * @run testng ReplaceStaleEntry
+ */
+
+import java.lang.reflect.Field;
+import java.util.HashMap;
+import java.util.Map;
+
+import static org.testng.Assert.assertEquals;
+import org.testng.annotations.BeforeClass;
+import org.testng.annotations.Test;
+
+public class ReplaceStaleEntry {
+
+    public static int INITIAL_CAPACITY;
+
+    @BeforeClass
+    public static void setup() throws Exception {
+        Class<?> clazz = Class.forName("java.lang.ThreadLocal$ThreadLocalMap");
+        Field f = clazz.getDeclaredField("INITIAL_CAPACITY");
+        f.setAccessible(true);
+        INITIAL_CAPACITY = f.getInt(null);
+        System.out.println("INITIAL_CAPACITY: " + INITIAL_CAPACITY);
+    }
+
+    /**
+     * This test triggers the code path to replaceStaleEntry, so as prevIndex is
+     * triggered too as it's called by replaceStaleEntry.
+     * The code paths must be triggered by reusing an already used entry in the
+     * map's entry table. The code below
+     *  1. first occupies the entries
+     *  2. then expunges the entries by removing strong references to thread locals
+     *  3. then reuse some of entries by adding more thread locals to the thread
+     * and, the above steps are run for several times by adding more and more
+     * thread locals, also trigger rehash of the map.
+     */
+    @Test
+    public static void test() {
+        Map<Integer, ThreadLocal> locals = new HashMap<>();
+        for (int j = 1; j < 32; j *= 2) {
+            int loop = INITIAL_CAPACITY * j;
+            for (int i = 0; i < loop; i++) {
+                ThreadLocal l = new ThreadLocal<Integer>();
+                l.set(i);
+                locals.put(i, l);
+            }
+            locals.keySet().stream().forEach(i -> {
+                assertEquals((int)locals.get(i).get(), (int)i, "Unexpected thread local value!");
+            });
+            locals.clear();
+            System.gc();
+        }
+    }
+}
--- a/test/jdk/java/math/BigInteger/DivisionOverflow.java	Wed Oct 23 13:53:41 2019 -0400
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,55 +0,0 @@
-/*
- * Copyright (c) 2011, 2013, Oracle and/or its affiliates. All rights reserved.
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This code is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 only, as
- * published by the Free Software Foundation.
- *
- * This code is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
- * version 2 for more details (a copy is included in the LICENSE file that
- * accompanied this code).
- *
- * You should have received a copy of the GNU General Public License version
- * 2 along with this work; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
- * or visit www.oracle.com if you need additional information or have any
- * questions.
- */
-
-/*
- * @test
- * @bug 8022780
- * @summary Test division of large values
- * @run main/othervm -Xshare:off DivisionOverflow
- * @author Dmitry Nadezhin
- */
-import java.math.BigInteger;
-
-public class DivisionOverflow {
-
-    public static void main(String[] args) {
-        try {
-            BigInteger a = BigInteger.ONE.shiftLeft(2147483646);
-            BigInteger b = BigInteger.ONE.shiftLeft(1568);
-            BigInteger[] qr = a.divideAndRemainder(b);
-            BigInteger q = qr[0];
-            BigInteger r = qr[1];
-            if (!r.equals(BigInteger.ZERO)) {
-                throw new RuntimeException("Incorrect signum() of remainder " + r.signum());
-            }
-            if (q.bitLength() != 2147482079) {
-                throw new RuntimeException("Incorrect bitLength() of quotient " + q.bitLength());
-            }
-            System.out.println("Division of large values passed without overflow.");
-        } catch (OutOfMemoryError e) {
-            // possible
-            System.err.println("DivisionOverflow skipped: OutOfMemoryError");
-            System.err.println("Run jtreg with -javaoption:-Xmx8g");
-        }
-    }
-}
--- a/test/jdk/java/math/BigInteger/StringConstructorOverflow.java	Wed Oct 23 13:53:41 2019 -0400
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,62 +0,0 @@
-/*
- * Copyright (c) 2013, 2019, Oracle and/or its affiliates. All rights reserved.
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This code is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 only, as
- * published by the Free Software Foundation.
- *
- * This code is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
- * version 2 for more details (a copy is included in the LICENSE file that
- * accompanied this code).
- *
- * You should have received a copy of the GNU General Public License version
- * 2 along with this work; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
- * or visit www.oracle.com if you need additional information or have any
- * questions.
- */
-
-/*
- * @test
- * @bug 8021204
- * @summary Test constructor BigInteger(String val, int radix) on very long string
- * @ignore This test has huge memory requirements
- * @run main/othervm -Xshare:off -Xmx8g StringConstructorOverflow
- * @author Dmitry Nadezhin
- */
-import java.math.BigInteger;
-
-public class StringConstructorOverflow {
-
-    // String with hexadecimal value pow(2,pow(2,34))+1
-    private static String makeLongHexString() {
-        StringBuilder sb = new StringBuilder();
-        sb.append('1');
-        for (int i = 0; i < (1 << 30) - 1; i++) {
-            sb.append('0');
-        }
-        sb.append('1');
-        return sb.toString();
-    }
-
-    public static void main(String[] args) {
-        try {
-            BigInteger bi = new BigInteger(makeLongHexString(), 16);
-            if (bi.compareTo(BigInteger.ONE) <= 0) {
-                throw new RuntimeException("Incorrect result " + bi.toString());
-            }
-        } catch (ArithmeticException e) {
-            // expected
-            System.out.println("Overflow is reported by ArithmeticException, as expected");
-        } catch (OutOfMemoryError e) {
-            // possible
-            System.err.println("StringConstructorOverflow skipped: OutOfMemoryError");
-            System.err.println("Run jtreg with -javaoption:-Xmx8g");
-        }
-    }
-}
--- a/test/jdk/java/math/BigInteger/SymmetricRangeTests.java	Wed Oct 23 13:53:41 2019 -0400
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,665 +0,0 @@
-/*
- * Copyright (c) 2013, 2019, Oracle and/or its affiliates. All rights reserved.
- * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
- *
- * This code is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 only, as
- * published by the Free Software Foundation.
- *
- * This code is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
- * version 2 for more details (a copy is included in the LICENSE file that
- * accompanied this code).
- *
- * You should have received a copy of the GNU General Public License version
- * 2 along with this work; if not, write to the Free Software Foundation,
- * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
- *
- * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
- * or visit www.oracle.com if you need additional information or have any
- * questions.
- */
-
-/*
- * @test
- * @library /test/lib
- * @ignore This test has huge memory requirements
- * @run main/timeout=180/othervm -Xmx8g SymmetricRangeTests
- * @bug 6910473 8021204 8021203 9005933 8074460 8078672
- * @summary Test range of BigInteger values (use -Dseed=X to set PRNG seed)
- * @author Dmitry Nadezhin
- * @key randomness
- */
-import java.io.ByteArrayInputStream;
-import java.io.ByteArrayOutputStream;
-import java.io.IOException;
-import java.io.ObjectInputStream;
-import java.io.ObjectOutputStream;
-import java.util.Arrays;
-import java.math.BigInteger;
-import java.util.Random;
-import jdk.test.lib.RandomFactory;
-
-public class SymmetricRangeTests {
-
-    private static final BigInteger MAX_VALUE = makeMaxValue();
-    private static final BigInteger MIN_VALUE = MAX_VALUE.negate();
-
-    private static BigInteger makeMaxValue() {
-        byte[] ba = new byte[1 << 28];
-        Arrays.fill(ba, (byte) 0xFF);
-        ba[0] = (byte) 0x7F;
-        return new BigInteger(ba);
-    }
-
-    private static void check(String msg, BigInteger actual, BigInteger expected) {
-        if (!actual.equals(expected)) {
-            throw new RuntimeException(msg + ".bitLength()=" + actual.bitLength());
-        }
-    }
-
-    private static void check(String msg, double actual, double expected) {
-        if (actual != expected) {
-            throw new RuntimeException(msg + "=" + actual);
-        }
-    }
-
-    private static void check(String msg, float actual, float expected) {
-        if (actual != expected) {
-            throw new RuntimeException(msg + "=" + actual);
-        }
-    }
-
-    private static void check(String msg, long actual, long expected) {
-        if (actual != expected) {
-            throw new RuntimeException(msg + "=" + actual);
-        }
-    }
-
-    private static void check(String msg, int actual, int expected) {
-        if (actual != expected) {
-            throw new RuntimeException(msg + "=" + actual);
-        }
-    }
-
-    private static void testOverflowInMakePositive() {
-        System.out.println("Testing overflow in BigInteger.makePositive");
-        byte[] ba = new byte[Integer.MAX_VALUE - 2];
-        ba[0] = (byte) 0x80;
-        try {
-            BigInteger actual = new BigInteger(ba);
-            throw new RuntimeException("new BigInteger(ba).bitLength()=" + actual.bitLength());
-        } catch (ArithmeticException e) {
-            // expected
-        }
-    }
-
-    private static void testBug8021204() {
-        System.out.println("Testing Bug 8021204");
-        StringBuilder sb = new StringBuilder();
-        sb.append('1');
-        for (int i = 0; i < (1 << 30) - 1; i++) {
-            sb.append('0');
-        }
-        sb.append('1');
-        String s = sb.toString();
-        sb = null;
-        try {
-            BigInteger actual = new BigInteger(s, 16);
-            throw new RuntimeException("new BigInteger(\"1000...001\").bitLength()=" + actual.bitLength());
-        } catch (ArithmeticException e) {
-            // expected
-        }
-    }
-
-    private static void testOverflowInBitSieve() {
-        System.out.println("Testing overflow in BitSieve.sieveSingle");
-        int bitLength = (5 << 27) - 1;
-        try {
-            Random random = RandomFactory.getRandom();
-            BigInteger actual = new BigInteger(bitLength, 0, random);
-            throw new RuntimeException("new BigInteger(bitLength, 0, null).bitLength()=" + actual.bitLength());
-        } catch (ArithmeticException e) {
-            // expected
-        }
-        try {
-            BigInteger bi = BigInteger.ONE.shiftLeft(bitLength - 1).subtract(BigInteger.ONE);
-            BigInteger actual = bi.nextProbablePrime();
-            throw new RuntimeException("bi.nextActualPrime().bitLength()=" + actual.bitLength());
-        } catch (ArithmeticException e) {
-            // expected
-        }
-    }
-
-    private static void testAdd() {
-        System.out.println("Testing BigInteger.add");
-        try {
-            BigInteger actual = MAX_VALUE.add(BigInteger.ONE);
-            throw new RuntimeException("BigInteger.MAX_VALUE.add(BigInteger.ONE).bitLength()=" + actual.bitLength());
-        } catch (ArithmeticException e) {
-            // expected
-        }
-    }
-
-    private static void testSubtract() {
-        System.out.println("Testing BigInteger.subtract");
-        try {
-            BigInteger actual = MIN_VALUE.subtract(BigInteger.ONE);
-            throw new RuntimeException("BigInteger.MIN_VALUE.subtract(BigInteger.ONE).bitLength()=" + actual.bitLength());
-        } catch (ArithmeticException e) {
-            // expected
-        }
-    }
-
-    private static void testMultiply() {
-        System.out.println("Testing BigInteger.multiply");
-        int py = 2000;
-        int px = Integer.MAX_VALUE - py;
-        BigInteger x = BigInteger.ONE.shiftLeft(px);
-        BigInteger y = BigInteger.ONE.shiftLeft(py);
-        try {
-            BigInteger actual = x.multiply(y);
-            throw new RuntimeException("(1 << " + px + " ) * (1 << " + py + ").bitLength()=" + actual.bitLength());
-        } catch (ArithmeticException e) {
-            // expected
-        }
-    }
-
-    private static void testDivide() {
-        System.out.println("Testing BigInteger.divide");
-        check("BigInteger.MIN_VALUE.divide(BigInteger.valueOf(-1))",
-                MIN_VALUE.divide(BigInteger.valueOf(-1)), MAX_VALUE);
-        check("BigInteger.MIN_VALUE.divide(BigInteger.ONE)",
-                MIN_VALUE.divide(BigInteger.ONE), MIN_VALUE);
-    }
-
-    private static void testDivideAndRemainder(String msg, BigInteger dividend, BigInteger divisor,
-            BigInteger expectedQuotent, BigInteger expectedRemainder) {
-        BigInteger[] qr = dividend.divideAndRemainder(divisor);
-        check(msg + "[0]", qr[0], expectedQuotent);
-        check(msg + "[1]", qr[1], expectedRemainder);
-    }
-
-    private static void testDivideAndRemainder() {
-        System.out.println("Testing BigInteger.divideAndRemainder");
-        testDivideAndRemainder("BigInteger.MIN_VALUE.divideAndRemainder(BigInteger.valueOf(-1))",
-                MIN_VALUE, BigInteger.valueOf(-1),
-                MAX_VALUE,
-                BigInteger.ZERO);
-    }
-
-    private static void testBug9005933() {
-        System.out.println("Testing Bug 9005933");
-        int dividendPow = 2147483646;
-        int divisorPow = 1568;
-        BigInteger dividend = BigInteger.ONE.shiftLeft(dividendPow);
-        BigInteger divisor = BigInteger.ONE.shiftLeft(divisorPow);
-        testDivideAndRemainder("(1 << " + dividendPow + ").divideAndRemainder(1 << " + divisorPow + ")",
-                dividend, divisor,
-                BigInteger.ONE.shiftLeft(dividendPow - divisorPow),
-                BigInteger.ZERO);
-    }
-
-    private static void testRemainder() {
-        System.out.println("Testing BigInteger.remainder");
-        check("BigInteger.MIN_VALUE.remainder(BigInteger.valueOf(-1))",
-                MIN_VALUE.remainder(BigInteger.valueOf(-1)), BigInteger.ZERO);
-    }
-
-    private static void testPow() {
-        System.out.println("Testing BigInteger.pow");
-        check("BigInteger.MIN_VALUE.pow(1)",
-                MIN_VALUE.pow(1), MIN_VALUE);
-        try {
-            BigInteger actual = BigInteger.valueOf(4).pow(Integer.MAX_VALUE);
-            throw new RuntimeException("BigInteger.valueOf(4).pow(Integer.MAX_VALUE).bitLength()=" + actual.bitLength());
-        } catch (ArithmeticException e) {
-            // expected
-        }
-    }
-
-    private static void testGcd() {
-        System.out.println("Testing BigInteger.gcd");
-        check("BigInteger.MIN_VALUE.gcd(BigInteger.MIN_VALUE)",
-                MIN_VALUE.gcd(MIN_VALUE), MAX_VALUE);
-        check("BigInteger.MIN_VALUE.gcd(BigInteger.ZERO)",
-                MIN_VALUE.gcd(BigInteger.ZERO), MAX_VALUE);
-        check("BigInteger.ZERO.gcd(MIN_VALUE)",
-                BigInteger.ZERO.gcd(MIN_VALUE), MAX_VALUE);
-    }
-
-    private static void testAbs() {
-        System.out.println("Testing BigInteger.abs");
-        check("BigInteger.MIN_VALUE.abs()",
-                MIN_VALUE.abs(), MAX_VALUE);
-        check("BigInteger.MAX_VALUE.abs()",
-                MAX_VALUE.abs(), MAX_VALUE);
-    }
-
-    private static void testNegate() {
-        System.out.println("Testing BigInteger.negate");
-        check("BigInteger.MIN_VALUE.negate()",
-                MIN_VALUE.negate(), MAX_VALUE);
-        check("BigInteger.MAX_VALUE.negate()",
-                MAX_VALUE.negate(), MIN_VALUE);
-    }
-
-    private static void testMod() {
-        System.out.println("Testing BigInteger.mod");
-        check("BigInteger.MIN_VALUE.mod(BigInteger.MAX_VALUE)",
-                MIN_VALUE.mod(MAX_VALUE), BigInteger.ZERO);
-        check("BigInteger.MAX_VALUE.mod(BigInteger.MAX_VALUE)",
-                MIN_VALUE.mod(MAX_VALUE), BigInteger.ZERO);
-    }
-
-    private static void testModPow() {
-        System.out.println("Testing BigInteger.modPow");
-        BigInteger x = BigInteger.valueOf(3);
-        BigInteger m = BigInteger.valueOf(-4).subtract(MIN_VALUE);
-        check("BigInteger.valueOf(3).modPow(BigInteger.ONE, m)",
-                x.modPow(BigInteger.ONE, m), x);
-    }
-
-    // slow test
-    private static void testModInverse() {
-        System.out.println("Testing BigInteger.modInverse");
-        check("BigInteger.MIN_VALUE.modInverse(BigInteger.MAX_VALUE)",
-                MIN_VALUE.modInverse(MAX_VALUE), MAX_VALUE.subtract(BigInteger.ONE));
-    }
-
-    private static void testShiftLeft() {
-        System.out.println("Testing BigInteger.shiftLeft");
-        try {
-            BigInteger actual = MIN_VALUE.shiftLeft(1);
-            throw new RuntimeException("BigInteger.MIN_VALUE.shiftLeft(1).bitLength()=" + actual.bitLength());
-        } catch (ArithmeticException e) {
-            // expected
-        }
-        try {
-            BigInteger actual = MAX_VALUE.shiftLeft(1);
-            throw new RuntimeException("BigInteger.MAX_VALUE.shiftLeft(1).bitLength()=" + actual.bitLength());
-        } catch (ArithmeticException e) {
-            // expected
-        }
-    }
-
-    private static void testShiftRight() {
-        System.out.println("Testing BigInteger.shiftRight");
-        try {
-            BigInteger actual = MIN_VALUE.shiftRight(-1);
-            throw new RuntimeException("BigInteger.MIN_VALUE.shiftRight(-1).bitLength()=" + actual.bitLength());
-        } catch (ArithmeticException e) {
-            // expected
-        }
-        try {
-            BigInteger actual = MAX_VALUE.shiftRight(-1);
-            throw new RuntimeException("BigInteger.MAX_VALUE.shiftRight(-1).bitLength()=" + actual.bitLength());
-        } catch (ArithmeticException e) {
-            // expected
-        }
-    }
-
-    private static void testAnd() {
-        System.out.println("Testing BigInteger.and");
-        check("BigInteger.MIN_VALUE.and(BigInteger.MIN_VALUE)",
-                MIN_VALUE.and(MIN_VALUE), MIN_VALUE);
-        check("BigInteger.MAX_VALUE.and(BigInteger.MAX_VALUE)",
-                MAX_VALUE.and(MAX_VALUE), MAX_VALUE);
-        check("BigInteger.MIN_VALUE.and(BigInteger.MAX_VALUE)",
-                MIN_VALUE.and(MAX_VALUE), BigInteger.ONE);
-        try {
-            BigInteger actual = MIN_VALUE.and(BigInteger.valueOf(-2));
-            throw new RuntimeException("BigInteger.MIN_VALUE.and(-2)).bitLength()=" + actual.bitLength());
-        } catch (ArithmeticException e) {
-            // expected
-        }
-    }
-
-    private static void testOr() {
-        System.out.println("Testing BigInteger.or");
-        check("BigInteger.MIN_VALUE.or(BigInteger.MIN_VALUE)",
-                MIN_VALUE.or(MIN_VALUE), MIN_VALUE);
-        check("BigInteger.MAX_VALUE.or(BigInteger.MAX_VALUE)",
-                MAX_VALUE.or(MAX_VALUE), MAX_VALUE);
-        check("BigInteger.MIN_VALUE.and(BigInteger.MAX_VALUE)",
-                MIN_VALUE.or(MAX_VALUE), BigInteger.valueOf(-1));
-    }
-
-    private static void testXor() {
-        System.out.println("Testing BigInteger.xor");
-        check("BigInteger.MIN_VALUE.xor(BigInteger.MIN_VALUE)",
-                MIN_VALUE.xor(MIN_VALUE), BigInteger.ZERO);
-        check("BigInteger.MAX_VALUE.xor(BigInteger.MAX_VALUE)",
-                MAX_VALUE.xor(MAX_VALUE), BigInteger.ZERO);
-        check("BigInteger.MIN_VALUE.xor(BigInteger.MAX_VALUE)",
-                MIN_VALUE.xor(MAX_VALUE), BigInteger.valueOf(-2));
-        try {
-            BigInteger actual = MIN_VALUE.xor(BigInteger.ONE);
-            throw new RuntimeException("BigInteger.MIN_VALUE.xor(BigInteger.ONE)).bitLength()=" + actual.bitLength());
-        } catch (ArithmeticException e) {
-            // expected
-        }
-    }
-
-    private static void testNot() {
-        System.out.println("Testing BigInteger.not");
-        check("BigInteger.MIN_VALUE.not()",
-                MIN_VALUE.not(), MAX_VALUE.subtract(BigInteger.ONE));
-        try {
-            BigInteger actual = MAX_VALUE.not();
-            throw new RuntimeException("BigInteger.MAX_VALUE.not()).bitLength()=" + actual.bitLength());
-        } catch (ArithmeticException e) {
-            // expected
-        }
-    }
-
-    private static void testSetBit() {
-        System.out.println("Testing BigInteger.setBit");
-        check("BigInteger.MIN_VALUE.setBit(" + Integer.MAX_VALUE + ")",
-                MIN_VALUE.setBit(Integer.MAX_VALUE), MIN_VALUE);
-        try {
-            BigInteger actual = MAX_VALUE.setBit(Integer.MAX_VALUE);
-            throw new RuntimeException("BigInteger.MAX_VALUE.setBit(" + Integer.MAX_VALUE + ").bitLength()=" + actual.bitLength());
-        } catch (ArithmeticException e) {
-            // expected
-        }
-    }
-
-    private static void testClearBit() {
-        System.out.println("Testing BigInteger.clearBit");
-        check("BigInteger.MAX_VALUE.clearBit(" + Integer.MAX_VALUE + ")",
-                MAX_VALUE.clearBit(Integer.MAX_VALUE), MAX_VALUE);
-        try {
-            BigInteger actual = MIN_VALUE.clearBit(Integer.MAX_VALUE);
-            throw new RuntimeException("BigInteger.MIN_VALUE.clearBit(" + Integer.MAX_VALUE + ").bitLength()=" + actual.bitLength());
-        } catch (ArithmeticException e) {
-            // expected
-        }
-        try {
-            BigInteger actual = MIN_VALUE.clearBit(0);
-            throw new RuntimeException("BigInteger.MIN_VALUE.clearBit(0).bitLength()=" + actual.bitLength());
-        } catch (ArithmeticException e) {
-            // expected
-        }
-    }
-
-    private static void testFlipBit() {
-        System.out.println("Testing BigInteger.flipBit");
-        try {
-            BigInteger actual = MIN_VALUE.flipBit(Integer.MAX_VALUE);
-            throw new RuntimeException("BigInteger.MIN_VALUE.flipBit(" + Integer.MAX_VALUE + ").bitLength()=" + actual.bitLength());
-        } catch (ArithmeticException e) {
-            // expected
-        }
-        try {
-            BigInteger actual = MIN_VALUE.flipBit(0);
-            throw new RuntimeException("BigInteger.MIN_VALUE.flipBit(0).bitLength()=" + actual.bitLength());
-        } catch (ArithmeticException e) {
-            // expected
-        }
-        try {
-            BigInteger actual = MAX_VALUE.flipBit(Integer.MAX_VALUE);
-            throw new RuntimeException("BigInteger.MAX_VALUE.flipBit(" + Integer.MAX_VALUE + ").bitLength()=" + actual.bitLength());
-        } catch (ArithmeticException e) {
-            // expected
-        }
-    }
-
-    private static void testGetLowestSetBit() {
-        System.out.println("Testing BigInteger.getLowestSetBit");
-        check("BigInteger.MIN_VALUE.getLowestSetBit()",
-                MIN_VALUE.getLowestSetBit(), 0);
-        check("BigInteger.MAX_VALUE.getLowestSetBit()",
-                MAX_VALUE.getLowestSetBit(), 0);
-    }
-
-    private static void testBitLength() {
-        System.out.println("Testing BigInteger.bitLength");
-        check("BigInteger.MIN_NEXT.bitLength()",
-                MIN_VALUE.bitLength(), Integer.MAX_VALUE);
-        check("BigInteger.MAX_VALUE.bitLength()",
-                MAX_VALUE.bitLength(), Integer.MAX_VALUE);
-    }
-
-    private static void testBitCount() {
-        System.out.println("Testing BigInteger.bitCount");
-        check("BigInteger.MIN_VALUE.bitCount()",
-                MIN_VALUE.bitCount(), Integer.MAX_VALUE - 1);
-        check("BigInteger.MAX_VALUE.bitCount()",
-                MAX_VALUE.bitCount(), Integer.MAX_VALUE);
-    }
-
-    private static void testToString(String msg, int radix, BigInteger bi, int length, String startsWith, char c) {
-        String s = bi.toString(radix);
-        if (s.length() != length) {
-            throw new RuntimeException(msg + ".length=" + s.length());
-        }
-        if (!s.startsWith(startsWith)) {
-            throw new RuntimeException(msg + "[0]=" + s.substring(0, startsWith.length()));
-        }
-        for (int i = startsWith.length(); i < s.length(); i++) {
-            if (s.charAt(i) != c) {
-                throw new RuntimeException(msg + "[" + i + "]='" + s.charAt(i) + "'");
-            }
-        }
-    }
-
-    private static void testToString() {
-        System.out.println("Testing BigInteger.toString");
-        testToString("BigInteger.MIN_VALUE.toString(16)=", 16,
-                BigInteger.valueOf(-1).shiftLeft(Integer.MAX_VALUE - 1),
-                (1 << 29) + 1, "-4", '0');
-    }
-
-    private static void testToByteArrayWithConstructor(String msg, BigInteger bi, int length, byte msb, byte b, byte lsb) {
-        byte[] ba = bi.toByteArray();
-        if (ba.length != length) {
-            throw new RuntimeException(msg + ".length=" + ba.length);
-        }
-        if (ba[0] != msb) {
-            throw new RuntimeException(msg + "[0]=" + ba[0]);
-        }
-        for (int i = 1; i < ba.length - 1; i++) {
-            if (ba[i] != b) {
-                throw new RuntimeException(msg + "[" + i + "]=" + ba[i]);
-            }
-        }
-        if (ba[ba.length - 1] != lsb) {
-            throw new RuntimeException(msg + "[" + (ba.length - 1) + "]=" + ba[ba.length - 1]);
-        }
-        BigInteger actual = new BigInteger(ba);
-        if (!actual.equals(bi)) {
-            throw new RuntimeException(msg + ".bitLength()=" + actual.bitLength());
-        }
-    }
-
-    private static void testToByteArrayWithConstructor() {
-        System.out.println("Testing BigInteger.toByteArray with constructor");
-        testToByteArrayWithConstructor("BigInteger.MIN_VALUE.toByteArray()",
-                MIN_VALUE, (1 << 28), (byte) 0x80, (byte) 0x00, (byte) 0x01);
-        testToByteArrayWithConstructor("BigInteger.MAX_VALUE.toByteArray()",
-                MAX_VALUE, (1 << 28), (byte) 0x7f, (byte) 0xff, (byte) 0xff);
-
-        byte[] ba = new byte[1 << 28];
-        ba[0] = (byte) 0x80;
-        try {
-            BigInteger actual = new BigInteger(-1, ba);
-            throw new RuntimeException("new BigInteger(-1, ba).bitLength()=" + actual.bitLength());
-        } catch (ArithmeticException e) {
-            // expected
-        }
-        try {
-            BigInteger actual = new BigInteger(1, ba);
-            throw new RuntimeException("new BigInteger(1, ba).bitLength()=" + actual.bitLength());
-        } catch (ArithmeticException e) {
-            // expected
-        }
-    }
-
-    private static void testIntValue() {
-        System.out.println("Testing BigInteger.intValue");
-        check("BigInteger.MIN_VALUE.intValue()",
-                MIN_VALUE.intValue(), 1);
-        check("BigInteger.MAX_VALUE.floatValue()",
-                MAX_VALUE.intValue(), -1);
-    }
-
-    private static void testLongValue() {
-        System.out.println("Testing BigInteger.longValue");
-        check("BigInteger.MIN_VALUE.longValue()",
-                MIN_VALUE.longValue(), 1L);
-        check("BigInteger.MAX_VALUE.longValue()",
-                MAX_VALUE.longValue(), -1L);
-    }
-
-    private static void testFloatValue() {
-        System.out.println("Testing BigInteger.floatValue, Bug 8021203");
-        check("BigInteger.MIN_VALUE_.floatValue()",
-                MIN_VALUE.floatValue(), Float.NEGATIVE_INFINITY);
-        check("BigInteger.MAX_VALUE.floatValue()",
-                MAX_VALUE.floatValue(), Float.POSITIVE_INFINITY);
-    }
-
-    private static void testDoubleValue() {
-        System.out.println("Testing BigInteger.doubleValue, Bug 8021203");
-        check("BigInteger.MIN_VALUE.doubleValue()",
-                MIN_VALUE.doubleValue(), Double.NEGATIVE_INFINITY);
-        check("BigInteger.MAX_VALUE.doubleValue()",
-                MAX_VALUE.doubleValue(), Double.POSITIVE_INFINITY);
-    }
-
-    private static void testSerialization(String msg, BigInteger bi) {
-        try {
-            ByteArrayOutputStream baOut = new ByteArrayOutputStream((1 << 28) + 1000);
-            ObjectOutputStream out = new ObjectOutputStream(baOut);
-            out.writeObject(bi);
-            out.close();
-            out = null;
-            byte[] ba = baOut.toByteArray();
-            baOut = null;
-            ObjectInputStream in = new ObjectInputStream(new ByteArrayInputStream(ba));
-            BigInteger actual = (BigInteger) in.readObject();
-            if (!actual.equals(bi)) {
-                throw new RuntimeException(msg + ".bitLength()=" + actual.bitLength());
-            }
-        } catch (IOException | ClassNotFoundException e) {
-            throw new RuntimeException(msg + " raised exception ", e);
-        }
-    }
-
-    private static void testSerialization() {
-        System.out.println("Testing BigInteger serialization");
-        testSerialization("BigInteger.MIN_VALUE.intValue()",
-                MIN_VALUE);
-        testSerialization("BigInteger.MAX_VALUE.floatValue()",
-                MAX_VALUE);
-    }
-
-    private static void testLongValueExact() {
-        System.out.println("Testing BigInteger.longValueExact");
-        try {
-            long actual = MIN_VALUE.longValueExact();
-            throw new RuntimeException("BigInteger.MIN_VALUE.longValueExact()= " + actual);
-        } catch (ArithmeticException e) {
-            // excpected
-        }
-        try {
-            long actual = MAX_VALUE.longValueExact();
-            throw new RuntimeException("BigInteger.MAX_VALUE.longValueExact()= " + actual);
-        } catch (ArithmeticException e) {
-            // excpected
-        }
-    }
-
-    private static void testIntValueExact() {
-        System.out.println("Testing BigInteger.intValueExact");
-        try {
-            long actual = MIN_VALUE.intValueExact();
-            throw new RuntimeException("BigInteger.MIN_VALUE.intValueExact()= " + actual);
-        } catch (ArithmeticException e) {
-            // excpected
-        }
-        try {
-            long actual = MAX_VALUE.intValueExact();
-            throw new RuntimeException("BigInteger.MAX_VALUE.intValueExact()= " + actual);
-        } catch (ArithmeticException e) {
-            // excpected
-        }
-    }
-
-    private static void testShortValueExact() {
-        System.out.println("Testing BigInteger.shortValueExact");
-        try {
-            long actual = MIN_VALUE.shortValueExact();
-            throw new RuntimeException("BigInteger.MIN_VALUE.shortValueExact()= " + actual);
-        } catch (ArithmeticException e) {
-            // excpected
-        }
-        try {
-            long actual = MAX_VALUE.shortValueExact();
-            throw new RuntimeException("BigInteger.MAX_VALUE.shortValueExact()= " + actual);
-        } catch (ArithmeticException e) {
-            // excpected
-        }
-    }
-
-    private static void testByteValueExact() {
-        System.out.println("Testing BigInteger.byteValueExact");
-        try {
-            long actual = MIN_VALUE.byteValueExact();
-            throw new RuntimeException("BigInteger.MIN_VALUE.byteValueExact()= " + actual);
-        } catch (ArithmeticException e) {
-            // excpected
-        }
-        try {
-            long actual = MAX_VALUE.byteValueExact();
-            throw new RuntimeException("BigInteger.MAX_VALUE.byteValueExact()= " + actual);
-        } catch (ArithmeticException e) {
-            // excpected
-        }
-    }
-
-    public static void main(String... args) {
-        testOverflowInMakePositive();
-        testBug8021204();
-        testOverflowInBitSieve();
-        testAdd();
-        testSubtract();
-        testMultiply();
-        testDivide();
-        testDivideAndRemainder();
-        testBug9005933();
-        testRemainder();
-        testPow();
-        testGcd();
-        testAbs();
-        testNegate();
-        testMod();
-        testModPow();
-//        testModInverse();
-        testShiftLeft();
-        testShiftRight();
-        testAnd();
-        testOr();
-        testXor();
-        testNot();
-        testSetBit();
-        testClearBit();
-        testFlipBit();
-        testGetLowestSetBit();
-        testBitLength();
-        testBitCount();
-        testToString();
-        testToByteArrayWithConstructor();
-        testIntValue();
-        testLongValue();
-        testFloatValue();
-        testDoubleValue();
-        testSerialization();
-        testLongValueExact();
-        testIntValueExact();
-        testShortValueExact();
-        testByteValueExact();
-    }
-}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/jdk/java/math/BigInteger/largeMemory/DivisionOverflow.java	Wed Oct 23 14:01:17 2019 -0400
@@ -0,0 +1,56 @@
+/*
+ * Copyright (c) 2011, 2019, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * @test
+ * @bug 8022780
+ * @summary Test division of large values
+ * @requires os.maxMemory > 8g
+ * @run main/othervm -Xshare:off -Xmx8g DivisionOverflow
+ * @author Dmitry Nadezhin
+ */
+import java.math.BigInteger;
+
+public class DivisionOverflow {
+
+    public static void main(String[] args) {
+        try {
+            BigInteger a = BigInteger.ONE.shiftLeft(2147483646);
+            BigInteger b = BigInteger.ONE.shiftLeft(1568);
+            BigInteger[] qr = a.divideAndRemainder(b);
+            BigInteger q = qr[0];
+            BigInteger r = qr[1];
+            if (!r.equals(BigInteger.ZERO)) {
+                throw new RuntimeException("Incorrect signum() of remainder " + r.signum());
+            }
+            if (q.bitLength() != 2147482079) {
+                throw new RuntimeException("Incorrect bitLength() of quotient " + q.bitLength());
+            }
+            System.out.println("Division of large values passed without overflow.");
+        } catch (OutOfMemoryError e) {
+            // possible
+            System.err.println("DivisionOverflow skipped: OutOfMemoryError");
+            System.err.println("Run jtreg with -javaoption:-Xmx8g");
+        }
+    }
+}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/jdk/java/math/BigInteger/largeMemory/StringConstructorOverflow.java	Wed Oct 23 14:01:17 2019 -0400
@@ -0,0 +1,62 @@
+/*
+ * Copyright (c) 2013, 2019, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * @test
+ * @bug 8021204
+ * @summary Test constructor BigInteger(String val, int radix) on very long string
+ * @requires os.maxMemory > 8g
+ * @run main/othervm -Xshare:off -Xmx8g StringConstructorOverflow
+ * @author Dmitry Nadezhin
+ */
+import java.math.BigInteger;
+
+public class StringConstructorOverflow {
+
+    // String with hexadecimal value pow(2,pow(2,34))+1
+    private static String makeLongHexString() {
+        StringBuilder sb = new StringBuilder();
+        sb.append('1');
+        for (int i = 0; i < (1 << 30) - 1; i++) {
+            sb.append('0');
+        }
+        sb.append('1');
+        return sb.toString();
+    }
+
+    public static void main(String[] args) {
+        try {
+            BigInteger bi = new BigInteger(makeLongHexString(), 16);
+            if (bi.compareTo(BigInteger.ONE) <= 0) {
+                throw new RuntimeException("Incorrect result " + bi.toString());
+            }
+        } catch (ArithmeticException e) {
+            // expected
+            System.out.println("Overflow is reported by ArithmeticException, as expected");
+        } catch (OutOfMemoryError e) {
+            // possible
+            System.err.println("StringConstructorOverflow skipped: OutOfMemoryError");
+            System.err.println("Run jtreg with -javaoption:-Xmx8g");
+        }
+    }
+}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/jdk/java/math/BigInteger/largeMemory/SymmetricRangeTests.java	Wed Oct 23 14:01:17 2019 -0400
@@ -0,0 +1,665 @@
+/*
+ * Copyright (c) 2013, 2019, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * @test
+ * @bug 6910473 8021204 8021203 9005933 8074460 8078672
+ * @summary Test range of BigInteger values (use -Dseed=X to set PRNG seed)
+ * @library /test/lib
+ * @requires os.maxMemory > 8g
+ * @run main/timeout=180/othervm -Xmx8g SymmetricRangeTests
+ * @author Dmitry Nadezhin
+ * @key randomness
+ */
+import java.io.ByteArrayInputStream;
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.io.ObjectInputStream;
+import java.io.ObjectOutputStream;
+import java.util.Arrays;
+import java.math.BigInteger;
+import java.util.Random;
+import jdk.test.lib.RandomFactory;
+
+public class SymmetricRangeTests {
+
+    private static final BigInteger MAX_VALUE = makeMaxValue();
+    private static final BigInteger MIN_VALUE = MAX_VALUE.negate();
+
+    private static BigInteger makeMaxValue() {
+        byte[] ba = new byte[1 << 28];
+        Arrays.fill(ba, (byte) 0xFF);
+        ba[0] = (byte) 0x7F;
+        return new BigInteger(ba);
+    }
+
+    private static void check(String msg, BigInteger actual, BigInteger expected) {
+        if (!actual.equals(expected)) {
+            throw new RuntimeException(msg + ".bitLength()=" + actual.bitLength());
+        }
+    }
+
+    private static void check(String msg, double actual, double expected) {
+        if (actual != expected) {
+            throw new RuntimeException(msg + "=" + actual);
+        }
+    }
+
+    private static void check(String msg, float actual, float expected) {
+        if (actual != expected) {
+            throw new RuntimeException(msg + "=" + actual);
+        }
+    }
+
+    private static void check(String msg, long actual, long expected) {
+        if (actual != expected) {
+            throw new RuntimeException(msg + "=" + actual);
+        }
+    }
+
+    private static void check(String msg, int actual, int expected) {
+        if (actual != expected) {
+            throw new RuntimeException(msg + "=" + actual);
+        }
+    }
+
+    private static void testOverflowInMakePositive() {
+        System.out.println("Testing overflow in BigInteger.makePositive");
+        byte[] ba = new byte[Integer.MAX_VALUE - 2];
+        ba[0] = (byte) 0x80;
+        try {
+            BigInteger actual = new BigInteger(ba);
+            throw new RuntimeException("new BigInteger(ba).bitLength()=" + actual.bitLength());
+        } catch (ArithmeticException e) {
+            // expected
+        }
+    }
+
+    private static void testBug8021204() {
+        System.out.println("Testing Bug 8021204");
+        StringBuilder sb = new StringBuilder();
+        sb.append('1');
+        for (int i = 0; i < (1 << 30) - 1; i++) {
+            sb.append('0');
+        }
+        sb.append('1');
+        String s = sb.toString();
+        sb = null;
+        try {
+            BigInteger actual = new BigInteger(s, 16);
+            throw new RuntimeException("new BigInteger(\"1000...001\").bitLength()=" + actual.bitLength());
+        } catch (ArithmeticException e) {
+            // expected
+        }
+    }
+
+    private static void testOverflowInBitSieve() {
+        System.out.println("Testing overflow in BitSieve.sieveSingle");
+        int bitLength = (5 << 27) - 1;
+        try {
+            Random random = RandomFactory.getRandom();
+            BigInteger actual = new BigInteger(bitLength, 0, random);
+            throw new RuntimeException("new BigInteger(bitLength, 0, null).bitLength()=" + actual.bitLength());
+        } catch (ArithmeticException e) {
+            // expected
+        }
+        try {
+            BigInteger bi = BigInteger.ONE.shiftLeft(bitLength - 1).subtract(BigInteger.ONE);
+            BigInteger actual = bi.nextProbablePrime();
+            throw new RuntimeException("bi.nextActualPrime().bitLength()=" + actual.bitLength());
+        } catch (ArithmeticException e) {
+            // expected
+        }
+    }
+
+    private static void testAdd() {
+        System.out.println("Testing BigInteger.add");
+        try {
+            BigInteger actual = MAX_VALUE.add(BigInteger.ONE);
+            throw new RuntimeException("BigInteger.MAX_VALUE.add(BigInteger.ONE).bitLength()=" + actual.bitLength());
+        } catch (ArithmeticException e) {
+            // expected
+        }
+    }
+
+    private static void testSubtract() {
+        System.out.println("Testing BigInteger.subtract");
+        try {
+            BigInteger actual = MIN_VALUE.subtract(BigInteger.ONE);
+            throw new RuntimeException("BigInteger.MIN_VALUE.subtract(BigInteger.ONE).bitLength()=" + actual.bitLength());
+        } catch (ArithmeticException e) {
+            // expected
+        }
+    }
+
+    private static void testMultiply() {
+        System.out.println("Testing BigInteger.multiply");
+        int py = 2000;
+        int px = Integer.MAX_VALUE - py;
+        BigInteger x = BigInteger.ONE.shiftLeft(px);
+        BigInteger y = BigInteger.ONE.shiftLeft(py);
+        try {
+            BigInteger actual = x.multiply(y);
+            throw new RuntimeException("(1 << " + px + " ) * (1 << " + py + ").bitLength()=" + actual.bitLength());
+        } catch (ArithmeticException e) {
+            // expected
+        }
+    }
+
+    private static void testDivide() {
+        System.out.println("Testing BigInteger.divide");
+        check("BigInteger.MIN_VALUE.divide(BigInteger.valueOf(-1))",
+                MIN_VALUE.divide(BigInteger.valueOf(-1)), MAX_VALUE);
+        check("BigInteger.MIN_VALUE.divide(BigInteger.ONE)",
+                MIN_VALUE.divide(BigInteger.ONE), MIN_VALUE);
+    }
+
+    private static void testDivideAndRemainder(String msg, BigInteger dividend, BigInteger divisor,
+            BigInteger expectedQuotent, BigInteger expectedRemainder) {
+        BigInteger[] qr = dividend.divideAndRemainder(divisor);
+        check(msg + "[0]", qr[0], expectedQuotent);
+        check(msg + "[1]", qr[1], expectedRemainder);
+    }
+
+    private static void testDivideAndRemainder() {
+        System.out.println("Testing BigInteger.divideAndRemainder");
+        testDivideAndRemainder("BigInteger.MIN_VALUE.divideAndRemainder(BigInteger.valueOf(-1))",
+                MIN_VALUE, BigInteger.valueOf(-1),
+                MAX_VALUE,
+                BigInteger.ZERO);
+    }
+
+    private static void testBug9005933() {
+        System.out.println("Testing Bug 9005933");
+        int dividendPow = 2147483646;
+        int divisorPow = 1568;
+        BigInteger dividend = BigInteger.ONE.shiftLeft(dividendPow);
+        BigInteger divisor = BigInteger.ONE.shiftLeft(divisorPow);
+        testDivideAndRemainder("(1 << " + dividendPow + ").divideAndRemainder(1 << " + divisorPow + ")",
+                dividend, divisor,
+                BigInteger.ONE.shiftLeft(dividendPow - divisorPow),
+                BigInteger.ZERO);
+    }
+
+    private static void testRemainder() {
+        System.out.println("Testing BigInteger.remainder");
+        check("BigInteger.MIN_VALUE.remainder(BigInteger.valueOf(-1))",
+                MIN_VALUE.remainder(BigInteger.valueOf(-1)), BigInteger.ZERO);
+    }
+
+    private static void testPow() {
+        System.out.println("Testing BigInteger.pow");
+        check("BigInteger.MIN_VALUE.pow(1)",
+                MIN_VALUE.pow(1), MIN_VALUE);
+        try {
+            BigInteger actual = BigInteger.valueOf(4).pow(Integer.MAX_VALUE);
+            throw new RuntimeException("BigInteger.valueOf(4).pow(Integer.MAX_VALUE).bitLength()=" + actual.bitLength());
+        } catch (ArithmeticException e) {
+            // expected
+        }
+    }
+
+    private static void testGcd() {
+        System.out.println("Testing BigInteger.gcd");
+        check("BigInteger.MIN_VALUE.gcd(BigInteger.MIN_VALUE)",
+                MIN_VALUE.gcd(MIN_VALUE), MAX_VALUE);
+        check("BigInteger.MIN_VALUE.gcd(BigInteger.ZERO)",
+                MIN_VALUE.gcd(BigInteger.ZERO), MAX_VALUE);
+        check("BigInteger.ZERO.gcd(MIN_VALUE)",
+                BigInteger.ZERO.gcd(MIN_VALUE), MAX_VALUE);
+    }
+
+    private static void testAbs() {
+        System.out.println("Testing BigInteger.abs");
+        check("BigInteger.MIN_VALUE.abs()",
+                MIN_VALUE.abs(), MAX_VALUE);
+        check("BigInteger.MAX_VALUE.abs()",
+                MAX_VALUE.abs(), MAX_VALUE);
+    }
+
+    private static void testNegate() {
+        System.out.println("Testing BigInteger.negate");
+        check("BigInteger.MIN_VALUE.negate()",
+                MIN_VALUE.negate(), MAX_VALUE);
+        check("BigInteger.MAX_VALUE.negate()",
+                MAX_VALUE.negate(), MIN_VALUE);
+    }
+
+    private static void testMod() {
+        System.out.println("Testing BigInteger.mod");
+        check("BigInteger.MIN_VALUE.mod(BigInteger.MAX_VALUE)",
+                MIN_VALUE.mod(MAX_VALUE), BigInteger.ZERO);
+        check("BigInteger.MAX_VALUE.mod(BigInteger.MAX_VALUE)",
+                MIN_VALUE.mod(MAX_VALUE), BigInteger.ZERO);
+    }
+
+    private static void testModPow() {
+        System.out.println("Testing BigInteger.modPow");
+        BigInteger x = BigInteger.valueOf(3);
+        BigInteger m = BigInteger.valueOf(-4).subtract(MIN_VALUE);
+        check("BigInteger.valueOf(3).modPow(BigInteger.ONE, m)",
+                x.modPow(BigInteger.ONE, m), x);
+    }
+
+    // slow test
+    private static void testModInverse() {
+        System.out.println("Testing BigInteger.modInverse");
+        check("BigInteger.MIN_VALUE.modInverse(BigInteger.MAX_VALUE)",
+                MIN_VALUE.modInverse(MAX_VALUE), MAX_VALUE.subtract(BigInteger.ONE));
+    }
+
+    private static void testShiftLeft() {
+        System.out.println("Testing BigInteger.shiftLeft");
+        try {
+            BigInteger actual = MIN_VALUE.shiftLeft(1);
+            throw new RuntimeException("BigInteger.MIN_VALUE.shiftLeft(1).bitLength()=" + actual.bitLength());
+        } catch (ArithmeticException e) {
+            // expected
+        }
+        try {
+            BigInteger actual = MAX_VALUE.shiftLeft(1);
+            throw new RuntimeException("BigInteger.MAX_VALUE.shiftLeft(1).bitLength()=" + actual.bitLength());
+        } catch (ArithmeticException e) {
+            // expected
+        }
+    }
+
+    private static void testShiftRight() {
+        System.out.println("Testing BigInteger.shiftRight");
+        try {
+            BigInteger actual = MIN_VALUE.shiftRight(-1);
+            throw new RuntimeException("BigInteger.MIN_VALUE.shiftRight(-1).bitLength()=" + actual.bitLength());
+        } catch (ArithmeticException e) {
+            // expected
+        }
+        try {
+            BigInteger actual = MAX_VALUE.shiftRight(-1);
+            throw new RuntimeException("BigInteger.MAX_VALUE.shiftRight(-1).bitLength()=" + actual.bitLength());
+        } catch (ArithmeticException e) {
+            // expected
+        }
+    }
+
+    private static void testAnd() {
+        System.out.println("Testing BigInteger.and");
+        check("BigInteger.MIN_VALUE.and(BigInteger.MIN_VALUE)",
+                MIN_VALUE.and(MIN_VALUE), MIN_VALUE);
+        check("BigInteger.MAX_VALUE.and(BigInteger.MAX_VALUE)",
+                MAX_VALUE.and(MAX_VALUE), MAX_VALUE);
+        check("BigInteger.MIN_VALUE.and(BigInteger.MAX_VALUE)",
+                MIN_VALUE.and(MAX_VALUE), BigInteger.ONE);
+        try {
+            BigInteger actual = MIN_VALUE.and(BigInteger.valueOf(-2));
+            throw new RuntimeException("BigInteger.MIN_VALUE.and(-2)).bitLength()=" + actual.bitLength());
+        } catch (ArithmeticException e) {
+            // expected
+        }
+    }
+
+    private static void testOr() {
+        System.out.println("Testing BigInteger.or");
+        check("BigInteger.MIN_VALUE.or(BigInteger.MIN_VALUE)",
+                MIN_VALUE.or(MIN_VALUE), MIN_VALUE);
+        check("BigInteger.MAX_VALUE.or(BigInteger.MAX_VALUE)",
+                MAX_VALUE.or(MAX_VALUE), MAX_VALUE);
+        check("BigInteger.MIN_VALUE.and(BigInteger.MAX_VALUE)",
+                MIN_VALUE.or(MAX_VALUE), BigInteger.valueOf(-1));
+    }
+
+    private static void testXor() {
+        System.out.println("Testing BigInteger.xor");
+        check("BigInteger.MIN_VALUE.xor(BigInteger.MIN_VALUE)",
+                MIN_VALUE.xor(MIN_VALUE), BigInteger.ZERO);
+        check("BigInteger.MAX_VALUE.xor(BigInteger.MAX_VALUE)",
+                MAX_VALUE.xor(MAX_VALUE), BigInteger.ZERO);
+        check("BigInteger.MIN_VALUE.xor(BigInteger.MAX_VALUE)",
+                MIN_VALUE.xor(MAX_VALUE), BigInteger.valueOf(-2));
+        try {
+            BigInteger actual = MIN_VALUE.xor(BigInteger.ONE);
+            throw new RuntimeException("BigInteger.MIN_VALUE.xor(BigInteger.ONE)).bitLength()=" + actual.bitLength());
+        } catch (ArithmeticException e) {
+            // expected
+        }
+    }
+
+    private static void testNot() {
+        System.out.println("Testing BigInteger.not");
+        check("BigInteger.MIN_VALUE.not()",
+                MIN_VALUE.not(), MAX_VALUE.subtract(BigInteger.ONE));
+        try {
+            BigInteger actual = MAX_VALUE.not();
+            throw new RuntimeException("BigInteger.MAX_VALUE.not()).bitLength()=" + actual.bitLength());
+        } catch (ArithmeticException e) {
+            // expected
+        }
+    }
+
+    private static void testSetBit() {
+        System.out.println("Testing BigInteger.setBit");
+        check("BigInteger.MIN_VALUE.setBit(" + Integer.MAX_VALUE + ")",
+                MIN_VALUE.setBit(Integer.MAX_VALUE), MIN_VALUE);
+        try {
+            BigInteger actual = MAX_VALUE.setBit(Integer.MAX_VALUE);
+            throw new RuntimeException("BigInteger.MAX_VALUE.setBit(" + Integer.MAX_VALUE + ").bitLength()=" + actual.bitLength());
+        } catch (ArithmeticException e) {
+            // expected
+        }
+    }
+
+    private static void testClearBit() {
+        System.out.println("Testing BigInteger.clearBit");
+        check("BigInteger.MAX_VALUE.clearBit(" + Integer.MAX_VALUE + ")",
+                MAX_VALUE.clearBit(Integer.MAX_VALUE), MAX_VALUE);
+        try {
+            BigInteger actual = MIN_VALUE.clearBit(Integer.MAX_VALUE);
+            throw new RuntimeException("BigInteger.MIN_VALUE.clearBit(" + Integer.MAX_VALUE + ").bitLength()=" + actual.bitLength());
+        } catch (ArithmeticException e) {
+            // expected
+        }
+        try {
+            BigInteger actual = MIN_VALUE.clearBit(0);
+            throw new RuntimeException("BigInteger.MIN_VALUE.clearBit(0).bitLength()=" + actual.bitLength());
+        } catch (ArithmeticException e) {
+            // expected
+        }
+    }
+
+    private static void testFlipBit() {
+        System.out.println("Testing BigInteger.flipBit");
+        try {
+            BigInteger actual = MIN_VALUE.flipBit(Integer.MAX_VALUE);
+            throw new RuntimeException("BigInteger.MIN_VALUE.flipBit(" + Integer.MAX_VALUE + ").bitLength()=" + actual.bitLength());
+        } catch (ArithmeticException e) {
+            // expected
+        }
+        try {
+            BigInteger actual = MIN_VALUE.flipBit(0);
+            throw new RuntimeException("BigInteger.MIN_VALUE.flipBit(0).bitLength()=" + actual.bitLength());
+        } catch (ArithmeticException e) {
+            // expected
+        }
+        try {
+            BigInteger actual = MAX_VALUE.flipBit(Integer.MAX_VALUE);
+            throw new RuntimeException("BigInteger.MAX_VALUE.flipBit(" + Integer.MAX_VALUE + ").bitLength()=" + actual.bitLength());
+        } catch (ArithmeticException e) {
+            // expected
+        }
+    }
+
+    private static void testGetLowestSetBit() {
+        System.out.println("Testing BigInteger.getLowestSetBit");
+        check("BigInteger.MIN_VALUE.getLowestSetBit()",
+                MIN_VALUE.getLowestSetBit(), 0);
+        check("BigInteger.MAX_VALUE.getLowestSetBit()",
+                MAX_VALUE.getLowestSetBit(), 0);
+    }
+
+    private static void testBitLength() {
+        System.out.println("Testing BigInteger.bitLength");
+        check("BigInteger.MIN_NEXT.bitLength()",
+                MIN_VALUE.bitLength(), Integer.MAX_VALUE);
+        check("BigInteger.MAX_VALUE.bitLength()",
+                MAX_VALUE.bitLength(), Integer.MAX_VALUE);
+    }
+
+    private static void testBitCount() {
+        System.out.println("Testing BigInteger.bitCount");
+        check("BigInteger.MIN_VALUE.bitCount()",
+                MIN_VALUE.bitCount(), Integer.MAX_VALUE - 1);
+        check("BigInteger.MAX_VALUE.bitCount()",
+                MAX_VALUE.bitCount(), Integer.MAX_VALUE);
+    }
+
+    private static void testToString(String msg, int radix, BigInteger bi, int length, String startsWith, char c) {
+        String s = bi.toString(radix);
+        if (s.length() != length) {
+            throw new RuntimeException(msg + ".length=" + s.length());
+        }
+        if (!s.startsWith(startsWith)) {
+            throw new RuntimeException(msg + "[0]=" + s.substring(0, startsWith.length()));
+        }
+        for (int i = startsWith.length(); i < s.length(); i++) {
+            if (s.charAt(i) != c) {
+                throw new RuntimeException(msg + "[" + i + "]='" + s.charAt(i) + "'");
+            }
+        }
+    }
+
+    private static void testToString() {
+        System.out.println("Testing BigInteger.toString");
+        testToString("BigInteger.MIN_VALUE.toString(16)=", 16,
+                BigInteger.valueOf(-1).shiftLeft(Integer.MAX_VALUE - 1),
+                (1 << 29) + 1, "-4", '0');
+    }
+
+    private static void testToByteArrayWithConstructor(String msg, BigInteger bi, int length, byte msb, byte b, byte lsb) {
+        byte[] ba = bi.toByteArray();
+        if (ba.length != length) {
+            throw new RuntimeException(msg + ".length=" + ba.length);
+        }
+        if (ba[0] != msb) {
+            throw new RuntimeException(msg + "[0]=" + ba[0]);
+        }
+        for (int i = 1; i < ba.length - 1; i++) {
+            if (ba[i] != b) {
+                throw new RuntimeException(msg + "[" + i + "]=" + ba[i]);
+            }
+        }
+        if (ba[ba.length - 1] != lsb) {
+            throw new RuntimeException(msg + "[" + (ba.length - 1) + "]=" + ba[ba.length - 1]);
+        }
+        BigInteger actual = new BigInteger(ba);
+        if (!actual.equals(bi)) {
+            throw new RuntimeException(msg + ".bitLength()=" + actual.bitLength());
+        }
+    }
+
+    private static void testToByteArrayWithConstructor() {
+        System.out.println("Testing BigInteger.toByteArray with constructor");
+        testToByteArrayWithConstructor("BigInteger.MIN_VALUE.toByteArray()",
+                MIN_VALUE, (1 << 28), (byte) 0x80, (byte) 0x00, (byte) 0x01);
+        testToByteArrayWithConstructor("BigInteger.MAX_VALUE.toByteArray()",
+                MAX_VALUE, (1 << 28), (byte) 0x7f, (byte) 0xff, (byte) 0xff);
+
+        byte[] ba = new byte[1 << 28];
+        ba[0] = (byte) 0x80;
+        try {
+            BigInteger actual = new BigInteger(-1, ba);
+            throw new RuntimeException("new BigInteger(-1, ba).bitLength()=" + actual.bitLength());
+        } catch (ArithmeticException e) {
+            // expected
+        }
+        try {
+            BigInteger actual = new BigInteger(1, ba);
+            throw new RuntimeException("new BigInteger(1, ba).bitLength()=" + actual.bitLength());
+        } catch (ArithmeticException e) {
+            // expected
+        }
+    }
+
+    private static void testIntValue() {
+        System.out.println("Testing BigInteger.intValue");
+        check("BigInteger.MIN_VALUE.intValue()",
+                MIN_VALUE.intValue(), 1);
+        check("BigInteger.MAX_VALUE.floatValue()",
+                MAX_VALUE.intValue(), -1);
+    }
+
+    private static void testLongValue() {
+        System.out.println("Testing BigInteger.longValue");
+        check("BigInteger.MIN_VALUE.longValue()",
+                MIN_VALUE.longValue(), 1L);
+        check("BigInteger.MAX_VALUE.longValue()",
+                MAX_VALUE.longValue(), -1L);
+    }
+
+    private static void testFloatValue() {
+        System.out.println("Testing BigInteger.floatValue, Bug 8021203");
+        check("BigInteger.MIN_VALUE_.floatValue()",
+                MIN_VALUE.floatValue(), Float.NEGATIVE_INFINITY);
+        check("BigInteger.MAX_VALUE.floatValue()",
+                MAX_VALUE.floatValue(), Float.POSITIVE_INFINITY);
+    }
+
+    private static void testDoubleValue() {
+        System.out.println("Testing BigInteger.doubleValue, Bug 8021203");
+        check("BigInteger.MIN_VALUE.doubleValue()",
+                MIN_VALUE.doubleValue(), Double.NEGATIVE_INFINITY);
+        check("BigInteger.MAX_VALUE.doubleValue()",
+                MAX_VALUE.doubleValue(), Double.POSITIVE_INFINITY);
+    }
+
+    private static void testSerialization(String msg, BigInteger bi) {
+        try {
+            ByteArrayOutputStream baOut = new ByteArrayOutputStream((1 << 28) + 1000);
+            ObjectOutputStream out = new ObjectOutputStream(baOut);
+            out.writeObject(bi);
+            out.close();
+            out = null;
+            byte[] ba = baOut.toByteArray();
+            baOut = null;
+            ObjectInputStream in = new ObjectInputStream(new ByteArrayInputStream(ba));
+            BigInteger actual = (BigInteger) in.readObject();
+            if (!actual.equals(bi)) {
+                throw new RuntimeException(msg + ".bitLength()=" + actual.bitLength());
+            }
+        } catch (IOException | ClassNotFoundException e) {
+            throw new RuntimeException(msg + " raised exception ", e);
+        }
+    }
+
+    private static void testSerialization() {
+        System.out.println("Testing BigInteger serialization");
+        testSerialization("BigInteger.MIN_VALUE.intValue()",
+                MIN_VALUE);
+        testSerialization("BigInteger.MAX_VALUE.floatValue()",
+                MAX_VALUE);
+    }
+
+    private static void testLongValueExact() {
+        System.out.println("Testing BigInteger.longValueExact");
+        try {
+            long actual = MIN_VALUE.longValueExact();
+            throw new RuntimeException("BigInteger.MIN_VALUE.longValueExact()= " + actual);
+        } catch (ArithmeticException e) {
+            // excpected
+        }
+        try {
+            long actual = MAX_VALUE.longValueExact();
+            throw new RuntimeException("BigInteger.MAX_VALUE.longValueExact()= " + actual);
+        } catch (ArithmeticException e) {
+            // excpected
+        }
+    }
+
+    private static void testIntValueExact() {
+        System.out.println("Testing BigInteger.intValueExact");
+        try {
+            long actual = MIN_VALUE.intValueExact();
+            throw new RuntimeException("BigInteger.MIN_VALUE.intValueExact()= " + actual);
+        } catch (ArithmeticException e) {
+            // excpected
+        }
+        try {
+            long actual = MAX_VALUE.intValueExact();
+            throw new RuntimeException("BigInteger.MAX_VALUE.intValueExact()= " + actual);
+        } catch (ArithmeticException e) {
+            // excpected
+        }
+    }
+
+    private static void testShortValueExact() {
+        System.out.println("Testing BigInteger.shortValueExact");
+        try {
+            long actual = MIN_VALUE.shortValueExact();
+            throw new RuntimeException("BigInteger.MIN_VALUE.shortValueExact()= " + actual);
+        } catch (ArithmeticException e) {
+            // excpected
+        }
+        try {
+            long actual = MAX_VALUE.shortValueExact();
+            throw new RuntimeException("BigInteger.MAX_VALUE.shortValueExact()= " + actual);
+        } catch (ArithmeticException e) {
+            // excpected
+        }
+    }
+
+    private static void testByteValueExact() {
+        System.out.println("Testing BigInteger.byteValueExact");
+        try {
+            long actual = MIN_VALUE.byteValueExact();
+            throw new RuntimeException("BigInteger.MIN_VALUE.byteValueExact()= " + actual);
+        } catch (ArithmeticException e) {
+            // excpected
+        }
+        try {
+            long actual = MAX_VALUE.byteValueExact();
+            throw new RuntimeException("BigInteger.MAX_VALUE.byteValueExact()= " + actual);
+        } catch (ArithmeticException e) {
+            // excpected
+        }
+    }
+
+    public static void main(String... args) {
+        testOverflowInMakePositive();
+        testBug8021204();
+        testOverflowInBitSieve();
+        testAdd();
+        testSubtract();
+        testMultiply();
+        testDivide();
+        testDivideAndRemainder();
+        testBug9005933();
+        testRemainder();
+        testPow();
+        testGcd();
+        testAbs();
+        testNegate();
+        testMod();
+        testModPow();
+//        testModInverse();
+        testShiftLeft();
+        testShiftRight();
+        testAnd();
+        testOr();
+        testXor();
+        testNot();
+        testSetBit();
+        testClearBit();
+        testFlipBit();
+        testGetLowestSetBit();
+        testBitLength();
+        testBitCount();
+        testToString();
+        testToByteArrayWithConstructor();
+        testIntValue();
+        testLongValue();
+        testFloatValue();
+        testDoubleValue();
+        testSerialization();
+        testLongValueExact();
+        testIntValueExact();
+        testShortValueExact();
+        testByteValueExact();
+    }
+}
--- a/test/jdk/java/net/InetSocketAddress/ToString.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/test/jdk/java/net/InetSocketAddress/ToString.java	Wed Oct 23 14:01:17 2019 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2001, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2001, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -23,19 +23,141 @@
 
 /*
  * @test
- * @bug 4464064
- * @summary InetSocketAddress.toString() throws NPE with unresolved address
+ * @bug 8225499 4464064
+ * @library /test/lib
+ * @summary InetSocketAddress::toString not friendly to IPv6 literal addresses
+ * @run testng/othervm ToString
+ * @run testng/othervm -Djava.net.preferIPv4Stack=true ToString
+ * @run testng/othervm -Djava.net.preferIPv6Addresses=true ToString
  */
 
 import java.net.*;
-import java.io.*;
 
+import jdk.test.lib.net.IPSupport;
+import org.testng.annotations.BeforeTest;
+import org.testng.annotations.DataProvider;
+import org.testng.annotations.Test;
 
 public class ToString {
 
-    public static void main (String args[]){
+    private static final String loopbackAddr;
+    private static final String wildcardAddr;
+    private static final String localAddr;
+
+    static {
+        try {
+            InetAddress loopback = InetAddress.getLoopbackAddress();
+            String addr = loopback.getHostAddress();
+            if (loopback instanceof Inet6Address) {
+                addr = "[" + addr + "]";
+            }
+            loopbackAddr = addr;
+
+            InetSocketAddress isa = new InetSocketAddress((InetAddress) null, 80);
+            addr = isa.getAddress().toString();
+            if (isa.getAddress() instanceof Inet6Address) {
+                addr = "::/[0:0:0:0:0:0:0:0]";
+            }
+            wildcardAddr = addr;
+
+            InetAddress ia = InetAddress.getLocalHost();
+            addr = ia.toString();
+            if (ia instanceof Inet6Address) {
+                addr = ia.getHostName() + "/[" + ia.getHostAddress() + "]";
+            }
+            localAddr = addr;
+
+        } catch (UnknownHostException uhe) {
+            throw new RuntimeException(uhe);
+        }
+    }
+
+    @BeforeTest
+    public void setup() {
+        IPSupport.throwSkippedExceptionIfNonOperational();
+    }
+
+    @Test
+    // InetSocketAddress.toString() throws NPE with unresolved address
+    public static void NPETest() {
+        System.out.println(new InetSocketAddress("unresolved", 12345));
+    }
+
+    @DataProvider(name = "hostPortArgs")
+    public Object[][] createArgs1() {
+        return new Object[][]{
+                // hostname, port number, expected string in format
+                // <hostname>/<IP literal>:<port> or
+                // <hostname>/<unresolved>:<port> if address is unresolved
+                {"::1", 80, "/[0:0:0:0:0:0:0:1]:80"},
+                {"fedc:ba98:7654:3210:fedc:ba98:7654:3210", 80, "/[fedc:ba98:7654:3210:fedc:ba98:7654:3210]:80"},
+                {"::192.9.5.5", 80, "/[0:0:0:0:0:0:c009:505]:80"},
+                {"127.0.0.1", 80, "/127.0.0.1:80"},
+                {"::ffff:192.0.2.128", 80, "/192.0.2.128:80"},
+                {"0", 80, "/0.0.0.0:80"},
+                {":", 80, ":/<unresolved>:80"},
+                {":1", 80, ":1/<unresolved>:80"}
+        };
+    }
 
-        System.out.println(new InetSocketAddress("unresolved", 12345));
+    @Test(dataProvider = "hostPortArgs")
+    public static void testConstructor(String host, int port, String string) {
+        String received = new InetSocketAddress(host, port).toString();
+
+        if (!string.equals(received)) {
+            throw new RuntimeException("Expected: " + string + " Received: " + received);
+        }
+    }
+
+    @DataProvider(name = "addrPortArgs")
+    public Object[][] createArgs2() {
+        InetAddress nullAddr = null;
+        try {
+            return new Object[][]{
+                    // InetAddress, port number, expected string
+                    {InetAddress.getLoopbackAddress(), 80, "localhost/" + loopbackAddr + ":80"},
+                    {InetAddress.getLocalHost(), 80, localAddr + ":80"},
+                    {InetAddress.getByAddress(new byte[]{1, 1, 1, 1}), 80, "/1.1.1.1:80"},
+                    {InetAddress.getByAddress(new byte[]{1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1}), 80, "/[101:101:101:101:101:101:101:101]:80"},
+                    {InetAddress.getByName("225.225.225.0"), 80, "/225.225.225.0:80"},
+                    {nullAddr, 80, wildcardAddr + ":80"}
+            };
+        } catch (UnknownHostException uhe) {
+            throw new RuntimeException("Data provider creation failed: " + uhe, uhe);
+        }
+    }
 
+    @Test(dataProvider = "addrPortArgs")
+    public static void testConstructor(InetAddress addr, int port, String string) {
+        String received = new InetSocketAddress(addr, port).toString();
+
+        if (!string.equals(received)) {
+            throw new RuntimeException("Expected: " + string + " Received: " + received);
+        }
+    }
+
+    @DataProvider(name = "unresolved")
+    public Object[][] createArgs3() {
+        return new Object[][]{
+                // hostname, port number, expected string
+                {"::1", 80, "::1/<unresolved>:80"},
+                {"fedc:ba98:7654:3210:fedc:ba98:7654:3210", 80, "fedc:ba98:7654:3210:fedc:ba98:7654:3210/<unresolved>:80"},
+                {"::192.9.5.5", 80, "::192.9.5.5/<unresolved>:80"},
+                {"127.0.0.1", 80, "127.0.0.1/<unresolved>:80"},
+                {"::ffff:192.0.2.128", 80, "::ffff:192.0.2.128/<unresolved>:80"},
+                {"0", 80, "0/<unresolved>:80"},
+                {"foo", 80, "foo/<unresolved>:80"},
+                {":", 80, ":/<unresolved>:80"},
+                {":1", 80, ":1/<unresolved>:80"}
+        };
+    }
+
+    @Test(dataProvider = "unresolved")
+    public static void testCreateUnresolved(String host, int port, String string) {
+        String received = InetSocketAddress.createUnresolved(host, port).toString();
+
+        if (!string.equals(received)) {
+            throw new RuntimeException("Expected: " + string + " Received: " + received);
+        }
     }
 }
--- a/test/jdk/java/net/SocketPermission/Ctor.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/test/jdk/java/net/SocketPermission/Ctor.java	Wed Oct 23 14:01:17 2019 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2001, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2001, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -23,19 +23,64 @@
 
 /*
  * @test
- * @bug 4391898
+ * @bug 4391898 8230407
  * @summary SocketPermission(":",...) throws ArrayIndexOutOfBoundsException
+ *          SocketPermission constructor argument checks
+ * @run testng Ctor
  */
 
-import java.net.*;
+import java.net.SocketPermission;
+import org.testng.annotations.Test;
+import static java.lang.System.out;
+import static org.testng.Assert.*;
 
 public class Ctor {
-    public static void main(String[] args) {
-        try {
-            SocketPermission sp = new java.net.SocketPermission(":", "connect");
-        } catch (java.lang.ArrayIndexOutOfBoundsException e) {
-            throw new RuntimeException(e);
-        }
-        System.out.println("Test passed!!!");
+
+    static final Class<NullPointerException> NPE = NullPointerException.class;
+    static final Class<IllegalArgumentException> IAE = IllegalArgumentException.class;
+
+    @Test
+    public void positive() {
+        // ArrayIndexOutOfBoundsException is the bug, 4391898, exists
+        SocketPermission sp1 =  new SocketPermission(":", "connect");
+    }
+
+    @Test
+    public void npe() {
+        NullPointerException e;
+        e = expectThrows(NPE, () -> new SocketPermission(null, null));
+        out.println("caught expected NPE: " + e);
+        e = expectThrows(NPE, () -> new SocketPermission("foo", null));
+        out.println("caught expected NPE: " + e);
+        e = expectThrows(NPE, () -> new SocketPermission(null, "connect"));
+        out.println("caught expected NPE: " + e);
+    }
+
+    @Test
+    public void iae() {
+        IllegalArgumentException e;
+        // host
+        e = expectThrows(IAE, () -> new SocketPermission("1:2:3:4", "connect"));
+        out.println("caught expected IAE: " + e);
+        e = expectThrows(IAE, () -> new SocketPermission("foo:5-4", "connect"));
+        out.println("caught expected IAE: " + e);
+
+        // actions
+        e = expectThrows(IAE, () -> new SocketPermission("foo", ""));
+        out.println("caught expected IAE: " + e);
+        e = expectThrows(IAE, () -> new SocketPermission("foo", "badAction"));
+        out.println("caught expected IAE: " + e);
+        e = expectThrows(IAE, () -> new SocketPermission("foo", "badAction,connect"));
+        out.println("caught expected IAE: " + e);
+        e = expectThrows(IAE, () -> new SocketPermission("foo", "badAction,,connect"));
+        out.println("caught expected IAE: " + e);
+        e = expectThrows(IAE, () -> new SocketPermission("foo", ",connect"));
+        out.println("caught expected IAE: " + e);
+        e = expectThrows(IAE, () -> new SocketPermission("foo", ",,connect"));
+        out.println("caught expected IAE: " + e);
+        e = expectThrows(IAE, () -> new SocketPermission("foo", "connect,"));
+        out.println("caught expected IAE: " + e);
+        e = expectThrows(IAE, () -> new SocketPermission("foo", "connect,,"));
+        out.println("caught expected IAE: " + e);
     }
 }
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/jdk/java/net/httpclient/HttpRedirectTest.java	Wed Oct 23 14:01:17 2019 -0400
@@ -0,0 +1,457 @@
+/*
+ * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+import com.sun.net.httpserver.HttpServer;
+import com.sun.net.httpserver.HttpsConfigurator;
+import com.sun.net.httpserver.HttpsServer;
+import jdk.test.lib.net.SimpleSSLContext;
+import org.testng.annotations.BeforeClass;
+import org.testng.annotations.AfterClass;
+import org.testng.annotations.DataProvider;
+import org.testng.annotations.Test;
+import static org.testng.Assert.*;
+
+import javax.net.ssl.SSLContext;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.net.InetAddress;
+import java.net.InetSocketAddress;
+import java.net.Proxy;
+import java.net.ProxySelector;
+import java.net.SocketAddress;
+import java.net.URI;
+import java.net.URISyntaxException;
+import java.net.http.HttpClient;
+import java.net.http.HttpRequest;
+import java.net.http.HttpResponse;
+import java.nio.charset.StandardCharsets;
+import java.util.List;
+import java.util.Map;
+import java.util.Random;
+import java.util.Set;
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.CopyOnWriteArrayList;
+import java.util.concurrent.CopyOnWriteArraySet;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.LinkedBlockingQueue;
+import java.util.concurrent.ThreadPoolExecutor;
+import java.util.concurrent.TimeUnit;
+import java.util.concurrent.atomic.AtomicLong;
+
+/**
+ * @test
+ * @bug 8232625
+ * @summary This test verifies that the HttpClient works correctly when redirecting a post request.
+ * @library /test/lib http2/server
+ * @build jdk.test.lib.net.SimpleSSLContext HttpServerAdapters DigestEchoServer HttpRedirectTest
+ * @modules java.net.http/jdk.internal.net.http.common
+ *          java.net.http/jdk.internal.net.http.frame
+ *          java.net.http/jdk.internal.net.http.hpack
+ *          java.logging
+ *          java.base/sun.net.www.http
+ *          java.base/sun.net.www
+ *          java.base/sun.net
+ * @run testng/othervm -Dtest.requiresHost=true
+ *                   -Djdk.httpclient.HttpClient.log=headers
+ *                   -Djdk.internal.httpclient.debug=false
+ *                   HttpRedirectTest
+ *
+ */
+public class HttpRedirectTest implements HttpServerAdapters {
+    static final String GET_RESPONSE_BODY = "Lorem ipsum dolor sit amet";
+    static final String REQUEST_BODY = "Here it goes";
+    static final SSLContext context;
+    static {
+        try {
+            context = new SimpleSSLContext().get();
+            SSLContext.setDefault(context);
+        } catch (Exception x) {
+            throw new ExceptionInInitializerError(x);
+        }
+    }
+
+    final AtomicLong requestCounter = new AtomicLong();
+    final AtomicLong responseCounter = new AtomicLong();
+    HttpTestServer http1Server;
+    HttpTestServer http2Server;
+    HttpTestServer https1Server;
+    HttpTestServer https2Server;
+    DigestEchoServer.TunnelingProxy proxy;
+
+    URI http1URI;
+    URI https1URI;
+    URI http2URI;
+    URI https2URI;
+    InetSocketAddress proxyAddress;
+    ProxySelector proxySelector;
+    HttpClient client;
+    List<CompletableFuture<?>>  futures = new CopyOnWriteArrayList<>();
+    Set<URI> pending = new CopyOnWriteArraySet<>();
+
+    final ExecutorService executor = new ThreadPoolExecutor(12, 60, 10,
+            TimeUnit.SECONDS, new LinkedBlockingQueue<>()); // Shared by HTTP/1.1 servers
+    final ExecutorService clientexec = new ThreadPoolExecutor(6, 12, 1,
+            TimeUnit.SECONDS, new LinkedBlockingQueue<>()); // Used by the client
+
+    public HttpClient newHttpClient(ProxySelector ps) {
+        HttpClient.Builder builder = HttpClient
+                .newBuilder()
+                .sslContext(context)
+                .executor(clientexec)
+                .followRedirects(HttpClient.Redirect.ALWAYS)
+                .proxy(ps);
+        return builder.build();
+    }
+
+    @DataProvider(name="uris")
+    Object[][] testURIs() throws URISyntaxException {
+        List<URI> uris = List.of(
+                http1URI.resolve("direct/orig/"),
+                https1URI.resolve("direct/orig/"),
+                https1URI.resolve("proxy/orig/"),
+                http2URI.resolve("direct/orig/"),
+                https2URI.resolve("direct/orig/"),
+                https2URI.resolve("proxy/orig/"));
+        List<Map.Entry<Integer, String>> redirects = List.of(
+                Map.entry(301, "GET"),
+                Map.entry(308, "POST"),
+                Map.entry(302, "GET"),
+                Map.entry(303, "GET"),
+                Map.entry(307, "POST"),
+                Map.entry(300, "DO_NOT_FOLLOW"),
+                Map.entry(304, "DO_NOT_FOLLOW"),
+                Map.entry(305, "DO_NOT_FOLLOW"),
+                Map.entry(306, "DO_NOT_FOLLOW"),
+                Map.entry(309, "DO_NOT_FOLLOW"),
+                Map.entry(new Random().nextInt(90) + 310, "DO_NOT_FOLLOW")
+        );
+        Object[][] tests = new Object[redirects.size() * uris.size()][3];
+        int count = 0;
+        for (int i=0; i < uris.size(); i++) {
+            URI u = uris.get(i);
+            for (int j=0; j < redirects.size() ; j++) {
+                int code = redirects.get(j).getKey();
+                String m = redirects.get(j).getValue();
+                tests[count][0] = u.resolve(code +"/");
+                tests[count][1] = code;
+                tests[count][2] = m;
+                count++;
+            }
+        }
+        return tests;
+    }
+
+    @BeforeClass
+    public void setUp() throws Exception {
+        try {
+            InetSocketAddress sa = new InetSocketAddress(InetAddress.getLoopbackAddress(), 0);
+
+            // HTTP/1.1
+            HttpServer server1 = HttpServer.create(sa, 0);
+            server1.setExecutor(executor);
+            http1Server = HttpTestServer.of(server1);
+            http1Server.addHandler(new HttpTestRedirectHandler("http", http1Server),
+                    "/HttpRedirectTest/http1/");
+            http1Server.start();
+            http1URI = new URI("http://" + http1Server.serverAuthority() + "/HttpRedirectTest/http1/");
+
+
+            // HTTPS/1.1
+            HttpsServer sserver1 = HttpsServer.create(sa, 100);
+            sserver1.setExecutor(executor);
+            sserver1.setHttpsConfigurator(new HttpsConfigurator(context));
+            https1Server = HttpTestServer.of(sserver1);
+            https1Server.addHandler(new HttpTestRedirectHandler("https", https1Server),
+                    "/HttpRedirectTest/https1/");
+            https1Server.start();
+            https1URI = new URI("https://" + https1Server.serverAuthority() + "/HttpRedirectTest/https1/");
+
+            // HTTP/2.0
+            http2Server = HttpTestServer.of(
+                    new Http2TestServer("localhost", false, 0));
+            http2Server.addHandler(new HttpTestRedirectHandler("http", http2Server),
+                    "/HttpRedirectTest/http2/");
+            http2Server.start();
+            http2URI = new URI("http://" + http2Server.serverAuthority() + "/HttpRedirectTest/http2/");
+
+            // HTTPS/2.0
+            https2Server = HttpTestServer.of(
+                    new Http2TestServer("localhost", true, 0));
+            https2Server.addHandler(new HttpTestRedirectHandler("https", https2Server),
+                    "/HttpRedirectTest/https2/");
+            https2Server.start();
+            https2URI = new URI("https://" + https2Server.serverAuthority() + "/HttpRedirectTest/https2/");
+
+            proxy = DigestEchoServer.createHttpsProxyTunnel(
+                    DigestEchoServer.HttpAuthSchemeType.NONE);
+            proxyAddress = proxy.getProxyAddress();
+            proxySelector = new HttpProxySelector(proxyAddress);
+            client = newHttpClient(proxySelector);
+            System.out.println("Setup: done");
+        } catch (Exception x) {
+            tearDown(); throw x;
+        } catch (Error e) {
+            tearDown(); throw e;
+        }
+    }
+
+    private void testNonIdempotent(URI u, HttpRequest request,
+                                   int code, String method) throws Exception {
+        System.out.println("Testing with " + u);
+        CompletableFuture<HttpResponse<String>> respCf =
+                client.sendAsync(request, HttpResponse.BodyHandlers.ofString());
+        HttpResponse<String> resp = respCf.join();
+        if (method.equals("DO_NOT_FOLLOW")) {
+            assertEquals(resp.statusCode(), code, u + ": status code");
+        } else {
+            assertEquals(resp.statusCode(), 200, u + ": status code");
+        }
+        if (method.equals("POST")) {
+            assertEquals(resp.body(), REQUEST_BODY, u + ": body");
+        } else if (code == 304) {
+            assertEquals(resp.body(), "", u + ": body");
+        } else if (method.equals("DO_NOT_FOLLOW")) {
+            assertNotEquals(resp.body(), GET_RESPONSE_BODY, u + ": body");
+            assertNotEquals(resp.body(), REQUEST_BODY, u + ": body");
+        } else {
+            assertEquals(resp.body(), GET_RESPONSE_BODY, u + ": body");
+        }
+    }
+
+    public void testIdempotent(URI u, HttpRequest request,
+                               int code, String method) throws Exception {
+        CompletableFuture<HttpResponse<String>> respCf =
+                client.sendAsync(request, HttpResponse.BodyHandlers.ofString());
+        HttpResponse<String> resp = respCf.join();
+        if (method.equals("DO_NOT_FOLLOW")) {
+            assertEquals(resp.statusCode(), code, u + ": status code");
+        } else {
+            assertEquals(resp.statusCode(), 200, u + ": status code");
+        }
+        if (method.equals("POST")) {
+            assertEquals(resp.body(), REQUEST_BODY, u + ": body");
+        } else if (code == 304) {
+            assertEquals(resp.body(), "", u + ": body");
+        } else if (method.equals("DO_NOT_FOLLOW")) {
+            assertNotEquals(resp.body(), GET_RESPONSE_BODY, u + ": body");
+            assertNotEquals(resp.body(), REQUEST_BODY, u + ": body");
+        } else if (code == 303) {
+            assertEquals(resp.body(), GET_RESPONSE_BODY, u + ": body");
+        } else {
+            assertEquals(resp.body(), REQUEST_BODY, u + ": body");
+        }
+    }
+
+    @Test(dataProvider = "uris")
+    public void testPOST(URI uri, int code, String method) throws Exception {
+        URI u = uri.resolve("foo?n=" + requestCounter.incrementAndGet());
+        HttpRequest request = HttpRequest.newBuilder(u)
+                .POST(HttpRequest.BodyPublishers.ofString(REQUEST_BODY)).build();
+        // POST is not considered idempotent.
+        testNonIdempotent(u, request, code, method);
+    }
+
+    @Test(dataProvider = "uris")
+    public void testPUT(URI uri, int code, String method) throws Exception {
+        URI u = uri.resolve("foo?n=" + requestCounter.incrementAndGet());
+        System.out.println("Testing with " + u);
+        HttpRequest request = HttpRequest.newBuilder(u)
+                .PUT(HttpRequest.BodyPublishers.ofString(REQUEST_BODY)).build();
+        // PUT is considered idempotent.
+        testIdempotent(u, request, code, method);
+    }
+
+    @Test(dataProvider = "uris")
+    public void testFoo(URI uri, int code, String method) throws Exception {
+        URI u = uri.resolve("foo?n=" + requestCounter.incrementAndGet());
+        System.out.println("Testing with " + u);
+        HttpRequest request = HttpRequest.newBuilder(u)
+                .method("FOO",
+                        HttpRequest.BodyPublishers.ofString(REQUEST_BODY)).build();
+        // FOO is considered idempotent.
+        testIdempotent(u, request, code, method);
+    }
+
+    @Test(dataProvider = "uris")
+    public void testGet(URI uri, int code, String method) throws Exception {
+        URI u = uri.resolve("foo?n=" + requestCounter.incrementAndGet());
+        System.out.println("Testing with " + u);
+        HttpRequest request = HttpRequest.newBuilder(u)
+                .method("GET",
+                        HttpRequest.BodyPublishers.ofString(REQUEST_BODY)).build();
+        CompletableFuture<HttpResponse<String>> respCf =
+                client.sendAsync(request, HttpResponse.BodyHandlers.ofString());
+        HttpResponse<String> resp = respCf.join();
+        // body will be preserved except for 304 and 303: this is a GET.
+        if (method.equals("DO_NOT_FOLLOW")) {
+            assertEquals(resp.statusCode(), code, u + ": status code");
+        } else {
+            assertEquals(resp.statusCode(), 200, u + ": status code");
+        }
+        if (code == 304) {
+            assertEquals(resp.body(), "", u + ": body");
+        } else if (method.equals("DO_NOT_FOLLOW")) {
+            assertNotEquals(resp.body(), GET_RESPONSE_BODY, u + ": body");
+            assertNotEquals(resp.body(), REQUEST_BODY, u + ": body");
+        } else if (code == 303) {
+            assertEquals(resp.body(), GET_RESPONSE_BODY, u + ": body");
+        } else {
+            assertEquals(resp.body(), REQUEST_BODY, u + ": body");
+        }
+    }
+
+    @AfterClass
+    public void tearDown() {
+        proxy = stop(proxy, DigestEchoServer.TunnelingProxy::stop);
+        http1Server = stop(http1Server, HttpTestServer::stop);
+        https1Server = stop(https1Server, HttpTestServer::stop);
+        http2Server = stop(http2Server, HttpTestServer::stop);
+        https2Server = stop(https2Server, HttpTestServer::stop);
+        client = null;
+        try {
+            executor.awaitTermination(2000, TimeUnit.MILLISECONDS);
+        } catch (Throwable x) {
+        } finally {
+            executor.shutdownNow();
+        }
+        try {
+            clientexec.awaitTermination(2000, TimeUnit.MILLISECONDS);
+        } catch (Throwable x) {
+        } finally {
+            clientexec.shutdownNow();
+        }
+        System.out.println("Teardown: done");
+    }
+
+    private interface Stoppable<T> { public void stop(T service) throws Exception; }
+
+    static <T>  T stop(T service, Stoppable<T> stop) {
+        try { if (service != null) stop.stop(service); } catch (Throwable x) { };
+        return null;
+    }
+
+    static class HttpProxySelector extends ProxySelector {
+        private static final List<Proxy> NO_PROXY = List.of(Proxy.NO_PROXY);
+        private final List<Proxy> proxyList;
+        HttpProxySelector(InetSocketAddress proxyAddress) {
+            proxyList = List.of(new Proxy(Proxy.Type.HTTP, proxyAddress));
+        }
+
+        @Override
+        public List<Proxy> select(URI uri) {
+            // our proxy only supports tunneling
+            if (uri.getScheme().equalsIgnoreCase("https")) {
+                if (uri.getPath().contains("/proxy/")) {
+                    return proxyList;
+                }
+            }
+            return NO_PROXY;
+        }
+
+        @Override
+        public void connectFailed(URI uri, SocketAddress sa, IOException ioe) {
+            System.err.println("Connection to proxy failed: " + ioe);
+            System.err.println("Proxy: " + sa);
+            System.err.println("\tURI: " + uri);
+            ioe.printStackTrace();
+        }
+    }
+
+    public static class HttpTestRedirectHandler implements HttpTestHandler {
+        static final AtomicLong respCounter = new AtomicLong();
+        final String scheme;
+        final HttpTestServer server;
+        HttpTestRedirectHandler(String scheme, HttpTestServer server) {
+            this.scheme = scheme;
+            this.server = server;
+        }
+
+        @Override
+        public void handle(HttpTestExchange t) throws IOException {
+            try (InputStream is = t.getRequestBody()) {
+                byte[] bytes = is.readAllBytes();
+                URI u = t.getRequestURI();
+                long responseID = Long.parseLong(u.getQuery().substring(2));
+                String path = u.getPath();
+                int i = path.lastIndexOf('/');
+                String file = path.substring(i+1);
+                String parent =  path.substring(0, i);
+                int code = 200;
+                if (file.equals("foo")) {
+                    i = parent.lastIndexOf("/");
+                    code = Integer.parseInt(parent.substring(i+1));
+                }
+                String response;
+                if (code == 200) {
+                    if (t.getRequestMethod().equals("GET")) {
+                        if (bytes.length == 0) {
+                            response = GET_RESPONSE_BODY;
+                        } else {
+                            response = new String(bytes, StandardCharsets.UTF_8);
+                        }
+                    } else if (t.getRequestMethod().equals("POST")) {
+                        response = new String(bytes, StandardCharsets.UTF_8);
+                    } else {
+                        response = new String(bytes, StandardCharsets.UTF_8);
+                    }
+                } else if (code < 300 || code > 399) {
+                    response = "Unexpected code: " + code;
+                    code = 400;
+                } else {
+                    try {
+                        URI reloc = new URI(scheme, server.serverAuthority(), parent + "/bar", u.getQuery(), null);
+                        t.getResponseHeaders().addHeader("Location", reloc.toASCIIString());
+                        if (code != 304) {
+                            response = "Code: " + code;
+                        } else response = null;
+                    } catch (URISyntaxException x) {
+                        x.printStackTrace();
+                        x.printStackTrace(System.out);
+                        code = 400;
+                        response = x.toString();
+                    }
+                }
+
+                System.out.println("Server " + t.getRequestURI() + " sending response " + responseID);
+                System.out.println("code: " + code + " body: " + response);
+                t.sendResponseHeaders(code, code == 304 ? 0: -1);
+                if (code != 304) {
+                    try (OutputStream os = t.getResponseBody()) {
+                        bytes = response.getBytes(StandardCharsets.UTF_8);
+                        os.write(bytes);
+                        os.flush();
+                    }
+                } else {
+                    bytes = new byte[0];
+                }
+
+                System.out.println("\tresp:" + responseID + ": wrote " + bytes.length + " bytes");
+            } catch (Throwable e) {
+                e.printStackTrace();
+                e.printStackTrace(System.out);
+                throw e;
+            }
+        }
+    }
+
+}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/jdk/java/net/httpclient/HttpSlowServerTest.java	Wed Oct 23 14:01:17 2019 -0400
@@ -0,0 +1,313 @@
+/*
+ * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+import com.sun.net.httpserver.HttpServer;
+import com.sun.net.httpserver.HttpsConfigurator;
+import com.sun.net.httpserver.HttpsServer;
+import jdk.test.lib.net.SimpleSSLContext;
+
+import javax.net.ssl.SSLContext;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.net.InetAddress;
+import java.net.InetSocketAddress;
+import java.net.Proxy;
+import java.net.ProxySelector;
+import java.net.SocketAddress;
+import java.net.URI;
+import java.net.http.HttpClient;
+import java.net.http.HttpRequest;
+import java.net.http.HttpResponse;
+import java.nio.charset.StandardCharsets;
+import java.time.Duration;
+import java.util.List;
+import java.util.Set;
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.CopyOnWriteArrayList;
+import java.util.concurrent.CopyOnWriteArraySet;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.LinkedBlockingQueue;
+import java.util.concurrent.ThreadPoolExecutor;
+import java.util.concurrent.TimeUnit;
+import java.util.concurrent.atomic.AtomicLong;
+
+/**
+ * @test
+ * @summary This test verifies that the HttpClient works correctly when connected to a
+ *          slow server.
+ * @library /test/lib http2/server
+ * @build jdk.test.lib.net.SimpleSSLContext HttpServerAdapters DigestEchoServer HttpSlowServerTest
+ * @modules java.net.http/jdk.internal.net.http.common
+ *          java.net.http/jdk.internal.net.http.frame
+ *          java.net.http/jdk.internal.net.http.hpack
+ *          java.logging
+ *          java.base/sun.net.www.http
+ *          java.base/sun.net.www
+ *          java.base/sun.net
+ * @run main/othervm -Dtest.requiresHost=true
+ *                   -Djdk.httpclient.HttpClient.log=headers
+ *                   -Djdk.internal.httpclient.debug=false
+ *                   HttpSlowServerTest
+ *
+ */
+public class HttpSlowServerTest implements HttpServerAdapters {
+    static final List<String> data = List.of(
+            "Lorem ipsum",
+            "dolor sit amet",
+            "consectetur adipiscing elit, sed do eiusmod tempor",
+            "quis nostrud exercitation ullamco",
+            "laboris nisi",
+            "ut",
+            "aliquip ex ea commodo consequat.",
+            "Duis aute irure dolor in reprehenderit in voluptate velit esse",
+            "cillum dolore eu fugiat nulla pariatur.",
+            "Excepteur sint occaecat cupidatat non proident."
+    );
+
+    static final SSLContext context;
+    static {
+        try {
+            context = new SimpleSSLContext().get();
+            SSLContext.setDefault(context);
+        } catch (Exception x) {
+            throw new ExceptionInInitializerError(x);
+        }
+    }
+
+    final AtomicLong requestCounter = new AtomicLong();
+    final AtomicLong responseCounter = new AtomicLong();
+    HttpTestServer http1Server;
+    HttpTestServer http2Server;
+    HttpTestServer https1Server;
+    HttpTestServer https2Server;
+    DigestEchoServer.TunnelingProxy proxy;
+
+    URI http1URI;
+    URI https1URI;
+    URI http2URI;
+    URI https2URI;
+    InetSocketAddress proxyAddress;
+    ProxySelector proxySelector;
+    HttpClient client;
+    List<CompletableFuture<?>>  futures = new CopyOnWriteArrayList<>();
+    Set<URI> pending = new CopyOnWriteArraySet<>();
+
+    final ExecutorService executor = new ThreadPoolExecutor(12, 60, 10,
+            TimeUnit.SECONDS, new LinkedBlockingQueue<>()); // Shared by HTTP/1.1 servers
+    final ExecutorService clientexec = new ThreadPoolExecutor(6, 12, 1,
+            TimeUnit.SECONDS, new LinkedBlockingQueue<>()); // Used by the client
+
+    public HttpClient newHttpClient(ProxySelector ps) {
+        HttpClient.Builder builder = HttpClient
+                .newBuilder()
+                .sslContext(context)
+                .executor(clientexec)
+                .proxy(ps);
+        return builder.build();
+    }
+
+    public void setUp() throws Exception {
+        try {
+            InetSocketAddress sa = new InetSocketAddress(InetAddress.getLoopbackAddress(), 0);
+
+            // HTTP/1.1
+            HttpServer server1 = HttpServer.create(sa, 0);
+            server1.setExecutor(executor);
+            http1Server = HttpTestServer.of(server1);
+            http1Server.addHandler(new HttpTestSlowHandler(), "/HttpSlowServerTest/http1/");
+            http1Server.start();
+            http1URI = new URI("http://" + http1Server.serverAuthority() + "/HttpSlowServerTest/http1/");
+
+
+            // HTTPS/1.1
+            HttpsServer sserver1 = HttpsServer.create(sa, 100);
+            sserver1.setExecutor(executor);
+            sserver1.setHttpsConfigurator(new HttpsConfigurator(context));
+            https1Server = HttpTestServer.of(sserver1);
+            https1Server.addHandler(new HttpTestSlowHandler(), "/HttpSlowServerTest/https1/");
+            https1Server.start();
+            https1URI = new URI("https://" + https1Server.serverAuthority() + "/HttpSlowServerTest/https1/");
+
+            // HTTP/2.0
+            http2Server = HttpTestServer.of(
+                    new Http2TestServer("localhost", false, 0));
+            http2Server.addHandler(new HttpTestSlowHandler(), "/HttpSlowServerTest/http2/");
+            http2Server.start();
+            http2URI = new URI("http://" + http2Server.serverAuthority() + "/HttpSlowServerTest/http2/");
+
+            // HTTPS/2.0
+            https2Server = HttpTestServer.of(
+                    new Http2TestServer("localhost", true, 0));
+            https2Server.addHandler(new HttpTestSlowHandler(), "/HttpSlowServerTest/https2/");
+            https2Server.start();
+            https2URI = new URI("https://" + https2Server.serverAuthority() + "/HttpSlowServerTest/https2/");
+
+            proxy = DigestEchoServer.createHttpsProxyTunnel(
+                    DigestEchoServer.HttpAuthSchemeType.NONE);
+            proxyAddress = proxy.getProxyAddress();
+            proxySelector = new HttpProxySelector(proxyAddress);
+            client = newHttpClient(proxySelector);
+            System.out.println("Setup: done");
+        } catch (Exception x) {
+            tearDown(); throw x;
+        } catch (Error e) {
+            tearDown(); throw e;
+        }
+    }
+
+    public static void main(String[] args) throws Exception {
+        HttpSlowServerTest test = new HttpSlowServerTest();
+        test.setUp();
+        long start = System.nanoTime();
+        try {
+            test.run(args);
+        } finally {
+            try {
+                long elapsed = System.nanoTime() - start;
+                System.out.println("*** Elapsed: " + Duration.ofNanos(elapsed));
+            } finally {
+                test.tearDown();
+            }
+        }
+    }
+
+    public void run(String... args) throws Exception {
+        List<URI> serverURIs = List.of(http1URI, http2URI, https1URI, https2URI);
+        for (int i=0; i<20; i++) {
+            for (URI base : serverURIs) {
+                if (base.getScheme().equalsIgnoreCase("https")) {
+                    URI proxy = i % 1 == 0 ? base.resolve(URI.create("proxy/foo?n="+requestCounter.incrementAndGet()))
+                    : base.resolve(URI.create("direct/foo?n="+requestCounter.incrementAndGet()));
+                    test(proxy);
+                }
+            }
+            for (URI base : serverURIs) {
+                URI direct = base.resolve(URI.create("direct/foo?n="+requestCounter.incrementAndGet()));
+                test(direct);
+            }
+        }
+        CompletableFuture.allOf(futures.toArray(new CompletableFuture[0])).join();
+    }
+
+    public void test(URI uri) throws Exception {
+        System.out.println("Testing with " + uri);
+        pending.add(uri);
+        HttpRequest request = HttpRequest.newBuilder(uri).build();
+        CompletableFuture<HttpResponse<String>> resp =
+                client.sendAsync(request, HttpResponse.BodyHandlers.ofString())
+                .whenComplete((r, t) -> this.requestCompleted(request, r, t));
+        futures.add(resp);
+    }
+
+    private void requestCompleted(HttpRequest request, HttpResponse<?> r, Throwable t) {
+        responseCounter.incrementAndGet();
+        pending.remove(request.uri());
+        System.out.println(request + " -> " + (t == null ? r : t)
+                + " [still pending: " + (requestCounter.get() - responseCounter.get()) +"]");
+        if (pending.size() < 5 && requestCounter.get() > 100) {
+            pending.forEach(u -> System.out.println("\tpending: " + u));
+        }
+    }
+
+    public void tearDown() {
+        proxy = stop(proxy, DigestEchoServer.TunnelingProxy::stop);
+        http1Server = stop(http1Server, HttpTestServer::stop);
+        https1Server = stop(https1Server, HttpTestServer::stop);
+        http2Server = stop(http2Server, HttpTestServer::stop);
+        https2Server = stop(https2Server, HttpTestServer::stop);
+        client = null;
+        try {
+            executor.awaitTermination(2000, TimeUnit.MILLISECONDS);
+        } catch (Throwable x) {
+        } finally {
+            executor.shutdownNow();
+        }
+        try {
+            clientexec.awaitTermination(2000, TimeUnit.MILLISECONDS);
+        } catch (Throwable x) {
+        } finally {
+            clientexec.shutdownNow();
+        }
+        System.out.println("Teardown: done");
+    }
+
+    private interface Stoppable<T> { public void stop(T service) throws Exception; }
+
+    static <T>  T stop(T service, Stoppable<T> stop) {
+        try { if (service != null) stop.stop(service); } catch (Throwable x) { };
+        return null;
+    }
+
+    static class HttpProxySelector extends ProxySelector {
+        private static final List<Proxy> NO_PROXY = List.of(Proxy.NO_PROXY);
+        private final List<Proxy> proxyList;
+        HttpProxySelector(InetSocketAddress proxyAddress) {
+            proxyList = List.of(new Proxy(Proxy.Type.HTTP, proxyAddress));
+        }
+
+        @Override
+        public List<Proxy> select(URI uri) {
+            // our proxy only supports tunneling
+            if (uri.getScheme().equalsIgnoreCase("https")) {
+                if (uri.getPath().contains("/proxy/")) {
+                    return proxyList;
+                }
+            }
+            return NO_PROXY;
+        }
+
+        @Override
+        public void connectFailed(URI uri, SocketAddress sa, IOException ioe) {
+            System.err.println("Connection to proxy failed: " + ioe);
+            System.err.println("Proxy: " + sa);
+            System.err.println("\tURI: " + uri);
+            ioe.printStackTrace();
+        }
+    }
+
+    public static class HttpTestSlowHandler implements HttpTestHandler {
+        static final AtomicLong respCounter = new AtomicLong();
+        @Override
+        public void handle(HttpTestExchange t) throws IOException {
+            try (InputStream is = t.getRequestBody();
+                 OutputStream os = t.getResponseBody()) {
+                byte[] bytes = is.readAllBytes();
+                assert bytes.length == 0;
+                URI u = t.getRequestURI();
+                long responseID = Long.parseLong(u.getQuery().substring(2));
+                System.out.println("Server " + t.getRequestURI() + " sending response " + responseID);
+                t.sendResponseHeaders(200, -1);
+                for (String part : data) {
+                    bytes = part.getBytes(StandardCharsets.UTF_8);
+                    os.write(bytes);
+                    os.flush();
+                    System.out.println("\tresp:" + responseID + ": wrote " + bytes.length + " bytes");
+                    // wait...
+                    try { Thread.sleep(300); } catch (InterruptedException x) {};
+                }
+                System.out.println("\tresp:" + responseID + ": done");
+            }
+        }
+    }
+
+}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/jdk/java/net/httpclient/LargeHandshakeTest.java	Wed Oct 23 14:01:17 2019 -0400
@@ -0,0 +1,1200 @@
+/*
+ * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+import com.sun.net.httpserver.HttpServer;
+import com.sun.net.httpserver.HttpsConfigurator;
+import com.sun.net.httpserver.HttpsServer;
+
+import javax.net.ssl.KeyManagerFactory;
+import javax.net.ssl.SSLContext;
+import javax.net.ssl.TrustManagerFactory;
+import java.io.ByteArrayInputStream;
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.io.UncheckedIOException;
+import java.net.InetAddress;
+import java.net.InetSocketAddress;
+import java.net.Proxy;
+import java.net.ProxySelector;
+import java.net.SocketAddress;
+import java.net.URI;
+import java.net.http.HttpClient;
+import java.net.http.HttpRequest;
+import java.net.http.HttpResponse;
+import java.security.KeyManagementException;
+import java.security.KeyStore;
+import java.security.KeyStoreException;
+import java.security.NoSuchAlgorithmException;
+import java.security.UnrecoverableKeyException;
+import java.security.cert.CertificateException;
+import java.time.Duration;
+import java.util.Base64;
+import java.util.List;
+import java.util.Set;
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.CopyOnWriteArrayList;
+import java.util.concurrent.CopyOnWriteArraySet;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.LinkedBlockingQueue;
+import java.util.concurrent.ThreadPoolExecutor;
+import java.util.concurrent.TimeUnit;
+import java.util.concurrent.atomic.AtomicLong;
+
+/**
+ * @test
+ * @bug 8231449
+ * @summary This test verifies that the HttpClient works correctly when the server
+ *          sends a large certificate. This test will not pass without
+ *          the fix for JDK-8231449. To regenerate the certificate, modify the
+ *          COMMAND constant as you need, possibly changing the start date
+ *          and validity of the certificate in the command, then run the test.
+ *          The test will run with the old certificate, but will print the new command.
+ *          Copy paste the new command printed by this test into a terminal.
+ *          Then modify the at run line to pass the file generated by that command
+ *          as first argument, and copy paste the new values of the COMMAND and
+ *          BASE64_CERT constant printed by the test into the test.
+ *          Then restore the original at run line and test again.
+ * @library /test/lib http2/server
+ * @build jdk.test.lib.net.SimpleSSLContext HttpServerAdapters DigestEchoServer LargeHandshakeTest
+ * @modules java.net.http/jdk.internal.net.http.common
+ *          java.net.http/jdk.internal.net.http.frame
+ *          java.net.http/jdk.internal.net.http.hpack
+ *          java.logging
+ *          java.base/sun.net.www.http
+ *          java.base/sun.net.www
+ *          java.base/sun.net
+ * @run main/othervm -Dtest.requiresHost=true
+ *                   -Djdk.httpclient.HttpClient.log=headers
+ *                   -Djdk.internal.httpclient.debug=true
+ *                   LargeHandshakeTest
+ *
+ */
+public class LargeHandshakeTest implements HttpServerAdapters {
+
+    // Use this command to regenerate the keystore file whose content is
+    // base 64 encoded into this file (close your eyes):
+    private static final String COMMAND =
+                    "keytool -genkeypair -keyalg RSA -startdate 2019/09/30 -valid" +
+                    "ity 13000 -keysize 1024 -dname \"C=Duke, ST=CA-State, L=CA-Ci" +
+                    "ty, O=CA-Org\" -deststoretype PKCS12 -alias server -keystore " +
+                    "temp0.jks -storepass passphrase -ext san:critical=dns:localh" +
+                    "ost,ip:127.0.0.1,ip:0:0:0:0:0:0:0:1,uri:http://www.example.c" +
+                    "om/1.2.3.6.1.4.1.11129.666.666.666.999/041287234567896776987" +
+                    "654327821000412872345678967769876543278210004128723456789677" +
+                    "698765432782100041287234567896776987654327821000412872345678" +
+                    "967769876543278210004128723456789677698765432782100041287234" +
+                    "567896776987654327821000412872345678967769876543278210004128" +
+                    "723456789677698765432782100041287234567896776987654327821000" +
+                    "412872345678967769876543278210004128723456789677698765432782" +
+                    "100041287234567896776987654327821000412872345678967769876543" +
+                    "278210004128723456789677698765432782100041287234567896776987" +
+                    "654327821000412872345678967769876543278210004128723456789677" +
+                    "698765432782100041287234567896776987654327821000412872345678" +
+                    "967769876543278210004128723456789677698765432782100041287234" +
+                    "567896776987654327821000412872345678967769876543278210004128" +
+                    "723456789677698765432782100041287234567896776987654327821000" +
+                    "412872345678967769876543278210004128723456789677698765432782" +
+                    "100041287234567896776987654327821000412872345678967769876543" +
+                    "278210004128723456789677698765432782100041287234567896776987" +
+                    "654327821000412872345678967769876543278210004128723456789677" +
+                    "698765432782100041287234567896776987654327821000412872345678" +
+                    "967769876543278210004128723456789677698765432782100041287234" +
+                    "567896776987654327821000412872345678967769876543278210004128" +
+                    "723456789677698765432782100041287234567896776987654327821000" +
+                    "412872345678967769876543278210004128723456789677698765432782" +
+                    "100041287234567896776987654327821000412872345678967769876543" +
+                    "278210004128723456789677698765432782100041287234567896776987" +
+                    "654327821000412872345678967769876543278210004128723456789677" +
+                    "698765432782100,uri:http://www.example.com/1.2.3.6.1.4.1.111" +
+                    "29.666.666.666.999.2/041287234567896776987654327821000412872" +
+                    "345678967769876543278210004128723456789677698765432782100041" +
+                    "287234567896776987654327821000412872345678967769876543278210" +
+                    "004128723456789677698765432782100041287234567896776987654327" +
+                    "821000412872345678967769876543278210004128723456789677698765" +
+                    "432782100041287234567896776987654327821000412872345678967769" +
+                    "876543278210004128723456789677698765432782100041287234567896" +
+                    "776987654327821000412872345678967769876543278210004128723456" +
+                    "789677698765432782100041287234567896776987654327821000412872" +
+                    "345678967769876543278210004128723456789677698765432782100041" +
+                    "287234567896776987654327821000412872345678967769876543278210" +
+                    "004128723456789677698765432782100041287234567896776987654327" +
+                    "821000412872345678967769876543278210004128723456789677698765" +
+                    "432782100041287234567896776987654327821000412872345678967769" +
+                    "876543278210004128723456789677698765432782100041287234567896" +
+                    "776987654327821000412872345678967769876543278210004128723456" +
+                    "789677698765432782100041287234567896776987654327821000412872" +
+                    "345678967769876543278210004128723456789677698765432782100041" +
+                    "287234567896776987654327821000412872345678967769876543278210" +
+                    "004128723456789677698765432782100041287234567896776987654327" +
+                    "821000412872345678967769876543278210004128723456789677698765" +
+                    "432782100041287234567896776987654327821000412872345678967769" +
+                    "876543278210004128723456789677698765432782100041287234567896" +
+                    "776987654327821000412872345678967769876543278210004128723456" +
+                    "789677698765432782100041287234567896776987654327821000412872" +
+                    "345678967769876543278210004128723456789677698765432782100,ur" +
+                    "i:http://www.example.com/1.2.3.6.1.4.1.11129.666.666.666.999" +
+                    ".2/041287234567896776987654327821000412872345678967769876543" +
+                    "278210004128723456789677698765432782100041287234567896776987" +
+                    "654327821000412872345678967769876543278210004128723456789677" +
+                    "698765432782100041287234567896776987654327821000412872345678" +
+                    "967769876543278210004128723456789677698765432782100041287234" +
+                    "567896776987654327821000412872345678967769876543278210004128" +
+                    "723456789677698765432782100041287234567896776987654327821000" +
+                    "412872345678967769876543278210004128723456789677698765432782" +
+                    "100041287234567896776987654327821000412872345678967769876543" +
+                    "278210004128723456789677698765432782100041287234567896776987" +
+                    "654327821000412872345678967769876543278210004128723456789677" +
+                    "698765432782100041287234567896776987654327821000412872345678" +
+                    "967769876543278210004128723456789677698765432782100041287234" +
+                    "567896776987654327821000412872345678967769876543278210004128" +
+                    "723456789677698765432782100041287234567896776987654327821000" +
+                    "412872345678967769876543278210004128723456789677698765432782" +
+                    "100041287234567896776987654327821000412872345678967769876543" +
+                    "278210004128723456789677698765432782100041287234567896776987" +
+                    "654327821000412872345678967769876543278210004128723456789677" +
+                    "698765432782100041287234567896776987654327821000412872345678" +
+                    "967769876543278210004128723456789677698765432782100041287234" +
+                    "567896776987654327821000412872345678967769876543278210004128" +
+                    "723456789677698765432782100041287234567896776987654327821000" +
+                    "412872345678967769876543278210004128723456789677698765432782" +
+                    "100041287234567896776987654327821000412872345678967769876543" +
+                    "27821000412872345678967769876543278210001,uri:http://www.exa" +
+                    "mple.com/1.2.3.6.1.4.1.11129.666.666.666.999.2/0412872345678" +
+                    "967769876543278210004128723456789677698765432782100041287234" +
+                    "567896776987654327821000412872345678967769876543278210004128" +
+                    "723456789677698765432782100041287234567896776987654327821000" +
+                    "412872345678967769876543278210004128723456789677698765432782" +
+                    "100041287234567896776987654327821000412872345678967769876543" +
+                    "278210004128723456789677698765432782100041287234567896776987" +
+                    "654327821000412872345678967769876543278210004128723456789677" +
+                    "698765432782100041287234567896776987654327821000412872345678" +
+                    "967769876543278210004128723456789677698765432782100041287234" +
+                    "567896776987654327821000412872345678967769876543278210004128" +
+                    "723456789677698765432782100041287234567896776987654327821000" +
+                    "412872345678967769876543278210004128723456789677698765432782" +
+                    "100041287234567896776987654327821000412872345678967769876543" +
+                    "278210004128723456789677698765432782100041287234567896776987" +
+                    "654327821000412872345678967769876543278210004128723456789677" +
+                    "698765432782100041287234567896776987654327821000412872345678" +
+                    "967769876543278210004128723456789677698765432782100041287234" +
+                    "567896776987654327821000412872345678967769876543278210004128" +
+                    "723456789677698765432782100041287234567896776987654327821000" +
+                    "412872345678967769876543278210004128723456789677698765432782" +
+                    "100041287234567896776987654327821000412872345678967769876543" +
+                    "278210004128723456789677698765432782100041287234567896776987" +
+                    "654327821000412872345678967769876543278210004128723456789677" +
+                    "698765432782100041287234567896776987654327821000412872345678" +
+                    "967769876543278210004128723456789677698765432782100041287234" +
+                    "5678967769876543278210002,uri:http://www.example.com/1.2.3.6" +
+                    ".1.4.1.11129.666.666.666.999.2/04128723456789677698765432782" +
+                    "100041287234567896776987654327821000412872345678967769876543" +
+                    "278210004128723456789677698765432782100041287234567896776987" +
+                    "654327821000412872345678967769876543278210004128723456789677" +
+                    "698765432782100041287234567896776987654327821000412872345678" +
+                    "967769876543278210004128723456789677698765432782100041287234" +
+                    "567896776987654327821000412872345678967769876543278210004128" +
+                    "723456789677698765432782100041287234567896776987654327821000" +
+                    "412872345678967769876543278210004128723456789677698765432782" +
+                    "100041287234567896776987654327821000412872345678967769876543" +
+                    "278210004128723456789677698765432782100041287234567896776987" +
+                    "654327821000412872345678967769876543278210004128723456789677" +
+                    "698765432782100041287234567896776987654327821000412872345678" +
+                    "967769876543278210004128723456789677698765432782100041287234" +
+                    "567896776987654327821000412872345678967769876543278210004128" +
+                    "723456789677698765432782100041287234567896776987654327821000" +
+                    "412872345678967769876543278210004128723456789677698765432782" +
+                    "100041287234567896776987654327821000412872345678967769876543" +
+                    "278210004128723456789677698765432782100041287234567896776987" +
+                    "654327821000412872345678967769876543278210004128723456789677" +
+                    "698765432782100041287234567896776987654327821000412872345678" +
+                    "967769876543278210004128723456789677698765432782100041287234" +
+                    "567896776987654327821000412872345678967769876543278210004128" +
+                    "723456789677698765432782100041287234567896776987654327821000" +
+                    "412872345678967769876543278210004128723456789677698765432782" +
+                    "100041287234567896776987654327821000412872345678967769876543" +
+                    "278210003,uri:http://www.example.com/1.2.3.6.1.4.1.11129.666" +
+                    ".666.666.999.2/041287234567896776987654327821000412872345678" +
+                    "967769876543278210004128723456789677698765432782100041287234" +
+                    "567896776987654327821000412872345678967769876543278210004128" +
+                    "723456789677698765432782100041287234567896776987654327821000" +
+                    "412872345678967769876543278210004128723456789677698765432782" +
+                    "100041287234567896776987654327821000412872345678967769876543" +
+                    "278210004128723456789677698765432782100041287234567896776987" +
+                    "654327821000412872345678967769876543278210004128723456789677" +
+                    "698765432782100041287234567896776987654327821000412872345678" +
+                    "967769876543278210004128723456789677698765432782100041287234" +
+                    "567896776987654327821000412872345678967769876543278210004128" +
+                    "723456789677698765432782100041287234567896776987654327821000" +
+                    "412872345678967769876543278210004128723456789677698765432782" +
+                    "100041287234567896776987654327821000412872345678967769876543" +
+                    "278210004128723456789677698765432782100041287234567896776987" +
+                    "654327821000412872345678967769876543278210004128723456789677" +
+                    "698765432782100041287234567896776987654327821000412872345678" +
+                    "967769876543278210004128723456789677698765432782100041287234" +
+                    "567896776987654327821000412872345678967769876543278210004128" +
+                    "723456789677698765432782100041287234567896776987654327821000" +
+                    "412872345678967769876543278210004128723456789677698765432782" +
+                    "100041287234567896776987654327821000412872345678967769876543" +
+                    "278210004128723456789677698765432782100041287234567896776987" +
+                    "654327821000412872345678967769876543278210004128723456789677" +
+                    "698765432782100041287234567896776987654327821000412872345678" +
+                    "96776987654327821000412872345678967769876543278210004,uri:ht" +
+                    "tp://www.example.com/1.2.3.6.1.4.1.11129.666.666.666.999.2/0" +
+                    "412872345678967769876543278210004128723456789677698765432782" +
+                    "100041287234567896776987654327821000412872345678967769876543" +
+                    "278210004128723456789677698765432782100041287234567896776987" +
+                    "654327821000412872345678967769876543278210004128723456789677" +
+                    "698765432782100041287234567896776987654327821000412872345678" +
+                    "967769876543278210004128723456789677698765432782100041287234" +
+                    "567896776987654327821000412872345678967769876543278210004128" +
+                    "723456789677698765432782100041287234567896776987654327821000" +
+                    "412872345678967769876543278210004128723456789677698765432782" +
+                    "100041287234567896776987654327821000412872345678967769876543" +
+                    "278210004128723456789677698765432782100041287234567896776987" +
+                    "654327821000412872345678967769876543278210004128723456789677" +
+                    "698765432782100041287234567896776987654327821000412872345678" +
+                    "967769876543278210004128723456789677698765432782100041287234" +
+                    "567896776987654327821000412872345678967769876543278210004128" +
+                    "723456789677698765432782100041287234567896776987654327821000" +
+                    "412872345678967769876543278210004128723456789677698765432782" +
+                    "100041287234567896776987654327821000412872345678967769876543" +
+                    "278210004128723456789677698765432782100041287234567896776987" +
+                    "654327821000412872345678967769876543278210004128723456789677" +
+                    "698765432782100041287234567896776987654327821000412872345678" +
+                    "967769876543278210004128723456789677698765432782100041287234" +
+                    "567896776987654327821000412872345678967769876543278210004128" +
+                    "723456789677698765432782100041287234567896776987654327821000" +
+                    "412872345678967769876543278210004128723456789677698765432782" +
+                    "1000412872345678967769876543278210005,uri:http://www.example" +
+                    ".com/1.2.3.6.1.4.1.11129.666.666.666.999.2/04128723456789677" +
+                    "698765432782100041287234567896776987654327821000412872345678" +
+                    "967769876543278210004128723456789677698765432782100041287234" +
+                    "567896776987654327821000412872345678967769876543278210004128" +
+                    "723456789677698765432782100041287234567896776987654327821000" +
+                    "412872345678967769876543278210004128723456789677698765432782" +
+                    "100041287234567896776987654327821000412872345678967769876543" +
+                    "278210004128723456789677698765432782100041287234567896776987" +
+                    "654327821000412872345678967769876543278210004128723456789677" +
+                    "698765432782100041287234567896776987654327821000412872345678" +
+                    "967769876543278210004128723456789677698765432782100041287234" +
+                    "567896776987654327821000412872345678967769876543278210004128" +
+                    "723456789677698765432782100041287234567896776987654327821000" +
+                    "412872345678967769876543278210004128723456789677698765432782" +
+                    "100041287234567896776987654327821000412872345678967769876543" +
+                    "278210004128723456789677698765432782100041287234567896776987" +
+                    "654327821000412872345678967769876543278210004128723456789677" +
+                    "698765432782100041287234567896776987654327821000412872345678" +
+                    "967769876543278210004128723456789677698765432782100041287234" +
+                    "567896776987654327821000412872345678967769876543278210004128" +
+                    "723456789677698765432782100041287234567896776987654327821000" +
+                    "412872345678967769876543278210004128723456789677698765432782" +
+                    "100041287234567896776987654327821000412872345678967769876543" +
+                    "278210004128723456789677698765432782100041287234567896776987" +
+                    "654327821000412872345678967769876543278210004128723456789677" +
+                    "698765432782100041287234567896776987654327821000412872345678" +
+                    "967769876543278210006,uri:http://www.example.com/1.2.3.6.1.4" +
+                    ".1.11129.666.666.666.999.2/041287234567896776987654327821000" +
+                    "412872345678967769876543278210004128723456789677698765432782" +
+                    "100041287234567896776987654327821000412872345678967769876543" +
+                    "278210004128723456789677698765432782100041287234567896776987" +
+                    "654327821000412872345678967769876543278210004128723456789677" +
+                    "698765432782100041287234567896776987654327821000412872345678" +
+                    "967769876543278210004128723456789677698765432782100041287234" +
+                    "567896776987654327821000412872345678967769876543278210004128" +
+                    "723456789677698765432782100041287234567896776987654327821000" +
+                    "412872345678967769876543278210004128723456789677698765432782" +
+                    "100041287234567896776987654327821000412872345678967769876543" +
+                    "278210004128723456789677698765432782100041287234567896776987" +
+                    "654327821000412872345678967769876543278210004128723456789677" +
+                    "698765432782100041287234567896776987654327821000412872345678" +
+                    "967769876543278210004128723456789677698765432782100041287234" +
+                    "567896776987654327821000412872345678967769876543278210004128" +
+                    "723456789677698765432782100041287234567896776987654327821000" +
+                    "412872345678967769876543278210004128723456789677698765432782" +
+                    "100041287234567896776987654327821000412872345678967769876543" +
+                    "278210004128723456789677698765432782100041287234567896776987" +
+                    "654327821000412872345678967769876543278210004128723456789677" +
+                    "698765432782100041287234567896776987654327821000412872345678" +
+                    "967769876543278210004128723456789677698765432782100041287234" +
+                    "567896776987654327821000412872345678967769876543278210004128" +
+                    "723456789677698765432782100041287234567896776987654327821000" +
+                    "412872345678967769876543278210004128723456789677698765432782" +
+                    "10007,uri:http://www.example.com/1.2.3.6.1.4.1.11129.666.666" +
+                    ".666.999.2/0412872345678967769876543278210004128723456789677" +
+                    "698765432782100041287234567896776987654327821000412872345678" +
+                    "967769876543278210004128723456789677698765432782100041287234" +
+                    "567896776987654327821000412872345678967769876543278210004128" +
+                    "723456789677698765432782100041287234567896776987654327821000" +
+                    "412872345678967769876543278210004128723456789677698765432782" +
+                    "100041287234567896776987654327821000412872345678967769876543" +
+                    "278210004128723456789677698765432782100041287234567896776987" +
+                    "654327821000412872345678967769876543278210004128723456789677" +
+                    "698765432782100041287234567896776987654327821000412872345678" +
+                    "967769876543278210004128723456789677698765432782100041287234" +
+                    "567896776987654327821000412872345678967769876543278210004128" +
+                    "723456789677698765432782100041287234567896776987654327821000" +
+                    "412872345678967769876543278210004128723456789677698765432782" +
+                    "100041287234567896776987654327821000412872345678967769876543" +
+                    "278210004128723456789677698765432782100041287234567896776987" +
+                    "654327821000412872345678967769876543278210004128723456789677" +
+                    "698765432782100041287234567896776987654327821000412872345678" +
+                    "967769876543278210004128723456789677698765432782100041287234" +
+                    "567896776987654327821000412872345678967769876543278210004128" +
+                    "723456789677698765432782100041287234567896776987654327821000" +
+                    "412872345678967769876543278210004128723456789677698765432782" +
+                    "100041287234567896776987654327821000412872345678967769876543" +
+                    "278210004128723456789677698765432782100041287234567896776987" +
+                    "654327821000412872345678967769876543278210004128723456789677" +
+                    "6987654327821000412872345678967769876543278210008,uri:http:/" +
+                    "/www.example.com/1.2.3.6.1.4.1.11129.666.666.666.999.2/04128" +
+                    "723456789677698765432782100041287234567896776987654327821000" +
+                    "412872345678967769876543278210004128723456789677698765432782" +
+                    "100041287234567896776987654327821000412872345678967769876543" +
+                    "278210004128723456789677698765432782100041287234567896776987" +
+                    "654327821000412872345678967769876543278210004128723456789677" +
+                    "698765432782100041287234567896776987654327821000412872345678" +
+                    "967769876543278210004128723456789677698765432782100041287234" +
+                    "567896776987654327821000412872345678967769876543278210004128" +
+                    "723456789677698765432782100041287234567896776987654327821000" +
+                    "412872345678967769876543278210004128723456789677698765432782" +
+                    "100041287234567896776987654327821000412872345678967769876543" +
+                    "278210004128723456789677698765432782100041287234567896776987" +
+                    "654327821000412872345678967769876543278210004128723456789677" +
+                    "698765432782100041287234567896776987654327821000412872345678" +
+                    "967769876543278210004128723456789677698765432782100041287234" +
+                    "567896776987654327821000412872345678967769876543278210004128" +
+                    "723456789677698765432782100041287234567896776987654327821000" +
+                    "412872345678967769876543278210004128723456789677698765432782" +
+                    "100041287234567896776987654327821000412872345678967769876543" +
+                    "278210004128723456789677698765432782100041287234567896776987" +
+                    "654327821000412872345678967769876543278210004128723456789677" +
+                    "698765432782100041287234567896776987654327821000412872345678" +
+                    "967769876543278210004128723456789677698765432782100041287234" +
+                    "567896776987654327821000412872345678967769876543278210004128" +
+                    "723456789677698765432782100041287234567896776987654327821000" +
+                    "412872345678967769876543278210009,uri:http://www.example.com" +
+                    "/1.2.3.6.1.4.1.11129.666.666.666.999.2/041287234567896776987" +
+                    "654327821000412872345678967769876543278210004128723456789677" +
+                    "698765432782100041287234567896776987654327821000412872345678" +
+                    "967769876543278210004128723456789677698765432782100041287234" +
+                    "567896776987654327821000412872345678967769876543278210004128" +
+                    "723456789677698765432782100041287234567896776987654327821000" +
+                    "412872345678967769876543278210004128723456789677698765432782" +
+                    "100041287234567896776987654327821000412872345678967769876543" +
+                    "278210004128723456789677698765432782100041287234567896776987" +
+                    "654327821000412872345678967769876543278210004128723456789677" +
+                    "698765432782100041287234567896776987654327821000412872345678" +
+                    "967769876543278210004128723456789677698765432782100041287234" +
+                    "567896776987654327821000412872345678967769876543278210004128" +
+                    "723456789677698765432782100041287234567896776987654327821000" +
+                    "412872345678967769876543278210004128723456789677698765432782" +
+                    "100041287234567896776987654327821000412872345678967769876543" +
+                    "278210004128723456789677698765432782100041287234567896776987" +
+                    "654327821000412872345678967769876543278210004128723456789677" +
+                    "698765432782100041287234567896776987654327821000412872345678" +
+                    "967769876543278210004128723456789677698765432782100041287234" +
+                    "567896776987654327821000412872345678967769876543278210004128" +
+                    "723456789677698765432782100041287234567896776987654327821000" +
+                    "412872345678967769876543278210004128723456789677698765432782" +
+                    "100041287234567896776987654327821000412872345678967769876543" +
+                    "278210004128723456789677698765432782100041287234567896776987" +
+                    "654327821000412872345678967769876543278210004128723456789677" +
+                    "6987654327821000A";
+
+    // This is a Base64 encoded keystore containing our certificate.
+    // The keystore itself was produced with the command above, then its content
+    // base 64 encoded into the string below. The helper function to produce
+    // and format the string below are included in this file.
+    private static final String BASE64_CERT =
+                    "MIJR0AIBAzCCUYoGCSqGSIb3DQEHAaCCUXsEglF3MIJRczCCAyAGCSqGSIb3" +
+                    "DQEHAaCCAxEEggMNMIIDCTCCAwUGCyqGSIb3DQEMCgECoIICsjCCAq4wKAYK" +
+                    "KoZIhvcNAQwBAzAaBBSx1wdTxGqb9z4exOHVZNswvFL+oQICBAAEggKA7JdM" +
+                    "91kkP9QkG/igw2p+prxeEOQSmyScKMLtln81eKvT9zpvNjtT+hjABcH2QY8u" +
+                    "1Z3Ji48Umoaxi38Fk58/VazFM6wpL47VVNJ2EeTdj8sFoo8ExCH8EHJNNaVK" +
+                    "VNTG0YWOMa/HOPttl5wtD6pReGNOrVYVOnI2aY6zTqwI0sZS4uPczfb21vyI" +
+                    "NyF4B0Z9WGl77PRoGwrSeoLspISBTq6/JE8UhMWtuz7xnXw04DGp4DeIOO9n" +
+                    "E8+VBRKOELPqNaQ+VEgnwPNtPzjohi4Cwaf84c6vokAl1S/V6GzS0Al1mSGH" +
+                    "syAaszDYWcXXp2JpSXVAztySWZErwHE49/P42taXdhJvOSfqYb6FHpdrCXST" +
+                    "TPo+ULCGxQ83EGfnb/qaqAYZrS//+lzzqw18OY0JcF1i+cGHY8ofJK+bYr7x" +
+                    "ZyC8pLut84pEWNTp1V7SQcMif2Gd2SO2Y+ua4isjfMLNeNE/4puCV1vYsyiz" +
+                    "C9Gnp0Jywv13ioaC24Qy68uVQ81TvwizN3j7FxPCQOEEjXpfJ+5x2q0pUfqp" +
+                    "Roy7ow3Z+d+/fpMIcgyMqWidzLBChRkx4Ugnh7rYBfY1ghchlu8WIIhiR/8p" +
+                    "EBX5WQHyEtwrXOFiWxT+QwXWjbs9dQSUoCU1i2zwCFW9R8FkY2yb98QxF74z" +
+                    "0TpyW+w6cGPUNUd2T143PL4eGt4rGUBUMewe2ENSgZCDstvtiNPfccW8f9tq" +
+                    "G49pHBZt1ZIadM/DbCk1cqDD3u2/e7c57mInFkBBJKjl2K7GK9EYsiey+3Fk" +
+                    "NvkxbaF+89OTqEDPP4E97EeHkk/MFe0bQ/a/aXZrTPSN7mNgusWBQyztnYex" +
+                    "BRr8sPRhNDFAMBsGCSqGSIb3DQEJFDEOHgwAcwBlAHIAdgBlAHIwIQYJKoZI" +
+                    "hvcNAQkVMRQEElRpbWUgMTU2OTk1MzczODEyNzCCTksGCSqGSIb3DQEHBqCC" +
+                    "Tjwwgk44AgEAMIJOMQYJKoZIhvcNAQcBMCgGCiqGSIb3DQEMAQYwGgQUBIoZ" +
+                    "0r5Kc2cs6fHseA1vKWpQi30CAgQAgIJN+Lch8gN0kyMcpdNDM2iAfBHd/kXZ" +
+                    "4ye8lmGvvV0Yy9dd4Q6zmOmkPjWcusyh/vJdya8OG8Fxc/nQmyhB441qtJR5" +
+                    "dwIQe/7lft2gDg2sBD0osPvEHesvFVr0+2cy22sdBXS4ihdtVTciPV+4v0EU" +
+                    "AK6Lcib57Ml7MI6VhBGpWLkaZXv/25CqXGaiY85dSXPHMugvfJn8JoNxe+tN" +
+                    "PDEAy5ar5bnSD9Xl8GyQwHFwQ1P+gEjwg0+hC6OQA6Eg0jBFhIL+dCf6FJwz" +
+                    "J2HekpKXcyCTNTx0HB8AW3u4gVjao0B7oNr0GZprpPgYp4dl04Tar6fmb9MN" +
+                    "w4MWkcySjX0wCNjpvE0bWlUx55jlN+25SWNEafmbzRNECW1hT6Xl3HLLNQQv" +
+                    "8fIgkd2200+Ppwk+cG2dYMrl0MpHPxOo2l+nLNDI+a84v6R2Mqf3qVNfcRxZ" +
+                    "Xmw0kJ1JNUKhd0Dy6FKB7tY1Gwc4rfQQgdUXTlnB96rUrSK2o91QZZ9rN3PD" +
+                    "SbbQRzSBSPMDen+W5878kwd1BkDH1ao7qOHoGYYiYxczkMVncOtOIdg8VScU" +
+                    "t/N1NS9Yrzlj0aAYwX5EYmYzFMiyXr+El/7VnrLHBiaYwJaYVw7a1HgkSXxb" +
+                    "er/vgM639AIhT5ab9NFF+ib+7qwbWPzggIBtfm1bXiRPE6Ue0+aQ9g4vYSR7" +
+                    "QNusu/2Kwyrd6cwqJnQnG53wiSXh3hs7dvNRYpM16iF1dTeud0FSpQx1tMFi" +
+                    "Wp9cGwtUSzvLw1+5Mvz7igLTNAPyTMFNAYFR7JZgRjg1035Y7Xo4aXNMVtGp" +
+                    "BCa+/eJzE33CHH2+kuSa13N6qHA2Ek33aR4Vi7P/QOI1aghsR6tL62ctoq4c" +
+                    "FmRwvReYGdFK08+B2auPHOEPdGaPefydmPNnFLDguH6d2NYIH8cgzpjz48Gf" +
+                    "i5UQfh/UJAxricLjuV2eor7gZCCaC9MfnLlHnDH5MYUQgDsGBTRxh6rpZxVo" +
+                    "PFUm1DQCFdDHgmvVz+GAuiVzUu0TrUAxBeycl9lrDshgZj2jd9FU7XcMFwzC" +
+                    "dMsWJaA8EC8u31vnpWWqK8C03pdXTbWOEJdIDMXKOzd2ZxjGPnBSNXNRsGzi" +
+                    "RdEspHElrfGwHA5Vpsj4Q6tMZ8tZ+gSSmBrKP6xNUDNwi1bPayJw/dAKaC+D" +
+                    "vp5sx/+nZcxSF/ig8ZM6aA3escS1GBNBWFrx2vEASHNpHZsTIOTuOM4e584/" +
+                    "NJpNlRfaTzJ3i9/XoufnHbT5pmpZgxlZckYto3h6lL8R0bXthICRrI37Oh6s" +
+                    "yfO7zhMiGoNdaFAnXTsMzA+Uwr1gesHWE9Rbd+jrkcGgL4Zst/A/c64F58qt" +
+                    "J2RzA3xJCGQ6AXB3SlDHLObuYZ48TH4v2nJ4S8RTs/ant/T9DTRJyhQMa9+P" +
+                    "QC8Ny1ejFOK71Oqjz7J2jGpoBm3gDRZDYeBa6ZiMeJf8Q+bkpbEgUQbdiXhn" +
+                    "dpN7acdJTSHnO5/3Y4G1T6kLNzKc1+NYiYwH9Y6KIMa9IaocOA4wCHEFog7Z" +
+                    "Ac6vFv6r9/cnXEIe9/t5gYLL7X/gU6HMqZFjM0QjRru/Sy9vYfpytqrnOf/q" +
+                    "eOTJ9gRdIn7jNVTrgrE3ZgNvxYapaDMyFG/ixZV0cblsVJ6JO4MArOQq6q9/" +
+                    "LWGtYYEDclyLNxUTYf0gHmVRhYV8rlyMKXtDu0aBOOn13dRxKKVN5pG+LrKe" +
+                    "V+FZ3tDhYiFBxI/gkAiegSQlvknJlbEuanCWFq7sHOZ3C76L5G4qtRv7tHAs" +
+                    "8rtqzhYnddxIkTcj4tkVYsFxkj1afSuLSSoYqc0jYZUXHkL+5U0ZRxhJbo6b" +
+                    "/QVtiGXbS9i1em3+Yr47jHRH7f5Crlc2EdEzZaIm8tCw5G3CddXhhCpQTT3r" +
+                    "Mjwep5/w2ai8qbGC1xo6AV7ZyQS535UbIhOYMPO7vd3oUBmQXyutSxx8Wedx" +
+                    "HbIlBdZ44JlRWELdL6Ejo7PwhG0F3Zd3+FtasM13teYlbDWdFeoTF+inrXCG" +
+                    "BCSqoUDYLAAxRK7oYKSDqfrcRioHO4AkeaF8x5YZpRSM73yawZaWeLVq1NKb" +
+                    "DdeSJEjqDs5Ve6cA/jSLDtlJqudspFamzkdUWa4L1Tc15JY2YD8urNz/qXUK" +
+                    "E74H2MtQWjrQ8Yjz7y+3yUTYd8Clp1dBKV2haIr+sCTnFtUXaQ9LZF5S+enU" +
+                    "mOf7OmdFObwvV1f43HDuDSiFZpE+w57YmAgSIfWelKnGvvn1lBBWBomyVBKo" +
+                    "69seibaSyUXyuq8q3525ZKpHIcic7doYOYgqU94HBQOwkwTtoiX3tKX4EgDa" +
+                    "9AjYD4LHITkwgKzsQAe+3ASKq3SPFXi/UbYuZNXdkXgh7kqL6PZPD6ayIxOW" +
+                    "f8E95fZRXPyNbKf5U9pp9hVKeuOPKbEYKsQNG0ZiephMmV3S6JjSqLo+qTU+" +
+                    "QyGH3vhwlhda9cmxrpKCy0KM8AHyWoS4L5TAiJXp6moCttP0v8P/RRFtBePl" +
+                    "53nyLwZ5SyXv4ifVayJyyeDXn08In9MINLRyjvNF2gHbHI7XbeQKqB3yIBC9" +
+                    "sKpyShX6UKb1Dnd3Z19rT4a7QUkqfcodX9cU7tV6ncRuP5ZJRLHQQi9w/2DI" +
+                    "Leu8Y43jJ/CWYo8Fb8IXHrWA/hwNT28Yr3OcZUIDFdbdxenTKyhMlDOQ87aU" +
+                    "VXBCnq96jEAzY0NY3PZj+CBvts2wlCJJDhBCVTXM9OusZjH2/B6phWO7ybMq" +
+                    "15QqYyypNM62oBlu82psklHRREO1D23MaOyoXSHYVFxvLMKxhstK3wd59cst" +
+                    "8V/uvzzrURJu85X1X0cQJaKB+OjvBT8n8e9jzjATOTiGH2ULLSro2wc7Ne1r" +
+                    "bEK4qHeuSwlvulvcqB7wK84PItmVOW+g9VuXA9QGGHxzybbs+/QaMqJzdN6C" +
+                    "oS1Az5UmvZbdnSAuXtW8xiKJ+ELAGCjOcdkzQaAbd8Tq5hUXAgYeNQnoDjJz" +
+                    "+a8CTk1IaGkeHlg7MrV98AuIQjUB16IU6gE4MH6ueOIZhF3PB2Fp0dGPXL6O" +
+                    "KzIiC3jM7rIuTmOstI/t+XB3+BYxKvLuQhbV5n8sUBsGFFGBKoxIZawKG1Pk" +
+                    "3Dny2rzcB2JkcOO8r6f0dA5V4PKIrhmVeQJyHgY+/fF+JMZxfjYmaSrwu/1R" +
+                    "JnlDfDCIwNon7smi8QwXbEvRehI5a883yI07COM1paHBKNddlw4sfkfbIrNx" +
+                    "LQJLb0mHgqvHAblivBmMuaiZaK0MVOgZTe4bYuYdRSN8/ueZDHOo7lyfXGzc" +
+                    "8FEThaiGp5m/uWYJgG2FIRxM6by9PhusaTZgJ8DmjRLF5yDuR14gau6zj7GZ" +
+                    "TMXGDIDTRWTKTP0/DYF+EEnuWJb2JrrxMnWH8X7xXhrRA6Ku3nqVEwy8eUnR" +
+                    "WtLAQkApLOEhsp3wQyLRbaydcD1Si9s5JICy/m5Sv2NXseKbmAHDphTYuSGr" +
+                    "Gjk5ryTEaaiULVvi7mv1HqDq3fli/PAzMIcsK0yaF9rQv7JjtsOtZtr77+zs" +
+                    "vM8CSY835WpqTtjGDC+HWHulEADgS4ShpIrn3zgyEd1jrRY6rR5ZDuioc7sE" +
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+                    "9Za/9vrvP72UlQ4+z6yUg0RNwlHgWN2nF0xnTQZXySXaoAaqwGA8HetCbx7s" +
+                    "ePd+VFl1/gApyxeGhWFTf0d3YiBLRCqvdFCsKrC/ni7aIGgbpuvjxmHiTAKa" +
+                    "Jaick9xE7a13b2pY557OVq6ExqRiC3c28z4YuKXfJf6IIeBug1HY9yEnjU37" +
+                    "eqNJL/XbyImo55ARAH61MwL1RSqu7uWJDui4GKCOKC+piqOwLDjSx8AyRVN8" +
+                    "zbsTxKtN0N0AUBqstlxgrfbV3/BCqKSQHCaqlg0Nrzk0T53RZEHyNv16qtr2" +
+                    "iF45GMDj3k/lP/NLU4DQX3R0zx1dQirSfUr0PJGxZdwnfHFzSZ7o5YaAnqdW" +
+                    "j8t4DGsu5wdktDOfqRsXrX3eKmeps5ycRBKTUgPhoccH+PFtMXYjkTH49aW4" +
+                    "hKgnJd5I49A5o/Vdd5Z3zNFF7eSUsMFA6pYxXOy4/wQYpu8vqmYBs5p/WBM3" +
+                    "wJkp0iLaEsEvJGSRNjbyuhV+N16GamJVIQVk0X2HvzKVtL1cHHN2f9BkFbFC" +
+                    "R2iW/I0ZFz/OECDOnlS1Ea/jGXuEIOB2+4O/Fki7kQ1opkc5pB5ehMMCetXP" +
+                    "cPJrEyyQJXsG0ZiCmr9RtGoEKG6lfvNxFWBtXHjXrFXjZ/KRZi7BS6ZPIRb+" +
+                    "YER6V8tyLNkL86xTjkm1oq9+opihDSf2+dve/u3YFooowsleeNynMVEyEPo2" +
+                    "yOLB8FO/l60qpSOSrepG6kS37ifjrv1piMyqLxz9EWP33jG0ajCEj1hAoke2" +
+                    "5uLFL0xaYT5Hbb3SPD6E5Kwm3GrP53VMGpzxFb3WirP2iW1pSLH5ZwBSiiJa" +
+                    "awGW/1JAZ/AemOroG1jpFXYG30euz9cj1ha97GagqGgaklIQGbGejqj1lu7/" +
+                    "H8Uu47sdFxrQTbs0enJEr7iZdOWHb/Gk1u6X2+1d1+2ifn5k4dd2QrKi4lKZ" +
+                    "TnzU6InfbE6wl7kblSGnvxG5CdMs6vfcs1VQHbahPxyZ1ci7h3Yda6MV1xNv" +
+                    "8gru+cCbr/x6v0L0L0rjSg2ZwFq+UCexc8t7ONv6y6KhjbUgGmy15GthHqYQ" +
+                    "/wFMIeobeq7yd04vUMhsvSxfXL54RECwu0Wz9OXfPU8yGdLiUqGDlVM/lrCF" +
+                    "H7zdSU+XKqOoxA/Wb8zayXZehYRQqnDVlJzA39Sp4KtPQdIapZ42ViJ8SWXI" +
+                    "sgtztW588KRMxjtMxpIj5eKucFr9bqfYsaYU74t3JQUIeWrKMEGlftBrT5Tn" +
+                    "BIPhOlTSMWe3pWOkJP76uUm/mqrz/LirLgzKrMpsw32eUSQsizWwXnC2a9pf" +
+                    "VQcqDIQBgIRxI6bp4U4IQIhCezOhZe+02pt/R6el4fvDyhGh2sjcUyt50XHa" +
+                    "tobMMkNVoQTWm1UUJpRB5n0CbtXDRkB54kL7IYlhsZVBYQqDMihNbTvcGfUE" +
+                    "tz+Yw405OdLawX5VpV4azSeXxncq4LlHgE23JKIpZjnQ/ueb8c/6EUyfn1u7" +
+                    "4+lGsqIK87fwPrGP6tgozyo8e+uzYl2wIKjL3p1ypi9IJodtMtQJT4Aw/Nyk" +
+                    "d+fB2zS7h54vyh9XJBqXBlyBJTDoevGxACfCZMOagdR4kmysiWUEqcaPSslx" +
+                    "9is9VTALHRpN7LeKyTnPnMzFb1otJ+tYncqtvaP0I8hRgtWHsbiBqpjDUZxF" +
+                    "nOXaXzbuYdEV2rzcQ9msOCqejRctklNVGwrFdqEKUeOV4QwwGJv6wb6rRYaB" +
+                    "qXB0/8CEkoNYOC/VU668RDOkwTFd12w/9TOgr88DHX0dN0OHLKa7/xzNji1k" +
+                    "OVkQcT+Bcrqr2pUWkic30U+YU7mJSC49tssKTROJ6SM6m25jou/0YuuYTge0" +
+                    "S/bn+Th6Y7YJ79eqvmG2OneqcCwE+SzpehGo/LeROeBH5w3rGTcl2qcxvRf1" +
+                    "SyyJ5aGlh6fseWgcO1NW2oLr+ih6JCpDf4vRcYjdaZysmzB9y5kLOY3rPQbI" +
+                    "OxqaO1KshMb3fGJIcK53lZBqHQfqQ7CgeYotq2OGUmKzr2BVmkah+YIMUrRE" +
+                    "xVGSlMzJyDABEE5cTBvcmq8MJvTdFeQrOHkAHJ4Y10v0rb01hGkvJbSUq5a9" +
+                    "B7f7ulZPnYpWmJZ8iDPs2eETUH/fm/a+B1i2kb7QCs50zGfp6grwmwMb7fd2" +
+                    "DEOkjXS6VEOfnzS4jlNhBfGRD0GORIjRCI2arB1hjQvthLU14Q03ZetymTXE" +
+                    "dMml0i+t7wNhESkAMwvfqkPrG72sg32w8yCKh9zE7YATcElTAobdxR9aU8ei" +
+                    "ulXgMb/PnC15/SZTvGzK4E5FGjRbRYx0ZJsQYpdzx4D0L/Yx0BEODfIdbXDV" +
+                    "kSRMtltmWx+88xlqzN28I43ezoe/8rU7WzQvJLs/9N7Ud9JS6H2pHJxqGYQs" +
+                    "3Sk32tnWjIk57PXk/++6IwsGonmalUSP53cILKDerkkj8LkOtbCSdmQu5uTb" +
+                    "dXdxM6Yo6nHStyJyHZUz52qDbZruVnBLS2HXjG0LOBNSU80jbkNzJ9+uSr81" +
+                    "bsHaUlIsq7Wksrv1pfNIz8ieisEJnk3FE6nitwh6w5RYF7Kl21a1vEPQUipZ" +
+                    "hfPBLGel0lBmBb36va4ge0nketjV01j4lBStIg5c6c+V00gwsu3/Aj+EaMy8" +
+                    "jDW1nle5f1wG6KQxAqLo78BIOojlyQjR1rAbPS+rvxTjirQ60LEPeyEnljmG" +
+                    "xVnGGliSrnlRuI5KAkQxLCUEQTTFy3Dj+1NAUkx4Xoi7ARsfvj0L7T36wq0Y" +
+                    "+aFViAoYfBXqNqf5vLbXo8hcKIkfvUf5b90ivNPnQx/nUH6LsSaDAUEpR3CR" +
+                    "8c3iNn7BURwoIjtAz3NfEgsQRYbyQIb4hgCODp2tnhl+GK1bKvkgnbRoxyCJ" +
+                    "XsK6Ka9lLK6TGP2AG7zdJIBBvWF4yCsNdF06qYuN32L0t4OOP6cRMowDchoY" +
+                    "vwXr9KWAvAc4Kq3KnwwUDPTISLp33n9LFItdgZNZeMjZ3hi7mSisMB4lK0lX" +
+                    "L4T3G/GNH+sYKgS17BRU1Dw/Bmt9LGOmQIFLsKErqIV+cXsBLlNiuC5lzl5Q" +
+                    "W3DTNJhErd3vaecEAJJlTfSjSQ9PLy7nDLv/RjzVKNgXSerqfuiM05McEm40" +
+                    "g6jQDRalN1alU8Cz3GLRjsfNGdYTsh/jPD4+ZiEqnCJo7VMxs+kb38etoTlz" +
+                    "Zs3hoJKH3euds2uSSGn1yPYb7J4QkG0toLIydkwAvMMdIhwQ1VN6bU8cYGax" +
+                    "FtmaugxN+n+00lb2Rbpdp+yVchdeNx1Yal30XPugP7x1OrVAZw5InTNCU9zQ" +
+                    "Fx8ria6g4+t1GgwBqmPi1noSHHG3bThI74oBTsg3L4esRW27OMrTTzYVNemt" +
+                    "dvJXN8yedTY2rVqwbKJO7bGR2VcDDn8ZgoaPBIvQuLSRBIdbUSIeKuLiuHbK" +
+                    "IbkwtZTyz7LvrE1SZ0oDpMf19pb9fZPi3v7yQpFLx0oqqSYdhrJyOfhNVZXU" +
+                    "dc4vbE0qez8MX9PNmyMtt4yktA+FC+2FM4P9jjdvaIfdm2Q7NhxjffvuwBJW" +
+                    "SIoHBSEmxfxZgGCo29pOy2TZt/VpU8zpGpRBaqx0F9L2YzRJgwgOTYbkhF4w" +
+                    "w1w03jCk3UWEg1Eq6kr6ZOEY3Us8DLTnx1RGKeGEpJ/vqtKzX1+KJS1t4E5G" +
+                    "3eqa7WUqcyNqII/9ShMZqdfmXj1llgfuD+31HjDXXVO8RFY2zG/OneMkJJP2" +
+                    "WfCs+IyN0I1+u/UJVMVW1d9y09nbrjruXSjvI2NwALB8NgtTHYbu3aLi0c02" +
+                    "ijIB19xcNdSjwsmpR87lp9VFqIGEPVcYb+E11OODliUPNRPig6kPcbzGGq4b" +
+                    "2CmbVVjPURU0U5cXJv0jqxGl8C7AsDIaJkXwGvQlp0t2wL/Wl66mAqBCQmJO" +
+                    "Uw3A7/NbqGbhky8r4XMBBk0bOBn2jUIXyfJG696QPR27NrMshZRFG8fKmRfm" +
+                    "4inNQQtcu6uUOKcoppeghWHBkK134LCFJakVrgmo0QeUXvdlR79imF9iyFDc" +
+                    "Z6Fayr5Mh0RiDS0DtI4E4k17OVTjPYenflXCSk5VDCN8kM8d34wQEX2lahR2" +
+                    "oWTBvJAFrvMqBL3zjnzjnNavoVaMlJy/Ezjrr+vNraCbNSY69Icflfb0xUEa" +
+                    "RsdADuCKDVXoAavcUKw9aXBTolmHvquBBnUsyi630i2mONUg7ylqJCvCTCGk" +
+                    "EDq48TofcRnuafZt38iwv5PRmRkhnMSGLR3L5AxjCAnSAUvqKPytH4QQ7+PJ" +
+                    "NHc5qetzZdz+jRkCdCnC5YonOWyzi5I20U3Cdl7pL7Ev5INyk8knQLY2a88f" +
+                    "9cUiV5kwPTAhMAkGBSsOAwIaBQAEFM74e0Rbt2IGCAn48XjvdAcaIl6cBBSY" +
+                    "pFDCs7BGKfo6O4hW9fB0/2HXqwICBAA=";
+
+    // You can use this method to print the java code for the BASE64_CERT
+    // constant. It will open the keystore file provided as argument and
+    // it will Base64 encode its content - then print the code that you can
+    // cut and paste back in this test.
+    private static final String encodeKeyStoreToBase64(String keystorePath) throws IOException {
+        // e.g.: keystorePath="temp0.jks"
+        try (FileInputStream fis = new FileInputStream(keystorePath)) {
+            byte[] bytes = fis.readAllBytes();
+            String encoded = Base64.getEncoder().encodeToString(bytes);
+            format("BASE64_CERT", encoded);
+            return encoded;
+        }
+    }
+
+    private static void format(String name, String value) {
+        System.out.println("private static final String " + name + " =");
+        int start = 0, end = 60;
+        while (start < value.length() - 1 && end < value.length()) {
+            System.out.print("        \"");
+            System.out.print(value.substring(start, end)
+                    .replace("\"", "\\\""));
+            System.out.println("\" +");
+            start = end;
+            end += 60;
+        }
+        if (end > value.length()) end = value.length();
+        System.out.print("        \"");
+        System.out.print(value.substring(start, end));
+        System.out.println("\";");
+    }
+
+    private static SSLContext createSSLContext(InputStream i) {
+        try {
+            char[] passphrase = "passphrase".toCharArray();
+            KeyStore ks = KeyStore.getInstance("PKCS12");
+            ks.load(i, passphrase);
+
+            KeyManagerFactory kmf = KeyManagerFactory.getInstance("PKIX");
+            kmf.init(ks, passphrase);
+
+            TrustManagerFactory tmf = TrustManagerFactory.getInstance("PKIX");
+            tmf.init(ks);
+
+            SSLContext ssl = SSLContext.getInstance("TLS");
+            ssl.init(kmf.getKeyManagers(), tmf.getTrustManagers(), null);
+            return ssl;
+        } catch (KeyManagementException | KeyStoreException |
+                UnrecoverableKeyException | CertificateException |
+                NoSuchAlgorithmException e) {
+            throw new RuntimeException(e.getMessage());
+        } catch (IOException io) {
+            throw new UncheckedIOException(io);
+        }
+    }
+
+    static final byte[] DATA;
+
+    static {
+        DATA = new byte[1024];
+        int len = 'z' - 'a';
+        for (int i = 0; i < DATA.length; i++) {
+            DATA[i] = (byte) ('a' + (i % len));
+        }
+    }
+
+    final SSLContext context;
+    final AtomicLong requestCounter = new AtomicLong();
+    final AtomicLong responseCounter = new AtomicLong();
+    HttpTestServer http1Server;
+    HttpTestServer http2Server;
+    HttpTestServer https1Server;
+    HttpTestServer https2Server;
+    DigestEchoServer.TunnelingProxy proxy;
+
+    URI http1URI;
+    URI https1URI;
+    URI http2URI;
+    URI https2URI;
+    InetSocketAddress proxyAddress;
+    ProxySelector proxySelector;
+    HttpClient client;
+    List<CompletableFuture<?>> futures = new CopyOnWriteArrayList<>();
+    Set<URI> pending = new CopyOnWriteArraySet<>();
+
+    final ExecutorService executor = new ThreadPoolExecutor(12, 60, 10,
+            TimeUnit.SECONDS, new LinkedBlockingQueue<>());
+    final ExecutorService clientexec = new ThreadPoolExecutor(6, 12, 1,
+            TimeUnit.SECONDS, new LinkedBlockingQueue<>());
+
+    LargeHandshakeTest(String cert) {
+        byte[] decoded = Base64.getDecoder().decode(BASE64_CERT);
+        context = createSSLContext(new ByteArrayInputStream(decoded));
+        SSLContext.setDefault(context);
+    }
+
+    public HttpClient newHttpClient(ProxySelector ps) {
+        HttpClient.Builder builder = HttpClient
+                .newBuilder()
+                .sslContext(context)
+                .executor(clientexec)
+                .proxy(ps);
+        return builder.build();
+    }
+
+    public void setUp() throws Exception {
+        try {
+            InetSocketAddress sa = new InetSocketAddress(InetAddress.getLoopbackAddress(), 0);
+
+            // HTTP/1.1
+            HttpServer server1 = HttpServer.create(sa, 0);
+            server1.setExecutor(executor);
+            http1Server = HttpTestServer.of(server1);
+            http1Server.addHandler(new HttpTestLargeHandler(), "/LargeHandshakeTest/http1/");
+            http1Server.start();
+            http1URI = new URI("http://" + http1Server.serverAuthority() + "/LargeHandshakeTest/http1/");
+
+
+            // HTTPS/1.1
+            HttpsServer sserver1 = HttpsServer.create(sa, 100);
+            sserver1.setExecutor(executor);
+            sserver1.setHttpsConfigurator(new HttpsConfigurator(context));
+            https1Server = HttpTestServer.of(sserver1);
+            https1Server.addHandler(new HttpTestLargeHandler(), "/LargeHandshakeTest/https1/");
+            https1Server.start();
+            https1URI = new URI("https://" + https1Server.serverAuthority() + "/LargeHandshakeTest/https1/");
+
+            // HTTP/2.0
+            http2Server = HttpTestServer.of(
+                    new Http2TestServer("localhost", false, 0));
+            http2Server.addHandler(new HttpTestLargeHandler(), "/LargeHandshakeTest/http2/");
+            http2Server.start();
+            http2URI = new URI("http://" + http2Server.serverAuthority() + "/LargeHandshakeTest/http2/");
+
+            // HTTPS/2.0
+            https2Server = HttpTestServer.of(
+                    new Http2TestServer("localhost", true, 0));
+            https2Server.addHandler(new HttpTestLargeHandler(), "/LargeHandshakeTest/https2/");
+            https2Server.start();
+            https2URI = new URI("https://" + https2Server.serverAuthority() + "/LargeHandshakeTest/https2/");
+
+            proxy = DigestEchoServer.createHttpsProxyTunnel(
+                    DigestEchoServer.HttpAuthSchemeType.NONE);
+            proxyAddress = proxy.getProxyAddress();
+            proxySelector = new HttpProxySelector(proxyAddress);
+            client = newHttpClient(proxySelector);
+            System.out.println("Setup: done");
+        } catch (Exception x) {
+            tearDown();
+            throw x;
+        } catch (Error e) {
+            tearDown();
+            throw e;
+        }
+    }
+
+    public static void main(String[] args) throws Exception {
+        System.out.print("The certificate used in this test was generated " +
+                "with the following command:\n\t");
+        System.out.println(COMMAND);
+        String cert;
+        if (args.length == 1) {
+            String storeFile = args[0];
+            System.out.println("Parsing jks file: " + storeFile);
+            format("COMMAND", COMMAND);
+            cert = encodeKeyStoreToBase64(storeFile);
+        } else {
+            cert = BASE64_CERT;
+        }
+        LargeHandshakeTest test = new LargeHandshakeTest(cert);
+
+        test.setUp();
+        long start = System.nanoTime();
+        try {
+            test.run(args);
+        } finally {
+            try {
+                long elapsed = System.nanoTime() - start;
+                System.out.println("*** Elapsed: " + Duration.ofNanos(elapsed));
+            } finally {
+                test.tearDown();
+            }
+        }
+    }
+
+    public void run(String... args) throws Exception {
+        List<URI> serverURIs = List.of(http1URI, http2URI, https1URI, https2URI);
+        for (int i = 0; i < 5; i++) {
+            for (URI base : serverURIs) {
+                if (base.getScheme().equalsIgnoreCase("https")) {
+                    URI proxy = i % 1 == 0 ? base.resolve(URI.create("proxy/foo?n=" + requestCounter.incrementAndGet()))
+                            : base.resolve(URI.create("direct/foo?n=" + requestCounter.incrementAndGet()));
+                    test(proxy);
+                }
+            }
+            for (URI base : serverURIs) {
+                URI direct = base.resolve(URI.create("direct/foo?n=" + requestCounter.incrementAndGet()));
+                test(direct);
+            }
+        }
+        CompletableFuture.allOf(futures.toArray(new CompletableFuture[0])).join();
+    }
+
+    public void test(URI uri) throws Exception {
+        System.out.println("Testing with " + uri);
+        pending.add(uri);
+        HttpRequest request = HttpRequest.newBuilder(uri).build();
+        CompletableFuture<HttpResponse<String>> resp =
+                client.sendAsync(request, HttpResponse.BodyHandlers.ofString())
+                        .whenComplete((r, t) -> this.requestCompleted(request, r, t));
+        futures.add(resp);
+    }
+
+    private void requestCompleted(HttpRequest request, HttpResponse<?> r, Throwable t) {
+        responseCounter.incrementAndGet();
+        pending.remove(request.uri());
+        System.out.println(request + " -> " + (t == null ? r : t)
+                + " [still pending: " + (requestCounter.get() - responseCounter.get()) + "]");
+        if (pending.size() < 10 && requestCounter.get() > 10) {
+            pending.forEach(u -> System.out.println("\tpending: " + u));
+        }
+    }
+
+    public void tearDown() {
+        proxy = stop(proxy, DigestEchoServer.TunnelingProxy::stop);
+        http1Server = stop(http1Server, HttpTestServer::stop);
+        https1Server = stop(https1Server, HttpTestServer::stop);
+        http2Server = stop(http2Server, HttpTestServer::stop);
+        https2Server = stop(https2Server, HttpTestServer::stop);
+        client = null;
+        try {
+            executor.awaitTermination(2000, TimeUnit.MILLISECONDS);
+        } catch (Throwable x) {
+        } finally {
+            executor.shutdownNow();
+        }
+        try {
+            clientexec.awaitTermination(2000, TimeUnit.MILLISECONDS);
+        } catch (Throwable x) {
+        } finally {
+            clientexec.shutdownNow();
+        }
+        System.out.println("Teardown: done");
+    }
+
+    private interface Stoppable<T> {
+        public void stop(T service) throws Exception;
+    }
+
+    static <T> T stop(T service, Stoppable<T> stop) {
+        try {
+            if (service != null) stop.stop(service);
+        } catch (Throwable x) {
+        }
+        ;
+        return null;
+    }
+
+    static class HttpProxySelector extends ProxySelector {
+        private static final List<Proxy> NO_PROXY = List.of(Proxy.NO_PROXY);
+        private final List<Proxy> proxyList;
+
+        HttpProxySelector(InetSocketAddress proxyAddress) {
+            proxyList = List.of(new Proxy(Proxy.Type.HTTP, proxyAddress));
+        }
+
+        @Override
+        public List<Proxy> select(URI uri) {
+            // our proxy only supports tunneling
+            if (uri.getScheme().equalsIgnoreCase("https")) {
+                if (uri.getPath().contains("/proxy/")) {
+                    return proxyList;
+                }
+            }
+            return NO_PROXY;
+        }
+
+        @Override
+        public void connectFailed(URI uri, SocketAddress sa, IOException ioe) {
+            System.err.println("Connection to proxy failed: " + ioe);
+            System.err.println("Proxy: " + sa);
+            System.err.println("\tURI: " + uri);
+            ioe.printStackTrace();
+        }
+    }
+
+    public static class HttpTestLargeHandler implements HttpTestHandler {
+        @Override
+        public void handle(HttpTestExchange t) throws IOException {
+            try (InputStream is = t.getRequestBody();
+                 OutputStream os = t.getResponseBody()) {
+                byte[] bytes = is.readAllBytes();
+                assert bytes.length == 0;
+                URI u = t.getRequestURI();
+                long responseID = Long.parseLong(u.getQuery().substring(2));
+                System.out.println("Server " + t.getRequestURI() + " sending response " + responseID);
+                t.sendResponseHeaders(200, DATA.length * 3);
+                for (int i = 0; i < 3; i++) {
+                    os.write(DATA);
+                }
+                System.out.println("\tresp:" + responseID + ": done");
+            }
+        }
+    }
+}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/jdk/java/net/httpclient/LargeResponseTest.java	Wed Oct 23 14:01:17 2019 -0400
@@ -0,0 +1,305 @@
+/*
+ * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+import com.sun.net.httpserver.HttpServer;
+import com.sun.net.httpserver.HttpsConfigurator;
+import com.sun.net.httpserver.HttpsServer;
+import jdk.test.lib.net.SimpleSSLContext;
+
+import javax.net.ssl.SSLContext;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.net.InetAddress;
+import java.net.InetSocketAddress;
+import java.net.Proxy;
+import java.net.ProxySelector;
+import java.net.SocketAddress;
+import java.net.URI;
+import java.net.http.HttpClient;
+import java.net.http.HttpRequest;
+import java.net.http.HttpResponse;
+import java.nio.charset.StandardCharsets;
+import java.time.Duration;
+import java.util.List;
+import java.util.Set;
+import java.util.concurrent.CompletableFuture;
+import java.util.concurrent.CopyOnWriteArrayList;
+import java.util.concurrent.CopyOnWriteArraySet;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.LinkedBlockingQueue;
+import java.util.concurrent.ThreadPoolExecutor;
+import java.util.concurrent.TimeUnit;
+import java.util.concurrent.atomic.AtomicLong;
+
+/**
+ * @test
+ * @bug 8231449
+ * @summary This test verifies that the HttpClient works correctly when the server
+ *          sends large amount of data. Note that this test will pass even without
+ *          the fix for JDK-8231449, which is unfortunate.
+ * @library /test/lib http2/server
+ * @build jdk.test.lib.net.SimpleSSLContext HttpServerAdapters DigestEchoServer LargeResponseTest
+ * @modules java.net.http/jdk.internal.net.http.common
+ *          java.net.http/jdk.internal.net.http.frame
+ *          java.net.http/jdk.internal.net.http.hpack
+ *          java.logging
+ *          java.base/sun.net.www.http
+ *          java.base/sun.net.www
+ *          java.base/sun.net
+ * @run main/othervm -Dtest.requiresHost=true
+ *                   -Djdk.httpclient.HttpClient.log=headers
+ *                   -Djdk.internal.httpclient.debug=true
+ *                   LargeResponseTest
+ *
+ */
+public class LargeResponseTest implements HttpServerAdapters {
+    static final byte[] DATA;
+    static {
+        DATA = new byte[64 * 1024];
+        int len = 'z' - 'a';
+        for (int i=0; i < DATA.length; i++) {
+            DATA[i] = (byte) ('a' + (i % len));
+        }
+    }
+
+    static final SSLContext context;
+    static {
+        try {
+            context = new SimpleSSLContext().get();
+            SSLContext.setDefault(context);
+        } catch (Exception x) {
+            throw new ExceptionInInitializerError(x);
+        }
+    }
+
+    final AtomicLong requestCounter = new AtomicLong();
+    final AtomicLong responseCounter = new AtomicLong();
+    HttpTestServer http1Server;
+    HttpTestServer http2Server;
+    HttpTestServer https1Server;
+    HttpTestServer https2Server;
+    DigestEchoServer.TunnelingProxy proxy;
+
+    URI http1URI;
+    URI https1URI;
+    URI http2URI;
+    URI https2URI;
+    InetSocketAddress proxyAddress;
+    ProxySelector proxySelector;
+    HttpClient client;
+    List<CompletableFuture<?>>  futures = new CopyOnWriteArrayList<>();
+    Set<URI> pending = new CopyOnWriteArraySet<>();
+
+    final ExecutorService executor = new ThreadPoolExecutor(12, 60, 10,
+            TimeUnit.SECONDS, new LinkedBlockingQueue<>());
+    final ExecutorService clientexec = new ThreadPoolExecutor(6, 12, 1,
+            TimeUnit.SECONDS, new LinkedBlockingQueue<>());
+
+    public HttpClient newHttpClient(ProxySelector ps) {
+        HttpClient.Builder builder = HttpClient
+                .newBuilder()
+                .sslContext(context)
+                .executor(clientexec)
+                .proxy(ps);
+        return builder.build();
+    }
+
+    public void setUp() throws Exception {
+        try {
+            InetSocketAddress sa = new InetSocketAddress(InetAddress.getLoopbackAddress(), 0);
+
+            // HTTP/1.1
+            HttpServer server1 = HttpServer.create(sa, 0);
+            server1.setExecutor(executor);
+            http1Server = HttpTestServer.of(server1);
+            http1Server.addHandler(new HttpTestLargeHandler(), "/LargeResponseTest/http1/");
+            http1Server.start();
+            http1URI = new URI("http://" + http1Server.serverAuthority() + "/LargeResponseTest/http1/");
+
+
+            // HTTPS/1.1
+            HttpsServer sserver1 = HttpsServer.create(sa, 100);
+            sserver1.setExecutor(executor);
+            sserver1.setHttpsConfigurator(new HttpsConfigurator(context));
+            https1Server = HttpTestServer.of(sserver1);
+            https1Server.addHandler(new HttpTestLargeHandler(), "/LargeResponseTest/https1/");
+            https1Server.start();
+            https1URI = new URI("https://" + https1Server.serverAuthority() + "/LargeResponseTest/https1/");
+
+            // HTTP/2.0
+            http2Server = HttpTestServer.of(
+                    new Http2TestServer("localhost", false, 0));
+            http2Server.addHandler(new HttpTestLargeHandler(), "/LargeResponseTest/http2/");
+            http2Server.start();
+            http2URI = new URI("http://" + http2Server.serverAuthority() + "/LargeResponseTest/http2/");
+
+            // HTTPS/2.0
+            https2Server = HttpTestServer.of(
+                    new Http2TestServer("localhost", true, 0));
+            https2Server.addHandler(new HttpTestLargeHandler(), "/LargeResponseTest/https2/");
+            https2Server.start();
+            https2URI = new URI("https://" + https2Server.serverAuthority() + "/LargeResponseTest/https2/");
+
+            proxy = DigestEchoServer.createHttpsProxyTunnel(
+                    DigestEchoServer.HttpAuthSchemeType.NONE);
+            proxyAddress = proxy.getProxyAddress();
+            proxySelector = new HttpProxySelector(proxyAddress);
+            client = newHttpClient(proxySelector);
+            System.out.println("Setup: done");
+        } catch (Exception x) {
+            tearDown(); throw x;
+        } catch (Error e) {
+            tearDown(); throw e;
+        }
+    }
+
+    public static void main(String[] args) throws Exception {
+        LargeResponseTest test = new LargeResponseTest();
+        test.setUp();
+        long start = System.nanoTime();
+        try {
+            test.run(args);
+        } finally {
+            try {
+                long elapsed = System.nanoTime() - start;
+                System.out.println("*** Elapsed: " + Duration.ofNanos(elapsed));
+            } finally {
+                test.tearDown();
+            }
+        }
+    }
+
+    public void run(String... args) throws Exception {
+        List<URI> serverURIs = List.of(http1URI, http2URI, https1URI, https2URI);
+        for (int i=0; i<5; i++) {
+            for (URI base : serverURIs) {
+                if (base.getScheme().equalsIgnoreCase("https")) {
+                    URI proxy = i % 1 == 0 ? base.resolve(URI.create("proxy/foo?n="+requestCounter.incrementAndGet()))
+                    : base.resolve(URI.create("direct/foo?n="+requestCounter.incrementAndGet()));
+                    test(proxy);
+                }
+            }
+            for (URI base : serverURIs) {
+                URI direct = base.resolve(URI.create("direct/foo?n="+requestCounter.incrementAndGet()));
+                test(direct);
+            }
+        }
+        CompletableFuture.allOf(futures.toArray(new CompletableFuture[0])).join();
+    }
+
+    public void test(URI uri) throws Exception {
+        System.out.println("Testing with " + uri);
+        pending.add(uri);
+        HttpRequest request = HttpRequest.newBuilder(uri).build();
+        CompletableFuture<HttpResponse<String>> resp =
+                client.sendAsync(request, HttpResponse.BodyHandlers.ofString())
+                .whenComplete((r, t) -> this.requestCompleted(request, r, t));
+        futures.add(resp);
+    }
+
+    private void requestCompleted(HttpRequest request, HttpResponse<?> r, Throwable t) {
+        responseCounter.incrementAndGet();
+        pending.remove(request.uri());
+        System.out.println(request + " -> " + (t == null ? r : t)
+                + " [still pending: " + (requestCounter.get() - responseCounter.get()) +"]");
+        if (pending.size() < 10 && requestCounter.get() > 10) {
+            pending.forEach(u -> System.out.println("\tpending: " + u));
+        }
+    }
+
+    public void tearDown() {
+        proxy = stop(proxy, DigestEchoServer.TunnelingProxy::stop);
+        http1Server = stop(http1Server, HttpTestServer::stop);
+        https1Server = stop(https1Server, HttpTestServer::stop);
+        http2Server = stop(http2Server, HttpTestServer::stop);
+        https2Server = stop(https2Server, HttpTestServer::stop);
+        client = null;
+        try {
+            executor.awaitTermination(2000, TimeUnit.MILLISECONDS);
+        } catch (Throwable x) {
+        } finally {
+            executor.shutdownNow();
+        }
+        try {
+            clientexec.awaitTermination(2000, TimeUnit.MILLISECONDS);
+        } catch (Throwable x) {
+        } finally {
+            clientexec.shutdownNow();
+        }
+        System.out.println("Teardown: done");
+    }
+
+    private interface Stoppable<T> { public void stop(T service) throws Exception; }
+
+    static <T>  T stop(T service, Stoppable<T> stop) {
+        try { if (service != null) stop.stop(service); } catch (Throwable x) { };
+        return null;
+    }
+
+    static class HttpProxySelector extends ProxySelector {
+        private static final List<Proxy> NO_PROXY = List.of(Proxy.NO_PROXY);
+        private final List<Proxy> proxyList;
+        HttpProxySelector(InetSocketAddress proxyAddress) {
+            proxyList = List.of(new Proxy(Proxy.Type.HTTP, proxyAddress));
+        }
+
+        @Override
+        public List<Proxy> select(URI uri) {
+            // our proxy only supports tunneling
+            if (uri.getScheme().equalsIgnoreCase("https")) {
+                if (uri.getPath().contains("/proxy/")) {
+                    return proxyList;
+                }
+            }
+            return NO_PROXY;
+        }
+
+        @Override
+        public void connectFailed(URI uri, SocketAddress sa, IOException ioe) {
+            System.err.println("Connection to proxy failed: " + ioe);
+            System.err.println("Proxy: " + sa);
+            System.err.println("\tURI: " + uri);
+            ioe.printStackTrace();
+        }
+    }
+
+    public static class HttpTestLargeHandler implements HttpTestHandler {
+        @Override
+        public void handle(HttpTestExchange t) throws IOException {
+            try (InputStream is = t.getRequestBody();
+                 OutputStream os = t.getResponseBody()) {
+                byte[] bytes = is.readAllBytes();
+                assert bytes.length == 0;
+                URI u = t.getRequestURI();
+                long responseID = Long.parseLong(u.getQuery().substring(2));
+                System.out.println("Server " + t.getRequestURI() + " sending response " + responseID);
+                t.sendResponseHeaders(200, DATA.length * 3);
+                for (int i=0; i<3; i++) {
+                    os.write(DATA);
+                }
+                System.out.println("\tresp:" + responseID + ": done");
+            }
+        }
+    }
+
+}
--- a/test/jdk/java/net/httpclient/http2/RedirectTest.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/test/jdk/java/net/httpclient/http2/RedirectTest.java	Wed Oct 23 14:01:17 2019 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015, 2018, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2015, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -87,6 +87,11 @@
             }
         }
 
+        @Override
+        protected int redirectCode() {
+            return 308; // we need to use a code that preserves the body
+        }
+
         public synchronized boolean error() {
             return error;
         }
--- a/test/jdk/java/net/httpclient/http2/server/Http2RedirectHandler.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/test/jdk/java/net/httpclient/http2/server/Http2RedirectHandler.java	Wed Oct 23 14:01:17 2019 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016, 2018, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2016, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -42,11 +42,11 @@
             is.readAllBytes();
             String location = supplier.get();
             System.err.printf("RedirectHandler request to %s from %s\n",
-                t.getRequestURI().toString(), t.getRemoteAddress().toString());
+                    t.getRequestURI().toString(), t.getRemoteAddress().toString());
             System.err.println("Redirecting to: " + location);
             HttpHeadersBuilder headersBuilder = t.getResponseHeaders();
             headersBuilder.addHeader("Location", location);
-            t.sendResponseHeaders(301, 1024);
+            t.sendResponseHeaders(redirectCode(), 1024);
             byte[] bb = new byte[1024];
             OutputStream os = t.getResponseBody();
             os.write(bb);
@@ -55,6 +55,10 @@
         }
     }
 
+    protected int redirectCode() {
+        return 301;
+    }
+
     // override in sub-class to examine the exchange, but don't
     // alter transaction state by reading the request body etc.
     protected void examineExchange(Http2TestExchange t) {
--- a/test/jdk/java/rmi/testlibrary/TestSocketFactory.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/test/jdk/java/rmi/testlibrary/TestSocketFactory.java	Wed Oct 23 14:01:17 2019 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017, 2018, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2017, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -92,7 +92,8 @@
 
     static final byte[] EMPTY_BYTE_ARRAY = new byte[0];
 
-    public static final boolean DEBUG = false;
+    // True to enable logging of matches and replacements.
+    private static volatile boolean debugLogging = false;
 
     /**
      * Debugging output can be synchronized with logging of RMI actions.
@@ -100,8 +101,8 @@
      * @param format a printf format
      * @param args   any args
      */
-    private static void DEBUG(String format, Object... args) {
-        if (DEBUG) {
+    public static void DEBUG(String format, Object... args) {
+        if (debugLogging) {
             System.err.printf(format, args);
         }
     }
@@ -117,6 +118,17 @@
     }
 
     /**
+     * Set debug to true to generate logging output of matches and substitutions.
+     * @param debug {@code true} to generate logging output
+     * @return the previous value
+     */
+    public static boolean setDebug(boolean debug) {
+        boolean oldDebug = debugLogging;
+        debugLogging = debug;
+        return oldDebug;
+    }
+
+    /**
      * Set the match and replacement bytes, with an empty trigger.
      * The match and replacements are propagated to all existing sockets.
      *
--- a/test/jdk/java/rmi/transport/closeServerSocket/CloseServerSocket.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/test/jdk/java/rmi/transport/closeServerSocket/CloseServerSocket.java	Wed Oct 23 14:01:17 2019 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2005, 2016, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2005, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -63,8 +63,19 @@
         verifyPortInUse(PORT);
         UnicastRemoteObject.unexportObject(registry, true);
         System.err.println("- unexported registry");
-        Thread.sleep(1000);        // work around BindException (bug?)
-        verifyPortFree(PORT);
+        int tries = (int)TestLibrary.getTimeoutFactor();
+        tries = Math.max(tries, 1);
+        while (tries-- > 0) {
+            Thread.sleep(1000);
+            try {
+                verifyPortFree(PORT);
+                break;
+            } catch (IOException ignore) { }
+        }
+        if (tries < 0) {
+            throw new RuntimeException("time out after tries: " + tries);
+        }
+
 
         /*
          * The follow portion of this test is disabled temporarily
@@ -101,6 +112,7 @@
     private static void verifyPortInUse(int port) throws IOException {
         try {
             verifyPortFree(port);
+            throw new RuntimeException("port is not in use: " + port);
         } catch (BindException e) {
             System.err.println("- port " + port + " is in use");
             return;
--- a/test/jdk/java/security/testlibrary/Proc.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/test/jdk/java/security/testlibrary/Proc.java	Wed Oct 23 14:01:17 2019 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2013, 2018, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2013, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -25,6 +25,9 @@
 import java.io.File;
 import java.io.IOException;
 import java.io.InputStreamReader;
+import java.io.OutputStream;
+import java.io.PrintStream;
+import java.io.UncheckedIOException;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.Paths;
@@ -110,6 +113,7 @@
     private List<String> args = new ArrayList<>();
     private Map<String,String> env = new HashMap<>();
     private Map<String,String> prop = new HashMap();
+    private Map<String,String> secprop = new HashMap();
     private boolean inheritIO = false;
     private boolean noDump = false;
 
@@ -176,6 +180,11 @@
         prop.put(a, b);
         return this;
     }
+    // Specifies a security property. Can be called multiple times.
+    public Proc secprop(String a, String b) {
+        secprop.put(a, b);
+        return this;
+    }
     // Inherit the value of a system property
     public Proc inheritProp(String k) {
         String v = System.getProperty(k);
@@ -282,6 +291,17 @@
             cmd.add(cp.stream().collect(Collectors.joining(File.pathSeparator)));
         }
 
+        if (!secprop.isEmpty()) {
+            Path p = Path.of(getId("security"));
+            try (OutputStream fos = Files.newOutputStream(p);
+                 PrintStream ps = new PrintStream(fos)) {
+                secprop.forEach((k,v) -> ps.println(k + "=" + v));
+            } catch (IOException e) {
+                throw new UncheckedIOException(e);
+            }
+            prop.put("java.security.properties", p.toString());
+        }
+
         for (Entry<String,String> e: prop.entrySet()) {
             cmd.add("-D" + e.getKey() + "=" + e.getValue());
         }
@@ -380,6 +400,12 @@
         }
         return p.waitFor();
     }
+    // Wait for process end with expected exit code
+    public void waitFor(int expected) throws Exception {
+        if (p.waitFor() != expected) {
+            throw new RuntimeException("Exit code not " + expected);
+        }
+    }
 
     // The following methods are used inside a proc
 
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/jdk/javax/xml/crypto/dsig/Versions.java	Wed Oct 23 14:01:17 2019 -0400
@@ -0,0 +1,82 @@
+/*
+ * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * @test
+ * @bug 8232357
+ * @library /test/lib
+ * @summary Compare version info of Santuario to legal notice
+ */
+
+import jdk.test.lib.Asserts;
+
+import java.nio.file.Files;
+import java.nio.file.Path;
+
+public class Versions {
+
+    public static void main(String[] args) throws Exception {
+
+        Path src = Path.of(System.getProperty("test.root"),
+                "../../src/java.xml.crypto");
+        Path legal = Path.of(System.getProperty("test.jdk"), "legal");
+
+        Path provider = src.resolve(
+                "share/classes/org/jcp/xml/dsig/internal/dom/XMLDSigRI.java");
+
+        Path mdInSrc = src.resolve(
+                "share/legal/santuario.md");
+        Path mdInImage = legal.resolve(
+                "java.xml.crypto/santuario.md");
+
+        // Files in src should either both exist or not
+        if (!Files.exists(provider) && !Files.exists(mdInSrc)) {
+            System.out.println("Source not available. Cannot proceed.");
+            return;
+        }
+
+        // The line containing the version number looks like
+        // // Apache Santuario XML Security for Java, version n.n.n
+        String s1 = Files.lines(provider)
+                .filter(s -> s.contains(
+                        "// Apache Santuario XML Security for Java, version "))
+                .findFirst()
+                .get()
+                .replaceFirst(".* ", ""); // keep chars after the last space
+
+        // The first line of this file should look like
+        // ## Apache Santuario v2.1.3
+        String s2 = Files.lines(mdInSrc)
+                .findFirst()
+                .get()
+                .replace("## Apache Santuario v", "");
+
+        Asserts.assertEQ(s1, s2);
+
+        if (Files.exists(legal)) {
+            Asserts.assertTrue(Files.mismatch(mdInSrc, mdInImage) == -1);
+        } else {
+            System.out.println("Warning: skip image compare. Exploded build?");
+        }
+    }
+}
--- a/test/jdk/sun/misc/SunMiscSignalTest.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/test/jdk/sun/misc/SunMiscSignalTest.java	Wed Oct 23 14:01:17 2019 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016, 2018, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2016, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -133,10 +133,12 @@
 
         Object[][] posixNonOSXSignals = {
                 {"BUS",  IsSupported.YES, CanRegister.YES, CanRaise.YES, invokedXrs},
+                {"INFO", IsSupported.NO, CanRegister.NO, CanRaise.NO, Invoked.NO},
         };
 
         Object[][] posixOSXSignals = {
                 {"BUS",  IsSupported.YES, CanRegister.NO, CanRaise.NO, Invoked.NO},
+                {"INFO", IsSupported.YES, CanRegister.YES, CanRaise.YES, invokedXrs},
         };
 
         Object[][] windowsSignals = {
--- a/test/jdk/sun/security/util/FilePermCompat/Flag.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/test/jdk/sun/security/util/FilePermCompat/Flag.java	Wed Oct 23 14:01:17 2019 -0400
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016, 2017, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2016, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -23,22 +23,84 @@
 
 /*
  * @test
- * @bug 8164705
+ * @bug 8164705 8209901
+ * @library /test/jdk/java/security/testlibrary
+ * @modules java.base/jdk.internal.misc
  * @summary check jdk.filepermission.canonicalize
- * @run main/othervm/policy=flag.policy
-  *     -Djdk.io.permissionsUseCanonicalPath=true Flag true true
- * @run main/othervm/policy=flag.policy
-  *     -Djdk.io.permissionsUseCanonicalPath=false Flag false true
- * @run main/othervm/policy=flag.policy Flag false true
  */
 
 import java.io.File;
 import java.io.FilePermission;
 import java.lang.*;
+import java.nio.file.Path;
 
 public class Flag {
     public static void main(String[] args) throws Exception {
 
+        if (args.length == 0) {
+            String policy = Path.of(
+                    System.getProperty("test.src"), "flag.policy").toString();
+
+            // effectively true
+            Proc.create("Flag")
+                    .prop("java.security.manager", "")
+                    .prop("java.security.policy", policy)
+                    .prop("jdk.io.permissionsUseCanonicalPath", "true")
+                    .args("run", "true", "true")
+                    .start()
+                    .waitFor(0);
+            Proc.create("Flag")
+                    .prop("java.security.manager", "")
+                    .prop("java.security.policy", policy)
+                    .secprop("jdk.io.permissionsUseCanonicalPath", "true")
+                    .args("run", "true", "true")
+                    .start()
+                    .waitFor(0);
+            Proc.create("Flag")
+                    .prop("java.security.manager", "")
+                    .prop("java.security.policy", policy)
+                    .secprop("jdk.io.permissionsUseCanonicalPath", "false")
+                    .prop("jdk.io.permissionsUseCanonicalPath", "true")
+                    .args("run", "true", "true")
+                    .start()
+                    .waitFor(0);
+
+            // effectively false
+            Proc.create("Flag")
+                    .prop("java.security.manager", "")
+                    .prop("java.security.policy", policy)
+                    .prop("jdk.io.permissionsUseCanonicalPath", "false")
+                    .args("run", "false", "true")
+                    .start()
+                    .waitFor(0);
+            Proc.create("Flag")
+                    .prop("java.security.manager", "")
+                    .prop("java.security.policy", policy)
+                    .secprop("jdk.io.permissionsUseCanonicalPath", "false")
+                    .args("run", "false", "true")
+                    .start()
+                    .waitFor(0);
+            Proc.create("Flag")
+                    .prop("java.security.manager", "")
+                    .prop("java.security.policy", policy)
+                    .secprop("jdk.io.permissionsUseCanonicalPath", "true")
+                    .prop("jdk.io.permissionsUseCanonicalPath", "false")
+                    .args("run", "false", "true")
+                    .start()
+                    .waitFor(0);
+            Proc.create("Flag")
+                    .prop("java.security.manager", "")
+                    .prop("java.security.policy", policy)
+                    .args("run", "false", "true")
+                    .start()
+                    .waitFor(0);
+        } else {
+            run(args);
+        }
+    }
+
+    static void run(String[] args) throws Exception {
+
         boolean test1;
         boolean test2;
 
@@ -55,8 +117,8 @@
             test2 = false;
         }
 
-        if (test1 != Boolean.parseBoolean(args[0]) ||
-                test2 != Boolean.parseBoolean(args[1])) {
+        if (test1 != Boolean.parseBoolean(args[1]) ||
+                test2 != Boolean.parseBoolean(args[2])) {
             throw new Exception("Test failed: " + test1 + " " + test2);
         }
     }
--- a/test/langtools/jdk/javadoc/tool/TestScriptInComment.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/test/langtools/jdk/javadoc/tool/TestScriptInComment.java	Wed Oct 23 14:01:17 2019 -0400
@@ -23,7 +23,7 @@
 
 /**
  * @test
- * @bug 8138725
+ * @bug 8138725 8226765
  * @summary test --allow-script-in-comments
  * @modules jdk.javadoc/jdk.javadoc.internal.tool
  */
@@ -63,6 +63,10 @@
         WS("< script >#ALERT</script>", false, "-Xdoclint:none"), // script tag with invalid white space
         SP("<script src=\"file\"> #ALERT </script>", true), // script tag with an attribute
         ON("<a onclick='#ALERT'>x</a>", true), // event handler attribute
+        OME("<img alt='1' onmouseenter='#ALERT'>", true), // onmouseenter event handler attribute
+        OML("<img alt='1' onmouseleave='#ALERT'>", true), // onmouseleave event handler attribute
+        OFI("<a href='#' onfocusin='#ALERT'>x</a>", true), // onfocusin event handler attribute
+        OBE("<a onbogusevent='#ALERT'>x</a>", true), // bogus/future event handler attribute
         URI("<a href='javascript:#ALERT'>x</a>", true); // javascript URI
 
         /**
--- a/test/langtools/tools/javac/diags/examples.not-yet.txt	Wed Oct 23 13:53:41 2019 -0400
+++ b/test/langtools/tools/javac/diags/examples.not-yet.txt	Wed Oct 23 14:01:17 2019 -0400
@@ -11,6 +11,7 @@
 compiler.err.invalid.repeatable.annotation.invalid.value # "can't" happen
 compiler.err.invalid.repeatable.annotation.multiple.values # can't happen
 compiler.err.io.exception                               # (javah.JavahTask?)
+compiler.err.is.preview                                 # difficult to produce reliably despite future changes to java.base
 compiler.err.limit.code                                 # Code
 compiler.err.limit.code.too.large.for.try.stmt          # Gen
 compiler.err.limit.dimensions                           # Gen
@@ -111,6 +112,7 @@
 compiler.warn.illegal.char.for.encoding
 compiler.warn.incubating.modules                        # requires adjusted classfile
 compiler.warn.invalid.archive.file
+compiler.warn.is.preview                                # difficult to produce reliably despite future changes to java.base
 compiler.warn.override.bridge
 compiler.warn.position.overflow                         # CRTable: caused by files with long lines >= 1024 chars
 compiler.warn.proc.type.already.exists                  # JavacFiler: just mentioned in TODO
--- a/test/langtools/tools/javac/lib/combo/ComboInstance.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/test/langtools/tools/javac/lib/combo/ComboInstance.java	Wed Oct 23 14:01:17 2019 -0400
@@ -23,6 +23,7 @@
 
 package combo;
 
+import java.lang.reflect.Method;
 import javax.tools.StandardJavaFileManager;
 import java.util.Optional;
 
@@ -57,6 +58,14 @@
             env.info().lastError = Optional.of(ex);
         } finally {
             this.env = null;
+            try {
+                Class<?> fmClass = env.fileManager().getClass();
+                Method clear = fmClass.getMethod("clear");
+                clear.setAccessible(true);
+                clear.invoke(env.fileManager());
+            } catch (Exception ex) {
+                throw new IllegalStateException(ex);
+            }
         }
     }
 
@@ -125,4 +134,4 @@
             return success;
         }
     }
-}
\ No newline at end of file
+}
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/langtools/tools/javac/preview/PreviewErrors.java	Wed Oct 23 14:01:17 2019 -0400
@@ -0,0 +1,274 @@
+/*
+ * Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * @test
+ * @bug 8226585
+ * @summary Verify behavior w.r.t. preview feature API errors and warnings
+ * @library /tools/lib /tools/javac/lib
+ * @modules
+ *      java.base/jdk.internal
+ *      jdk.compiler/com.sun.tools.javac.api
+ *      jdk.compiler/com.sun.tools.javac.file
+ *      jdk.compiler/com.sun.tools.javac.main
+ *      jdk.compiler/com.sun.tools.javac.util
+ * @build toolbox.ToolBox toolbox.JavacTask
+ * @build combo.ComboTestHelper
+ * @compile --enable-preview -source ${jdk.version} PreviewErrors.java
+ * @run main/othervm --enable-preview PreviewErrors
+ */
+
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+
+import combo.ComboInstance;
+import combo.ComboParameter;
+import combo.ComboTask;
+import combo.ComboTestHelper;
+import java.util.Arrays;
+import java.util.Set;
+import java.util.stream.Collectors;
+import javax.tools.Diagnostic;
+
+import jdk.internal.PreviewFeature;
+
+import toolbox.JavacTask;
+import toolbox.ToolBox;
+
+public class PreviewErrors extends ComboInstance<PreviewErrors> {
+
+    protected ToolBox tb;
+
+    PreviewErrors() {
+        super();
+        tb = new ToolBox();
+    }
+
+    public static void main(String... args) throws Exception {
+        new ComboTestHelper<PreviewErrors>()
+                .withDimension("ESSENTIAL", (x, essential) -> x.essential = essential, EssentialAPI.values())
+                .withDimension("PREVIEW", (x, preview) -> x.preview = preview, Preview.values())
+                .withDimension("LINT", (x, lint) -> x.lint = lint, Lint.values())
+                .withDimension("SUPPRESS", (x, suppress) -> x.suppress = suppress, Suppress.values())
+                .withDimension("FROM", (x, from) -> x.from = from, PreviewFrom.values())
+                .run(PreviewErrors::new);
+    }
+
+    private EssentialAPI essential;
+    private Preview preview;
+    private Lint lint;
+    private Suppress suppress;
+    private PreviewFrom from;
+
+    @Override
+    public void doWork() throws IOException {
+        Path base = Paths.get(".");
+        Path src = base.resolve("src");
+        Path srcJavaBase = src.resolve("java.base");
+        Path classes = base.resolve("classes");
+        Path classesJavaBase = classes.resolve("java.base");
+
+        Files.createDirectories(classesJavaBase);
+
+        String previewAPI = """
+                            package preview.api;
+                            public class Extra {
+                                @jdk.internal.PreviewFeature(feature=jdk.internal.PreviewFeature.Feature.${preview}
+                                                             ${essential})
+                                public static void test() { }
+                                @jdk.internal.PreviewFeature(feature=jdk.internal.PreviewFeature.Feature.${preview}
+                                                             ${essential})
+                                public static class Clazz {}
+                            }
+                            """.replace("${preview}", PreviewFeature.Feature.values()[0].name())
+                               .replace("${essential}", essential.expand(null));
+
+         if (from == PreviewFrom.CLASS) {
+            tb.writeJavaFiles(srcJavaBase, previewAPI);
+
+            new JavacTask(tb)
+                    .outdir(classesJavaBase)
+                    .options("--patch-module", "java.base=" + srcJavaBase.toString())
+                    .files(tb.findJavaFiles(srcJavaBase))
+                    .run()
+                    .writeAll();
+         }
+
+        ComboTask task = newCompilationTask()
+                .withSourceFromTemplate("""
+                                        package test;
+                                        public class Test {
+                                            #{SUPPRESS}
+                                            public void test() {
+                                                preview.api.Extra.test();
+                                                preview.api.Extra.Clazz c;
+                                            }
+                                        }
+                                        """)
+                .withOption("-XDrawDiagnostics")
+                .withOption("-source")
+                .withOption(String.valueOf(Runtime.version().feature()));
+
+        if (from == PreviewFrom.CLASS) {
+            task.withOption("--patch-module")
+                .withOption("java.base=" + classesJavaBase.toString())
+                .withOption("--add-exports")
+                .withOption("java.base/preview.api=ALL-UNNAMED");
+        } else {
+            task.withSourceFromTemplate("Extra", previewAPI)
+                .withOption("--add-exports")
+                .withOption("java.base/jdk.internal=ALL-UNNAMED");
+        }
+
+        if (preview.expand(null)!= null) {
+            task = task.withOption(preview.expand(null));
+        }
+
+        if (lint.expand(null) != null) {
+            task = task.withOption(lint.expand(null));
+        }
+
+        task.generate(result -> {
+                Set<String> actual = Arrays.stream(Diagnostic.Kind.values())
+                                            .flatMap(kind -> result.diagnosticsForKind(kind).stream())
+                                            .map(d -> d.getLineNumber() + ":" + d.getColumnNumber() + ":" + d.getCode())
+                                            .collect(Collectors.toSet());
+                Set<String> expected;
+                boolean ok;
+                if (essential == EssentialAPI.YES) {
+                    if (preview == Preview.YES) {
+                        if (suppress == Suppress.YES) {
+                            expected = Set.of();
+                        } else if (lint == Lint.ENABLE_PREVIEW) {
+                            expected = Set.of("5:26:compiler.warn.is.preview", "6:26:compiler.warn.is.preview");
+                        } else {
+                            expected = Set.of("-1:-1:compiler.note.preview.filename",
+                                              "-1:-1:compiler.note.preview.recompile");
+                        }
+                        ok = true;
+                    } else {
+                        expected = Set.of("5:26:compiler.err.is.preview", "6:26:compiler.err.is.preview");
+                        ok = false;
+                    }
+                } else {
+                    if (suppress == Suppress.YES) {
+                        expected = Set.of();
+                    } else if ((preview == Preview.YES && (lint == Lint.NONE || lint == Lint.DISABLE_PREVIEW)) ||
+                               (preview == Preview.NO && lint == Lint.DISABLE_PREVIEW)) {
+                        expected = Set.of("-1:-1:compiler.note.preview.filename",
+                                          "-1:-1:compiler.note.preview.recompile");
+                    } else {
+                        expected = Set.of("5:26:compiler.warn.is.preview", "6:26:compiler.warn.is.preview");
+                    }
+                    ok = true;
+                }
+                if (ok) {
+                    if (!result.get().iterator().hasNext()) {
+                        throw new IllegalStateException("Did not succeed as expected." + actual);
+                    }
+                } else {
+                    if (result.get().iterator().hasNext()) {
+                        throw new IllegalStateException("Succeed unexpectedly.");
+                    }
+                }
+                if (!expected.equals(actual)) {
+                    throw new IllegalStateException("Unexpected output for " + essential + ", " + preview + ", " + lint + ", " + suppress + ", " + from + ": actual: \"" + actual + "\", expected: \"" + expected + "\"");
+                }
+            });
+    }
+
+    public enum EssentialAPI implements ComboParameter {
+        YES(", essentialAPI=true"),
+        NO(", essentialAPI=false");
+
+        private final String code;
+
+        private EssentialAPI(String code) {
+            this.code = code;
+        }
+
+        public String expand(String optParameter) {
+            return code;
+        }
+    }
+
+    public enum Preview implements ComboParameter {
+        YES("--enable-preview"),
+        NO(null);
+
+        private final String opt;
+
+        private Preview(String opt) {
+            this.opt = opt;
+        }
+
+        public String expand(String optParameter) {
+            return opt;
+        }
+    }
+
+    public enum Lint implements ComboParameter {
+        NONE(null),
+        ENABLE_PREVIEW("-Xlint:preview"),
+        DISABLE_PREVIEW("-Xlint:-preview");
+
+        private final String opt;
+
+        private Lint(String opt) {
+            this.opt = opt;
+        }
+
+        public String expand(String optParameter) {
+            return opt;
+        }
+    }
+
+    public enum Suppress implements ComboParameter {
+        YES("@SuppressWarnings(\"preview\")"),
+        NO("");
+
+        private final String code;
+
+        private Suppress(String code) {
+            this.code = code;
+        }
+
+        public String expand(String optParameter) {
+            return code;
+        }
+    }
+
+    public enum PreviewFrom implements ComboParameter {
+        CLASS,
+        SOURCE;
+
+        private PreviewFrom() {
+        }
+
+        public String expand(String optParameter) {
+            throw new IllegalStateException();
+        }
+    }
+}
--- a/test/langtools/tools/javac/tree/NoPrivateTypesExported.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/test/langtools/tools/javac/tree/NoPrivateTypesExported.java	Wed Oct 23 14:01:17 2019 -0400
@@ -177,6 +177,7 @@
 
             if (annotationElement.getAnnotation(Documented.class) == null) {
                 note("Ignoring undocumented annotation: " + mirror.getAnnotationType());
+                continue;
             }
 
             verifyTypeAcceptable(mirror.getAnnotationType(), acceptable);
--- a/test/langtools/tools/jdeps/listdeps/ListModuleDeps.java	Wed Oct 23 13:53:41 2019 -0400
+++ b/test/langtools/tools/jdeps/listdeps/ListModuleDeps.java	Wed Oct 23 14:01:17 2019 -0400
@@ -92,6 +92,7 @@
     public Object[][] jdkModules() {
         return new Object[][]{
             {"jdk.compiler", new String[]{
+                                "java.base/jdk.internal",
                                 "java.base/jdk.internal.jmod",
                                 "java.base/jdk.internal.misc",
                                 "java.base/sun.reflect.annotation",