--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/hotspot/jtreg/runtime/cds/appcds/javaldr/GCDuringDump.java	Mon Jul 29 10:34:20 2019 -0400
@@ -0,0 +1,84 @@
+/*
+ * 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
+ * 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 When dumping the CDS archive, try to cause garbage collection while classes are being loaded.
+ * @library /test/lib /test/hotspot/jtreg/runtime/cds/appcds /test/hotspot/jtreg/runtime/cds/appcds/test-classes
+ * @requires vm.cds
+ * @requires vm.flavor != "minimal"
+ * @modules java.base/jdk.internal.misc
+ *          jdk.jartool/sun.tools.jar
+ *          java.management
+ * @build GCDuringDumpTransformer Hello
+ * @run main/othervm GCDuringDump
+ */
+
+import jdk.test.lib.cds.CDSOptions;
+import jdk.test.lib.process.OutputAnalyzer;
+import jdk.test.lib.process.ProcessTools;
+
+public class GCDuringDump {
+    public static String appClasses[] = {
+        "Hello",
+    };
+    public static String agentClasses[] = {
+        "GCDuringDumpTransformer",
+    };
+
+    public static void main(String[] args) throws Throwable {
+        String agentJar =
+            ClassFileInstaller.writeJar("GCDuringDumpTransformer.jar",
+                                        ClassFileInstaller.Manifest.fromSourceFile("GCDuringDumpTransformer.mf"),
+                                        agentClasses);
+
+        String appJar =
+            ClassFileInstaller.writeJar("GCDuringDumpApp.jar", appClasses);
+
+        String gcLog = Boolean.getBoolean("test.cds.verbose.gc") ?
+            "-Xlog:gc*=info,gc+region=trace,gc+alloc+region=debug" : "-showversion";
+
+        for (int i=0; i<2; i++) {
+            // i = 0 -- run without agent = no extra GCs
+            // i = 1 -- run with agent = cause extra GCs
+
+            String extraArg = (i == 0) ? "-showversion" : "-javaagent:" + agentJar;
+            String extraOption = (i == 0) ? "-showversion" : "-XX:+AllowArchivingWithJavaAgent";
+
+            TestCommon.testDump(appJar, TestCommon.list("Hello"),
+                                "-XX:+UnlockDiagnosticVMOptions", extraOption,
+                                extraArg, "-Xmx32m", gcLog);
+
+            TestCommon.run(
+                "-cp", appJar,
+                "-Xmx32m",
+                "-XX:+PrintSharedSpaces",
+                "-XX:+UnlockDiagnosticVMOptions", extraOption,
+                gcLog,
+                "Hello")
+              .assertNormalExit();
+        }
+    }
+}
+