--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/hotspot/jtreg/runtime/cds/appcds/dynamicArchive/AppendClasspath.java	Mon Jul 29 10:34:20 2019 -0400
@@ -0,0 +1,92 @@
+/*
+ * 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
+ * @summary At run time, it is OK to append new elements to the classpath that was used at dump time.
+ * @requires vm.cds
+ * @library /test/lib /test/hotspot/jtreg/runtime/cds/appcds
+ * @modules java.base/jdk.internal.misc
+ *          java.management
+ *          jdk.jartool/sun.tools.jar
+ * @compile ../test-classes/Hello.java
+ * @compile ../test-classes/HelloMore.java
+ * @run driver AppendClasspath
+ */
+
+import java.io.File;
+
+public class AppendClasspath extends DynamicArchiveTestBase {
+
+    public static void main(String[] args) throws Exception {
+        runTest(AppendClasspath::testDefaultBase);
+    }
+
+    static void testDefaultBase() throws Exception {
+        String topArchiveName = getNewArchiveName("top");
+        doTest(topArchiveName);
+    }
+
+    private static void doTest(String topArchiveName) throws Exception {
+        String appJar = JarBuilder.getOrCreateHelloJar();
+        String appJar2 = JarBuilder.build("AppendClasspath_HelloMore", "HelloMore");
+
+        // Dump an archive with a specified JAR file in -classpath
+        dump(topArchiveName,
+             "-Xlog:cds",
+             "-Xlog:cds+dynamic=debug",
+             "-cp", appJar, "Hello")
+            .assertNormalExit(output -> {
+                    output.shouldContain("Buffer-space to target-space delta")
+                           .shouldContain("Written dynamic archive 0x");
+                });
+
+        // runtime with classpath containing the one used in dump time,
+        // i.e. the dump time classpath is a prefix of the runtime classpath.
+        run(topArchiveName,
+            "-Xlog:class+load",
+            "-Xlog:cds+dynamic=debug,cds=debug",
+            "-cp", appJar + File.pathSeparator + appJar2,
+            "HelloMore")
+            .assertNormalExit(output -> {
+                    output.shouldContain("Hello source: shared objects file")
+                          .shouldContain("Hello World ... More")
+                          .shouldHaveExitValue(0);
+                });
+
+        // reverse the order of the 2 jar files so that the dump time classpath
+        // is no longer a prefix of the runtime classpath. The Hello class
+        // should be loaded from the jar file.
+        run(topArchiveName,
+            "-Xlog:class+load",
+            "-Xlog:cds+dynamic=debug,cds=debug",
+            "-cp", appJar2 + File.pathSeparator + appJar,
+            "HelloMore")
+            .assertAbnormalExit(output -> {
+                    output.shouldContain("shared class paths mismatch")
+                          .shouldHaveExitValue(1);
+                });
+
+    }
+}