--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/hotspot/jtreg/runtime/cds/appcds/jigsaw/classpathtests/EmptyClassInBootClassPath.java	Thu Oct 17 20:53:35 2019 +0100
@@ -0,0 +1,101 @@
+/*
+ * 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.
+ *
+ */
+
+/*
+ * @test
+ * @summary Test a few scenarios if an empty class, which has the same name as the one in the jimage, is specified in the -Xbootclasspath/a
+ *     1) boot loader will always load the class from the bootclasspath
+ *     2) app loader will load the class from the jimage by default;
+ *        app loader will load the class from the bootclasspath if the
+ *        "--limit-modules java.base" option is specified
+ * @requires vm.cds & !vm.graal.enabled
+ * @library /test/lib /test/hotspot/jtreg/runtime/cds/appcds
+ * @modules java.base/jdk.internal.access
+ *          jdk.jartool/sun.tools.jar
+ * @compile ../../test-classes/EmptyClassHelper.java
+ * @compile ../../test-classes/com/sun/tools/javac/Main.jasm
+ * @run driver EmptyClassInBootClassPath
+ */
+
+import java.io.File;
+import java.lang.*;
+import java.lang.reflect.*;
+import java.util.List;
+import java.util.ArrayList;
+import jdk.test.lib.process.OutputAnalyzer;
+
+public class EmptyClassInBootClassPath {
+    static final String EXPECTED_EXCEPTION =
+        "java.lang.NoSuchMethodException: com.sun.tools.javac.Main.main([Ljava.lang.String;)";
+    public static void main(String[] args) throws Exception {
+        String[] className = {"com/sun/tools/javac/Main"};
+        JarBuilder.build("emptyClass", className);
+        String appJar = TestCommon.getTestJar("emptyClass.jar");
+        JarBuilder.build("EmptyClassHelper", "EmptyClassHelper");
+        String helperJar = TestCommon.getTestJar("EmptyClassHelper.jar");
+        OutputAnalyzer dumpOutput = TestCommon.dump(
+            appJar, className, "-Xbootclasspath/a:" + appJar);
+        TestCommon.checkDump(dumpOutput);
+        dumpOutput.shouldNotContain("Preload Warning: skipping class from -Xbootclasspath/a " + className[0]);
+
+        String bootclasspath = "-Xbootclasspath/a:" + appJar;
+        String classPath = "-Djava.class.path=" + appJar + File.pathSeparator + helperJar;
+        List<String> argsList = new ArrayList<String>();
+        argsList.add(classPath);
+        argsList.add(bootclasspath);
+        argsList.add("--add-exports=java.base/jdk.internal.access=ALL-UNNAMED");
+        argsList.add("EmptyClassHelper");
+
+        // case 1: load class in bootclasspath using app loader
+        argsList.add("useAppLoader");
+        String[] opts = new String[argsList.size()];
+        opts = argsList.toArray(opts);
+        TestCommon.run(opts).assertNormalExit("appLoader found method main");
+
+        // case 2: load class in bootclasspath using boot loader
+        argsList.remove(argsList.size() - 1);
+        argsList.add("useBootLoader");
+        opts = new String[argsList.size()];
+        opts = argsList.toArray(opts);
+        TestCommon.run(opts).assertNormalExit(EXPECTED_EXCEPTION);
+
+        // case 3: load class in bootclasspath using app loader with '--limit-modules java.base'
+        argsList.add(0, "--limit-modules");
+        argsList.add(1, "java.base");
+        argsList.remove(argsList.size() - 1);
+        argsList.add("useAppLoader");
+        opts = new String[argsList.size()];
+        opts = argsList.toArray(opts);
+        TestCommon.run(opts)
+            .assertSilentlyDisabledCDS(0, EXPECTED_EXCEPTION);
+
+        // case 4: load class in bootclasspath using boot loader with '--limit-modules java.base'
+        argsList.remove(argsList.size() - 1);
+        argsList.add("useBootLoader");
+        opts = new String[argsList.size()];
+        opts = argsList.toArray(opts);
+        TestCommon.run(opts)
+            .assertSilentlyDisabledCDS(0, EXPECTED_EXCEPTION);
+    }
+}