--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test/hotspot/jtreg/runtime/cds/serviceability/ReplaceCriticalClassesForSubgraphs.java	Mon Jul 29 10:34:20 2019 -0400
@@ -0,0 +1,50 @@
+/*
+ * Copyright (c) 2018, 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 Tests how CDS works when critical library classes are replaced with JVMTI ClassFileLoadHook
+ * @library /test/lib
+ * @requires vm.cds.archived.java.heap
+ * @build sun.hotspot.WhiteBox
+ * @run driver ClassFileInstaller -jar whitebox.jar sun.hotspot.WhiteBox
+ * @run main/othervm/native ReplaceCriticalClassesForSubgraphs
+ */
+
+public class ReplaceCriticalClassesForSubgraphs extends ReplaceCriticalClasses {
+    public static void main(String args[]) throws Throwable {
+        ReplaceCriticalClassesForSubgraphs rcc = new ReplaceCriticalClassesForSubgraphs();
+        rcc.process(args);
+    }
+
+    public String[] getTests() {
+        String tests[] = {
+            // Try to replace classes that are used by the archived subgraph graphs.
+            "-early -notshared -subgraph java/lang/module/ResolvedModule jdk.internal.module.ArchivedModuleGraph",
+            "-early -notshared -subgraph java/lang/Long java.lang.Long$LongCache",
+            "-subgraph java/lang/Long java.lang.Long$LongCache",
+        };
+        return tests;
+    }
+}