diff -r b57c48f16179 -r 471eee27e770 jdk/test/java/lang/instrument/RedefineMethodInBacktraceAgent.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/jdk/test/java/lang/instrument/RedefineMethodInBacktraceAgent.java	Tue Jan 22 13:53:53 2013 +0100
@@ -0,0 +1,42 @@
+/*
+ * Copyright (c) 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.
+ */
+
+import java.lang.instrument.Instrumentation;
+
+public class RedefineMethodInBacktraceAgent {
+    private static Instrumentation instrumentation;
+
+    private RedefineMethodInBacktraceAgent() {}
+
+    public static void premain(String agentArgs, Instrumentation inst) {
+        System.out.println("Hello from RedefineMethodInBacktraceAgent!");
+        System.out.println("isRedefineClassesSupported()=" +
+                inst.isRedefineClassesSupported());
+
+        instrumentation = inst;
+    }
+
+    public static Instrumentation getInstrumentation() {
+        return instrumentation;
+    }
+}