--- old/jdk/src/share/classes/com/sun/java/util/jar/pack/NativeUnpack.java	2013-02-07 17:06:45.000000000 +0100
+++ new/jdk/src/share/classes/com/sun/java/util/jar/pack/NativeUnpack.java	2013-02-07 17:06:45.000000000 +0100
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2003, 2011, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2003, 2012, 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
@@ -104,6 +104,10 @@
         return (p200 == null)? null: p200._nunp;
     }
 
+    private synchronized long getUnpackerPtr() {
+        return unpackerPtr;
+    }
+
     // Callback from the unpacker engine to get more data.
     private long readInputFn(ByteBuffer pbuf, long minlen) throws IOException {
         if (in == null)  return 0;  // nothing is readable