--- old/src/share/vm/memory/genCollectedHeap.hpp	2013-06-04 17:03:27.779740746 +0200
+++ new/src/share/vm/memory/genCollectedHeap.hpp	2013-06-04 17:03:27.583740741 +0200
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000, 2012, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2000, 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
@@ -148,6 +148,11 @@
     return gen_policy()->size_policy();
   }
 
+  // return the (conservative) maximum heap alignment
+  static size_t max_heap_alignment() {
+    return Generation::GenGrain;
+  }
+
   size_t capacity() const;
   size_t used() const;