--- old/src/share/vm/gc_implementation/g1/g1CollectedHeap.hpp	2013-06-04 17:03:22.367740602 +0200
+++ new/src/share/vm/gc_implementation/g1/g1CollectedHeap.hpp	2013-06-04 17:03:22.171740597 +0200
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2001, 2012, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2001, 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
@@ -1075,6 +1075,9 @@
   // specified by the policy object.
   jint initialize();
 
+  // return the (conservative) maximum heap alignment for any G1 heap
+  static size_t max_heap_alignment();
+
   // Initialize weak reference processing.
   virtual void ref_processing_init();