--- a/hotspot/src/share/vm/memory/freeBlockDictionary.hpp	Wed Jun 27 15:23:36 2012 +0200
+++ b/hotspot/src/share/vm/memory/freeBlockDictionary.hpp	Thu Jun 28 17:03:16 2012 -0400
@@ -34,7 +34,7 @@
 // A FreeBlockDictionary is an abstract superclass that will allow
 // a number of alternative implementations in the future.
 template <class Chunk>
-class FreeBlockDictionary: public CHeapObj {
+class FreeBlockDictionary: public CHeapObj<mtGC> {
  public:
   enum Dither {
     atLeast,