--- a/hotspot/src/share/vm/gc_implementation/parallelScavenge/parMarkBitMap.hpp	Wed Jun 27 15:23:36 2012 +0200
+++ b/hotspot/src/share/vm/gc_implementation/parallelScavenge/parMarkBitMap.hpp	Thu Jun 28 17:03:16 2012 -0400
@@ -32,7 +32,7 @@
 class oopDesc;
 class ParMarkBitMapClosure;
 
-class ParMarkBitMap: public CHeapObj
+class ParMarkBitMap: public CHeapObj<mtGC>
 {
 public:
   typedef BitMap::idx_t idx_t;