diff -r 64752e56d721 -r be27e1b6a4b9 hotspot/src/share/vm/gc_implementation/g1/heapRegionRemSet.hpp
--- a/hotspot/src/share/vm/gc_implementation/g1/heapRegionRemSet.hpp	Wed Jun 27 15:23:36 2012 +0200
+++ b/hotspot/src/share/vm/gc_implementation/g1/heapRegionRemSet.hpp	Thu Jun 28 17:03:16 2012 -0400
@@ -173,7 +173,7 @@
   static void print_from_card_cache();
 };
 
-class HeapRegionRemSet : public CHeapObj {
+class HeapRegionRemSet : public CHeapObj<mtGC> {
   friend class VMStructs;
   friend class HeapRegionRemSetIterator;
 
@@ -360,7 +360,7 @@
 #endif
 };
 
-class HeapRegionRemSetIterator : public CHeapObj {
+class HeapRegionRemSetIterator : public CHeapObj<mtGC> {
 
   // The region over which we're iterating.
   const HeapRegionRemSet* _hrrs;