diff -r 64752e56d721 -r be27e1b6a4b9 hotspot/src/share/vm/gc_implementation/g1/g1RemSet.hpp
--- a/hotspot/src/share/vm/gc_implementation/g1/g1RemSet.hpp	Wed Jun 27 15:23:36 2012 +0200
+++ b/hotspot/src/share/vm/gc_implementation/g1/g1RemSet.hpp	Thu Jun 28 17:03:16 2012 -0400
@@ -36,7 +36,7 @@
 // external heap references into it.  Uses a mod ref bs to track updates,
 // so that they can be used to update the individual region remsets.
 
-class G1RemSet: public CHeapObj {
+class G1RemSet: public CHeapObj<mtGC> {
 protected:
   G1CollectedHeap* _g1;
   unsigned _conc_refine_cards;