--- a/hotspot/src/share/vm/interpreter/oopMapCache.hpp	Wed Jun 27 15:23:36 2012 +0200
+++ b/hotspot/src/share/vm/interpreter/oopMapCache.hpp	Thu Jun 28 17:03:16 2012 -0400
@@ -156,7 +156,7 @@
 #endif
 };
 
-class OopMapCache : public CHeapObj {
+class OopMapCache : public CHeapObj<mtClass> {
  private:
   enum { _size        = 32,     // Use fixed size for now
          _probe_depth = 3       // probe depth in case of collisions