--- a/hotspot/src/share/vm/memory/generationSpec.hpp	Wed Jun 27 15:23:36 2012 +0200
+++ b/hotspot/src/share/vm/memory/generationSpec.hpp	Thu Jun 28 17:03:16 2012 -0400
@@ -32,7 +32,7 @@
 // some generation-specific behavior.  This is done here rather than as a
 // virtual function of Generation because these methods are needed in
 // initialization of the Generations.
-class GenerationSpec : public CHeapObj {
+class GenerationSpec : public CHeapObj<mtGC> {
   friend class VMStructs;
 private:
   Generation::Name _name;
@@ -71,7 +71,7 @@
 // The specification of a permanent generation. This class is very
 // similar to GenerationSpec in use. Due to PermGen's not being a
 // true Generation, we cannot combine the spec classes either.
-class PermanentGenerationSpec : public CHeapObj {
+class PermanentGenerationSpec : public CHeapObj<mtGC> {
   friend class VMStructs;
 private:
   PermGen::Name    _name;