--- old/src/share/vm/memory/iterator.hpp	2013-05-10 15:56:02.580884933 +0200
+++ new/src/share/vm/memory/iterator.hpp	2013-05-10 15:56:02.516884935 +0200
@@ -158,7 +158,7 @@
 };
 
 
-class BoolObjectClosure : public ObjectClosure {
+class BoolObjectClosure {
  public:
   virtual bool do_object_b(oop obj) = 0;
 };