--- old/src/share/vm/gc_implementation/g1/concurrentMark.hpp	2013-05-10 15:55:58.160885064 +0200
+++ new/src/share/vm/gc_implementation/g1/concurrentMark.hpp	2013-05-10 15:55:58.076885065 +0200
@@ -44,9 +44,6 @@
  public:
   G1CMIsAliveClosure(G1CollectedHeap* g1) : _g1(g1) { }
 
-  void do_object(oop obj) {
-    ShouldNotCallThis();
-  }
   bool do_object_b(oop obj);
 };