--- a/hotspot/src/share/vm/oops/instanceKlass.cpp	Thu Apr 26 16:24:15 2012 -0400
+++ b/hotspot/src/share/vm/oops/instanceKlass.cpp	Wed May 02 13:21:36 2012 -0400
@@ -1862,7 +1862,7 @@
       if (impl != NULL) {
         if (!is_alive->do_object_b(impl)) {
           // remove this guy
-          *start_of_implementor() = NULL;
+          *adr_implementor() = NULL;
         }
       }
     } else {