--- old/src/share/vm/oops/objArrayKlass.cpp	2013-12-04 17:31:29.006245671 +0100
+++ new/src/share/vm/oops/objArrayKlass.cpp	2013-12-04 17:31:28.922246248 +0100
@@ -587,7 +587,6 @@
   assert (obj->is_objArray(), "obj must be obj array");
   objArrayOop a = objArrayOop(obj);
   int size = a->object_size();
-  a->update_header(cm);
   ObjArrayKlass_OOP_ITERATE(a, p, PSParallelCompact::adjust_pointer(p))
   return size;
 }