*** old/src/share/vm/opto/callnode.cpp	Mon May 19 21:08:27 2008
--- new/src/share/vm/opto/callnode.cpp	Mon May 19 21:08:27 2008

*** 676,687 ****
--- 676,686 ----
            at_k->is_loaded() &&
            at_k->is_java_klass() &&
            !at_k->is_interface()) {
          // If we have found an argument matching addr_t, check if the field
          // at the specified offset is modified.
!         int at_idx = C->get_alias_index(at_ptr->add_offset(offset)->isa_oopptr());
          if (base_idx == at_idx &&
!         if ((adr_k->is_subclass_of(at_k) || at_k->is_subclass_of(adr_k)) &&
              (bcea == NULL ||
               bcea->is_arg_modified(i - TypeFunc::Parms, offset, size))) {
            return true;
          }
        }