src/share/vm/opto/matcher.cpp

*** 1764,1775 ****
          }
          break;
        }
        case Op_ConN: {  // Convert narrow pointers above the centerline to NUL
          TypeNode *tn = n->as_Type(); // Constants derive from type nodes
!         const TypePtr* tp = tn->type()->is_narrowoop()->make_oopptr();
!         if (tp->_ptr == TypePtr::AnyNull) {
            tn->set_type(TypeNarrowOop::NULL_PTR);
          }
          break;
        }
        case Op_Binary:         // These are introduced in the Post_Visit state.
--- 1764,1775 ----
          }
          break;
        }
        case Op_ConN: {  // Convert narrow pointers above the centerline to NUL
          TypeNode *tn = n->as_Type(); // Constants derive from type nodes
!         const TypePtr* tp = tn->type()->make_ptr();
!         if (tp && tp->_ptr == TypePtr::AnyNull) {
            tn->set_type(TypeNarrowOop::NULL_PTR);
          }
          break;
        }
        case Op_Binary:         // These are introduced in the Post_Visit state.