| // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file | |
| // for details. All rights reserved. Use of this source code is governed by a | |
| // BSD-style license that can be found in the LICENSE file. | |
| library lib_b; | |
| import '4434_lib.dart'; | |
| class B extends A { } | |
| main() { | |
| B b = new B(); | |
| b.x(b); | |
| } |