| // Copyright (c) 2011, 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. |
| |
| /** |
| * @assertion Unless explicitly stated otherwise, all ordinary rules that apply |
| * to methods apply to abstract methods. |
| * It is a static warning if an instance method m1 overrides an instance member |
| * m2, the signature of m2 explicitly specifies a default value for a formal |
| * parameter p and the signature of m1 specifies a different default value for |
| * p. |
| * @description Checks that it is a static warning if an abstract method |
| * overrides an abstract method and does not explicitly specify a default value |
| * for its optional parameter while the overridden method does. |
| * @author msyabro |
| * @issue 42195 |
| */ |
| |
| abstract class A { |
| foo([x = 1]); |
| } |
| |
| abstract class C extends A { |
| foo([x]); |
| } |
| |
| main() { |
| } |
