| // 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 instance method |
| /// overrides an abstract method and has a different default value for its |
| /// optional parameter. |
| /// |
| /// See https://github.com/dart-lang/sdk/issues/34437#issuecomment-432093691 |
| /// |
| /// @issue 27476 |
| /// @author msyabro |
| |
| |
| abstract class A { |
| foo([x = 1]); |
| } |
| |
| class C extends A { |
| foo([x = '']) { |
| } |
| } |
| |
| main() { |
| new C().foo(1); |
| } |