| // 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 compile error if an instance method m1 overrides an instance member |
| * m2 and m1 does not declare all the named parameters declared by m2. |
| * @description Checks that a compile error is not produced when the overriding |
| * non-abstract instance method has more named parameters than the abstract |
| * method being overridden and neither have any required parameters. |
| * @static-clean |
| * @author rodionov |
| */ |
| |
| abstract class A { |
| f({var x, var z}); |
| } |
| |
| class C extends A { |
| f({var x, var y, var z}) {} |
| } |
| |
| main() { |
| A a = new C(); |
| a.f(x: 1, z: 3); |
| new C().f(x: 1, y: 2, z: 2); |
| } |
