| /* |
| * Copyright (c) 2018, 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 A mixin declaration introduces a mixin and an interface, but not a |
| * class. |
| * |
| * @description Checks that a mixin declaration introduces an interface and |
| * therefore it cannot be extended. |
| * @compile-error |
| * @author sgrekhov@unipro.ru |
| */ |
| |
| class C { |
| } |
| |
| mixin M on C { |
| } |
| |
| class MA extends M {} |
| |
| main() { |
| MA m = new MA(); |
| } |
