| // Copyright (c) 2022, 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. |
| |
| // @dart=2.19 |
| |
| class Base {} |
| |
| class Mixin1a extends Base {} |
| |
| class Mixin1b extends Mixin1a {} |
| |
| class C1a extends Base with Mixin1a {} |
| |
| class C1b extends Base with Mixin1b {} |
| |
| mixin Mixin2a on Base {} |
| |
| mixin Mixin2b on Base, Mixin2a {} |
| |
| class C2a extends Base with Mixin2a {} |
| |
| class C2b extends Base with Mixin2a, Mixin2b {} |
