| /* | |
| * 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 not a class. | |
| * @compile-error | |
| * @author sgrekhov@unipro.ru | |
| */ | |
| class C { | |
| } | |
| mixin M on C { | |
| } | |
| main() { | |
| M m = new M(); | |
| } |