| // Copyright (c) 2021, 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=2.12 | |
| typedef A = ; | |
| class B {} | |
| class C = A with B; | |
| main() {} |