| // Copyright (c) 2019, 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=2.9 |
| // The test checks that 'covariant' bit is propagated from the superclass of the |
| // mixin application to the mixin application and its subclasses. |
| |
| class A { |
| void foo(covariant num x) {} |
| } |
| |
| class B { |
| void foo(num x) {} |
| } |
| |
| class C { |
| void foo(num x) {} |
| } |
| |
| class D extends A with B implements C { |
| // This member declaration shouldn't result in a compile-time error. |
| void foo(int x) {} |
| } |
| |
| main() {} |