| // 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. |
| |
| /// @assertion It is an error for a class to extend, implement, or mixin a type |
| /// of the form T? for any T. |
| /// |
| /// @description Check that it is an error for a class to extend, implement, |
| /// or mixin a type of the form T? for any T. Test legacy pre-NNBD types |
| /// @author sgrekhov@unipro.ru |
| /// @issue 40949 |
| |
| // Requirements=nnbd-weak |
| import "legacy_lib.dart"; |
| |
| class C1 extends A? {} |
| // ^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| class C2 implements I? {} |
| // ^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| class C3 = A with M?; |
| // ^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| class C4 = A with M implements I?; |
| // ^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| class C5 extends A with M? {} |
| // ^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| mixin M1 on A? {} |
| // ^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| mixin M2 on A, M? {} |
| // ^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| mixin M3 on A implements I? {} |
| // ^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| |
| main() { |
| } |
