| // 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 a compile-time error if a class C is a superclass of itself. |
| /// @description Checks that it is a compile-time error if a class attempts to |
| /// extend itself indirectly, by transition. Test type aliases |
| /// @author sgrekhov@unipro.ru |
| |
| class A extends DAlias {} |
| // ^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| class B extends A {} |
| // ^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| class C extends B {} |
| // ^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| class D extends C {} |
| // ^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| |
| typedef DAlias = D; |
| |
| main() { |
| new A(); |
| } |
