| // 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. |
| |
| /// @assertion Union cannot be implemented or used as a mixin |
| /// |
| /// @description Checks that it is a compile error if Union is used as a mixin |
| /// @author sgrekhov@unipro.ru |
| /// @issue 44935 |
| |
| import "dart:ffi"; |
| |
| class U1 extends Object with Union { |
| // ^^^^^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| } |
| |
| void main() { |
| U1? u1; |
| } |
