| // 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 Any use of a type `T` which is not well-bounded is a |
| /// compile-time error. |
| /// |
| /// @description Checks that it is not an error to declare a non-function type |
| /// alias with a type parameter whose bound is a top type |
| /// @author iarkh@unipro.ru |
| |
| class A<T> {} |
| |
| typedef Void = void; |
| |
| typedef B1<X extends Object?> = A<X>; |
| typedef B2<X extends dynamic> = A<X>; |
| typedef B3<X extends Void> = A<X>; |
| |
| main() { |
| print(B1); |
| print(B2); |
| print(B3); |
| } |
