| // Copyright (c) 2024, 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. |
| |
| void cfeAwait<XF extends F>(XF xf) async { |
| (await xf).st<E<int>>(); |
| (await xf).st<E<int>>; |
| |
| var v1 = await xf; |
| v1.toRadixString(16); |
| int v2 = v1; |
| |
| int? v3 = v1; |
| v1 = v3; |
| } |
| |
| extension type F(Future<int> _) implements Future<int> {} |
| |
| void main() { |
| cfeAwait<F>(F(Future<int>.value(1))); |
| } |
| |
| extension Est<T> on T { |
| void st<X extends E<T>>() {} |
| } |
| |
| typedef E<S> = S Function(S); |
