| // 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. | |
| typedef F = Function<Y>(Y); | |
| class A<X> {} | |
| A<F> foo(A<F> x) => throw 42; | |
| class B extends A<F> {} | |
| class C<Z extends F> {} | |
| bar<V extends F>() => throw 42; | |
| main() {} |