// Copyright (c) 2022, 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.

class Class<T> {}

class ConcreteClass implements Class<ConcreteClass> {}

typedef F<X extends Class<X>> = X;

class G<X extends Class<X>> {}

class Class1 {}

test() {
  F; // Ok
  F<dynamic>; // Ok
  F<Class>; // Ok
  F<Class<dynamic>>; // Ok
  F<ConcreteClass>; // Ok
  F<Class<ConcreteClass>>; // Ok
  F<Object>; // Error
  F<int>; // Error
  G; // Ok
  G<dynamic>; // Ok
  G<Class>; // Ok
  G<Class<dynamic>>; // Ok
  G<ConcreteClass>; // Ok
  G<Class<ConcreteClass>>; // Ok
  G<Object>; // Error
  G<int>; // Error
}

main() {}