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// 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 compile error is not thrown when function alias with
/// well bounded type parameters is declared.
/// @Issue 36959, 37050, 42415
/// @author iarkh@unipro.ru
class A<T extends A<T>> {}
typedef B<X extends A<X>> = X Function(X);
main() {
B<A> b2;
B<void> b4;
B<Never> b5;
B<A<dynamic>> b6;
B<A<void>> b8;
B<A<Never>> b9;
}