Language/Types/Type_Aliases/self_reference_t15.dart

// Copyright (c) 2011, 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 self reference in a typedef, either directly, or recursively
/// via another typedef, is a compile time error.
/// @description Checks that it is compile error if two typedefs are mutually
/// recursive via their return types.
/// @compile-error
/// @author ilya


typedef G F();
typedef F G();

main() {
  F? x;
}