| // Copyright (c) 2018, 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. |
| |
| // This test checks that contravariant occurrences of mutually dependent type |
| // variables in the bounds of all of these type variables are replaced with |
| // Null. |
| |
| class D<X extends void Function(X, Y), Y extends void Function(X, Y)> {} |
| |
| D d = throw ''; |
| |
| class E<X extends void Function(X)> {} |
| |
| E e = throw ''; |
| |
| main() {} |
