| // TODO(multitest): This was automatically migrated from a multitest and may |
| // contain strange or dead code. |
| |
| // @dart = 2.9 |
| |
| // Copyright (c) 2015, 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. |
| |
| // Regression test for issue 21912. |
| |
| class A {} |
| |
| class B extends A {} |
| |
| typedef T Function2<S, T>(S z); |
| typedef B AToB(A x); |
| typedef A BToA(B x); |
| |
| void main() { |
| { |
| Function2<Function2<A, B>, Function2<B, A>> t1; |
| Function2<AToB, BToA> t2; |
| Function2<Function2<int, double>, Function2<int, double>> left; |
| |
| |
| } |
| } |