| // 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. | |
| // @dart=2.9 | |
| // This is a regression test for http://dartbug.com/39421. | |
| class A {} | |
| class A {} | |
| class B { | |
| foo(List<Null> a) {} | |
| } | |
| class C extends B { | |
| foo(List<A> a) {} | |
| } | |
| main() {} |