| /* |
| * 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 It is a compile error if a factory returns a non-null object whose |
| * type is not a subtype of its actual return type. |
| * @description Checks that returning an object of subtype of M |
| * from factory constructor M does not produce an error. |
| * @author kaigorodov |
| */ |
| |
| abstract class A { |
| A(); |
| factory A.f() => new C(); |
| } |
| |
| class C extends A {} |
| |
| main() { |
| new A.f(); |
| } |
