| // 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. |
| |
| /** |
| * @assertion Let C be a concrete class that does not declare its own |
| * noSuchMethod() distinct from the one declared in class Object. |
| * It is a compile error if the implicit interface of C includes an instance |
| * member m of type F and C does not declare or inherit a corresponding |
| * non-abstract instance member m of type F' such that F' <: F. |
| * @description Checks that it is a compile error if a class does not declare |
| * nor inherit an instance method declared in class' interface. Test type alias |
| * @compile-error |
| * @author sgrekhov@unipro.ru |
| */ |
| // SharedOptions=--enable-experiment=nonfunction-type-aliases |
| |
| abstract class I { |
| foo(); |
| } |
| |
| typedef IAlias = I; |
| |
| class C implements IAlias { |
| } |
| |
| main () { |
| new C(); |
| } |
