| /* |
| * 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 It is a compile error if an instance method m1 overrides an |
| * instance member m2 and the type of m1 is not a subtype of the type of m2. |
| * @description Checks that a compile error is produced if m1 is not a subtype |
| * of m2 because their respective required parameter types are not mutually |
| * assignable. Test type aliases |
| * @compile-error |
| * @author sgrekhov@unipro.ru |
| */ |
| // SharedOptions=--enable-experiment=nonfunction-type-aliases |
| |
| class A { |
| foo(int x) {} |
| } |
| typedef AAlias = A; |
| |
| class C extends AAlias { |
| foo(String x) { |
| return x.toString(); |
| } |
| } |
| |
| main() { |
| new A().foo(2); |
| new C().foo("1"); |
| } |
