| // Copyright (c) 2024, 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 syntax error if a built-in identifier is used as the |
| /// declared name of a prefix, class, mixin, enum, type parameter, type alias, |
| /// or extension. |
| /// |
| /// @description Checks that it is a compile-time error if a built-in identifier |
| /// `interface` is used as the name of an extension. |
| /// @author sgrekhov22@gmail.com |
| |
| extension interface on int {} |
| // ^^^^^^^^^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| |
| main() { |
| } |
