| /* |
| * 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-time error to declare an optional parameter in an operator. |
| * @description Checks that a compile-time error is produced if a user-defined |
| * operator []= specifies one optional positional parameter in addition to the two required ones. |
| * @compile-error |
| * @author rodionov |
| * @reviewer iefremov |
| */ |
| |
| class C { |
| operator[]=(var x, var y, [var o]) {} |
| } |
| |
| main() { |
| try { |
| C c = new C(); |
| c[0] = null; |
| } catch (e) {} |
| } |
