| /* |
| * 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 if the arity of the user-declared |
| * operator - is not 0 or 1. |
| * The - operator is unique in that two overloaded versions are permitted. |
| * If the operator has no arguments, it denotes unary minus. |
| * If it as an argument, it denotes binary subtraction. |
| * @description Checks that a compile-time error is produced if a user-defined |
| * operator - specifies two parameters. |
| * @compile-error |
| * @author kaigorodov |
| * @reviewer rodionov |
| */ |
| |
| class C { |
| operator -(var val, var val2) {} |
| } |
| |
| main() { |
| try { |
| bool b = (new C() - new C()); |
| } catch (ex) {} |
| } |
