/*
 * 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 Equality expressions test objects for equality.
 * equalityExpression:
 *   relationalExpression (equalityOperator relationalExpression)? |
 *   super equalityOperator relationalExpression
 * ;
 * equalityOperator:
 *   '==' |
 *   '!=' 
 * ;
 * An equality expression is either a relational expression, or an invocation of
 * a equality operator on either super or an expression e1, with argument e2.
 * @description Checks that two operators != can't be placed one after another.
 * @compile-error
 * @author msyabro
 * @reviewer kaigorodov
 */

main() {
  try {
    1 != != "";
  } catch(e) {}
}