text: /// Copyright (c) 2012 Ecma International.  All rights reserved. 
  /// Ecma International makes this code available under the terms and conditions set
  /// forth on http://hg.ecmascript.org/tests/test262/raw-file/tip/LICENSE (the 
  /// "Use Terms").   Any redistribution of this code must retain the above 
  /// copyright and this notice and otherwise comply with the Use Terms.
  /**
   * @path ch15/15.4/15.4.4/15.4.4.15/15.4.4.15-2-4.js
   * @description Array.prototype.lastIndexOf when 'length' is own data property that overrides an inherited data property on an Array
   */
  
  
  function testcase() {
  
          var targetObj = {};
          var arrProtoLen;
          try {
              arrProtoLen = Array.prototype.length;
              Array.prototype.length = 0;
              return [0, targetObj, 2].lastIndexOf(targetObj) === 1;
          } finally {
              Array.prototype.length = arrProtoLen;
          }
      }
  runTestCase(testcase);
  