text: // Copyright (c) 2012 Ecma International.  All rights reserved.
  // This code is governed by the BSD license found in the LICENSE file.
  
  /*---
  esid: sec-array.prototype.indexof
  description: >
      Array.prototype.indexOf - the length of iteration isn't changed by
      adding elements to the array during iteration
  ---*/
  
  var arr = [20];
  
  Object.defineProperty(arr, "0", {
    get: function() {
      arr[1] = 1;
      return 0;
    },
    configurable: true
  });
  
  assert.sameValue(arr.indexOf(1), -1, 'arr.indexOf(1)');
  