text: /// Copyright (c) 2012 Ecma International.  All rights reserved. 
  /**
   * @path ch15/15.4/15.4.4/15.4.4.22/15.4.4.22-7-7.js
   * @description Array.prototype.reduceRight returns initialValue if 'length' is 0 and initialValue is present (subclassed Array, length overridden with obj w/o valueOf (toString))
   */
  
  
  function testcase() {
    foo.prototype = new Array(1, 2, 3);
    function foo() {}
    var f = new foo();
    
    var o = { toString: function () { return '0';}};
    f.length = o;
    
    // objects inherit the default valueOf method of the Object object;
    // that simply returns the itself. Since the default valueOf() method
    // does not return a primitive value, ES next tries to convert the object
    // to a number by calling its toString() method and converting the
    // resulting string to a number.
  
    function cb(){}
    try {
      if(f.reduceRight(cb,1) === 1)
        return true;
    }
    catch (e) {  }  
   }
  runTestCase(testcase);
  