JSTests/test262/test/built-ins/Array/prototype/reduceRight/15.4.4.22-8-c-5.js

// 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.reduceright
description: >
    Array.prototype.reduceRight - side effects produced by step 2 are
    visible when an exception occurs
---*/

var obj = {};

var accessed = false;

Object.defineProperty(obj, "length", {
  get: function() {
    accessed = true;
    return 2;
  },
  configurable: true
});
assert.throws(TypeError, function() {
  Array.prototype.reduceRight.call(obj, function() {});
});
assert(accessed, 'accessed !== true');