JSTests/test262/test/built-ins/Array/prototype/reduceRight/15.4.4.22-1-5.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 applied to number primitive
---*/

var accessed = false;

function callbackfn(prevVal, curVal, idx, obj) {
  accessed = true;
  return obj instanceof Number;
}

Number.prototype[0] = 1;
Number.prototype.length = 1;

assert(Array.prototype.reduceRight.call(2.5, callbackfn, 1), 'Array.prototype.reduceRight.call(2.5, callbackfn, 1) !== true');
assert(accessed, 'accessed !== true');