JSTests/test262/test/built-ins/Array/prototype/filter/15.4.4.20-1-5.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.filter
es5id: 15.4.4.20-1-5
description: Array.prototype.filter applied to number primitive
---*/

        function callbackfn(val, idx, obj) {
            return obj instanceof Number;
        }

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

            var newArr = Array.prototype.filter.call(2.5, callbackfn);

assert.sameValue(newArr[0], 1, 'newArr[0]');