/* -*- tab-width: 2; indent-tabs-mode: nil; js-indent-level: 2 -*- */ /* This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ //----------------------------------------------------------------------------- var BUGNUMBER = 360681; var summary = 'Regression from bug 224128'; var actual = ''; var expect = ''; //----------------------------------------------------------------------------- test(); //----------------------------------------------------------------------------- function test() { printBugNumber(BUGNUMBER); printStatus (summary); expect = actual = 'No Crash'; var N = 1000; // Make an array with a hole at the end var a = Array(N); for (i = 0; i < N - 1; ++i) a[i] = 1; // array_sort due for array with N elements with allocates a temporary vector // with 2*N. Lets create strings that on 32 and 64 bit CPU cause allocation // of the same amount of memory + 1 word for their char arrays. After we GC // strings with a reasonable malloc implementation that memory will be most // likely reused in array_sort for the temporary vector. Then the bug causes // accessing the one-beyond-the-aloocation word and re-interpretation of // 0xFFF0FFF0 as GC thing. var str1 = Array(2*(2*N + 1) + 1).join(String.fromCharCode(0xFFF0)); var str2 = Array(4*(2*N + 1) + 1).join(String.fromCharCode(0xFFF0)); gc(); str1 = str2 = null; gc(); var firstCall = true; a.sort(function (a, b) { if (firstCall) { firstCall = false; gc(); } return a - b; }); reportCompare(expect, actual, summary); }