gecko/js/tests/e4x/extensions/regress-352846-01.js

82 lines
2.7 KiB
JavaScript

/* -*- Mode: java; tab-width:8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is JavaScript Engine testing utilities.
*
* The Initial Developer of the Original Code is
* Mozilla Foundation.
* Portions created by the Initial Developer are Copyright (C) 2006
* the Initial Developer. All Rights Reserved.
*
* Contributor(s): Igor Bukanov
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
gTestfile = 'regress-352846-01.js';
var BUGNUMBER = 352846;
var summary = 'Passing unrooted value to OBJ_DEFAULT_VALUE is GC hazard';
var actual = 'No Crash';
var expect = 'No Crash';
printBugNumber(BUGNUMBER);
START(summary);
function prepare_xml()
{
delete XML.prototype.function::toString;
Object.prototype.toString getter = toSource_getter;
return new XML("<a>xml_text</a>");
}
var counter = 0;
function toSource_getter()
{
// Make sure that lastInternalResult does not contain prepare_xml
var tmp = { toSource: function() { return [1,2,3]; } };
uneval(tmp);
if (counter++ < 2) return undefined;
// run GC onr overwrite the heap
if (typeof gc == "function") gc();
var x = 1e-100;
for (var i = 0; i != 50000; ++i)
var x2 = x / 4;
// Return a function that would access this in non-trivial way to
// check if prepare_xml() was rooted.
return function() { return this.toXMLString(); };
}
uneval({ toSource: prepare_xml });
TEST(1, expect, actual);
END();