michael@0: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: /*
michael@0:  *
michael@0:  * Date:    08 February 2003
michael@0:  * SUMMARY: Parser recursion should check stack overflow
michael@0:  *
michael@0:  * See http://bugzilla.mozilla.org/show_bug.cgi?id=192414
michael@0:  *
michael@0:  */
michael@0: //-----------------------------------------------------------------------------
michael@0: var UBound = 0;
michael@0: var BUGNUMBER = 192414;
michael@0: var summary = 'Parser recursion should check stack overflow';
michael@0: var status = '';
michael@0: var statusitems = [];
michael@0: var actual = '';
michael@0: var actualvalues = [];
michael@0: var expect= '';
michael@0: var expectedvalues = [];
michael@0: 
michael@0: /*
michael@0:  * We will form an eval string to set the result-variable |actual|.
michael@0:  * To get a feel for this, suppose N were 3. Then the eval string is
michael@0:  * 'actual = (1&(1&(1&1)));' The expected value after eval() is 1.
michael@0:  */
michael@0: status = inSection(1);
michael@0: var N = 10000;
michael@0: var left = repeat_str('(1&', N);
michael@0: var right = repeat_str(')', N);
michael@0: var str = 'actual = '.concat(left, '1', right, ';');
michael@0: try
michael@0: {
michael@0:   eval(str);
michael@0: }
michael@0: catch (e)
michael@0: {
michael@0:   /*
michael@0:    * An exception during this eval is OK, as the runtime can throw one
michael@0:    * in response to too deep recursion. We haven't crashed; good!
michael@0:    */
michael@0:   actual = 1;
michael@0: }
michael@0: expect = 1;
michael@0: addThis();
michael@0: 
michael@0: 
michael@0: 
michael@0: //-----------------------------------------------------------------------------
michael@0: test();
michael@0: //-----------------------------------------------------------------------------
michael@0: 
michael@0: 
michael@0: 
michael@0: function repeat_str(str, repeat_count)
michael@0: {
michael@0:   var arr = new Array(--repeat_count);
michael@0:   while (repeat_count != 0)
michael@0:     arr[--repeat_count] = str;
michael@0:   return str.concat.apply(str, arr);
michael@0: }
michael@0: 
michael@0: 
michael@0: function addThis()
michael@0: {
michael@0:   statusitems[UBound] = status;
michael@0:   actualvalues[UBound] = actual;
michael@0:   expectedvalues[UBound] = expect;
michael@0:   UBound++;
michael@0: }
michael@0: 
michael@0: 
michael@0: function test()
michael@0: {
michael@0:   enterFunc('test');
michael@0:   printBugNumber(BUGNUMBER);
michael@0:   printStatus(summary);
michael@0: 
michael@0:   for (var i=0; i<UBound; i++)
michael@0:   {
michael@0:     reportCompare(expectedvalues[i], actualvalues[i], statusitems[i]);
michael@0:   }
michael@0: 
michael@0:   exitFunc ('test');
michael@0: }