tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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regress-192414.js (1987B)

      1 /* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
      2 /* This Source Code Form is subject to the terms of the Mozilla Public
      3 * License, v. 2.0. If a copy of the MPL was not distributed with this
      4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
      5 
      6 /*
      7 *
      8 * Date:    08 February 2003
      9 * SUMMARY: Parser recursion should check stack overflow
     10 *
     11 * See http://bugzilla.mozilla.org/show_bug.cgi?id=192414
     12 *
     13 */
     14 //-----------------------------------------------------------------------------
     15 var UBound = 0;
     16 var BUGNUMBER = 192414;
     17 var summary = 'Parser recursion should check stack overflow';
     18 var status = '';
     19 var statusitems = [];
     20 var actual = '';
     21 var actualvalues = [];
     22 var expect= '';
     23 var expectedvalues = [];
     24 
     25 /*
     26 * We will form an eval string to set the result-variable |actual|.
     27 * To get a feel for this, suppose N were 3. Then the eval string is
     28 * 'actual = (1&(1&(1&1)));' The expected value after eval() is 1.
     29 */
     30 status = inSection(1);
     31 var N = 10000;
     32 var left = repeat_str('(1&', N);
     33 var right = repeat_str(')', N);
     34 var str = 'actual = '.concat(left, '1', right, ';');
     35 try
     36 {
     37  eval(str);
     38 }
     39 catch (e)
     40 {
     41  /*
     42   * An exception during this eval is OK, as the runtime can throw one
     43   * in response to too deep recursion. We haven't crashed; good!
     44   */
     45  actual = 1;
     46 }
     47 expect = 1;
     48 addThis();
     49 
     50 
     51 
     52 //-----------------------------------------------------------------------------
     53 test();
     54 //-----------------------------------------------------------------------------
     55 
     56 
     57 
     58 function repeat_str(str, repeat_count)
     59 {
     60  var arr = new Array(--repeat_count);
     61  while (repeat_count != 0)
     62    arr[--repeat_count] = str;
     63  return str.concat.apply(str, arr);
     64 }
     65 
     66 
     67 function addThis()
     68 {
     69  statusitems[UBound] = status;
     70  actualvalues[UBound] = actual;
     71  expectedvalues[UBound] = expect;
     72  UBound++;
     73 }
     74 
     75 
     76 function test()
     77 {
     78  printBugNumber(BUGNUMBER);
     79  printStatus(summary);
     80 
     81  for (var i=0; i<UBound; i++)
     82  {
     83    reportCompare(expectedvalues[i], actualvalues[i], statusitems[i]);
     84  }
     85 }