js/tests/js1_5/Regress/regress-280769-4.js

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* ***** BEGIN LICENSE BLOCK *****
   3  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
   4  *
   5  * The contents of this file are subject to the Mozilla Public License Version
   6  * 1.1 (the "License"); you may not use this file except in compliance with
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  11  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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  14  *
  15  * The Original Code is JavaScript Engine testing utilities.
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  19  * Portions created by the Initial Developer are Copyright (C) 2005
  20  * the Initial Developer. All Rights Reserved.
  21  *
  22  * Contributor(s): Igor Bukanov  <igor@mir2.org>
  23  *                 Bob Clary <bob@bclary.com>
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  25  * Alternatively, the contents of this file may be used under the terms of
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  36  *
  37  * ***** END LICENSE BLOCK ***** */
  38
  39 var gTestfile = 'regress-280769-4.js';
  40 //-----------------------------------------------------------------------------
  41 var BUGNUMBER = 280769;
  42 var summary = 'Do not overflow 64K length of char sequence in RegExp []';
  43 var actual = 'No Crash';
  44 var expect = 'No Crash';
  45
  46 printBugNumber(BUGNUMBER);
  47 printStatus (summary);
  48
  49
  50 var N = 20 * 1000; // It should be that N*6  > 64K and N < 32K
  51
  52 var prefixes = ["000", "00", "0"];
  53
  54 function to_4_hex(i)
  55 {
  56   var printed = i.toString(16);
  57   if (printed.length < 4) {
  58     printed= prefixes[printed.length - 1]+printed;
  59   }
  60   return printed;
  61
  62 }
  63
  64 var a = new Array(N);
  65 for (var i = 0; i != N; ++i) {
  66   a[i] = to_4_hex(2*i);
  67 }
  68
  69 var str = '[\\u'+a.join('\\u')+']';
  70 // str is [\u0000\u0002\u0004...\u<printed value of 2N>]
  71
  72 var re = new RegExp(str);
  73
  74 var string_to_match = String.fromCharCode(2 * (N - 1));
  75
  76 var value = re.exec(string_to_match);
  77
  78 var expect =  string_to_match;
  79 var actual = value ? value[0] : value;
  80
  81 reportCompare(expect, actual, summary);