#34695 [Opn->Fbk]: preg_replace(): {}-expresion overflow

From: Date: Sat, 01 Oct 2005 08:10:48 +0000
Subject: #34695 [Opn->Fbk]: preg_replace(): {}-expresion overflow
References: 1  Groups: php.bugs 
Request: Send a blank email to php-bugs+get-85836@lists.php.net to get a copy of this message 
 ID:               34695
 Updated by:       johannes@php.net
 Reported By:      php at koterov dot ru
-Status:           Open
+Status:           Feedback
 Bug Type:         Reproducible crash
 Operating System: Windows XP
 PHP Version:      4.4.0
 New Comment:

Please try using this CVS snapshot:

  http://snaps.php.net/php4-STABLE-latest.tar.gz
 
For Windows:
 
  http://snaps.php.net/win32/php4-win32-STABLE-latest.zip


Previous Comments:
------------------------------------------------------------------------

[2005-09-30 23:47:44] php at koterov dot ru

Description:
------------
PCRE /X{1,Y}/ for large Y (near 1000) does not work for some X on
Windows (apache 1.3+mod_php 4.4.0 or 4.3.10). In Unix (Linux) -
everything is fine. Maybe stack overflow?

Reproduce code:
---------------
<?
define('MAXLEN', 1000);
$text = str_repeat('a', 10000);
$text = preg_replace('/ ( (?: [^<] | < [^>]* >){1,'.MAXLEN.'}) .*
/xs',
'$1', $text);
die('ok');
?>

Expected result:
----------------
ok

Actual result:
--------------
nothing (php exits, but no windows GPF)


------------------------------------------------------------------------


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