From: o dot veujoz at free dot fr
Operating system: Windows XP
PHP version: 5.1.5
PHP Bug Type: PCRE related
Bug description: RegExp cause server crash
Description:
------------
Since php 5.1.5 & 5.1.6 the following piece of code cause a server crash,
either on IIS 5.1 / Apache 2.0.59 (under windows XP, not tried on other
platform).
The regexp is from Pear::Wiki_Text library and was working with older PHP
versions (including 5.1.4).
Under IIS, I've got the message : "PHP has encountered a Stack overflow"
No message with Apache...
I read a lot of things on this error (such as bad regexp writing), but
this time it is not a specific IIS case.
Removing the PCRE_DOTALL regexp option and the script works (but the
result is not what expected...).
I read the bug #28317 and was wondering if it wasn't the same compilation
problem ("Thus NO_RECURSE should be set in win32 compiler options").
Best regards,
Olivier (from France, sorry for the spelling faults)
Reproduce code:
---------------
<?php
// Uncomment one line and it works again ??
$text = '<code type="php">
include_once("adodb/session/adodb-session2.php");
ADOdb_Session::config($driver=\'mysql\', $host, $user, $password,
$database,$options=false);
ADOdb_Session::config($driver=\'mysql\', $host, $user, $password,
$database,$options=false);
ADOdb_Session::config($driver=\'mysql\', $host, $user, $password,
$database,$options=false);
ADOdb_Session::config($driver=\'mysql\', $host, $user, $password,
$database,$options=false);
ADOdb_Session::config($driver=\'mysql\', $host, $user, $password,
$database,$options=false);
ADOdb_Session::config($driver=\'mysql\', $host, $user, $password,
$database,$options=false);
ADOdb_Session::config($driver=\'mysql\', $host, $user, $password,
$database,$options=false);
session_start();
</code>';
$regex = ';^<code(\s[^>]*)?>((?:(?R)|.)*?)\n</code>(\s|$);msi';
preg_match_all($regex, $text, $match);
print '<xmp>';
print_r($match);
print '</xmp>';
?>
--
Edit bug report at http://bugs.php.net/?id=38594&edit=1
--
Try a CVS snapshot (PHP 4.4):
http://bugs.php.net/fix.php?id=38594&r=trysnapshot44
Try a CVS snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=38594&r=trysnapshot52
Try a CVS snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=38594&r=trysnapshot60
Fixed in CVS: http://bugs.php.net/fix.php?id=38594&r=fixedcvs
Fixed in release:
http://bugs.php.net/fix.php?id=38594&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=38594&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=38594&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=38594&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=38594&r=support
Expected behavior: http://bugs.php.net/fix.php?id=38594&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=38594&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=38594&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=38594&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=38594&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=38594&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=38594&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=38594&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=38594&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=38594&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=38594&r=mysqlcfg
