#45735 [NEW]: preg_match fails with Segmentation Fault on capturing subpattern

From: Date: Wed, 06 Aug 2008 15:22:20 +0000
Subject: #45735 [NEW]: preg_match fails with Segmentation Fault on capturing subpattern
Groups: php.bugs 
Request: Send a blank email to php-bugs+get-127673@lists.php.net to get a copy of this message 
From:             johnston dot joshua at gmail dot com
Operating system: OS X and OpenSuSE
PHP version:      5.2.6
PHP Bug Type:     PCRE related
Bug description:  preg_match fails with Segmentation Fault on capturing subpattern

Description:
------------
When running a preg_match with a capturing subpattern against large input,
php crashes with a Segmentation Fault
I tested this on OS X and OpenSuSE, same result
OS X:~$ php -v
PHP 5.2.6 (cli) (built: Jul 15 2008 12:18:21) 

OpenSuSE:~# php -v
PHP 4.4.7 (cgi) (built: May 12 2008 10:19:51)

Reproduce code:
---------------
<?php
preg_match("/http:\/\/(.)+\.ru/i", str_repeat("http://google.ru", 2000));
?>

Expected result:
----------------
PHP should handle the error or something other than letting PCRE crash php

Actual result:
--------------
jjohnston:~$ php -r 'preg_match("/http:\/\/(.)+\.ru/i",
str_repeat("http://google.ru", 2000));'
Segmentation fault

-- 
Edit bug report at http://bugs.php.net/?id=45735&edit=1
-- 
Try a CVS snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=45735&r=trysnapshot52
Try a CVS snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=45735&r=trysnapshot53
Try a CVS snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=45735&r=trysnapshot60
Fixed in CVS:                 http://bugs.php.net/fix.php?id=45735&r=fixedcvs
Fixed in release:             http://bugs.php.net/fix.php?id=45735&r=alreadyfixed
Need backtrace:               http://bugs.php.net/fix.php?id=45735&r=needtrace
Need Reproduce Script:        http://bugs.php.net/fix.php?id=45735&r=needscript
Try newer version:            http://bugs.php.net/fix.php?id=45735&r=oldversion
Not developer issue:          http://bugs.php.net/fix.php?id=45735&r=support
Expected behavior:            http://bugs.php.net/fix.php?id=45735&r=notwrong
Not enough info:              http://bugs.php.net/fix.php?id=45735&r=notenoughinfo
Submitted twice:              http://bugs.php.net/fix.php?id=45735&r=submittedtwice
register_globals:             http://bugs.php.net/fix.php?id=45735&r=globals
PHP 4 support discontinued:   http://bugs.php.net/fix.php?id=45735&r=php4
Daylight Savings:             http://bugs.php.net/fix.php?id=45735&r=dst
IIS Stability:                http://bugs.php.net/fix.php?id=45735&r=isapi
Install GNU Sed:              http://bugs.php.net/fix.php?id=45735&r=gnused
Floating point limitations:   http://bugs.php.net/fix.php?id=45735&r=float
No Zend Extensions:           http://bugs.php.net/fix.php?id=45735&r=nozend
MySQL Configuration Error:    http://bugs.php.net/fix.php?id=45735&r=mysqlcfg

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