ID: 45735
User updated by: johnston dot joshua at gmail dot com
Reported By: johnston dot joshua at gmail dot com
-Status: Feedback
+Status: Open
Bug Type: PCRE related
Operating System: *
PHP Version: 5.2CVS, 5.3CVS, 6CVS (2008-08-06)
New Comment:
In my case the parens were unnecessary so I removed them which stopped
the Seg Fault.
Is there a way to handle this error from inside php?
If I set pcre.backtrack_limit to any other value will it always seg
fault if it is too low?
Previous Comments:
------------------------------------------------------------------------
[2008-08-06 16:38:30] [EMAIL PROTECTED]
Setting pcre.backtrack_limit = 10000 prevents the crash for me.
------------------------------------------------------------------------
[2008-08-06 16:36:27] [EMAIL PROTECTED]
==18470== Stack overflow in thread 1: can't grow stack to 0x7FE601FA8
==18470==
==18470== Process terminating with default action of signal 11
(SIGSEGV)
==18470== Access not within mapped region at address 0x7FE601FA8
==18470== at 0x4358C0: match (pcre_exec.c:403)
==18470== Stack overflow in thread 1: can't grow stack to 0x7FE601EC8
------------------------------------------------------------------------
[2008-08-06 15:22:20] johnston dot joshua at gmail dot com
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 this bug report at http://bugs.php.net/?id=45735&edit=1
