ID: 40909
User updated by: adrynet at tiscali dot it
Reported By: adrynet at tiscali dot it
Status: Bogus
Bug Type: *Regular Expressions
Operating System: Linux Fedora / Redhat / CentOS
PHP Version: 4.4.6
New Comment:
>You're asking wrong person, I can't answer your question since I'm
not
the author of PCRE.
Thanks for reply Tony. Do you know if 4.4.6 uses a new release of PCRE
and so we have this behaviour?
Have a nice day
Adriano C.
Previous Comments:
------------------------------------------------------------------------
[2007-03-26 10:59:43] [EMAIL PROTECTED]
>So why in this release PCRE should have "more appetite" on the same
usage
You're asking wrong person, I can't answer your question since I'm not
the author of PCRE.
------------------------------------------------------------------------
[2007-03-26 10:48:41] adrynet at tiscali dot it
Hi Tony,
It's strange because with PHP 4.4.6 we got Segmentation Fault using
preg_match_all() on with same regex pattern on the same source text that
both in previous versions of PHP 4.4.x and 5.x works perfectly.
So why in this release PCRE should have "more appetite" on the same
usage?
Have a nice day
Adriano C.
------------------------------------------------------------------------
[2007-03-26 10:07:35] [EMAIL PROTECTED]
Yet another PCRE stack overflow.
We got new INI options in PHP5 in order to "limit" the appetite of
PCRE, though they do not really fix the problem in PCRE library, which
is known to overflow the stack on certain expressions and there are no
plans on adding these options to PHP4.
------------------------------------------------------------------------
[2007-03-25 22:36:10] judas dot iscariote at gmail dot com
reproducible with CVS 5_2 too.
gdb --args ./sapi/cli/php ~/preg.php
(gdb) run
Starting program: /home/cristian/php5/sapi/cli/php
/home/cristian/preg.php
Program received signal SIGSEGV, Segmentation fault.
0x0000000000453d2d in match (eptr=Cannot access memory at address
0x7fff5c974b60
) at /home/cristian/php5/ext/pcre/pcrelib/pcre_exec.c:372
372 {
(gdb) bt full
#0 0x0000000000453d2d in match (eptr=Cannot access memory at address
0x7fff5c974b60
) at /home/cristian/php5/ext/pcre/pcrelib/pcre_exec.c:372
rrc = Cannot access memory at address 0x7fff5c974c48
(gdb)
------------------------------------------------------------------------
[2007-03-24 17:46:21] adrynet at tiscali dot it
Description:
------------
Good morning,
executing preg_match_all() function with this Regular Expression causes
a PHP Segmentation Fault.
The following code works correctly both with previous versions of PHP
and PHP 5.2.1.
Thank you for support
Adriano C.
Reproduce code:
---------------
<?php
$pattern =
"/\s([\w_\.\/]+)(?:=([\'\"]?(?:[\w\d\s\?=\(\)\.,'_#\/\\:;&-]|(?:\\\\\"|\\\')?)+[\'\"]?))?/";
$context = "<simpletag an_attribute=\"simpleValueInside\">";
$match = array();
if ($result =preg_match_all($pattern, $context, $match))
{
var_dump($result);
}
?>
Expected result:
----------------
int(1)
Actual result:
--------------
Segmentation Fault
------------------------------------------------------------------------
--
Edit this bug report at http://bugs.php.net/?id=40909&edit=1
