#28461 [Opn->Fbk]: segmentation fault when using backreferences on a long string

ID: 28461 Updated by: tony2001@php.net Reported By: xanthor at xanthor dot tk -Status: Open +Status: Feedback Bug Type: PCRE related Operating System: * PHP Version: 4.4.1 Assigned To: andrei New Comment: Thank you for this bug report. To properly diagnose the problem, we need a backtrace to see what is happening behind the scenes. To find out how to generate a backtrace, please read http://bugs.php.net/bugs-generating-backtrace.php Once you have generated a backtrace, please submit it to this bug report and change the status back to "Open". Thank you for helping us make PHP better. Previous Comments: ------------------------------------------------------------------------ [2005-11-16 04:48:51] xanthor at xanthor dot tk Still crashes with 4.4.1, increasing the length of the string. ------------------------------------------------------------------------ [2005-06-30 01:00:04] php-bugs at lists dot php dot net No feedback was provided for this bug for over a week, so it is being suspended automatically. If you are able to provide the information that was originally requested, please do so and change the status of the bug back to "Open". ------------------------------------------------------------------------ [2005-06-22 21:51:39] tony2001@php.net Please try using this CVS snapshot: http://snaps.php.net/php5-latest.tar.gz For Windows: http://snaps.php.net/win32/php5-win32-latest.zip Can't reproduce with latest PHP4 and PHP5 snapshots (PCRE was upgraded to 5.0, this might have fixed it). ------------------------------------------------------------------------ [2004-12-09 14:57:59] jorton@php.net This is the standard "PCRE uses on-stack recursion" bug which has been filed and closed umpteen times. To reproduce just increase the length of the string until exhausts your stack space. One way PHP could mitigate the issue is to to set the match_limit field in the pcre_extra structure which puts a limit on the depth of the stack recursion. ------------------------------------------------------------------------ [2004-12-09 14:13:26] xanthor at xanthor dot tk Still segfault with PHP 4.3.10RC2 and PCRE Library Version 4.5 01-December-2003 ------------------------------------------------------------------------ The remainder of the comments for this report are too long. To view the rest of the comments, please view the bug report online at http://bugs.php.net/28461 -- Edit this bug report at http://bugs.php.net/?id=28461&edit=1