#40624 [Opn->Fbk]: pcrelib broken with php 4.4.5

ID: 40624 Updated by: tony2001@php.net Reported By: test_junk at hotmail dot it -Status: Open +Status: Feedback Bug Type: PCRE related Operating System: linux 2.4 i386 PHP Version: 4.4.5 New Comment: Thank you for this bug report. To properly diagnose the problem, we need a short but complete example script to be able to reproduce this bug ourselves. A proper reproducing script starts with <?php and ends with ?>, is max. 10-20 lines long and does not require any external resources such as databases, etc. If the script requires a database to demonstrate the issue, please make sure it creates all necessary tables, stored procedures etc. Please avoid embedding huge scripts into the report. Previous Comments: ------------------------------------------------------------------------ [2007-02-26 00:24:41] test_junk at hotmail dot it This snapshot is identical to the one I tested as far as I am seeing comparing the 2 archives, however which files did you modify? The only way I have to trigger this bug is recompiling the engine on a production server but since it breaks several websites (Drupal seems to be most affected) I can do it only at night so I can perform a limited number of attempts. ------------------------------------------------------------------------ [2007-02-25 23:03:49] nlopess@php.net Please try using this CVS snapshot: http://snaps.php.net/php4-STABLE-latest.tar.gz For Windows: http://snaps.php.net/win32/php4-win32-STABLE-latest.zip sorry, can you please try again a new snapshot? I made some changes a few hours ago and I don't know if they made their way in the snapshot you tested. If it still doesn't work, please post the entire backtrace (or link to an external page if it's too big). Also please try to isolate the code that triggers the bug. ------------------------------------------------------------------------ [2007-02-25 22:14:37] test_junk at hotmail dot it I compiled CVS 200702251930 but unfortunately the problem persists. ------------------------------------------------------------------------ [2007-02-25 18:06:19] derick@php.net Please try using this CVS snapshot: http://snaps.php.net/php4-STABLE-latest.tar.gz For Windows: http://snaps.php.net/win32/php4-win32-STABLE-latest.zip PCRE was upgraded again in 4.4.6rc1, could you please try that? ------------------------------------------------------------------------ [2007-02-25 03:04:19] test_junk at hotmail dot it Description: ------------ Recent update to php 4.4.5 broke PCRE regex support. The issue showed up upgrading to 4.4.5 installed as apache module (1.3.37 both on 2.4 and 2.6 kernels) and was resolved downgrading back to 4.4.4 I could trigger a segfault with several applications but I was not able to detect the chunk of php code responsible of it. Actual result: -------------- segfault... #0 match (eptr=0x0, ecode=0x0, offset_top=0, md=0x0, ims=0, eptrb=0x0, flags=0, rdepth=0) at /sources/php-4.4.5/ext/pcre/pcrelib/pcre_exec.c:517 Cannot access memory at address 0xbf7fff30 ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=40624&edit=1