#40630 [Opn->Fbk]: preg_match_all with a particular regexp causes run-away php/apache process

ID: 40630 Updated by: nlopess@php.net Reported By: mfburdett at gmail dot com -Status: Open +Status: Feedback Bug Type: PCRE related Operating System: FreeBSD 6.2 PHP Version: 5.2.1 New Comment: Please try using this CVS snapshot: http://snaps.php.net/php5.2-latest.tar.gz For Windows: http://snaps.php.net/win32/php5.2-win32-latest.zip Previous Comments: ------------------------------------------------------------------------ [2007-02-25 20:02:16] mfburdett at gmail dot com Description: ------------ preg_match_all with a particular regexp causes a run-away Apache/PHP processes which consumes all available CPU. This is on amd64 architecture; FreeBSD 6.2; PCRE 7.0 and PHP 5.2.1 installed through FreeBSD ports. Reproduce code: --------------- $regexp = '%(?:^|,\ *)("(?>[^"]*)(?>""[^"]* )*"|(?: [^",]*))%x'; preg_match_all($regexp, $string, $matches); Expected result: ---------------- It should compile and execute. Actual result: -------------- Process consumes all available CPU until killed. ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=40630&edit=1