Bug #65393 [Opn->Fbk]: SIGSEGV

Edit report at https://bugs.php.net/bug.php?id=65393&edit=1 ID: 65393 Updated by: yohgaki@php.net Reported by: lukyrys at gmail dot com Summary: SIGSEGV -Status: Open +Status: Feedback Type: Bug Package: PCRE related Operating System: Debian 7.1 PHP Version: 5.4.17 Block user comment: N Private report: N New Comment: Cannot reproduce w/o input. php > $html = file_get_contents('http://edition.cnn.com/'); php > preg_match_all('#<a.*?href="([^<>]*?)\?img_id=(\d+)"\s*>((?<!href).)* <img.*?src="(.*?)"#i',$html,$outA); php > var_dump($outA); array(5) { [0]=> array(0) { } [1]=> array(0) { } [2]=> array(0) { } [3]=> array(0) { } [4]=> array(0) { } } php > Could you provide short self contained "complete" script that reproduce segfault? Previous Comments: ------------------------------------------------------------------------ [2013-08-05 12:14:26] lukyrys at gmail dot com Description: ------------ Hello, i have a problem with php when i use pcre regexp ((?<!href).) Test script: --------------- preg_match_all('#<a.*?href="([^<>]*?)\?img_id=(\d+)"\s*>((?<!href).)*<img.*?src="(.*?)"#i',$html,$outA) Expected result: ---------------- array Actual result: -------------- Reading symbols from /usr/bin/php...(no debugging symbols found)...done. (gdb) run /var/www/502.cz/web/nod/onny/index.php Starting program: /usr/bin/php /var/www/502.cz/web/nod/onny/index.php [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". [New Thread 0x7fffec495700 (LWP 12351)] [Thread 0x7fffec495700 (LWP 12351) exited] Program received signal SIGSEGV, Segmentation fault. 0x00000000004811ed in ?? () (gdb) bt #0 0x00000000004811ed in ?? () #1 0x0000000000483496 in ?? () #2 0x000000000048f798 in ?? () #3 0x0000000000483496 in ?? () #4 0x000000000048f798 in ?? () #5 0x0000000000483496 in ?? () .... same lines #10900 0x0000000000483496 in ?? () #10901 0x000000000048fa8c in ?? () #10902 0x0000000000492e0c in php_pcre_exec () #10903 0x0000000000497ba8 in php_pcre_match_impl () #10904 0x0000000000498538 in ?? () #10905 0x000000000076a0f1 in ?? () #10906 0x0000000000723f87 in execute () #10907 0x00000000006c44dc in zend_execute_scripts () #10908 0x0000000000664523 in php_execute_script () #10909 0x000000000076ca83 in ?? () #10910 0x000000000043181a in ?? () #10911 0x00007ffff53b4ead in __libc_start_main () from /lib/x86_64-linux-gnu/libc.so.6 #10912 0x00000000004318ad in _start () ------------------------------------------------------------------------ -- Edit this bug report at https://bugs.php.net/bug.php?id=65393&edit=1