Bug #61744 [Com]: preg_match crashes

Edit report at https://bugs.php.net/bug.php?id=61744&edit=1 ID: 61744 Comment by: bugzilla33 at gmail dot com Reported by: bugzilla33 at gmail dot com Summary: preg_match crashes Status: Open Type: Bug Package: *Regular Expressions Operating System: Win 7 64-bit PHP Version: 5.4.1RC2 Block user comment: N Private report: N New Comment: When use #^(A{1}B)+$# instead of #^(A{1,2}B)+$# testcase returns 1 - no crash Previous Comments: ------------------------------------------------------------------------ [2012-04-16 16:34:13] bugzilla33 at gmail dot com ...and I tested Windows 7 only (32-bit and 64-bit) ------------------------------------------------------------------------ [2012-04-16 16:31:13] bugzilla33 at gmail dot com ...but using apache module phpinfo also says: pcre.backtrack_limit 1000000 pcre.recursion_limit 100000 ------------------------------------------------------------------------ [2012-04-16 16:29:34] bugzilla33 at gmail dot com str_repeat('AB',200) do not crash str_repeat('AB',300) crashes - browser freeze about 4sec and info - browser can not display site ------------------------------------------------------------------------ [2012-04-16 16:18:15] rasmus@php.net Windows-only, I assume? Apache uses PCRE as well, so perhaps Apache on Windows is resetting the PCRE limits? I assume it doesn't crash if you reduce the 300 there to something smaller? ------------------------------------------------------------------------ [2012-04-16 16:13:05] bugzilla33 at gmail dot com I checked recursion-limit: pcre.backtrack_limit 1000000 pcre.recursion_limit 100000 On fastCGI or direct php.exe testcase.php does not crash. When use Apache 2.2.21 with php module with the same php.ini testcase.php crash apache. Now I am at home. The same crash like at work - two other machines. ------------------------------------------------------------------------ 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 https://bugs.php.net/bug.php?id=61744 -- Edit this bug report at https://bugs.php.net/bug.php?id=61744&edit=1