#38050 [NEW]: preg_match_all segfault

From: taak@php.net Operating system: debian linux PHP version: 5.1.4 PHP Bug Type: Reproducible crash Bug description: preg_match_all segfault Description: ------------ preg_match_all segfaults on some text samples with the following pattern: #<a(?=[\s/>]+)(?:"[^"]*"|'[^']*'|[^'">])*?\bhref\s?=\s?"([^"]+)"(?:"[^"]*"|'[^']*\'|[^'">])*?>((?:.(?!</a>))*.?)</a>#ism Pastebin code includes an example text sample. Reproduced on i386 linux 5.1.4 built from source but NOT a mac ppc build with the same compile flags, or on 4.3.10. Reproduce code: --------------- http://pastebin.com/743927 -- Edit bug report at http://bugs.php.net/?id=38050&edit=1 -- Try a CVS snapshot (PHP 4.4): http://bugs.php.net/fix.php?id=38050&r=trysnapshot44 Try a CVS snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=38050&r=trysnapshot52 Try a CVS snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=38050&r=trysnapshot60 Fixed in CVS: http://bugs.php.net/fix.php?id=38050&r=fixedcvs Fixed in release: http://bugs.php.net/fix.php?id=38050&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=38050&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=38050&r=needscript Try newer version: http://bugs.php.net/fix.php?id=38050&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=38050&r=support Expected behavior: http://bugs.php.net/fix.php?id=38050&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=38050&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=38050&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=38050&r=globals PHP 3 support discontinued: http://bugs.php.net/fix.php?id=38050&r=php3 Daylight Savings: http://bugs.php.net/fix.php?id=38050&r=dst IIS Stability: http://bugs.php.net/fix.php?id=38050&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=38050&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=38050&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=38050&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=38050&r=mysqlcfg