Bug #68736 [NEW]: A long string in a special regex causes segmentation fault in PHP

From: kstirn at gmail dot com Operating system: Irrelevant PHP version: Irrelevant Package: *Regular Expressions Bug Type: Bug Bug description:A long string in a special regex causes segmentation fault in PHP Description: ------------ If a very long string with no spaces or newlines is passed to a special regex code, PHP crashes with a segmentation fault. This regex code is for example used by phpBB.com to detect email addresses within text. The exact same code works fine on shorter strings. Test script: --------------- Script that causes segmentation fault: https://gist.github.com/kstirn/6ed881e8c090cc701d8a Same code, but with a short string works fine: https://gist.github.com/kstirn/e0564f92e39034cd0529 -- Edit bug report at https://bugs.php.net/bug.php?id=68736&edit=1 -- Try a snapshot (PHP 5.4): https://bugs.php.net/fix.php?id=68736&r=trysnapshot54 Try a snapshot (PHP 5.5): https://bugs.php.net/fix.php?id=68736&r=trysnapshot55 Try a snapshot (trunk): https://bugs.php.net/fix.php?id=68736&r=trysnapshottrunk Fixed in SVN: https://bugs.php.net/fix.php?id=68736&r=fixed Fixed in release: https://bugs.php.net/fix.php?id=68736&r=alreadyfixed Need backtrace: https://bugs.php.net/fix.php?id=68736&r=needtrace Need Reproduce Script: https://bugs.php.net/fix.php?id=68736&r=needscript Try newer version: https://bugs.php.net/fix.php?id=68736&r=oldversion Not developer issue: https://bugs.php.net/fix.php?id=68736&r=support Expected behavior: https://bugs.php.net/fix.php?id=68736&r=notwrong Not enough info: https://bugs.php.net/fix.php?id=68736&r=notenoughinfo Submitted twice: https://bugs.php.net/fix.php?id=68736&r=submittedtwice register_globals: https://bugs.php.net/fix.php?id=68736&r=globals PHP 4 support discontinued: https://bugs.php.net/fix.php?id=68736&r=php4 Daylight Savings: https://bugs.php.net/fix.php?id=68736&r=dst IIS Stability: https://bugs.php.net/fix.php?id=68736&r=isapi Install GNU Sed: https://bugs.php.net/fix.php?id=68736&r=gnused Floating point limitations: https://bugs.php.net/fix.php?id=68736&r=float No Zend Extensions: https://bugs.php.net/fix.php?id=68736&r=nozend MySQL Configuration Error: https://bugs.php.net/fix.php?id=68736&r=mysqlcfg