From: donquixote dot phplist at googlemail dot com Operating system: Windows XP PHP version: 5.2.11 PHP Bug Type: Reproducible crash Bug description: preg_replace crashes my system.
Description: ------------ I found a regex / text combination that causes my apache to crash / restart with preg_replace. The example is a reduced version of Drupal's CSS compression regex. The regex is not overly complex, and the text is not overly long. Reproducing this depends on system configuration: On my webspace it does not crash. But, on my localhost it always crashes with this regex / text combination. Removing a few letters in the text (no matter which) makes the bug not happen. More info in the linked file. So: It seems that preg_replace is not the most robust piece of code. No matter what you feed it, it should never ever crash! And, btw: I was going to report this as a comment on http://bugs.php.net/bug.php?id=46551, but the comment form results in an error page. ("Authentication failed: Incorrect username Warning: Cannot modify header information - headers already sent by (output started at /home/Web/sites/php-bugs-web/include/auth.inc:30) in /home/Web/sites/php-bugs-web/bug.php on line 232") Reproduce code: --------------- standalone script at http://drupal.org/files/issues/test.php__1.txt posted here http://drupal.org/node/444228#comment-2089300 Expected result: ---------------- preg_replace should do its job (compressing the CSS). Or show a meaningful error message, if there is a valid reason why this is not possible. Actual result: -------------- Apache crash / restart, with no useful error message in error.log, except the usual restart messages. -- Edit bug report at http://bugs.php.net/?id=49697&edit=1 -- Try a snapshot (PHP 5.2): http://bugs.php.net/fix.php?id=49697&r=trysnapshot52 Try a snapshot (PHP 5.3): http://bugs.php.net/fix.php?id=49697&r=trysnapshot53 Try a snapshot (PHP 6.0): http://bugs.php.net/fix.php?id=49697&r=trysnapshot60 Fixed in SVN: http://bugs.php.net/fix.php?id=49697&r=fixed Fixed in SVN and need be documented: http://bugs.php.net/fix.php?id=49697&r=needdocs Fixed in release: http://bugs.php.net/fix.php?id=49697&r=alreadyfixed Need backtrace: http://bugs.php.net/fix.php?id=49697&r=needtrace Need Reproduce Script: http://bugs.php.net/fix.php?id=49697&r=needscript Try newer version: http://bugs.php.net/fix.php?id=49697&r=oldversion Not developer issue: http://bugs.php.net/fix.php?id=49697&r=support Expected behavior: http://bugs.php.net/fix.php?id=49697&r=notwrong Not enough info: http://bugs.php.net/fix.php?id=49697&r=notenoughinfo Submitted twice: http://bugs.php.net/fix.php?id=49697&r=submittedtwice register_globals: http://bugs.php.net/fix.php?id=49697&r=globals PHP 4 support discontinued: http://bugs.php.net/fix.php?id=49697&r=php4 Daylight Savings: http://bugs.php.net/fix.php?id=49697&r=dst IIS Stability: http://bugs.php.net/fix.php?id=49697&r=isapi Install GNU Sed: http://bugs.php.net/fix.php?id=49697&r=gnused Floating point limitations: http://bugs.php.net/fix.php?id=49697&r=float No Zend Extensions: http://bugs.php.net/fix.php?id=49697&r=nozend MySQL Configuration Error: http://bugs.php.net/fix.php?id=49697&r=mysqlcfg
