From: php at kaiundina dot de
Operating system: different
PHP version: 5.1.2
PHP Bug Type: PCRE related
Bug description: Apache crashes when using unicode matches for whitespace and
control characters
Description:
------------
The statement in the reproduce code simply crashes my server (Win XP Pro,
Apache 2, PHP 5.1.0, default-charset UTF 8) and that of my webhoster
(Linux, Apache 2, PHP 5.1.2, default-charset Latin1) - time_limit, which
is set to 30 s seems not to work.
Executing the script via CLI produces the same result (but can be
cancelled by Ctrl-C)
The snipped shall look for adjacent blocks, each persisting of a
separator character followed by one or more characters that aren't
control- or separator-characters.
Crashing is independent of the $aName-value and the result, the match
would produce.
The example is stripped down from a bigger pattern - always having to kill
the webserver after each test is quite annoying :(
Reproduce code:
---------------
<?php
$aName = 'My Name';
preg_match('/^(\\p{Z}[^\\p{C}\\p{Z}]+)*$/', $aName);
?>
Expected result:
----------------
just nothing happens - the function returns and drops its result (false in
this case, but doesn't matter)
Actual result:
--------------
Server "crashes": CPU usage is at 100% and Apache doesn't respond to a
restart (php compiled as module).
--
Edit bug report at http://bugs.php.net/?id=36553&edit=1
--
Try a CVS snapshot (PHP 4.4):
http://bugs.php.net/fix.php?id=36553&r=trysnapshot44
Try a CVS snapshot (PHP 5.1):
http://bugs.php.net/fix.php?id=36553&r=trysnapshot51
Try a CVS snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=36553&r=trysnapshot60
Fixed in CVS: http://bugs.php.net/fix.php?id=36553&r=fixedcvs
Fixed in release:
http://bugs.php.net/fix.php?id=36553&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=36553&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=36553&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=36553&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=36553&r=support
Expected behavior: http://bugs.php.net/fix.php?id=36553&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=36553&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=36553&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=36553&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=36553&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=36553&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=36553&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=36553&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=36553&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=36553&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=36553&r=mysqlcfg
