From: nuitari at nuitari dot net
Operating system: Linux
PHP version: 5.0.5
PHP Bug Type: PCRE related
Bug description: Problem when a parenthesised sub exp matches >= 4999996 chars
Description:
------------
If a paranthesised sub expression matches more then ~4999996 chars, no
data will be inserted into the &matches array.
Reducing by 1 the number in str_repeat will cause the script to work.
I have tested this with PHP 4.4.0-gentoo-amd64, 5.0.4-FC4, and
5.0.5-gentoo and all exhebit the same problems.
The configure line is different on all platforms. php.ini is the default.
On the FC4 test there is a 512Mb memory limit.
Reproduce code:
---------------
<?php
$xml_clean = '<data>';
$xml_clean .= str_repeat('a',4999996);
$xml_clean .= '</data>';
$ret = preg_match("/(<([\w]+)[^>]*>)(.*?)(<\/\\2>)/s", $xml_clean,
$match);
print_r($match);
?>
Expected result:
----------------
Array
(
[0] => <data>aaa(...)aaa</data>
[1] => <data>
[2] => data
[3] => aaa(...)aaa
[4] => </data>
)
Actual result:
--------------
Array
(
)
--
Edit bug report at http://bugs.php.net/?id=34720&edit=1
--
Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=34720&r=trysnapshot4
Try a CVS snapshot (php5.0):
http://bugs.php.net/fix.php?id=34720&r=trysnapshot50
Try a CVS snapshot (php5.1):
http://bugs.php.net/fix.php?id=34720&r=trysnapshot51
Fixed in CVS: http://bugs.php.net/fix.php?id=34720&r=fixedcvs
Fixed in release: http://bugs.php.net/fix.php?id=34720&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=34720&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=34720&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=34720&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=34720&r=support
Expected behavior: http://bugs.php.net/fix.php?id=34720&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=34720&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=34720&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=34720&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=34720&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=34720&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=34720&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=34720&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=34720&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=34720&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=34720&r=mysqlcfg
