From: bmorel at ssi dot fr
Operating system: CentOS 5.3
PHP version: 5.2.9
PHP Bug Type: Regexps related
Bug description: Memleak in ereg() and eregi() functions
Description:
------------
When repeating an ereg() or eregi() on different patterns, the memory
usage of httpd (or php if executed from the command-line) gets huge (about
1GB for the example below) for the time the script executes, then the
memory is freed.
During this time, the memory_get_usage() stays normal, and php's memory
limit doesn't trigger.
When repeating the ereg() with the same pattern each time, the memory
usage stays normal; this happens only when repeating with a different
pattern each time.
Verified on CentOS with PHP 5.2.6 & 5.2.9
Verified on Windows XP with PHP 5.2.8
Reproduce code:
---------------
<?php
for ($i=0;$i<1000000;$i++) ereg("$i","test");
?>
Expected result:
----------------
Memory usage staying low.
Actual result:
--------------
Memory usage as shown by "top -d 1" gets huge.
--
Edit bug report at http://bugs.php.net/?id=48416&edit=1
--
Try a CVS snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=48416&r=trysnapshot52
Try a CVS snapshot (PHP 5.3):
http://bugs.php.net/fix.php?id=48416&r=trysnapshot53
Try a CVS snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=48416&r=trysnapshot60
Fixed in CVS:
http://bugs.php.net/fix.php?id=48416&r=fixedcvs
Fixed in CVS and need be documented:
http://bugs.php.net/fix.php?id=48416&r=needdocs
Fixed in release:
http://bugs.php.net/fix.php?id=48416&r=alreadyfixed
Need backtrace:
http://bugs.php.net/fix.php?id=48416&r=needtrace
Need Reproduce Script:
http://bugs.php.net/fix.php?id=48416&r=needscript
Try newer version:
http://bugs.php.net/fix.php?id=48416&r=oldversion
Not developer issue:
http://bugs.php.net/fix.php?id=48416&r=support
Expected behavior:
http://bugs.php.net/fix.php?id=48416&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=48416&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=48416&r=submittedtwice
register_globals:
http://bugs.php.net/fix.php?id=48416&r=globals
PHP 4 support discontinued: http://bugs.php.net/fix.php?id=48416&r=php4
Daylight Savings: http://bugs.php.net/fix.php?id=48416&r=dst
IIS Stability:
http://bugs.php.net/fix.php?id=48416&r=isapi
Install GNU Sed:
http://bugs.php.net/fix.php?id=48416&r=gnused
Floating point limitations:
http://bugs.php.net/fix.php?id=48416&r=float
No Zend Extensions:
http://bugs.php.net/fix.php?id=48416&r=nozend
MySQL Configuration Error:
http://bugs.php.net/fix.php?id=48416&r=mysqlcfg
