Description:
------------
report by cjones

if built-in server start with a router:
<?php
if (preg_match('/\.(?:png|jpg|jpeg|gif)$/', $_SERVER["REQUEST_URI"]))
    return false; // serve the requested resource as-is.
else { 
    echo "here";
}
?>

then accesss a non-exists file like(a.jpe) will result in mem leak.

Test script:
---------------
<?php
if (preg_match('/\.(?:png|jpg|jpeg|gif)$/', $_SERVER["REQUEST_URI"]))
    return false; // serve the requested resource as-is.
else { 
    echo "here";
}
?>

Expected result:
----------------
cjones@mlt:~/w$ php54 -S localhost:8000 routing.php 
PHP 5.4.0RC4-dev Development Server started at Mon Dec 19 18:55:25 2011
Listening on localhost:8000
Document root is /home/cjones/public_html
Press Ctrl-C to quit.
[Mon Dec 19 18:55:30 2011] ::1:48358 [200]: /oraclelogo.jpg
[Mon Dec 19 18:55:30 2011]  Script:  '/home/cjones/public_html/favicon.ico'
/home/cjones/phpsrc/php/php-src/branches/PHP_5_4/ext/filter/filter.c(451) :  
Freeing 0xB493F0E4 (16 bytes), script=/home/cjones/public_html/favicon.ico
Last leak repeated 19 times
[Mon Dec 19 18:55:30 2011]  Script:  '/home/cjones/public_html/favicon.ico'
/home/cjones/phpsrc/php/php-src/branches/PHP_5_4/Zend/zend_execute.h(184) :  
Freeing 0xB493F19C (65484 bytes), script=/home/cjones/public_html/favicon.ico
[Mon Dec 19 18:55:30 2011]  Script:  '/home/cjones/public_html/favicon.ico'

.....