#48141 [Asn]: memory leak in zend_execute.c and zend_operators.c

From: Date: Mon, 04 May 2009 17:22:07 +0000
Subject: #48141 [Asn]: memory leak in zend_execute.c and zend_operators.c
References: 1  Groups: php.bugs 
Request: Send a blank email to php-bugs+get-136760@lists.php.net to get a copy of this message 
 ID:               48141
 Updated by:       cellog@php.net
 Reported By:      greg at chiaraquartet dot net
 Status:           Assigned
 Bug Type:         Scripting Engine problem
 Operating System: ubuntu linux
 PHP Version:      5.3CVS-2009-05-04 (CVS)
 Assigned To:      dmitry
 New Comment:

I'm using Ubuntu in a VMWare Fusion image in a MacBook Pro, in case
that is helpful


Previous Comments:
------------------------------------------------------------------------

[2009-05-04 17:21:17] cellog@php.net

user@ubuntu8041:~/workspace/php5$ cat config.nice
#! /bin/sh
#
# Created by configure

'./configure' \
'--enable-debug' \
'--with-zlib' \
'--with-bz2=shared' \
'--enable-cgi' \
"$@"
user@ubuntu8041:~/workspace/php5$ uname -a
Linux ubuntu8041 2.6.24-23-generic #1 SMP Wed Apr 1 21:47:28 UTC 2009
i686 GNU/Linux
user@ubuntu8041:~/workspace/php5$ cat CVS/Tag
TPHP_5_3
user@ubuntu8041:~/workspace/php5$ 




------------------------------------------------------------------------

[2009-05-04 10:16:39] dmitry@php.net

I'm not able to reproduce it with CVS PHP_5_3.

------------------------------------------------------------------------

[2009-05-04 08:03:17] tony2001@php.net

Dmitry, could you look into it?

------------------------------------------------------------------------

[2009-05-04 04:24:12] greg at chiaraquartet dot net

Description:
------------
When running a simple file that only instantiates objects using
autoload, there is a memory leak.

The leak appears to be caused by some combination of string
concatenation and exception throwing.  The line that causes the leak is
in Pyrus/src/Pyrus/Registry/Sqlite3.php in the constructor:

        if ($path && $path != ':memory:') {
            if (dirname($path) . DIRECTORY_SEPARATOR . '.pear2registry'
!= $path) {
                $path = $path . DIRECTORY_SEPARATOR .
'.pear2registry';
            }
        }

The line "$path = $path . DIRECTORY_SEPARATOR . '.pear2registry';"

leaks the value "/usr/local/lib/php/.pear2registry" on my machine, and
the zval allocated for $path.

Reproduce code:
---------------
<?php
// run from checkout of http://svn.pear.php.net/PEAR2/all
function __autoload($class)
{
    if ($class == 'PEAR2_Exception') {
        include __DIR__ . '/Exception/src/Exception.php';
        return;
    }
    $class = str_replace('PEAR2_', '', $class);
    $class = str_replace('_', '/', $class);
    include __DIR__ . '/Pyrus/src/' . $class . '.php';
}
$a = PEAR2_Pyrus_Config::current();


Expected result:
----------------
no output

Actual result:
--------------
user@ubuntu8041:~/workspace/all/Pyrus/tests/AtomicFileTransaction/rmrf$
php -n test.phpt
[Sun May  3 22:58:31 2009]  Script:  'test.phpt'
/home/user/workspace/php5/Zend/zend_execute.c(723) :  Freeing
0xB7B52AE4 (20 bytes), script=test.phpt
[Sun May  3 22:58:31 2009]  Script:  'test.phpt'
/home/user/workspace/php5/Zend/zend_operators.c(1231) :  Freeing
0x088CE1EC (34 bytes), script=test.phpt
=== Total 2 memory leaks detected ===



------------------------------------------------------------------------


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