#50111 [NEW]: memory leak when stream_context_create is used

From: Date: Sat, 07 Nov 2009 09:26:06 +0000
Subject: #50111 [NEW]: memory leak when stream_context_create is used
Groups: php.bugs 
Request: Send a blank email to php-bugs+get-144328@lists.php.net to get a copy of this message 
From:             datibbaw@php.net
Operating system: Linux
PHP version:      5.2.11
PHP Bug Type:     Streams related
Bug description:  memory leak when stream_context_create is used

Description:
------------
When stream_context_create() is used in conjunction with
file_get_contents() or other stream related functions that accept a context
parameter, memory is being leaked.

Reproduce code:
---------------
for ($i=0;$i<5;++$i){
  $m0 = memory_get_usage();
  file_get_contents('http://www.google.com',
false,
stream_context_create(array()));
  $m1 = memory_get_usage();
  echo $m1-$m0,PHP_EOL;
}

Expected result:
----------------
X (where X is the memory increase for the first iterator)
0
0
0
0


Actual result:
--------------
X (where X is the memory increase for the first iterator)
384 (or something similar)
420
420
480

-- 
Edit bug report at http://bugs.php.net/?id=50111&edit=1
-- 
Try a snapshot (PHP 5.2):            http://bugs.php.net/fix.php?id=50111&r=trysnapshot52
Try a snapshot (PHP 5.3):            http://bugs.php.net/fix.php?id=50111&r=trysnapshot53
Try a snapshot (PHP 6.0):            http://bugs.php.net/fix.php?id=50111&r=trysnapshot60
Fixed in SVN:                        http://bugs.php.net/fix.php?id=50111&r=fixed
Fixed in SVN and need be documented: http://bugs.php.net/fix.php?id=50111&r=needdocs
Fixed in release:                    http://bugs.php.net/fix.php?id=50111&r=alreadyfixed
Need backtrace:                      http://bugs.php.net/fix.php?id=50111&r=needtrace
Need Reproduce Script:               http://bugs.php.net/fix.php?id=50111&r=needscript
Try newer version:                   http://bugs.php.net/fix.php?id=50111&r=oldversion
Not developer issue:                 http://bugs.php.net/fix.php?id=50111&r=support
Expected behavior:                   http://bugs.php.net/fix.php?id=50111&r=notwrong
Not enough info:                     http://bugs.php.net/fix.php?id=50111&r=notenoughinfo
Submitted twice:                     http://bugs.php.net/fix.php?id=50111&r=submittedtwice
register_globals:                    http://bugs.php.net/fix.php?id=50111&r=globals
PHP 4 support discontinued:          http://bugs.php.net/fix.php?id=50111&r=php4
Daylight Savings:                    http://bugs.php.net/fix.php?id=50111&r=dst
IIS Stability:                       http://bugs.php.net/fix.php?id=50111&r=isapi
Install GNU Sed:                     http://bugs.php.net/fix.php?id=50111&r=gnused
Floating point limitations:          http://bugs.php.net/fix.php?id=50111&r=float
No Zend Extensions:                  http://bugs.php.net/fix.php?id=50111&r=nozend
MySQL Configuration Error:           http://bugs.php.net/fix.php?id=50111&r=mysqlcfg

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