From: valyala at tut dot by
Operating system: any
PHP version: Irrelevant
PHP Bug Type: Zend Engine 2 problem
Bug description: PHP does not free memory, occupied by cross-referencing
objects
Description:
------------
See reproducible code below
Reproduce code:
---------------
<?
/**
cross-referencing memory leak.
PHP garbage collector doesn't free memory for
cross-referencing objects. It could be great
problem for daemons or services, written on PHP
*/
function memleak($size)
{
$a = str_repeat('a', $size);
// construct child
$child = array(
'data' => $a,
);
// construct parent
$parent = array(
'data' => $a,
'child' => &$child,
);
// comment following line to prevent memleak
$child['parent'] = &$parent;
}
// try to leak of 1GB memory
for ($i = 0; $i < 1000; $i++) memleak(1000000);
sleep(10);
?>
Expected result:
----------------
normal execution of script
Actual result:
--------------
PHP occupies all available memory.
--
Edit bug report at http://bugs.php.net/?id=32403&edit=1
--
Try a CVS snapshot (php4): http://bugs.php.net/fix.php?id=32403&r=trysnapshot4
Try a CVS snapshot (php5.0):
http://bugs.php.net/fix.php?id=32403&r=trysnapshot50
Try a CVS snapshot (php5.1):
http://bugs.php.net/fix.php?id=32403&r=trysnapshot51
Fixed in CVS: http://bugs.php.net/fix.php?id=32403&r=fixedcvs
Fixed in release: http://bugs.php.net/fix.php?id=32403&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=32403&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=32403&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=32403&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=32403&r=support
Expected behavior: http://bugs.php.net/fix.php?id=32403&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=32403&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=32403&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=32403&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=32403&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=32403&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=32403&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=32403&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=32403&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=32403&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=32403&r=mysqlcfg
