From: quaker at barbara dot eu dot org
Operating system: Linux 2.6.20, Ubuntu 7.04
PHP version: 5.2.4
PHP Bug Type: DOM XML related
Bug description: DOMXML functions can allocate more memory than memory_limit
allows
Description:
------------
DOMXML functions can allocate more memory than memory_limit allows.
Reproduce code:
---------------
<?php
print "Current memory limit: " . ini_get("memory_limit") . "\n";
$dom = new DOMDocument();
$responseElement = $dom->createElement('response');
$dom->appendChild($responseElement);
/* Infinite loop */
while (1)
{
$dataElement = $dom->createElement('data');
$dataText = $dom->createTextNode('Example data');
$dataElement->appendChild($dataText);
$responseElement->appendChild($dataElement);
}
/* Never executed, just for showing idea */
$xmlString = $dom->saveXML();
echo $xmlString;
?>
Expected result:
----------------
Fatal error: Allowed memory size of 2097152 bytes exhausted (tried to
allocate XXX bytes) in YYY on line ZZZ
Actual result:
--------------
Memory limit is not hit. Script memory usage grows, till out of memory
received from OS.
--
Edit bug report at http://bugs.php.net/?id=42968&edit=1
--
Try a CVS snapshot (PHP 4.4):
http://bugs.php.net/fix.php?id=42968&r=trysnapshot44
Try a CVS snapshot (PHP 5.2):
http://bugs.php.net/fix.php?id=42968&r=trysnapshot52
Try a CVS snapshot (PHP 6.0):
http://bugs.php.net/fix.php?id=42968&r=trysnapshot60
Fixed in CVS: http://bugs.php.net/fix.php?id=42968&r=fixedcvs
Fixed in release:
http://bugs.php.net/fix.php?id=42968&r=alreadyfixed
Need backtrace: http://bugs.php.net/fix.php?id=42968&r=needtrace
Need Reproduce Script: http://bugs.php.net/fix.php?id=42968&r=needscript
Try newer version: http://bugs.php.net/fix.php?id=42968&r=oldversion
Not developer issue: http://bugs.php.net/fix.php?id=42968&r=support
Expected behavior: http://bugs.php.net/fix.php?id=42968&r=notwrong
Not enough info:
http://bugs.php.net/fix.php?id=42968&r=notenoughinfo
Submitted twice:
http://bugs.php.net/fix.php?id=42968&r=submittedtwice
register_globals: http://bugs.php.net/fix.php?id=42968&r=globals
PHP 3 support discontinued: http://bugs.php.net/fix.php?id=42968&r=php3
Daylight Savings: http://bugs.php.net/fix.php?id=42968&r=dst
IIS Stability: http://bugs.php.net/fix.php?id=42968&r=isapi
Install GNU Sed: http://bugs.php.net/fix.php?id=42968&r=gnused
Floating point limitations: http://bugs.php.net/fix.php?id=42968&r=float
No Zend Extensions: http://bugs.php.net/fix.php?id=42968&r=nozend
MySQL Configuration Error: http://bugs.php.net/fix.php?id=42968&r=mysqlcfg
