ID: 40812
Comment by: mick at aplicube dot com
Reported By: chmelar at busche dot sk
Status: No Feedback
Bug Type: Unknown/Other Function
Operating System: Fedora Linux 2.6
PHP Version: 5.2.1
New Comment:
Win2K SVP4
PHP5.2.1
Apache2.2.4
MySQL 5.0.37
CMS joomla1.5 debugged [i.e. removed errors found so far]
Fatal error: Allowed memory size of 8388608 bytes exhausted (tried to
allocate 16 bytes) in C:\7\htdocs\libraries\phputf8\utils\unicode.php on
line 49
line where php is moaning..
$in = ord($str{$i});
Sometimes an empty page will occure but with correct html...head...body
tags etc.
Same phenomen as in the previous message description explained.
Latest php ...the same fatal error will occure [on my system].
php 5.1.x, php5.2.0 won't produce this error.
Previous Comments:
------------------------------------------------------------------------
[2007-03-23 01:00:01] php-bugs at lists dot php dot net
No feedback was provided for this bug for over a week, so it is
being suspended automatically. If you are able to provide the
information that was originally requested, please do so and change
the status of the bug back to "Open".
------------------------------------------------------------------------
[2007-03-15 13:02:00] [EMAIL PROTECTED]
Please try using this CVS snapshot:
http://snaps.php.net/php5.2-latest.tar.gz
For Windows:
http://snaps.php.net/win32/php5.2-win32-latest.zip
------------------------------------------------------------------------
[2007-03-15 08:50:08] chmelar at busche dot sk
Description:
------------
Sometimes when PHP tries to allocate too much memory, it crashes
without an error message and produces a blank screen.
Reproduce code:
---------------
This occurs after running this script (it doesn't crash always, so try
to refresh 5-10 times until it returns nothing (zero sized reply)):
<?php
function myErrorHandler($errno, $errmsg, $filename, $linenum, $vars) {
ini_set('memory_limit', '10M');
echo "Error occured";
die();
};
ini_set('memory_limit', '1M');
error_reporting(E_ALL | E_STRICT);
set_error_handler('myErrorHandler');
$a=array();
$aLen=rand(2048,65535);
echo "trying to initialize an array with ".$aLen." items (randomly
generated)...
\n";
$i=0;
while ($i<$aLen && (rand(1,65534)<65533 || rand(1,65534)>2)) {
$varName='a_'.chr(rand(65,90)).chr(rand(65,90)).chr(rand(65,90)).chr(rand(65,90)).chr(rand(65,90));
$$varName=rand(0,255);
//$a[]=rand(0,255);
$i++;
};
echo "successfuly initialized an array with ".count($a)." items. please
refresh";
?>
Expected result:
----------------
Usually (in normal cases) the error handler should write "Error
occured" to the output and end the script.
Looks like the code allocates small chunks of memory (about 40 bytes),
and when it tries to allocate the next chunk and it doesn't have enough
memory, it tries to trigger an error, BUT there is the problem that by
triggering error 4 or 5 parameters are passed to the error handler -
that means PHP needs to allocate space for them. But the error message
text itself has more than 100 charactes, so it doesn't fit to the free
memory block and PHP just crashes. So it seems to be a PHP bug.
Actual result:
--------------
Zero sized reply (MS IE7) or blank screen (FF 1.5)
------------------------------------------------------------------------
--
Edit this bug report at http://bugs.php.net/?id=40812&edit=1
