#40479 [Com]: zend_mm_heap corrupted

From: Date: Thu, 17 Jul 2008 08:28:13 +0000
Subject: #40479 [Com]: zend_mm_heap corrupted
References: 1  Groups: php.bugs 
Request: Send a blank email to php-bugs+get-126873@lists.php.net to get a copy of this message 
 ID:               40479
 Comment by:       john dot glazebrook at guava dot com
 Reported By:      rrossi at maggioli dot it
 Status:           No Feedback
 Bug Type:         Reproducible crash
 Operating System: Suse Linux 9.0
 PHP Version:      5.2.1
 New Comment:

OK, I don't know if this is useful but I'll keep posting stuff as I
find it here :-)

PHP 5.2.5 MysqlI 5.0.45

If I alter the database the seg fault goes away and I get normal
exceptions or errors or data results (depending if the SQL is working)
then if I change the DB back to what I need seg faults occur again. So I
think it must be an error in MysqlI or MySQL... ?

John


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

[2008-07-16 16:38:39] john dot glazebrook at guava dot com

Sorry, I forgot to say my server runs Red Hat Linux.

Um, I'm not sure if this is helpful, but I found the error when moving
from PEAR:DB over to ZF DB objects. So I only changed DB code. OK, some
psedudoish code:

class x {
  function db() {
    $rpt = new Report();
    $row = $rpt->createRow();
    $row->text = 'xyz';
    $row->save();
    echo 'OK 2';
  }
}

$x = new x();
echo 'OK';
$x->db();
echo 'OK 3';

And I see:
 OK
 OK 2
 seg fault

Also changing the function to:

class x {
  function db() {
    $rpt = new Report();
    $row = $rpt->createRow();
    $row->text = 'xyz';
    $row->save();
    echo 'OK 2';
    $row = null;
    echo 'Moooo';
  }
}

this time it seg faults at $row = null;

Hope this is of some help. It really sucks :-(

John

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

[2008-07-16 16:31:08] john dot glazebrook at guava dot com

I found this 'zend_mm_heap corrupted' in my apache log files.

I am using 5.2.5 with almost everything enabled. Mysqli and I am using
Zend Frame work.

As far as I can tell my scripts case this (and a seg fault) when they
are looping through a Zend_DB_Table_Rowset object adding rows to a
table.

When the $row **goes out of scope** the script seg faults. So I get
this error when the function (well method) returns a value. I stripped
all code from the function apart from echos and the $row->save() and the
seg faults still happen.

Ho hum...

john

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

[2008-06-23 01:00:00] 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".

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

[2008-06-15 11:29:29] felipe@php.net

Please try using this CVS snapshot:

  http://snaps.php.net/php5.2-latest.tar.gz
 
For Windows (zip):
 
  http://snaps.php.net/win32/php5.2-win32-latest.zip

For Windows (installer):

  http://snaps.php.net/win32/php5.2-win32-installer-latest.msi



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

[2008-06-15 09:43:22] akdeiva at qxsystems dot com

Hi,

i too got the same issue and this is how the code works,

I am having some scripts to parse the HTML data and wherein i am having
part of the code as ,

				$replaced_key = strtolower(str_replace("%", "percent", $key)); 
				$replaced_key = str_replace(".", "", $replaced_key); 
				$key = str_replace(" ", "_", $replaced_key); 


When i have the above code with the same variable name,

				$key = strtolower(str_ireplace("%", "percent", $key)); 
				$key = str_ireplace(".", "", $key); 
				$key = str_ireplace(" ", "_", $key); 

I get the "zend_mm_heap corrupted" error wherein when changed the code
to the above way, it works fine.

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

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    http://bugs.php.net/40479

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