[PHP-DEV] Bug #12894 Updated: GD crashes PHP by using GD Format From: alberty <email protected>
Date: 08/27/01

ID: 12894
User updated by: alberty <email protected>
Reported By: alberty <email protected>
Old Status: Feedback
Status: Open
Bug Type: GD related
Operating System: i686-pc-linux-gnu
PHP Version: 4.0.7-dev (latest CVS)
New Comment:

Hi Jani,

here is the backtrace of the second script:

Program received signal SIGSEGV, Segmentation fault.
0x40411786 in gd_module_entry () from /usr/local/apache/current/libexec/libphp4.so
(gdb) bt
#0 0x40411786 in gd_module_entry () from /usr/local/apache/current/libexec/libphp4.so
(gdb)

the script fails only if you call ImagePNG after the ImageCreateFromGD.

Also ImageGD2 creates corrupted files, but this is another bug ...

Regards, 

-- 
Steve

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

[2001-08-22 13:04:34] sniper <email protected>

I can't get your scripts to crash.
Could you please generate a GDB backtrace of the crash?

--Jani

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

[2001-08-22 12:13:54] alberty <email protected>

Sorry, my submitted PHP Version was wrong. I mean 4.0.7-dev from the latest CVS.

The script crash under cvs version.

Regards,

Steve

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

[2001-08-22 10:57:00] sniper <email protected>

I doubt that you could crash PHP by using functions
that don't exist..

Both imageGD2 and ImageCreateFromGD where added
AFTER PHP 4.0.6 was released. So they are only
available in the CVS.

And with the latest CVS version, both of your
scripts work just fine.

--Jani

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

[2001-08-22 09:20:30] alberty <email protected>

Hi,

the follow 2 different scripts using ImageCreateFromGD & ImageGD2
and crashes PHP.

(using gd2.0.1 and 4.0.6)

<?php
$im_main=ImageCreateFromPNG("./images/some_picture.png");

ImageGD2($im_main,"./images/some_picture.gd2");

ImageDestroy($im_main);
?>

// the gd image is created with pngtogd from the gd lib package.

<?php
	$im_main=ImageCreateFromGD("./images/some_picture.gd");
	ImagePNG($im_main,"./images/some_picture.png");
	ImageDestroy($im_main);
?>

Regards,

-- 
Steve

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

Edit this bug report at http://bugs.php.net/?id=12894&edit=1

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