ID:               28639
 Updated by:       [EMAIL PROTECTED]
 Reported By:      jim at bluedojo dot com
-Status:           Verified
+Status:           Feedback
 Bug Type:         GD related
 Operating System: Windows XP
 PHP Version:      4.3.7
 New Comment:

Please try using this CVS snapshot:

  http://snaps.php.net/php4-STABLE-latest.tar.gz
 
For Windows:
 
  http://snaps.php.net/win32/php4-win32-STABLE-latest.zip

Can not reproduce.



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

[2004-06-18 17:15:21] scottmacvicar at ntlworld dot com

Problem is in GetDataBlock_ it doesn't even return -1 so constantly
loops within the end code handling part of LWZReadByte_

while ((count = GetDataBlock(fd, buf)) > 0)
is the loop in question in libgd/gd_gif_in.c

I dont have enough time to see whats wrong with that function but its
there its looping.

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

[2004-06-15 12:45:03] iridium at beyondunreal dot com

I have reproduced this bug using

php -r
"imagecreatefromgif('http://members.tripod.com/~TyroneZero/drstrangelove.gif');"

on both windows xp in PHP 5.0.0rc2
and linux with 4.3.6
(both command line).

The above command causes it to hang. Tracing through the code using a
debugger it does look a lot like an infinate loop, though it could just
be a really long one.

I believe the infinate loop starts at line 155 in gd_gif_in.c at 

for (;;) {

- I think it may just not be reaching an exit condition.

I may investigate more later.

Very strangely, if I download the gif and run the same command without
going to the site at runtime, there is no such problem.

Irid.

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

[2004-06-14 14:02:11] [EMAIL PROTECTED]

It seems this is Windows specific issue caused most probably by
php_gd2.dll.

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

[2004-06-06 20:04:26] jim at bluedojo dot com

Yes, the images are corrupt.  I believe that is why the function
imageCreateFromGif() is going into an infinite loop.  I need to have
the function just exit and not loop infinitely.

When I run the php page from the command line it goes into an infinite
loop.  When I load the php page from an Apache web server, it causes
Apache to stall infinitely.  My processor maxes out and I have to go to
the Windows Task Menu to cancel the process.

I am running the following:

Windows XP
Apache/1.3.28
PHP/4.3.7 
GD library is turned on in php.ini

Any help would be greatful.  Thanks.

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

[2004-06-06 18:32:07] [EMAIL PROTECTED]

The 2 gif images you've offered are corrupt, and I cannot 
replicate the cpu usage you are reporting.  

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

The remainder of the comments for this report are too long. To view
the rest of the comments, please view the bug report online at
    http://bugs.php.net/28639

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Edit this bug report at http://bugs.php.net/?id=28639&edit=1

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