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Bug #186 GIF file structure crash if image size more then 16Kb(128x128pix, for exmpl)
Submitted: 1998-03-18 09:57 UTC Modified: 1998-05-22 19:13 UTC
From: skor at portal dot ru Assigned:
Status: Closed Package: Other
PHP Version: 3.0b6 OS: NT 4
Private report: No CVE-ID: None
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From: skor at portal dot ru
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 [1998-03-18 09:57 UTC] skor at portal dot ru
GD Library work unstable when I try to increase picture dimentions. For example 
simple script:

<?php Header("Content-type: image/gif");
$im_width = 128; 
$im_heigth = 32;

$im_gif = imagecreate($im_width, $im_heigth);

$color_white = imagecolorallocate($im_gif, 255, 255, 255);
$color_black = imagecolorallocate($im_gif, 0, 0, 0);

imagefill($im_gif, 0, 0, $color_white);
imagestring($im_gif, 2, 4, 4, "QWERTY", $color_black); 
imagegif($im_gif);
?>

- still work, but if 

$im_width = 256; 
$im_heigth = 256;

- then only half of image displayed, then became noise :)
It's look like wrong memory allocation for array of pixels (or limit in 16Kb -???).

P.S. I, of carse, read in read.me file that GD library is still unstable, but possibly it's my mistakes? 
Or not?
P.P.S. I use PHP3.0beta6 on Windows NT Server with IIS3.
GD Library activated in "ini" file: (extension=gd.dll)

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 [1998-05-22 19:13 UTC] shane
Works fine with current cvs so closing.
 
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