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Bug #71218 imagecropauto introduces black line
Submitted: 2015-12-25 17:19 UTC Modified: 2016-07-23 17:58 UTC
Avg. Score:5.0 ± 0.0
Reproduced:1 of 1 (100.0%)
Same Version:0 (0.0%)
Same OS:1 (100.0%)
From: flip101 at gmail dot com Assigned: cmb (profile)
Status: Duplicate Package: GD related
PHP Version: 5.6.16 OS: Windows 7 64bits
Private report: No CVE-ID: None
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 [2015-12-25 17:19 UTC] flip101 at gmail dot com
When cropping an image suddenly a black line appears at the bottom of the image. To demonstrate this you can have a look at where i combined the cropped and non-cropped in the same image. Of course you can not see the original image borders in this representation. So if it's not clear to you, just run the test script, twice maybe with $img = imagecropauto($img); commented out a second time. I tried viewing with IrfanView 4.37 and Paint.NET 4.0.6

Test script:
$img = imagecreatetruecolor(400, 400);
imagefill($img, 0, 0, imagecolorallocate($img, 255, 255, 255)); // white background
$blue = imagecolorallocate($img, 0, 0, 255);
foreach (range(1, 5) as $font) {
  imagestring($img, $font, 10, $font * 15, 'test', $blue);
$img = imagecropauto($img);
imagepng($img, 'test.png');


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 [2015-12-25 17:42 UTC] flip101 at gmail dot com
Seems to be duplicate of
 [2016-07-23 17:58 UTC]
-Status: Open +Status: Duplicate -Assigned To: +Assigned To: cmb
 [2016-07-23 17:58 UTC]
Indeed a duplicate of bug #67447.
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