Bug 149610 - Valid GIF image appears broken
Summary: Valid GIF image appears broken
Status: RESOLVED INVALID
Alias: None
Product: WebKit
Classification: Unclassified
Component: New Bugs (show other bugs)
Version: WebKit Nightly Build
Hardware: Mac OS X 10.10
: P2 Normal
Assignee: Nobody
URL:
Keywords: InRadar
Depends on:
Blocks:
 
Reported: 2015-09-28 17:05 PDT by Eddie Kohler
Modified: 2015-10-27 09:06 PDT (History)
1 user (show)

See Also:

Attachments
Working image. (9.10 KB, image/gif)
2015-09-28 17:05 PDT, Eddie Kohler 		no flags Details
Non-working image. (4.84 KB, image/gif)
2015-09-28 17:06 PDT, Eddie Kohler 		no flags Details
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Description Eddie Kohler 2015-09-28 17:05:52 PDT 
Created attachment 262029 [details]
Working image.

This comment:

https://github.com/kohler/gifsicle/issues/50#issuecomment-143871959

shows two 3-color, single-frame GIF images, 3840x1100 in size.

The two images contain the same image data, encoded slightly differently. Both
images are as far as I can tell valid GIFs, and they are both displayed
correctly by Chrome and Firefox. But Safari and Webkit nightly (r190281) treat the
first image as broken.

I'm attaching the images too.
Comment 1 Eddie Kohler 2015-09-28 17:06:29 PDT 
Created attachment 262030 [details]
Non-working image.
Comment 2 Alexey Proskuryakov 2015-09-28 23:12:59 PDT 
<rdar://problem/22892589>
Comment 3 Alexey Proskuryakov 2015-09-28 23:15:38 PDT 
Thank you for the report!

This image fails to open not just in Safari, but also in Preview.app. As such, this is an issue in lower level system framework, not in WebKit. I have moved it to Apple internal bug tracker for investigation. Closing as INVALID as a non-WebKit bug.
Comment 4 Alexey Proskuryakov 2015-10-27 09:06:39 PDT 
This should work properly in OS X 10.11 El Capitan. Thank you again for the report!