graphics/giflib: Update to 5.1.2_1 breaks GIF rendering in Konqueror

[Stefan Ehmann]

On 06.03.2016 19:13, Mark Felder wrote:
>
>
> On Sun, Mar 6, 2016, at 04:15, Stefan Ehmann wrote:
>> On 29.02.2016 18:25, Patrick Hess wrote:
>>> Hi,
>>>
>>> After upgrading graphics/giflib from 5.1.1 to 5.1.2_1, Konqueror won't
>>> display GIF images in web pages:
>>>
>>>       http://www.phess.net/images/giflib-bug.png
>>>
>>> On the left hand side, with giflib 5.1.1, everything looks as expected.
>>> On the right hand side, after upgrading giflib to 5.1.2_1, none of the
>>> GIF icons are rendered correctly. Only the Fresh Ports logo and the two
>>> magnifying glass icons are still there (as they're JPEGs, not GIFs).
>>
>> I located the problem. konqueror isn't the only program affected.
>>
>> See https://sourceforge.net/p/giflib/bugs/84/
>>
>> You can put my patch in the SF ticket in
>> /usr/ports/graphics/giflib/files/ to test it.
>>
>> I'll wait some days to see if there's an upstream fix before submitting
>> a FreeBSD bugzilla ticket.
>>
>> The gvpart workaround I mentioned previously doesn't really work BTW.
>> Some GIFs just worked by chance after konqueror restart.
>>
>
> Hi,
>
> The giflib update was security related so this is a regression due to
> the update I pushed. I am very pleased you were able to identify the
> issue at hand.
>
> Please keep me / ports-secteam in the loop.

giflib-5.1.3 has been released. It contains our fix (plus a small number 
of other fixes).