Re: [Gimp-developer] png save broken in gimp edge ppa - There was an invalid UTF-8 string in the exif:ImageDescription

[Thorsten Stettin <thorsten stettin gmail com>]

Am 23.05.2016 um 15:00 schrieb C R:
> Happens every time with this file:
> http://www.whitecatgraphics.com/opendesignstudio/gimp/samples/ac_a4_document_holder_vintage_leather_brown_4.png
>
> steps to reproduce:
> 1.open the downloaded file in gimp
> 2.export as "ac_a4_document_holder_vintage_leather_brown_4a.png"
> 3.these boxes in png export are checked: "save background colour", and 
> all checkboxes after and including Save resolution, compression level 
> 9, and everything under advanced checked.

Hi

At home in Xenial I exported your picture with save comment.
The above error occurred.
Hmm.

I took a look at the comment field exactly the exif:ImageDescription: It 
contains an invalid UTF-8 string.

*identify -verbose ac_a4_document_holder_vintage_leather_brown_4.png | 
grep -i desc **
**    exif:ImageDescription: ..:\w.*


After replacing the picture comment content with Gimp's standard one - 
valid UTF-8, I think - I could export your picture without any problem.

*identify -verbose ac_a4_document_holder_vintage_leather_brown_4a.png | 
grep -i desc
    exif:ImageDescription: Created with GIMP*

I guess it's a bug regarding the comment string and/or character set 
handling. Maybe a wrong character set was using in the 
exif:ImageDescription field, I assume.


Greetings

Thorsten
> On Mon, May 23, 2016 at 11:24 AM, Thorsten Stettin 
> <thorsten stettin gmail com <mailto:thorsten stettin gmail com>> wrote:
>
>     Am 23.05.2016 um 08:44 schrieb C R:
>     > Fails on export with a Plug-in crash:
>     >
>     > "Procedure 'file-png-save-defaults' returned no return values
>     >
>     >
>     > Strangely, if you save as a jpeg first, it exports to png just fine.
>     >
>     > Steps to reproduce:
>     > 1. Open File
>     > 2. Export to png
>     >
>     > Results in the above crash.
>     >
>     > Ver: GIMP 2.9.3
>     > Ubuntu 16.04 with gnome-shell 3.18.4
>     >
>     > -C
>     Under Trusty I can't reproduce that behavior. :-(
>
>     gimp Version 2.9.3.81-0t0~ppa
>     libgegl-0.3-0 1:0.3.6.20-0t0~ppa
>
>     Cheers
>
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