On 2019-11-25 at 21:27:04 +0100, László Böszörményi (GCS) wrote:
> On Mon, Nov 25, 2019 at 9:03 PM Elena ``of Valhalla''
> <valha...@debian.org> wrote:
> > On 2019-11-25 at 17:28:32 +0100, László Böszörményi (GCS) wrote:
> > done the upgrade, the same thing is happening.
>  While I can reproduce the problem, for me the displayed messages are these:

yes, I didn't mention the warnings that were already present in buster,
i.e.:

> TIFFReadDirectory: Warning, Photometric tag is missing, assuming data is 
> YCbCr.
> TIFFReadDirectory: Warning, SamplesPerPixel tag is missing, applying
> correct SamplesPerPixel value of 3.
> OJPEGSubsamplingCorrect: Warning, Subsampling tag is not set, yet
> subsampling inside JPEG data [2,1] does not match default values
> [2,2]; assuming subsampling inside JPEG data is correct.
> OJPEGSetupDecode: Warning, Depreciated and troublesome old-style JPEG
> compression mode, please convert to new-style JPEG compression and
> notify vendor of writing software.

then there is:

> OJPEGWriteHeaderInfo: jpeg_start_decompress() returned image_width =
> 4272 and image_height = 2848, expected 4272 and -1.

which I can confirm is the same message I'm getting since updating
(sorry, when I tested earlier I checked that the image wasn't being
opened, and didn't notice that the message had changed).
 
> > At first I thought it was a regression in libimlib2 (and was going to
> > open a bug on that package), but after reading the manpage of feh I
> > started to think that it was never supposed to work the way it did.
>  For me this seems to be tiff checks that became stricter to prevent
> accidental crashes due to images not conforming the standards.
> As such the warnings show the sign of badly written OJPEG format that
> don't conform the standard.

Indeed, that's why I started to think that maybe it was the files' fault
and not the tool.

-- 
Elena ``of Valhalla''

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