Sorry for my bad english.
To whom it may concern:
I bought a Pentax K-70 DSLR and took some pictures. I wanted to view it with gwenview, but it segfaulted. Only with pictures made by Pentax.
I use Slackware Current with gwenview-4.14.3-x86_64-4.txz and exiv2-0.26-x86_64-3.txz.
It seems that I was concerned by this error:
https://www.pentaxforums.com/forums/...table-too.html
After applying the patch to exiv2 source, building it and copying libexiv2.so.26.0.0 to /usr/lib64/, now I can see the pictures with gwenview.