While checking for another bug, I found the cause of this also, libgd3 on my system was corrupted.After reinstalling it installation of libgvc6 has no problem.
- Bug#843380: libgvc6 fail to install on stretch Samuele Battarra
- Bug#843380: libgvc6 fail to install on stretch GCS
- Bug#843380: libgvc6 fail to install on stretch batta...@libero.it