Source: libpng1.6 Followup-For: Bug #834751 Control: severity -1 important Hi,
First thoughts about this: libpng 1.6 is more strict about invalid pngs and the message you're seeing is an indication that the file was corrupt. (reducing severity as this is seems only for broken images; I currently suspect that this is not a bug in libpng, but kind of missing checks for failures. But this needs a little more investigations to be sure, I'll try to squeeze that in on the weekend.) -- tobi -- System Information: Debian Release: stretch/sid APT prefers unstable APT policy: (500, 'unstable'), (500, 'testing') Architecture: amd64 (x86_64) Foreign Architectures: i386 Kernel: Linux 4.6.0-1-amd64 (SMP w/4 CPU cores) Locale: LANG=de_DE.utf8, LC_CTYPE=de_DE.utf8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system)