If I understand correctly this report, it boils down to this command: echo AAAAAAAAAAAAAAAAAAAAAAAA | gifbg -hAAAAAAAA -s
segfaulting. Yes, this is reproducible on jessie. No, this is not reproducible on stretch or sid, because no gifbg executable is in either: https://packages.debian.org/sid/amd64/giflib-tools/filelist https://packages.debian.org/stretch/amd64/giflib-tools/filelist It looks like there is a gifbg.c source file: https://sources.debian.net/src/giflib/5.1.4-0.3/util/ but the makefile skips it (it's in the noinst_PROGRAMS target).
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