I can still reproduce this on 16.10 fully updated with libc6:amd64 2.24-3ubuntu1, so the Ubuntu task should probably be reopened.
$ LANG=de_DE mkinitramfs --help Segmentation fault (core dumped) W: non-GNU getopt $ LANG=de_DE getopt -o c -- --help Segmentation fault (core dumped)
I can still reproduce this on 16.10 fully updated with libc6:amd64 2.24-3ubuntu1, so the Ubuntu task should probably be reopened.
$ LANG=de_DE mkinitramfs --help
Segmentation fault (core dumped)
W: non-GNU getopt
$ LANG=de_DE getopt -o c -- --help
Segmentation fault (core dumped)