Comment 24 for bug 128517

Yeah, the backtrace was actually not a good idea, because fatsort did not really
crash but exited cleanly. I located the bug, the CFLAGS get completely
overwritten when they are specified on the make commandline,
"-D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64" need to be set. I will push fixed
packages, soon.

About the "-f", I guess this is needed because you do not have an entry for
/dev/sdb1 in /etc/fstab, there is only one with the label. Therefore fatsort
cannot check, whether or not the filesytem is mounted. If you want it do beheave
differently, you need to talk to upstream.