zfs diff without allow as user gets coredump?

[Larry Rosenman]

Should we get a better message if you try to do a zfs diff as a normal
user, and diff hasn't been allowed?

You currently get:
borg.lerctr.org /home/ler $ zfs diff zroot/home/ler at zfs-auto-snap_hourly-2014-12-15-12h00
internal error: Invalid argument
Abort trap (core dumped)
borg.lerctr.org /home/ler $

Just curious.
-- 
Larry Rosenman                     http://www.lerctr.org/~ler
Phone: +1 214-642-9640                 E-Mail: ler at lerctr.org
US Mail: 108 Turvey Cove, Hutto, TX 78634-5688