I did a make build on the Dec 28 tree, noticed the unistd.h vs. mail/extern.h
problem and then, by accident, stumbled on the following:

Script started on Thu Dec 29 19:52:01 1994
sheep# pwd
/usr/src/usr.bin/vi
sheep# make depend
===> common
rm -f .depend
files=" ";  if [ "$files" != " " ]; then  mkdep -a  -I. -I/usr/src/usr.bin/vi/common   $files;  fi
[Very long files="blah blah" line deleted]
*** Signal 11

Stop.
*** Error code 1

Stop.

Can anyone out there repeat this behaviour ?

Onno van der Linden       c/o      vdlinden@fwi.uva.nl (Frank van der Linden)