Enable WARNS=4 by default for usr.bin, except for:
awk bdes checknr compile_et error gss hxtool kgetcred kinit
klist ldd less lex locale login m4 man menuc mk_cmds
mklocale msgc openssl rpcgen rpcinfo sdiff spell ssh
string2key telnet tn3270 verify_krb5_conf xlint

branches: 1.2.30;
WARNS=3

deroff, from OpenBSD. Needed for spell(1) which I'll be pulling in shortly.

The code came from 32v and then 4.4BSD. After the code was freed by
Caldera, it was cleaned up and ANSIfied by Todd Miller for OpenBSD.

I've added a TODO with several items on it, basically code cleanup and
adding support for mdoc. As it stands, this won't yet pass WARNS=1.

We already pass WARNS=3.

deroff, from OpenBSD. Needed for spell(1) which I'll be pulling in shortly.

The code came from 32v and then 4.4BSD. After the code was freed by
Caldera, it was cleaned up and ANSIfied by Todd Miller for OpenBSD.

I've added a TODO with several items on it, basically code cleanup and
adding support for mdoc. As it stands, this won't yet pass WARNS=1.

Improve -ml description, wording from jmc@openbsd.

Use more macros. Sort -m arguments and fix their descriptions.
Break some lines to fit 80 characters per line.

deroff, from OpenBSD. Needed for spell(1) which I'll be pulling in shortly.

The code came from 32v and then 4.4BSD. After the code was freed by
Caldera, it was cleaned up and ANSIfied by Todd Miller for OpenBSD.

I've added a TODO with several items on it, basically code cleanup and
adding support for mdoc. As it stands, this won't yet pass WARNS=1.

deroff: fix lint warnings

deroff: remove unused macro

The '\cp' in the macro's expansion triggered a lint warning about the
dubious character escape '\c'.

branches: 1.12.12;
- add or adjust /* FALLTHROUGH */ where appropriate
- add __unreachable() after functions that can return but won't in
this case, and thus can't be marked __dead easily

branches: 1.11.26;
fix unused variable warnings

Remove copyright, use __RCSID.

branches: 1.9.2; 1.9.8;
Use __dead. Be a bit more consistent about static.__dead. Be a bit more
consistent about static.

Kill self assignment

Remove superfluous parenthesis in #ifdef DEBUG.
From Henning Petersen in PR 41844.

fix -Wsign-compare issues

branches: 1.5.12;
convert __attribute__s to applicable cdefs.h macros

include sys/cdefs.h so that __attribute__ can be fixed later

branches: 1.3.12;
Sync usage with man page (from jmc@openbsd).

WARNS=3

deroff, from OpenBSD. Needed for spell(1) which I'll be pulling in shortly.

The code came from 32v and then 4.4BSD. After the code was freed by
Caldera, it was cleaned up and ANSIfied by Todd Miller for OpenBSD.

I've added a TODO with several items on it, basically code cleanup and
adding support for mdoc. As it stands, this won't yet pass WARNS=1.