Weird lint messages about C library

[Jeffrey W Percival]

When I run lint on my C programs (Ultrix 3.0 on a VS2000)
I get (among other stuff) the following:

signal, arg. 2 used inconsistently      llib-lc(379)  ::  llib-lc(358)
getsockopt, arg. 4 used inconsistently  llib-lc(459)  ::  llib-lc(437)
getsockopt, arg. 5 used inconsistently  llib-lc(459)  ::  llib-lc(437)
utimes, arg. 2 used inconsistently      llib-lc(530)  ::  llib-lc(501)

This is repeated 2 more times (for a total of 12 lines).

I'm trying to be a lint-free kind-o-guy, so what gives?
-- 
Jeff Percival (jwp at larry.sal.wisc.edu)