Re: Does getopt() return "-1", or "EOF", at end?

Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> writes:

> I notice that in some places we compare the result of getopt(3) to
> "EOF", and in some other places we compare it to "-1". I think we
> should standardize on one or the other; anyone have an opinion
> which it should be?
>
> The man pages I have here (HPUX and Linux) both describe the
> end-of-switches return value as being "-1". The glibc sources also
> use "-1". Replacing this by EOF seems more readable but perhaps is
> not strictly correct.
>
> Are there any platforms that define EOF as something other than -1?

I don't know, but the Solaris getopt() manpage specifies it as
returning EOF rather than -1. I *think* POSIX mandates EOF == -1
anyhow but I'm certainly not sure of that (and we run on non-POSIX
systems too I guess).

-Doug
--
Let us cross over the river, and rest under the shade of the trees.
--T. J. Jackson, 1863