Jeff King <p...@peff.net> writes:

> According to the POSIX quote above, it sounds like we could do:
>
>   #if defined (_SC_OPEN_MAX)
>   {
>           long max;
>           errno = 0;
>           max = sysconf(_SC_OPEN_MAX);
>           if (0 < max) /* got the limit */
>                   return max;
>           else if (!errno) /* unlimited, cast to int-max */
>                   return max;
>           /* otherwise, fall through */
>   }
>   #endif
>
> Obviously you could collapse the two branches of the conditional, though
> I think it deserves at least a comment to explain what is going on.

Yes, that is locally OK, but depending on how the caller behaves, we
might need to have an extra saved_errno dance here, which I didn't
want to get into...
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