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From: Kaz Kylheku <643-408-1753@kylheku.com>
Newsgroups: comp.lang.c
Subject: Re: encapsulating directory operations
Date: Tue, 10 Jun 2025 21:34:23 -0000 (UTC)
Organization: A noiseless patient Spider
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On 2025-06-10, Keith Thompson <Keith.S.Thompson+u@gmail.com> wrote:
> I find the reservation of potential errno macro names annoying.

If the standard contained /no/ statements about what a given header
file may reserve, then /any/ identifier whatsoever would be a potential
clash.

The errno reservation is kind of good because implementors often extend
the set of errno constants. POSIX has a lot more of them than ISO C, and
there are some vendor-specific ones.

Anyway, you can safely ignore the reservation theatre, and just
deal with clashes that happen, when they happen. (If you're lucky,
that could just be never).

Anyway, ISO C, POSIX and vendors have historically introduced new
identifiers in spaces that were not previously declared as reserved.
If you're ever hit by that, you will feel like a completel sucker if
you've religiously adhered to namespaces from your end.

-- 
TXR Programming Language: http://nongnu.org/txr
Cygnal: Cygwin Native Application Library: http://kylheku.com/cygnal
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