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Message-ID: <lb4cnscy5ftoxegnxzyeuceh7js2vi3nxqm5lx76jvj2ekuupl@lw7jtghjyfqy>
Date: Thu, 19 Jun 2025 15:11:36 +0200
From: Alejandro Colomar <alx@...nel.org>
To: Rich Felker <dalias@...c.org>
Cc: Vincent Lefevre <vincent@...c17.net>, linux-man@...r.kernel.org,
musl@...ts.openwall.com, libc-alpha@...rceware.org, Paul Eggert <eggert@...ucla.edu>,
Bruno Haible <bruno@...sp.org>, bug-gnulib@....org
Subject: Re: malloc.3: Clarify realloc(3) standards conformance
Hi Rich,
On Thu, Jun 19, 2025 at 09:04:51AM -0400, Rich Felker wrote:
> > > n?:1 is a GNU extension:
> > >
> > > warning: ISO C forbids omitting the middle term of a ‘?:’ expression [-Wpedantic]
> > >
> > > with gcc -pedantic -std=c23, and such code should not be given in
> > > examples (as a workaround should still be valid for portable code).
> >
> > Hmmm, I guess I can write it as n?n:1.
> >
> > I'll write a proposal to standardize ?: in ISO C too.
>
> That still doesn't make it appropriate to recommend in a man page for
> people who will be writing code mostly to non bleeding edge (some even
> C89) versions of the standard.
>
> Examples and proscriptions should be minimally fancy, not using new or
> clever things unnecessarily in ways that could break or just not
> immediately be understood by the reader.
Yep, I meant that as a side note to address the fact that this is non-
standard.
I've changed this patch to use n?n:1 as said above.
Have a lovely day!
Alex
>
> Rich
>
--
<https://www.alejandro-colomar.es/>
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