Date: Wed, 30 Sep 2020 22:39:08 +0200 From: Alejandro Colomar <colomar.6.4.3@...il.com> To: Joseph Myers <joseph@...esourcery.com> Cc: libc-alpha@...rceware.org, libc-coord@...ts.openwall.com, libstdc++ <libstdc++@....gnu.org>, gcc@....gnu.org, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, linux-man <linux-man@...r.kernel.org>, Jonathan Wakely <jwakely@...hat.com>, Florian Weimer <fweimer@...hat.com>, Ville Voutilainen <ville.voutilainen@...il.com>, enh@...gle.com, Rusty Russell <rusty@...tcorp.com.au>, Alejandro Colomar <colomar.6.4.3@...il.com> Subject: Re: Expose 'array_length()' macro in <sys/cdefs.h> or <sys/param.h> On 2020-09-30 17:58, Joseph Myers wrote: > For some reason http://www.open-std.org/jtc1/sc22/wg14/www/docs/n2529.pdf > doesn't seem to have reached the agenda of a WG14 meeting yet, but adding > a language feature like that to the standard would be another approach. > Hi Joseph, Yes, that would be great! I hope they add that to the language. When/if that happens, nitems() could be `#define nitems(arr) _Lengthof(arr)` for std >= c2x. In the meantime, I would add this macro to libc. Maybe gcc could add such a great feature as an extension even before the standard does... Too many wishes :) BTW, I sent a PATCH v4 that I should've sent --in-reply-to PATCH v3 in this thread (but I forgot to do so); I'll link to it here: https://sourceware.org/pipermail/libc-alpha/2020-September/117986.html Thanks, Alex
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