From: Joseph Myers <josmyers@redhat.com>
To: Alejandro Colomar <alx@kernel.org>
Cc: libc-alpha@sourceware.org, uecker@tugraz.at, gcc@gcc.gnu.org,
Paul Eggert <eggert@cs.ucla.edu>,
linux-man@vger.kernel.org, xry111@xry111.site, jakub@redhat.com,
lh_mouse@126.com, jwakely.gcc@gmail.com,
Richard.Earnshaw@arm.com, sam@gentoo.org,
ben.boeckel@kitware.com, heiko.eissfeldt@siemens.com,
dmalcolm@redhat.com
Subject: Re: n3294 - The restrict function attribute as a replacement of the restrict qualifier
Date: Fri, 26 Jul 2024 20:30:33 +0000 (UTC) [thread overview]
Message-ID: <48bf010-43ec-6761-13b1-55864296a90@redhat.com> (raw)
In-Reply-To: <dcmpclh7v3m263hsynbpjvroi4ldbiv6ig4tuug6ieyovcgv7n@vxojhbpm4bst>
On Fri, 26 Jul 2024, Alejandro Colomar via Gcc wrote:
> I don't see why it should not apply to void*. memcpy(3) should get this
> attribute:
>
> [[alx::restrict(1)]]
> [[alx::restrict(2)]]
> void *memcpy(void *dst, const void *src, size_t n);
That would disallow copying between disjoint subarrays within the same
toplevel object (and there's no way to specify an array size for void *),
which hardly seems right.
> BTW, the author of n2529 didn't follow up, right? I'd like that in, so
> I'll prepare something after n2906 is merged. Martin, would you mind
> pinging me about it?
See reflector message SC22WG14.18575, 17 Nov 2020 (the former convenor
replying when I asked about just that paper). As far as I know the author
has not yet provided an updated version / asked for it to be added to a
meeting agenda.
--
Joseph S. Myers
josmyers@redhat.com
next prev parent reply other threads:[~2024-07-26 20:31 UTC|newest]
Thread overview: 76+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20240705130249.14116-2-alx@kernel.org>
[not found] ` <38982a470643f766747b0ca06b27ca859a87b101.camel@xry111.site>
2024-07-05 14:37 ` [PATCH v1] Remove 'restrict' from 'nptr' in strtol(3)-like functions Alejandro Colomar
2024-07-05 15:02 ` Martin Uecker
2024-07-05 15:23 ` Alejandro Colomar
2024-07-05 15:34 ` Martin Uecker
2024-07-05 15:53 ` Alejandro Colomar
2024-07-05 16:01 ` Xi Ruoyao
2024-07-05 16:17 ` Xi Ruoyao
2024-07-05 16:24 ` Jonathan Wakely
2024-07-05 16:30 ` Martin Uecker
2024-07-05 19:28 ` Alejandro Colomar
2024-07-05 19:38 ` Jonathan Wakely
2024-07-05 19:47 ` Alejandro Colomar
2024-07-05 19:52 ` Jonathan Wakely
2024-07-05 20:11 ` Alejandro Colomar
2024-07-05 20:15 ` Emanuele Torre
2024-07-05 20:31 ` Ben Boeckel
2024-07-05 20:25 ` Martin Uecker
2024-07-05 20:28 ` Jonathan Wakely
2024-07-05 20:41 ` Alejandro Colomar
2024-07-05 20:55 ` Alejandro Colomar
2024-07-05 21:39 ` Jonathan Wakely
2024-07-05 22:02 ` Alejandro Colomar
2024-07-05 22:04 ` Alejandro Colomar
2024-07-06 2:24 ` Xi Ruoyao
2024-07-06 2:39 ` Xi Ruoyao
2024-07-06 5:51 ` [[gnu::null_terminated_string_arg(1)]] on strtol(1) (was: [PATCH v1] Remove 'restrict' from 'nptr' in strtol(3)-like) functions Alejandro Colomar
2024-07-06 6:10 ` [PATCH v1] Remove 'restrict' from 'nptr' in strtol(3)-like functions Alejandro Colomar
2024-07-06 6:11 ` Alejandro Colomar
2024-07-05 16:32 ` Sam James
2024-07-05 16:02 ` Martin Uecker
2024-07-05 16:11 ` Jonathan Wakely
2024-07-05 16:21 ` Richard Earnshaw (lists)
2024-07-05 15:54 ` LIU Hao
2024-07-05 15:55 ` Xi Ruoyao
2024-07-05 16:32 ` Alejandro Colomar
2024-07-05 17:32 ` Alejandro Colomar
2024-07-05 19:41 ` [WG14] Request for document number; strtol restrictness Alejandro Colomar
2024-07-07 15:46 ` Daniel Plakosh
2024-07-09 19:00 ` Alejandro Colomar
2024-07-09 20:04 ` Daniel Plakosh
2024-07-07 1:58 ` WG14 paper for removing restrict from nptr in strtol(3) Alejandro Colomar
2024-07-07 7:15 ` Martin Uecker
2024-07-07 11:07 ` Alejandro Colomar
2024-07-07 12:21 ` Martin Uecker
2024-07-07 13:10 ` Alejandro Colomar
2024-07-07 10:42 ` Paul Eggert
2024-07-07 12:42 ` Alejandro Colomar
2024-07-07 17:30 ` Paul Eggert
2024-07-07 22:52 ` Alejandro Colomar
2024-07-09 12:09 ` Paul Eggert
2024-07-09 17:36 ` Alejandro Colomar
2024-07-08 14:30 ` David Malcolm
2024-07-08 15:01 ` Alejandro Colomar
2024-07-08 16:05 ` Martin Uecker
2024-07-08 20:17 ` Alejandro Colomar
2024-07-09 5:58 ` Martin Uecker
2024-07-09 9:26 ` Alejandro Colomar
2024-07-08 22:48 ` David Malcolm
2024-07-09 9:07 ` Alejandro Colomar
2024-07-09 9:18 ` Jakub Jelinek
2024-07-09 10:28 ` Alejandro Colomar
2024-07-09 11:28 ` Alejandro Colomar
2024-07-09 22:42 ` n3294 - The restrict function attribute as a replacement of the restrict qualifier Alejandro Colomar
2024-07-26 16:24 ` Joseph Myers
2024-07-26 16:35 ` G. Branden Robinson
2024-07-26 19:53 ` Alejandro Colomar
2024-07-26 18:50 ` Paul Eggert
2024-07-26 20:11 ` Alejandro Colomar
2024-07-26 20:30 ` Joseph Myers [this message]
2024-07-26 21:14 ` Alejandro Colomar
2024-07-26 21:22 ` Joseph Myers
2024-07-26 21:49 ` Alejandro Colomar
2024-07-26 22:03 ` Martin Uecker
2024-07-26 22:26 ` Alejandro Colomar
2024-07-26 22:59 ` Martin Uecker
2024-07-27 8:44 ` Alejandro Colomar
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