From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on inbox.vuxu.org X-Spam-Level: X-Spam-Status: No, score=-1.8 required=5.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,MAILING_LIST_MULTI,RCVD_IN_DNSWL_LOW, T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.4 Received: (qmail 20715 invoked from network); 27 May 2023 06:50:05 -0000 Received: from second.openwall.net (193.110.157.125) by inbox.vuxu.org with ESMTPUTF8; 27 May 2023 06:50:05 -0000 Received: (qmail 25665 invoked by uid 550); 27 May 2023 06:50:01 -0000 Mailing-List: contact musl-help@lists.openwall.com; run by ezmlm Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-ID: Reply-To: musl@lists.openwall.com Received: (qmail 25633 invoked from network); 27 May 2023 06:50:00 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=inria.fr; s=dc; h=date:from:to:cc:subject:message-id:in-reply-to: references:mime-version; bh=0AFLqWRxsB+7JTKQBiJSszX8QGF4PphAMO42u6NnpPs=; b=rLvIC6Ty/wkaXsXXIifd0RQv27XNjy73klABbNpDxy3YllpFyHaf7bDX ehFKsrMJyxEdFCKlcsRjuPTE+UHfOH4m42AQlavsDvLfEYOuWB4phGQdf wyZq9ymrzlVFcN26HP+GDDEgYTtSaT+EhHh/Q8mPFF4+85isKsf/1Cpdk U=; Authentication-Results: mail2-relais-roc.national.inria.fr; dkim=none (message not signed) header.i=none; spf=SoftFail smtp.mailfrom=jens.gustedt@inria.fr; dmarc=fail (p=none dis=none) d=inria.fr X-IronPort-AV: E=Sophos;i="6.00,196,1681164000"; d="scan'208";a="109973501" Date: Sat, 27 May 2023 08:49:47 +0200 From: =?UTF-8?B?SuKCkeKCmeKCmw==?= Gustedt To: Rich Felker Cc: Joakim Sindholt , musl@lists.openwall.com Message-ID: <20230527084947.71628791@inria.fr> In-Reply-To: <20230526205720.GP4163@brightrain.aerifal.cx> References: <20230526115236.b15f8bf97a529da07fba514f@zhasha.com> <20230526121829.4b9a9538@inria.fr> <20230526201603.GM4163@brightrain.aerifal.cx> <20230526223552.7878f5f0@inria.fr> <20230526205720.GP4163@brightrain.aerifal.cx> Organization: inria.fr X-Mailer: Claws Mail 4.0.0 (GTK+ 3.24.33; x86_64-pc-linux-gnu) X-Face: iVBORw0KGgoAAAANSUhEUgAAADAAAAAwBAMAAAClLOS0AAAAAXNSR0IArs4c6QAAACRQTFRFERslNjAsLTE9Ok9wUk9TaUs8iWhSrYZkj42Rz6aD3sGZ MIME-Version: 1.0 Content-Type: multipart/signed; boundary="Sig_/gPL.rAe=/txXES56KazZePK"; protocol="application/pgp-signature"; micalg=pgp-sha1 Subject: Re: [musl] [C23 string conversion 1/3] C23: add the new memset_explicit function --Sig_/gPL.rAe=/txXES56KazZePK Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Rich, on Fri, 26 May 2023 16:57:21 -0400 you (Rich Felker ) wrote: > Do you have something in mind about how the explcit_bzero > implementation we have doesn't do that? I would be more comfortable with a stronger synchronization barrier that works for all memory models and also in the presence of threads and signals. So maybe using `a_barrier()`? Also I think that relying on the compiler's `memset` is not a good strategy. This puts us at their merci of whatever efficiency games they are playing, now or in the future. Thanks J=E2=82=91=E2=82=99=E2=82=9B --=20 :: ICube :::::::::::::::::::::::::::::: deputy director :: :: Universit=C3=A9 de Strasbourg :::::::::::::::::::::: ICPS :: :: INRIA Nancy Grand Est :::::::::::::::::::::::: Camus :: :: :::::::::::::::::::::::::::::::::::: =E2=98=8E +33 368854536 :: :: https://icube-icps.unistra.fr/index.php/Jens_Gustedt :: --Sig_/gPL.rAe=/txXES56KazZePK Content-Type: application/pgp-signature Content-Description: OpenPGP digital signature -----BEGIN PGP SIGNATURE----- iF0EARECAB0WIQSN9stI2OFN1pLljN0P0+hp2tU34gUCZHGoCwAKCRAP0+hp2tU3 4jQzAJ9bh8wsXs2587L4t5Ylu/Z+5l89ZwCffx015TEYo/PYvTlNc2vXvUUbExw= =xtUM -----END PGP SIGNATURE----- --Sig_/gPL.rAe=/txXES56KazZePK--