Date: Sat, 17 Jan 2004 19:32:55 +0200 From: Ruslan Ermilov <ru@FreeBSD.org> To: "David O'Brien" <obrien@FreeBSD.org>, Tim Kientzle <kientzle@acm.org>, Mike Barcroft <mike@FreeBSD.org>, Garrett Wollman <wollman@FreeBSD.org>, Dag-Erling Smorgrav <des@FreeBSD.org>, hackers@FreeBSD.org Subject: Re: __restrict__ vs __restrict ? Message-ID: <20040117173255.GB21742@FreeBSD.org.ua> In-Reply-To: <20040117171928.GB38009@dragon.nuxi.com> References: <40088E75.5080908@acm.org> <20040117015809.GJ9410@FreeBSD.org.ua> <4008B3F9.6010903@acm.org> <20040117171928.GB38009@dragon.nuxi.com>
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--H1spWtNR+x+ondvy Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Sat, Jan 17, 2004 at 09:19:28AM -0800, David O'Brien wrote: > On Fri, Jan 16, 2004 at 08:03:05PM -0800, Tim Kientzle wrote: > > >No, we should be using the __restrict as coded. But I wonder why > > >we can't just use "restrict"... > >=20 > > Because that would really mess up any user program that used > > 'restrict' as a variable or function name. I think the > > current approach is the best. >=20 > Such code isn't portable to C99, which is still a goal of ours. I like > RU's suggestion, because it is straight C[99] code and not an > abstraction. I'll do a 'make world' test and see if we'd have trouble > with RU's form. >=20 The code I've posted has obvious troubles. It would take care of the following fragment for -std=3Dc89 and be pure C99 for -std=3Dc99, void foo(char * restrict fa) { } but will break this for -std=3Dc89: void restrict(void) { } We have a problem if we want to mix old C89 and new C99 code. Cheers, --=20 Ruslan Ermilov FreeBSD committer ru@FreeBSD.org --H1spWtNR+x+ondvy Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.4 (FreeBSD) iD8DBQFACXHHUkv4P6juNwoRAh40AJ91MCs99R3UCpY4vQqW0F5CzsLzwQCfYFrU qMB3pP/ecj1+xejgWyn1dOA= =O5Xy -----END PGP SIGNATURE----- --H1spWtNR+x+ondvy--
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