Date: Fri, 17 Jan 2003 02:23:51 +0000 From: Tony Finch <dot@dotat.at> To: Nate Lawson <nate@root.org> Cc: Bruce Evans <bde@zeta.org.au>, Hidetoshi Shimokawa <simokawa@FreeBSD.org>, cvs-all@FreeBSD.org, cvs-committers@FreeBSD.org Subject: Re: cvs commit: src/sys/dev/firewire firewire.c fwdev.c fwohci.c fwohcivar.h Message-ID: <20030117022351.B20888@chiark.greenend.org.uk> In-Reply-To: <Pine.BSF.4.21.0301161036320.46845-100000@root.org>; from nate@root.org on Thu, Jan 16, 2003 at 10:38:07AM -0800 References: <20030117052637.I3675-100000@gamplex.bde.org> <Pine.BSF.4.21.0301161036320.46845-100000@root.org>
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On Thu, Jan 16, 2003 at 10:38:07AM -0800, Nate Lawson wrote: > > Yes, I've had to discard volatile also (when dealing with freeing an > aio_buf). I'm interested why it can't be cast directly to (void *). Why > the indirection through unitptr_t? Once you lose the pointerness of a value the qualifications of what it points to have been lost as well. There isn't a warning for casting from any kind of pointer to uintptr_t or vice versa (regardless of qualification) whereas direct casting fails to hide the difference. C would benefit from parametic polymorphism for qualifiers which would solve this problem. Tony. -- f.a.n.finch <dot@dotat.at> http://dotat.at/ IRISH SEA: SOUTHWEST 7 TO SEVERE GALE 9, OCCASIONALLY STORM FORCE 10 AT FIRST, VEERING WEST 6. RAIN THEN SHOWERS. MODERATE BECOMING GOOD. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe cvs-all" in the body of the message
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