Date: Sat, 16 Mar 2002 10:57:51 -0500 From: "Brian F. Feldman" <green@FreeBSD.ORG> To: Poul-Henning Kamp <phk@critter.freebsd.dk> Cc: Bruce Evans <bde@zeta.org.au>, "M. Warner Losh" <imp@village.org>, des@ofug.org, arch@FreeBSD.ORG Subject: Re: HEADS UP: caddr_t sweep Message-ID: <200203161557.g2GFvqt45950@green.bikeshed.org> In-Reply-To: Your message of "Sat, 16 Mar 2002 13:10:50 %2B0100." <37367.1016280650@critter.freebsd.dk>
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Poul-Henning Kamp <phk@critter.freebsd.dk> wrote: > I would like the argument in ioctl funtions to either become > a void * argument or for caddr_t to become a void *. Pointer arithmetic is defined for char *. The void type has no size and therefore pointer arithmetic is not defined for it (except as a hack in GCC...). The problem with caddr_t being a char * is that C does not actually require that every pointer can be coerced to/from char *, but it does require that for void *. -- Brian Fundakowski Feldman \'[ FreeBSD ]''''''''''\ <> green@FreeBSD.org <> bfeldman@tislabs.com \ The Power to Serve! \ Opinions expressed are my own. \,,,,,,,,,,,,,,,,,,,,,,\ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-arch" in the body of the message
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