Date: Wed, 09 Oct 2002 10:31:06 -0700 From: Peter Wemm <peter@wemm.org> To: Bruce Evans <bde@zeta.org.au> Cc: Mike Barcroft <mike@FreeBSD.ORG>, Andrew Gallatin <gallatin@cs.duke.edu>, freebsd-arch@FreeBSD.ORG Subject: Re: lp64 vs lp32 printf Message-ID: <20021009173106.9D1862A88D@canning.wemm.org> In-Reply-To: <20021009161756.E4040-100000@gamplex.bde.org>
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Bruce Evans wrote: > On Tue, 8 Oct 2002, Mike Barcroft wrote: > > > Andrew Gallatin <gallatin@cs.duke.edu> writes: > > > > > > What's the accepted way to printf something (like sizeof()) which > > > boils down to "unsigned int" on x86 and "unsigned long" on the LP64 > > > platforms? > > > > In userland you can use %z for printing size_t's. In the kernel, > > casting to intmax_t/uintmax_t and using %j is correct. > > Um, using intmax_t to print size_t's would be incorrect, since it is > signed. Using uintmax_t would be bloat. Very few typedefed types > need the full bloat of [u]intmax_t, and size_t is unlikely to become > one of them before casting it to uintmax_t to print it becomes a style > bug in the kernel too (when %z is implemented). Bring it on! The sooner %z gets here the better. The only problem is that gcc has been taught that %z means something different in the kernel. :-( Cheers, -Peter -- Peter Wemm - peter@wemm.org; peter@FreeBSD.org; peter@yahoo-inc.com "All of this is for nothing if we don't go to the stars" - JMS/B5 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-arch" in the body of the message
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