Date: Sat, 20 Apr 2002 14:30:23 -0700 From: Bill Fenner <fenner@electricrain.com> To: "J. Mallett" <jmallett@FreeBSD.ORG> Cc: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: Re: cvs commit: src/usr.bin/m4 gnum4.c Message-ID: <20020420213023.GF855@electricrain.com> In-Reply-To: <20020420212849.GM20367@FreeBSD.ORG> References: <200204202113.g3KLD0d68670@freefall.freebsd.org> <20020420212109.GC855@electricrain.com> <20020420212849.GM20367@FreeBSD.ORG>
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On Sat, Apr 20, 2002 at 09:28:49PM +0000, J. Mallett wrote:
> No, seriously, [putting on dunce cap preemptively] what's %zu?
z is the c99 length modifier for size_t. So instead of guessing
whether it's better to do %u, %lu or %llu based on what you think
a size_t might end up being, you simply do %zu and that's the right
size.
I made the "blow gcc's mind" comment because I doubt our -Wformat
knows about "z". I also don't know for sure when the c99 printf
changes will be merged to -stable, which may create maintainability
issues for you.
("man 3 printf" has a nice little table of all the supported
length modifiers; the new ones for c99 are hh, ll, j, t, z.)
Bill
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