Date: Fri, 6 Aug 1999 15:43:02 -0700 From: Matthew Hunt <mph@astro.caltech.edu> To: Marc Tardif <intmktg@CAM.ORG> Cc: freebsd-hackers@FreeBSD.ORG Subject: Re: prototypes with __P Message-ID: <19990806154302.A74040@wopr.caltech.edu> In-Reply-To: <Pine.SOL.4.10.9908061827240.41-100000@Stratus.CAM.ORG>; from Marc Tardif on Fri, Aug 06, 1999 at 06:33:30PM -0400 References: <Pine.SOL.4.10.9908061827240.41-100000@Stratus.CAM.ORG>
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On Fri, Aug 06, 1999 at 06:33:30PM -0400, Marc Tardif wrote: > If anyone could point me in the right direction, and maybe even show me > how I could've found the answer myself, I'd appreciate. It's defined in /usr/include/sys/cdefs.h, among other places. I found it with: cd /usr/include find . -name \*.h | xargs grep 'define.*__P' (The regular expression given to grep matches "define", zero or more other characters that we don't care about, then "__P".) The intent of the macro is to allow the programmer to take advantage of ANSI-style function prototypes (and the error checking they provide) while not breaking the code on K&R compilers that don't support ANSI prototypes. I have no idea how much of the FreeBSD code would actually build on a K&R compiler. -- Matthew Hunt <mph@astro.caltech.edu> * Inertia is a property http://www.pobox.com/~mph/ * of matter. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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