Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!gatech!uflorida!haven!ncifcrf!nlm-mcs!adm!smoke!gwyn
From: gwyn@smoke.BRL.MIL (Doug Gwyn)
Newsgroups: comp.lang.c
Subject: Re: Variarg Neophyte Question
Message-ID: <10714@smoke.BRL.MIL>
Date: 12 Aug 89 06:52:38 GMT
References: <2658@cbnewsm.ATT.COM>
Reply-To: gwyn@brl.arpa (Doug Gwyn)
Organization: Ballistic Research Lab (BRL), APG, MD.
Lines: 16

In article <2658@cbnewsm.ATT.COM> rgr@cbnewsm.ATT.COM (Duke Robillard) writes:
>I was just looking at variargs.h for the first time and
>found a little inconsistency.  In K&R 2, it says (page 254)
>that va_start() gets two arguments :
>	va_start(va_list ap, lastarg);
>but on my Sun (running SunOS 4.0) it only wants the first
>argument.  What's up?  Is somebody out of date?  

Geez, where to begin.  First, note that K&R 2nd Ed. explicitly describes
Standard C, not the historical C found implemented on your Sun.  Next,
note that K&R 2 describes the macros defined by including ,
not  which was a precursor that served as a rough guide when
X3J11 designed the specification for .  The Standard C variadic
argument mechanism is considerably different from the old varargs
approach; many compiler vendors will be providing both headers for
reasons of backward compatibility.  Finally, note how to spell .