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From: gwyn@smoke.BRL.MIL (Doug Gwyn)
Newsgroups: comp.unix.wizards
Subject: Re: calling one varargs routine from another (how?!)
Message-ID: <11436@smoke.BRL.MIL>
Date: 27 Oct 89 21:08:20 GMT
References: <21293@adm.BRL.MIL>
Reply-To: gwyn@brl.arpa (Doug Gwyn)
Organization: Ballistic Research Lab (BRL), APG, MD.
Lines: 10

In article <21293@adm.BRL.MIL> mark@spider.co.uk (Mark Valentine) writes:
-Q:  Is there a portable way, both in ANSI and traditional C, to call a
-    varargs function such as
-	void error(char *message, ...)
-    from another such as
-	void fatal(char *message, ...)

No, the best you can do is for the called function to accept a va_list
parameter that the caller initializes via va_start() from its own list.
Even then, I've heard of implementations that would do the wrong thing.