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From: Keith Thompson <kst-u@mib.org>
Newsgroups: comp.lang.c
Subject: Re: va_start without the first argument?
Date: Fri, 10 Mar 2017 12:32:00 -0800
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Thiago Adams <thiago.adams@gmail.com> writes:
> Is it possible to create a var args function without the 
> first argument? (firstArgument in va_start)
>
> void F(...)

No.  The va_start macro requires the name of the last non-variadic
parameter, and syntax of a parameter-type-list requires at least one
parameter-declaration (N1570 6.7.6).

[...]

-- 
Keith Thompson (The_Other_Keith) kst-u@mib.org  <http://www.ghoti.net/~kst>
Working, but not speaking, for JetHead Development, Inc.
"We must do something.  This is something.  Therefore, we must do this."
    -- Antony Jay and Jonathan Lynn, "Yes Minister"