From: Richard Dawe <rich AT phekda DOT freeserve DOT co DOT uk>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: stdarg.h problem(s)?
Date: Sat, 11 Jan 2003 09:46:00 +0000
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To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp
Reply-To: djgpp AT delorie DOT com

Hello.

Edd Dawson wrote:
[snip]
> > Edd Dawson <hotcakes AT planetquake DOT com> wrote:
> > : I am currently running into problems when making functions of an
> arbitrary
> > : number of arguments in C/C++.
> > : I am using DJGPP version 3.2. Here's a reduced version of the code I'm
> > : trying to work with:
> >
> > : //Code starts here: test.c
> > : #include <stdio.h>
> > : #include <stdarg.h>
> >
> > : void Warning(char *warningstring, ...)
> > : {
> > :    va_list arg_list;
> > :    va_start(arg_list, warningstring);
> > :    printf("WARNING: ");
> > :    printf(warningstring, arg_list);
> > :    va_end(arg_list);
> > :    return;
> > : }

Try using vprintf instead. Instead of using:

    printf(warningstring, arg_list);

use:

    vprintf(warningstring, arg_list);

Apart from that, the code looks fine. (I haven't tried compiling it.) You may
want to look at this info page, if you want gcc to produce printf-style format
warnings:

    info gcc 'c extensions' 'function attributes'

[snip]
> I think I'll try deleting DJGPP and reinstalling from scratch as I may have
> missed something when trying to remove everything from my system last time
> around.

I don't think you need to go that far. Try reinstalling djdev203. A refreshed
version of that was released, which should fix the problem above.
 
> Regardless, my code appears to be incorrect. Can anyone help?

Hope that helps. Regards,

-- 
Richard Dawe [ http://www.phekda.freeserve.co.uk/richdawe/ ]