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From: tps@chem.ucsd.edu (Tom Stockfisch)
Newsgroups: comp.lang.c
Subject: Re: Building function call at runtime
Keywords: function variable parameter stack
Message-ID: <622@chem.ucsd.EDU>
Date: 11 Dec 89 01:10:29 GMT
References: <307@gtenmc.UUCP>
Reply-To: tps@chem.ucsd.edu (Tom Stockfisch)
Organization: Chemistry Dept, UC San Diego
Lines: 21

In article <307@gtenmc.UUCP> stumpf@gtenmc.UUCP (Jon S. Stumpf) writes:
>	How do I get the variables off the application stack and
>	onto the runtime stack so error() can use <varargs.h> ?

Use vfprintf(), which takes a varargs list as an argument:

static void
error(ap)
	va_list	ap;
{
	FILE	*fp;
	char	*format;

	fp =		va_arg( ap, FILE * );
	format =	va_arg( ap, char * );
	vfprintf( fp, format, ap );
	handleError();
}
-- 

|| Tom Stockfisch, UCSD Chemistry	tps@chem.ucsd.edu