Varargs problem

[Chris Torek]

In article <4YxPuc200VsnE_B3Jy at andrew.cmu.edu> bobg+ at andrew.cmu.edu
(Robert Steven Glickstein) writes:
>I wish to extract a variable of type "pointer to function returning int"
>[(int (*) ())] from a varargs parameter list, and I can't.
>        fn = va_arg(ap, int (*) ());

va_arg must be handed a type that can legally have one `*' added on the
end; int (*)() is not such a type.

The solution is to create a typedef:

	typedef int (*intfn_t)();
	...
	fn = va_arg(ap, intfn_t);

With one small change (`typedef int (*intfn_t)(void)') one gets an ANSI-
style extraction.  (Alas, the `va_start' invocations and function
declarations must be changed.)
-- 
In-Real-Life: Chris Torek, Univ of MD Comp Sci Dept (+1 301 454 7163)
Domain:	chris at mimsy.umd.edu	Path:	uunet!mimsy!chris