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Path: utzoo!linus!decvax!tektronix!teklds!zeus!keithr
From: keithr@zeus.UUCP (Keith Rule)
Newsgroups: net.lang.c
Subject: Shouldn't this work?
Message-ID: <347@zeus.UUCP>
Date: Thu, 16-Aug-84 16:50:31 EDT
Article-I.D.: zeus.347
Posted: Thu Aug 16 16:50:31 1984
Date-Received: Sat, 25-Aug-84 02:57:53 EDT
Organization: Tektronix, Beaverton OR
Lines: 42

[bug food]


	The following program fragment demonstates a problem with
	"void". I wish to build a jump table to "void" functions,
	however this program fragment, which defines the jump table,
        doesn't compile. If I replace all the "void"s with "int"s the 
	fragment compiles without any problems.

 
	1	#include <stdio.h>
	2
	3	typedef struct Builtin {
	4		char *name;
	5		void (*func)();
	6	} BUILTIN;
	7
	8	extern void beep();
	9
	10	BUILTIN builtins[] = {
	11		{"beep",		beep},
	12		{(char *) NULL,		(void (*)()) NULL}
	13	};

	Output from lint. The C complier also produces the first 
	error message.

	tmp.c:
	tmp.c(11): operands of = have incompatible types
	tmp.c(11): illegal initialization
	builtins defined( tmp.c(10) ), but never used

	Would someone please tell me what I'm doing wrong. 
	I'm stumped.

	Thanks in Advance,

	Keith Rule

	tektronix!teklds!keithr