Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.1 6/24/83; site brl-vgr.ARPA Path: utzoo!watmath!clyde!burl!ulysses!mhuxl!eagle!harpo!seismo!brl-vgr!gwyn From: gwyn@brl-vgr.ARPA (Doug Gwyn ) Newsgroups: net.lang.c Subject: Re: Is #define NULL 0L ok? Message-ID: <2393@brl-vgr.ARPA> Date: Mon, 12-Mar-84 01:31:50 EST Article-I.D.: brl-vgr.2393 Posted: Mon Mar 12 01:31:50 1984 Date-Received: Mon, 12-Mar-84 07:23:46 EST References: <4072@edai.UUCP> Organization: Ballistics Research Lab Lines: 9 NO NO NO You MUST cast the 0 to the proper pointer type when passing it as an actual argument to a function: foo( (char *)0 ); for example. There is no other way of guaranteeing that the function gets a pointer of the proper type.