Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Path: utzoo!linus!philabs!cmcl2!harvard!seismo!elsie!ado
From: ado@elsie.UUCP (Arthur David Olson)
Newsgroups: net.unix-wizards,net.lang.c
Subject: Re: ANSI X3J11 onexit() implementation
Message-ID: <6102@elsie.UUCP>
Date: Sat, 21-Jun-86 15:28:07 EDT
Article-I.D.: elsie.6102
Posted: Sat Jun 21 15:28:07 1986
Date-Received: Mon, 23-Jun-86 03:14:50 EDT
References: <1438@brl-smoke.ARPA>
Organization: NIH-LEC, Bethesda, MD
Lines: 24
Keywords: X3J11 onexit freebie
Xref: linus net.unix-wizards:15499 net.lang.c:8742
Summary: a qualified second to the motion

In article <1438@brl-smoke.ARPA>, gwyn@brl-smoke.ARPA (Doug Gwyn) writes:
> I have just posted a public-domain implementation of the ANSI X3J11
> (draft C language standard) "onexit" function. . .I am now in a position to
> criticize the interface. . .A much cleaner interface would be:
> 
> 	int onexit(void (*func)(void));
> 
> which would return zero or not depending on whether the function
> was successfully registered.  I think the current awkward design is
> an artifact of the original Whitesmiths, Ltd. implementation. . .

Having suggested the same myself (see mod.std.c archives), I'll second the
motion. . .with a qualification.  Since there are existing (Whitesmiths)
implementations with an interface different from that described above, it's
almost surely best to use a different name for the above interface--for
example,

 	int atexit(void (*func)(void));

This avoids surprises when moving existing source code to an ANSI standard
system.
--
	UUCP: ..decvax!seismo!elsie!ado		ARPA: elsie!ado@seismo.ARPA
	DEC, VAX, Elsie & Ado are Digital, Borden & Shakespeare trademarks.