From owner-freebsd-current@FreeBSD.ORG  Mon Mar  1 21:47:00 2004
Return-Path: <owner-freebsd-current@FreeBSD.ORG>
Delivered-To: freebsd-current@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id ED93916A4CE
	for <current@freebsd.org>; Mon,  1 Mar 2004 21:47:00 -0800 (PST)
Received: from mailout2.pacific.net.au (mailout2.pacific.net.au [61.8.0.85])
	by mx1.FreeBSD.org (Postfix) with ESMTP id 4225F43D2D
	for <current@freebsd.org>; Mon,  1 Mar 2004 21:47:00 -0800 (PST)
	(envelope-from bde@zeta.org.au)
Received: from mailproxy2.pacific.net.au (mailproxy2.pacific.net.au
	[61.8.0.87])i225kMnX024874;	Tue, 2 Mar 2004 16:46:22 +1100
Received: from gamplex.bde.org (katana.zip.com.au [61.8.7.246])
	i225kJ5c020294;	Tue, 2 Mar 2004 16:46:21 +1100
Date: Tue, 2 Mar 2004 16:46:18 +1100 (EST)
From: Bruce Evans <bde@zeta.org.au>
X-X-Sender: bde@gamplex.bde.org
To: Erik Trulsson <ertr1013@student.uu.se>
In-Reply-To: <20040301142145.GA59401@falcon.midgard.homeip.net>
Message-ID: <20040302163959.R8656@gamplex.bde.org>
References: <200402291546.i1TFkZ0w070591@grimreaper.grondar.org>
	<20040301142145.GA59401@falcon.midgard.homeip.net>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII
cc: mark@grondar.org
cc: current@freebsd.org
Subject: Re: NULL vs 0 vs 0L bikeshed time
X-BeenThere: freebsd-current@freebsd.org
X-Mailman-Version: 2.1.1
Precedence: list
List-Id: Discussions about the use of FreeBSD-current
	<freebsd-current.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>,
	<mailto:freebsd-current-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-current>
List-Post: <mailto:freebsd-current@freebsd.org>
List-Help: <mailto:freebsd-current-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>,
	<mailto:freebsd-current-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Tue, 02 Mar 2004 05:47:01 -0000

On Mon, 1 Mar 2004, Erik Trulsson wrote:

> On a related note, is there some particular reason for having the C++
> definition depend on __LP64__ or could one not just as well define NULL
> as (0L) all the time there?

Mainly the same reason that 0 was only changed to (void *)0 (sic) for
the _KERNEL_ case only, but more so: the type sizes may be different
so sloppy but working code may break.

> (I.e. is there any platform FreeBSD runs on that have 32-bit longs and
> 64-bit pointers, or does all of them have pointers and long being the
> same size?)

Someone mentioned that i386's can have 64-bit longs (IP32L64).  I had
this booting and running most utilities, but it couldn't quite build
itself and I haven't run it for a year or two.

Bruce