From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-help-return-21768-listarch-gcc-help=gcc.gnu.org@gcc.gnu.org>
Received: (qmail 26034 invoked by alias); 24 Oct 2005 10:33:24 -0000
Mailing-List: contact gcc-help-help@gcc.gnu.org; run by ezmlm
Precedence: bulk
List-Archive: <http://gcc.gnu.org/ml/gcc-help/>
List-Post: <mailto:gcc-help@gcc.gnu.org>
List-Help: <mailto:gcc-help-help@gcc.gnu.org>
Sender: gcc-help-owner@gcc.gnu.org
Received: (qmail 25944 invoked by uid 22791); 24 Oct 2005 10:33:19 -0000
Received: from iona.dcs.st-and.ac.uk (HELO iona.dcs.st-and.ac.uk) (138.251.206.55)
    by sourceware.org (qpsmtpd/0.30-dev) with ESMTP; Mon, 24 Oct 2005 10:33:19 +0000
Received: from [138.251.209.145] ([138.251.209.145])
	by iona.dcs.st-and.ac.uk (8.12.10/8.12.10) with ESMTP id j9OAXDi8007523;
	Mon, 24 Oct 2005 11:33:13 +0100
Message-ID: <435CB869.5060005@bubblescope.net>
Date: Mon, 24 Oct 2005 10:33:00 -0000
From: random@bubblescope.net
User-Agent: Mozilla Thunderbird 1.0.6 (Macintosh/20050716)
MIME-Version: 1.0
To: "Alex J. Dam" <alexjdam@gmail.com>
CC: GCC-Help <gcc-help@gcc.gnu.org>
Subject: Re: Moving to AMD64 bit and porting issues
References: <1129958772.5288.22.camel@lion> <20051024102542.GA3154@hymen>
In-Reply-To: <20051024102542.GA3154@hymen>
Content-Type: text/plain; charset=ISO-8859-1
Content-Transfer-Encoding: 7bit
X-SW-Source: 2005-10/txt/msg00151.txt.bz2

Alex J. Dam wrote:

>On Sat, Oct 22, 2005 at 01:26:12AM -0400, Ernest L. Williams Jr. wrote:
>  
>
>>Should we use "NULL" to represent a null pointer or "0" to represent a
>>null pointer?
>>    
>>
>
>AFAIK, according to C++, they are equivalent.  See, for example,
>
>http://www.research.att.com/~bs/bs_faq2.html#null
>  
>

This is true, they are equivalent. I would still advise using NULL
myself, as then g++ will produce some (I feel) helpful warnings, for
example 'NULL==1' or 'NULL + 1' will both produce "warning: NULL used in
arithmetic".

Chris