From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <gcc-help-return-17664-listarch-gcc-help=gcc.gnu.org@gcc.gnu.org>
Received: (qmail 12218 invoked by alias); 24 Aug 2004 10:47:49 -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 12194 invoked from network); 24 Aug 2004 10:47:45 -0000
Received: from unknown (HELO psmtp.com) (12.158.35.214)
  by sourceware.org with SMTP; 24 Aug 2004 10:47:45 -0000
Received: from source ([192.150.22.7]) by exprod6ob4.obsmtp.com ([12.158.35.250]) with SMTP;
	Tue, 24 Aug 2004 03:47:44 PDT
Received: from inner-relay-1.corp.adobe.com (inner-relay-1 [153.32.1.51])
	by smtp-relay-7.sea.adobe.com (8.12.10/8.12.10) with ESMTP id i7OAlite019930
	for <gcc-help@gcc.gnu.org>; Tue, 24 Aug 2004 03:47:44 -0700 (PDT)
Received: from iplan-mn (iplan-mn.corp.adobe.com [130.248.25.5])
	by inner-relay-1.corp.adobe.com (8.12.9/8.12.9) with ESMTP id i7OAliTk013551
	for <gcc-help@gcc.gnu.org>; Tue, 24 Aug 2004 03:47:44 -0700 (PDT)
Received: from mn-eljay-a51m.adobe.com ([130.248.178.96])
 by iplan-mn.corp.adobe.com
 (iPlanet Messaging Server 5.2 HotFix 1.21 (built Sep  8 2003))
 with ESMTP id <0I2Y005LY5ZIH4@iplan-mn.corp.adobe.com> for
 gcc-help@gcc.gnu.org; Tue, 24 Aug 2004 05:47:43 -0500 (CDT)
Date: Tue, 24 Aug 2004 16:27:00 -0000
From: Eljay Love-Jensen <eljay@adobe.com>
Subject: g++ and null pointers
X-Sender: eljay@iplan-mn.corp.adobe.com
To: gcc-help@gcc.gnu.org
Message-id: <6.1.2.0.2.20040824053102.01e9b890@iplan-mn.corp.adobe.com>
MIME-version: 1.0
Content-type: text/plain; charset=us-ascii; format=flowed
Content-transfer-encoding: 7BIT
X-SW-Source: 2004-08/txt/msg00220.txt.bz2

Hi everyone,

GCC 3.3.1 on Cygwin

When I compile this test.cpp source...

// g++ -Wno-long-long -pedantic -Wall -W -c test.cpp
#define NULL __null
int main()
{
     void* p;
     p = 0;
     p = 0u;
     p = 0ul;
     p = 0ull;
     p = 0l;
     p = 0ll;
     p = false;
     // silly...
     p = -0;
     p = -0u;
     p = -0ul;
     p = -0ull;
     p = -0l;
     p = -0ll;
     p = -false;
     // my druthers...
     p = NULL;
     return 0;
}

...GCC is happy with all of these assignments.

Are they all supposed (ISO 14882) to be legit?  Some of them surprised me.

The negated ones are just for fun.  I didn't go completely crazy with the 
cheese whiz, and put in "!!0" and "+0" and hexadecimal, and octal, and 
various permutations of the [uUlL]* suffix.

Sincerely,
--Eljay