From: Martin Zwickel <martin.zwickel@technotrend.de>
To: Michael Buesch <mbuesch@freenet.de>
Cc: root@chaos.analogic.com, Herbert Xu <herbert@gondor.apana.org.au>,
Chris Wright <chrisw@osdl.org>,
akpm@osdl.org, torvalds@osdl.org, linux-kernel@vger.kernel.org,
sds@epoch.ncsc.mil, jmorris@redhat.com, mika@osdl.org
Subject: Re: [PATCH] Use NULL instead of integer 0 in security/selinux/
Date: Thu, 8 Jul 2004 13:44:59 +0200 [thread overview]
Message-ID: <20040708134459.6970a20b@phoebee> (raw)
In-Reply-To: <200407081328.40545.mbuesch@freenet.de>
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On Thu, 8 Jul 2004 13:28:38 +0200
Michael Buesch <mbuesch@freenet.de> bubbled:
> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
> Quoting "Richard B. Johnson" <root@chaos.analogic.com>:
> > Because NULL is a valid pointer value. 0 is not. If you were
> > to make 0 valid, you would use "(void *)0", which is what
> > NULL just happens to be in all known architectures so far,
> > although that could change in an alternate universe.
>
> No, that is not true.
> In C/C++ this is true:
> NULL == 0
hmm...
include/linux/stddef.h:
#undef NULL
#if defined(__cplusplus)
#define NULL 0
#else
#define NULL ((void *)0)
#endif
--
MyExcuse:
fractal radiation jamming the backbone
Martin Zwickel <martin.zwickel@technotrend.de>
Research & Development
TechnoTrend AG <http://www.technotrend.de>
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next prev parent reply other threads:[~2004-07-08 11:45 UTC|newest]
Thread overview: 75+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-07-07 19:25 [PATCH] Use NULL instead of integer 0 in security/selinux/ Chris Wright
2004-07-08 3:12 ` Herbert Xu
2004-07-08 3:27 ` David S. Miller
2004-07-08 3:43 ` Miles Bader
2004-07-08 5:22 ` Linus Torvalds
2004-07-08 5:35 ` Miles Bader
2004-07-08 15:58 ` Linus Torvalds
2004-07-08 16:23 ` Dave Jones
2004-07-08 17:57 ` Geert Uytterhoeven
2004-07-09 11:23 ` Roman Zippel
2004-07-10 19:41 ` Geert Uytterhoeven
2004-07-11 10:29 ` Geert Uytterhoeven
2004-07-11 10:54 ` viro
2004-07-11 16:14 ` Linus Torvalds
2004-07-11 20:05 ` H. Peter Anvin
2004-07-12 15:58 ` Florian Weimer
2004-07-12 16:34 ` H. Peter Anvin
2004-07-08 11:18 ` Herbert Xu
2004-07-08 13:10 ` Andreas Schwab
2004-07-08 13:56 ` Herbert Xu
2004-07-08 14:13 ` Andreas Schwab
2004-07-08 5:19 ` Linus Torvalds
2004-07-08 16:09 ` Timothy Miller
2004-07-08 16:21 ` Linus Torvalds
2004-07-08 16:27 ` Linus Torvalds
2004-07-08 16:52 ` Timothy Miller
[not found] ` <200407090056.51084.vda@port.imtp.ilyichevsk.odessa.ua>
2004-07-12 15:17 ` Timothy Miller
2004-07-12 16:12 ` Andreas Schwab
2004-07-12 16:51 ` Andrew Pimlott
2004-07-15 16:15 ` Timothy Miller
2004-07-09 20:36 ` Eric W. Biederman
2004-07-09 23:49 ` Paul Jackson
2004-07-10 1:43 ` Kyle Moffett
2004-07-10 1:47 ` Herbert Xu
2004-07-10 21:53 ` Alexandre Oliva
2004-07-10 6:18 ` Linus Torvalds
2004-07-10 6:23 ` Linus Torvalds
2004-07-10 6:58 ` Andrea Arcangeli
2004-07-10 9:48 ` Eric W. Biederman
2004-07-10 15:39 ` Roland Dreier
2004-07-11 2:45 ` Eyal Lebedinsky
2004-07-11 21:19 ` Olaf Titz
2004-07-10 9:39 ` Eric W. Biederman
2004-07-10 9:56 ` Herbert Xu
2004-07-11 21:47 ` Olaf Titz
2004-07-13 8:43 ` Geert Uytterhoeven
2004-07-14 3:12 ` Alexandre Oliva
2004-07-13 18:53 ` Elladan
2004-07-14 3:15 ` Alexandre Oliva
2004-07-10 12:11 ` Roman Zippel
2004-07-10 21:59 ` Alexandre Oliva
2004-07-11 4:40 ` Linus Torvalds
2004-07-10 9:31 ` Eyal Lebedinsky
2004-07-10 22:07 ` Alexandre Oliva
2004-07-10 23:52 ` Paul Jackson
2004-07-11 0:12 ` Tim Wright
2004-07-12 22:03 ` Bill Davidsen
2004-07-10 8:18 ` Florian Weimer
2004-07-08 11:10 ` Richard B. Johnson
2004-07-08 11:28 ` Michael Buesch
2004-07-08 11:44 ` Martin Zwickel [this message]
2004-07-08 12:06 ` Michael Buesch
2004-07-08 12:38 ` [OT] NULL versus 0 (Re: [PATCH] Use NULL instead of integer 0 in security/selinux/) Kari Hurtta
2004-07-08 12:42 ` Michael Buesch
2004-07-08 12:57 ` Kari Hurtta
2004-07-08 15:25 ` Herbert Xu
2004-07-10 8:22 ` [PATCH] Use NULL instead of integer 0 in security/selinux/ Florian Weimer
2004-07-08 11:43 ` P. Benie
2004-07-08 14:32 ` Richard B. Johnson
2004-07-08 15:00 ` Michael Poole
2004-07-08 15:30 ` P. Benie
2004-07-08 15:55 ` Andreas Schwab
2004-07-10 7:09 ` Andrea Arcangeli
2004-07-10 7:02 ` Andrea Arcangeli
2004-07-10 6:59 ` Andrea Arcangeli
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