From: Ray Lee <ray-lk@madrabbit.org>
To: Alexandre Oliva <aoliva@redhat.com>
Cc: tomstdenis@yahoo.com, eger@havoc.gtf.org,
Linux Kernel <linux-kernel@vger.kernel.org>
Subject: Re: 0xdeadbeef vs 0xdeadbeefL
Date: Tue, 06 Jul 2004 23:08:40 -0700 [thread overview]
Message-ID: <1089180520.4373.181.camel@orca.madrabbit.org> (raw)
In-Reply-To: <orn02cqs3u.fsf@livre.redhat.lsd.ic.unicamp.br>
On Tue, 2004-07-06 at 22:55, Alexandre Oliva wrote:
> On Jul 6, 2004, Ray Lee <ray-lk@madrabbit.org> wrote:
>
> > Which means 0xdeadbeef is a perfectly valid literal for an unsigned int.
>
> Assuming ints are 32-bits wide. They don't have to be.
In which case the rest of that line that read:
it has the first possible of these types ["in which its value
can be represented" -- from omitted]: int, unsigned int, long
int, unsigned long int.
...kicks in.
> or they could be wider than 32 bits, in which case the constant will
> be signed int instead of unsigned int.
Read that line again. This would only happen if the platform has no
unsigned 32 bit integer whatsoever. If you can point out one of those to
me that Linux runs on, then I'll concede the point. On any other
platform, the constant oct/hex int promotion rules will walk it up to a
32-bit unsigned before it hits the larger types.
Ray
next prev parent reply other threads:[~2004-07-07 6:08 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-07-07 2:05 0xdeadbeef vs 0xdeadbeefL Ray Lee
2004-07-07 3:02 ` viro
2004-07-07 5:58 ` Alexandre Oliva
2004-07-07 6:12 ` Ray Lee
2004-07-07 5:55 ` Alexandre Oliva
2004-07-07 6:08 ` Ray Lee [this message]
2004-07-07 6:48 ` viro
2004-07-07 17:58 ` Alexandre Oliva
2004-07-12 17:31 ` H. Peter Anvin
2004-07-07 7:30 ` Tomas Szepe
2004-07-07 14:34 ` Jan-Benedict Glaw
2004-07-12 17:50 ` H. Peter Anvin
-- strict thread matches above, loose matches on Subject: below --
2004-07-06 21:56 David Eger
2004-07-07 0:06 ` tom st denis
2004-07-07 3:00 ` viro
2004-07-07 11:10 ` tom st denis
2004-07-07 14:22 ` viro
2004-07-07 18:47 ` tom st denis
2004-07-07 16:30 ` Gabriel Paubert
2004-07-07 18:41 ` tom st denis
2004-07-07 18:47 ` Christoph Hellwig
2004-07-07 18:53 ` tom st denis
2004-07-07 23:17 ` Harald Arnesen
2004-07-08 6:15 ` David Weinehall
2004-07-08 17:16 ` Horst von Brand
2004-07-10 1:52 ` Andrew Rodland
2004-07-07 0:38 ` Richard B. Johnson
2004-07-07 4:52 ` David Eger
2004-07-07 11:40 ` Richard B. Johnson
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