From: Alexandre Oliva <aoliva@redhat.com>
To: Ray Lee <ray-lk@madrabbit.org>
Cc: tomstdenis@yahoo.com, eger@havoc.gtf.org,
Linux Kernel <linux-kernel@vger.kernel.org>
Subject: Re: 0xdeadbeef vs 0xdeadbeefL
Date: 07 Jul 2004 02:55:01 -0300 [thread overview]
Message-ID: <orn02cqs3u.fsf@livre.redhat.lsd.ic.unicamp.br> (raw)
In-Reply-To: <1089165901.4373.175.camel@orca.madrabbit.org>
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. They could be
as narrow as 16 bits, in which case the constant will have type long
or unsigned long (because long must be at least 32 bits), or they
could be wider than 32 bits, in which case the constant will be signed
int instead of unsigned int. You might lose either way. It's
probably safer to make it explicitly UL, except perhaps in
machine-specific files where the width of types is well-known.
--
Alexandre Oliva http://www.ic.unicamp.br/~oliva/
Red Hat Compiler Engineer aoliva@{redhat.com, gcc.gnu.org}
Free Software Evangelist oliva@{lsd.ic.unicamp.br, gnu.org}
next prev parent reply other threads:[~2004-07-07 5:55 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-07-07 2:05 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 [this message]
2004-07-07 6:08 ` Ray Lee
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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