From: Jesper Juhl <juhl-lkml@dif.dk>
To: Timur Tabi <timur.tabi@ammasso.com>
Cc: linux-kernel <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] Remove pointless <0 comparison for unsigned variable in fs/fcntl.c
Date: Wed, 24 Nov 2004 00:19:44 +0100 (CET) [thread overview]
Message-ID: <Pine.LNX.4.61.0411240016350.3389@dragon.hygekrogen.localhost> (raw)
In-Reply-To: <41A3C1AE.5060604@ammasso.com>
On Tue, 23 Nov 2004, Timur Tabi wrote:
> Jesper Juhl wrote:
>
> > if pid_t is 16 bit, then the value can never be greater than 0xffff but, if
> > pid_t is greater than 16 bit, say 32 bit, then the argument "a" could very
> > well contain a value greater than 0xffff and then the comparison makes
> > perfect sense.
>
> If pid_t is 32-bit, then what's wrong with the value being greater than
> 0xFFFF? After all, if pid_t a 32-bit number, that implies that 32-bit values
> are acceptable.
>
My understanding of it is that it was just an example of how code that
generated warnings about limited range of datatype could actually be
perfectly fine.
--
Jesper Juhl
next prev parent reply other threads:[~2004-11-23 23:15 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-11-21 22:55 Jesper Juhl
2004-11-22 1:02 ` Matthew Wilcox
2004-11-23 9:42 ` Jesper Juhl
2004-11-23 10:42 ` Jamie Lokier
2004-11-23 18:28 ` Bryan Henderson
2004-11-23 18:03 ` Linus Torvalds
2004-11-23 18:39 ` Jesper Juhl
2004-11-23 18:37 ` Linus Torvalds
2004-11-23 19:20 ` linux-os
2004-11-23 23:16 ` Jesper Juhl
2004-11-23 19:13 ` Timur Tabi
2004-11-23 23:09 ` Jesper Juhl
2004-11-23 23:03 ` Timur Tabi
2004-11-23 23:19 ` Jesper Juhl [this message]
2004-11-23 23:09 ` Timur Tabi
2004-11-23 23:28 ` Jesper Juhl
2004-11-25 22:34 ` Valdis.Kletnieks
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