From: Richard Henderson <rth@twiddle.net>
To: Linus Torvalds <torvalds@transmeta.com>
Cc: "Richard B. Johnson" <root@chaos.analogic.com>,
Martin Schwidefsky <schwidefsky@de.ibm.com>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] s390 (7/13): gcc 3.3 adaptions.
Date: Fri, 28 Feb 2003 19:12:53 -0800 [thread overview]
Message-ID: <20030228191253.B26656@twiddle.net> (raw)
In-Reply-To: <Pine.LNX.4.44.0302241259320.13406-100000@penguin.transmeta.com>; from torvalds@transmeta.com on Mon, Feb 24, 2003 at 01:02:39PM -0800
On Mon, Feb 24, 2003 at 01:02:39PM -0800, Linus Torvalds wrote:
> Does gcc still warn about things like
>
> #define COUNT (sizeof(array)/sizeof(element))
>
> int i;
> for (i = 0; i < COUNT; i++)
> ...
>
> where COUNT is obviously unsigned (because sizeof is size_t and thus
> unsigned)?
Yes. We don't do complete value-range propagation to figure
out if a warning is needed. We only look at the comparison
itself and note that one of the arguments changed signedness
due to forced promotions.
r~
next prev parent reply other threads:[~2003-03-01 3:02 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-02-24 18:10 [PATCH] s390 (7/13): gcc 3.3 adaptions Martin Schwidefsky
2003-02-24 19:44 ` Richard B. Johnson
2003-02-24 21:02 ` Linus Torvalds
2003-02-24 21:27 ` Jeff Garzik
2003-02-24 21:33 ` Richard B. Johnson
2003-02-24 21:35 ` Andreas Schwab
2003-02-24 21:53 ` Jeff Garzik
2003-02-24 22:07 ` Andreas Schwab
2003-02-24 22:21 ` Jörn Engel
2003-02-24 22:31 ` Jörn Engel
2003-02-25 12:34 ` Andreas Schwab
2003-02-24 22:39 ` Linus Torvalds
2003-02-25 0:20 ` Alan Cox
2003-02-24 23:20 ` Linus Torvalds
2003-02-25 0:40 ` Alan Cox
2003-02-24 23:51 ` Linus Torvalds
2003-02-25 5:24 ` Chris Wedgwood
2003-02-25 12:25 ` Jamie Lokier
2003-02-25 12:40 ` Andreas Schwab
2003-02-25 15:27 ` Linus Torvalds
2003-02-25 15:39 ` Andreas Schwab
2003-02-25 16:02 ` Linus Torvalds
2003-02-25 16:15 ` Linus Torvalds
2003-02-25 16:26 ` Andreas Schwab
2003-02-25 16:17 ` Richard B. Johnson
2003-02-24 22:28 ` Linus Torvalds
2003-02-24 22:39 ` Jakub Jelinek
2003-02-24 23:52 ` John Alvord
2003-02-24 21:38 ` Adrian Bunk
2003-03-01 3:12 ` Richard Henderson [this message]
[not found] <20030224195008$59ef@gated-at.bofh.it>
[not found] ` <20030224195008$40bd@gated-at.bofh.it>
2003-02-24 20:03 ` Arnd Bergmann
2003-02-24 20:49 ` Richard B. Johnson
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