From: "Steven Noonan" <steven@uplinklabs.net>
To: linux-kernel@vger.kernel.org
Cc: mingo@elte.hu, drzeus@drzeus.cx, "Steven Noonan" <steven@uplinklabs.net>
Subject: Re: [PATCH -tip] sdhci: 'scratch' may be used uninitialized
Date: Wed, 1 Oct 2008 01:33:17 -0700 [thread overview]
Message-ID: <f488382f0810010133j50f70705w59f207434a6b025e@mail.gmail.com> (raw)
In-Reply-To: <1222848842-10798-1-git-send-email-steven@uplinklabs.net>
On Wed, Oct 1, 2008 at 1:14 AM, Steven Noonan <steven@uplinklabs.net> wrote:
> - u32 scratch;
> + u32 uninitialized_var(scratch);
A bit of a further explanation:
The variable 'scratch' is always initialized before it's used. The
conditional which is responsible for initialization of 'scratch' will
always evaluate 'true' when the first loop iteration occurs, and thus,
it's properly initialized. GCC doesn't see this, of course, so using
the uninitialized_var() macro seems to work for silencing this case.
- Steven
next prev parent reply other threads:[~2008-10-01 8:33 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-10-01 7:57 [PATCH -tip] pcm_native: label out defined but not used Steven Noonan
2008-10-01 7:57 ` [PATCH -tip] sdhci: 'scratch' may be used uninitialized Steven Noonan
2008-10-01 7:57 ` [PATCH -tip] drivers/serial/8250.c: 'i' " Steven Noonan
2008-10-01 8:01 ` Ingo Molnar
2008-10-01 8:16 ` Steven Noonan
2008-10-01 8:29 ` Ingo Molnar
2008-10-01 8:36 ` Steven Noonan
2008-10-01 8:47 ` [PATCH] " Steven Noonan
2008-10-01 21:36 ` Alan Cox
2008-10-02 9:02 ` Ingo Molnar
2008-10-01 8:48 ` [PATCH -tip] " Ingo Molnar
2008-10-01 10:34 ` Alan Cox
2008-10-01 10:33 ` Alan Cox
2008-10-01 10:57 ` Ingo Molnar
2008-10-01 15:41 ` Alan Cox
2008-10-02 9:00 ` Ingo Molnar
2008-10-01 8:00 ` [PATCH -tip] sdhci: 'scratch' " Ingo Molnar
2008-10-01 8:14 ` Steven Noonan
2008-10-01 8:33 ` Steven Noonan [this message]
2008-10-01 8:35 ` Ingo Molnar
2008-10-01 8:50 ` [PATCH] " Steven Noonan
2008-10-04 19:57 ` Pierre Ossman
2008-10-05 14:28 ` Adrian Bunk
2008-10-05 22:53 ` Steven Noonan
2008-10-05 23:16 ` Adrian Bunk
2008-10-05 23:48 ` Steven Noonan
2008-10-06 5:59 ` Adrian Bunk
2008-10-06 6:30 ` Ingo Molnar
2008-10-06 7:27 ` Pierre Ossman
2008-10-06 8:25 ` Ingo Molnar
2008-10-01 7:59 ` [PATCH -tip] pcm_native: label out defined but not used Ingo Molnar
2008-10-01 8:12 ` Steven Noonan
2008-10-01 8:13 ` Takashi Iwai
2008-10-01 8:32 ` Ingo Molnar
2008-10-01 8:56 ` Takashi Iwai
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