From: James Bottomley <James.Bottomley@SteelEye.com>
To: Jesper Juhl <jesper.juhl@gmail.com>
Cc: linux-kernel@vger.kernel.org, Eric Youngdale <ericy@cais.com>,
Eric Youngdale <eric@andante.org>,
linux-scsi@vger.kernel.org
Subject: Re: [PATCH] silence gcc warning about possibly uninitialized use of variable in scsi_scan
Date: Sun, 26 Feb 2006 12:21:24 -0600 [thread overview]
Message-ID: <1140978084.3692.6.camel@mulgrave.il.steeleye.com> (raw)
In-Reply-To: <200602261639.15657.jesper.juhl@gmail.com>
On Sun, 2006-02-26 at 16:39 +0100, Jesper Juhl wrote:
> Gcc can't see that 'result' will always be initialized inside the for loop
> and thus it warns
> drivers/scsi/scsi_scan.c:445: warning: 'result' might be used uninitialized in this function
> This patch silences the warning by initializing 'result' to zero.
Really, this is a gcc bug. My version of the compiler:
gcc version 4.0.3 20051201 (prerelease) (Debian 4.0.2-5)
Doesn't give this warning. And, since the loop has fixed parameters,
gcc should see not only that it's always executed, but that it could be
unrolled.
Which version is causing the problem?
James
next parent reply other threads:[~2006-02-26 18:21 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <200602261639.15657.jesper.juhl@gmail.com>
2006-02-26 18:21 ` James Bottomley [this message]
2006-02-26 18:23 ` Jesper Juhl
2006-02-26 18:59 ` James Bottomley
2006-02-26 19:01 ` Jesper Juhl
2006-02-26 19:21 ` James Bottomley
2006-02-26 20:41 ` Jesper Juhl
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