From mboxrd@z Thu Jan  1 00:00:00 1970
From: bugme-daemon@bugzilla.kernel.org
Subject: [Bug 11800] building SES support fails w/ gcc-3.4.5
Date: Wed, 22 Oct 2008 14:17:50 -0700 (PDT)
Message-ID: <20081022211750.B19C6108047@picon.linux-foundation.org>
References: <bug-11800-11613@http.bugzilla.kernel.org/>
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http://bugzilla.kernel.org/show_bug.cgi?id=11800





------- Comment #4 from anonymous@kernel-bugs.osdl.org  2008-10-22 14:17 -------
Reply-To: James.Bottomley@HansenPartnership.com

On Wed, 2008-10-22 at 13:30 -0700, Andrew Morton wrote:
> OK, it's here:
> 
> 	buf = kmalloc(vpd_len, GFP_KERNEL);
> 
> it's a gcc bug.
> 
> Please see if you can find some way to make it go away - perhaps change
> vpd_len's type to `int', things like that.
> 
> Or use a different compiler version :(

Could it be an optimisation issue?  The static oversize test relies on
the compiler optimising away a leg that can never be reached if the size
is under the max. If you do a make V=1 you'll see what optimisation
flags the compiler is using ... if it's -O2 then yes, the compiler
should be optimising stuff away and it's a clear compiler problem.  If
it's anything else, we might have a mis setting of the optimisation
level in the kernel build.

James


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