From: Jeff Garzik <jeff@garzik.org>
To: Linux Kernel <linux-kernel@vger.kernel.org>, Andi Kleen <ak@suse.de>
Cc: Andrew Morton <akpm@osdl.org>
Subject: x86 BUG bug
Date: Sun, 01 Oct 2006 07:42:15 -0400 [thread overview]
Message-ID: <451FA997.9050000@garzik.org> (raw)
I have a couple ATA drivers that spit out "foo might be used
uninitialized" warnings. Rather than the usual gcc nonsense, it turns
out that the code follows this pattern:
type_t foo;
if (condition 1)
foo = x;
else if (condition 2)
foo = y;
else
BUG();
It doesn't warn on other platforms, so I dug into the BUG() code on x86,
and discovered that it is missing the 'noreturn' attribute found in
other BUG() definitions.
Being rusty on the gcc asm syntax -- does an inline asm statement permit
'noreturn'? -- I figured it would be best just to report this, rather
than create a patch myself.
Jeff
next reply other threads:[~2006-10-01 11:42 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-10-01 11:42 Jeff Garzik [this message]
2006-10-01 11:56 ` x86 BUG bug Andi Kleen
2006-10-01 17:31 ` Jeremy Fitzhardinge
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