From: Jakub Jelinek <jakub@redhat.com>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Venki Pallipadi <venkatesh.pallipadi@intel.com>,
torvalds@linux-foundation.org, bunk@kernel.org,
davem@davemloft.net, trini@kernel.crashing.org, mingo@elte.hu,
tglx@linutronix.de, hpa@zytor.com, linux-kernel@vger.kernel.org,
suresh.b.siddha@intel.com
Subject: Re: huge gcc 4.1.{0,1} __weak problem
Date: Thu, 1 May 2008 18:49:56 -0400 [thread overview]
Message-ID: <20080501224956.GM2255@devserv.devel.redhat.com> (raw)
In-Reply-To: <20080501154238.eccdb6ff.akpm@linux-foundation.org>
On Thu, May 01, 2008 at 03:42:38PM -0700, Andrew Morton wrote:
> Is there some vaguely maintainable workaround we can do? If the problem
> only affects completely-empty weak functions then we could put something in
> them to make them non-empty?
for (;;); isn't enough, the function would be still considered const and by
4.1.0 and some 4.1.1 incorrectly optimized out, without regard to weak
attribute.
But e.g.
asm ("");
should be enough.
Jakub
next prev parent reply other threads:[~2008-05-01 22:51 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-04-30 1:31 [PATCH] /dev/mem gcc weak function workaround Venki Pallipadi
2008-04-30 4:28 ` David Miller
2008-04-30 12:49 ` Pallipadi, Venkatesh
2008-04-30 20:15 ` Tom Rini
2008-05-01 21:56 ` huge gcc 4.1.{0,1} __weak problem Adrian Bunk
2008-05-01 22:20 ` Andrew Morton
2008-05-01 22:27 ` Linus Torvalds
2008-05-01 22:33 ` Andrew Morton
2008-05-01 23:24 ` Tom Rini
2008-05-01 23:59 ` Andrew Morton
2008-05-02 0:21 ` Justin Mattock
2008-05-02 7:18 ` Vegard Nossum
2008-05-02 13:43 ` Theodore Tso
2008-05-02 8:10 ` Adrian Bunk
2008-05-02 9:09 ` Andi Kleen
2008-05-01 22:35 ` Venki Pallipadi
2008-05-01 22:42 ` Andrew Morton
2008-05-01 22:49 ` Jakub Jelinek [this message]
2008-05-01 23:21 ` Tom Rini
2008-05-01 23:30 ` Venki Pallipadi
2008-05-02 0:34 ` Linus Torvalds
2008-05-02 0:39 ` Suresh Siddha
2008-05-02 21:11 ` Jeremy Fitzhardinge
2008-05-02 22:02 ` David Miller
2008-05-01 23:23 ` Tom Rini
2008-05-01 22:51 ` David Miller
2008-06-26 10:37 ` [2.6.26 patch] #error for gcc 4.1.{0,1} Adrian Bunk
2008-05-02 21:09 ` huge gcc 4.1.{0,1} __weak problem Jeremy Fitzhardinge
2008-05-02 21:19 ` Adrian Bunk
-- strict thread matches above, loose matches on Subject: below --
2008-05-01 23:55 Chris Knadle
2008-05-02 9:19 ` Miquel van Smoorenburg
2008-05-02 9:55 ` Alistair John Strachan
2008-05-02 10:43 ` Sam Ravnborg
2008-05-02 11:48 ` Alistair John Strachan
2008-05-02 13:57 ` Sam Ravnborg
2008-05-02 14:11 ` Jakub Jelinek
2008-05-02 15:26 ` Alistair John Strachan
2008-05-02 14:57 ` Jeremy Fitzhardinge
2008-05-02 12:40 ` Sven-Haegar Koch
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