linux-kernel - Re: [PATCH] fix extern inline errors with gcc 4.3.0

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Message-ID: <20080630164324.GA1536@cs181140183.pp.htv.fi>
Date:	Mon, 30 Jun 2008 19:43:24 +0300
From:	Adrian Bunk <bunk@...nel.org>
To:	Jeff Dike <jdike@...toit.com>
Cc:	Benny Halevy <bhalevy@...asas.com>,
	user-mode-linux-devel@...ts.sourceforge.net,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] fix extern inline errors with gcc 4.3.0

On Mon, Jun 30, 2008 at 12:22:01PM -0400, Jeff Dike wrote:
> On Sun, Jun 29, 2008 at 10:32:43AM +0300, Benny Halevy wrote:
> > Note that the crash happened with gcc 4.1.2 and it will get the
> > -fno-unit-at-a-time flag with the proposed patch.
> > 
> > That said, this option or the lack of it ought not to cause any
> > runtime crashes.  If it does, I'd feel much more comfortable to know
> > exactly what the root cause is before deciding to use the flag to
> > workaround^hide it.
> 
> I agree.
> 
> The constraints on [no-]unit-at-a-time that I see are:
>...
> 	x86_64 uses unit-at-a-time always
>...

The only gcc versions that ever supported unit-at-a-time without 
enabling it by default was some patched gcc 3.3 that included a
backport of unit-at-a-time to gcc 3.3.

Just as a note that I doubt this matters in practice today.

> 				Jeff

cu
Adrian

-- 

       "Is there not promise of rain?" Ling Tan asked suddenly out
        of the darkness. There had been need of rain for many days.
       "Only a promise," Lao Er said.
                                       Pearl S. Buck - Dragon Seed

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