linux-kernel - Re: [PATCH v2 03/10] compiler-gcc{3,4}.h: Use GCC

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Message-ID: <20121006231041.GB3278@liondog.tnic>
Date:	Sun, 7 Oct 2012 01:10:41 +0200
From:	Borislav Petkov <bp@...en8.de>
To:	danielfsantos@....net
Cc:	LKML <linux-kernel@...r.kernel.org>,
	Andi Kleen <ak@...ux.intel.com>,
	Andrea Arcangeli <aarcange@...hat.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Christopher Li <sparse@...isli.org>,
	David Daney <david.daney@...ium.com>,
	David Howells <dhowells@...hat.com>,
	David Rientjes <rientjes@...gle.com>,
	Joe Perches <joe@...ches.com>,
	Konstantin Khlebnikov <khlebnikov@...nvz.org>,
	linux-sparse@...r.kernel.org,
	Michel Lespinasse <walken@...gle.com>,
	Paul Gortmaker <paul.gortmaker@...driver.com>,
	Pavel Pisa <pisa@....felk.cvut.cz>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Steven Rostedt <rostedt@...dmis.org>,
	Daniel Santos <daniel.santos@...ox.com>
Subject: Re: [PATCH v2 03/10] compiler-gcc{3,4}.h: Use GCC_VERSION macro

On Fri, Oct 05, 2012 at 02:42:42PM -0500, danielfsantos@....net wrote:
> Using GCC_VERSION reduces complexity, is easier to read and is GCC's
> recommended mechanism for doing version checks. (Just don't ask me why
> they didn't define it in the first place.)  This also makes it easy to
> merge compiler-gcc{,3,4}.h should somebody want to.
> 
> Signed-off-by: Daniel Santos <daniel.santos@...ox.com>
> Acked-by: David Rientjes <rientjes@...gle.com>
> ---

[ … ]

> diff --git a/include/linux/compiler-gcc4.h b/include/linux/compiler-gcc4.h
> index 4506d65..bbfeb13 100644
> --- a/include/linux/compiler-gcc4.h
> +++ b/include/linux/compiler-gcc4.h
> @@ -4,7 +4,7 @@
>  
>  /* GCC 4.1.[01] miscompiles __weak */
>  #ifdef __KERNEL__
> -# if __GNUC_MINOR__ == 1 && __GNUC_PATCHLEVEL__ <= 1
> +# if GCC_VERSION >= 40100 &&  GCC_VERSION <= 40101
>  //#  error Your version of gcc miscompiles the __weak directive

Did I miss something again? This "error" preprocessor function is
commented out here? Why?

-- 
Regards/Gruss,
    Boris.
--
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