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Date: Thu, 10 Nov 2005 04:28:57 -0800
From: Andrew Morton <akpm@osdl.org>
To: Adrian Bunk <bunk@stusta.de>
Cc: linux-kernel@vger.kernel.org
Subject: Re: [2.6 patch] add -Werror-implicit-function-declaration to CFLAGS
Message-Id: <20051110042857.38b4635b.akpm@osdl.org>
In-Reply-To: <20051107200336.GH3847@stusta.de>
References: <20051107200336.GH3847@stusta.de>
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Adrian Bunk <bunk@stusta.de> wrote:
>
> Currently, using an undeclared function gives a compile warning, but it 
>  can lead to a nasty runtime error if the prototype of the function is 
>  different from what gcc guessed.
> 
>  With -Werror-implicit-function-declaration, we are getting an immediate 
>  compile error instead.
> 
>  There will be some compile errors in cases where compilation previously
>  worked because the undefined function wasn't called due to gcc dead code
>  elimination, but in these cases a proper fix doesnt harm.
> 

Sorry, I need to build allmodconfig kernels on wacky architectures (eg
ppc64) and this patch is killing me.