linux-kernel - Re: [PATCH net-next] net: core: Quiet W=1 warnings for unused vars and static functions

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Date:	Mon, 06 Oct 2014 18:19:40 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	joe@...ches.com
Cc:	netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	john.fastabend@...il.com
Subject: Re: [PATCH net-next] net: core: Quiet W=1 warnings for unused vars
 and static functions

From: Joe Perches <joe@...ches.com>
Date: Mon, 06 Oct 2014 15:04:24 -0700

> On Mon, 2014-10-06 at 17:56 -0400, David Miller wrote:
>> From: Joe Perches <joe@...ches.com>
>> Date: Mon, 06 Oct 2014 14:51:38 -0700
>> 
>> > Reduce noise when compiling W=1.
> []
>> BTW, this patch reminds me that if people think there are
>> subdirectories where we can turn on things like -Werror in the
>> networking I would be very happy to apply such patches.
> []
>> Things like net/core/ for example should be doable for sure.
> 
> I don't have any significant opposition to -Werror, but
> I think there are real arguments _against_ using -Werror.
> 
> I think the primary one is new compiler versions have a
> tendency to add new warnings for various things that can
> unnecessarily and unpredictably break the build.

My experience over at least a decade with arch/sparc doesn't match
your claims.
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