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From: Christopher Li <sparse@chrisli.org>
To: Ramsay Jones <ramsay@ramsay1.demon.co.uk>
Cc: Josh Triplett <josh@joshtriplett.org>,
	Sparse Mailing-list <linux-sparse@vger.kernel.org>
Subject: Re: [PATCH 2/5] Fix some "enum value 'SYM_...' not handled in switch" warnings
Date: Tue, 21 Jul 2009 17:29:51 -0700	[thread overview]
Message-ID: <70318cbf0907211729j51e48ca0p430d898a5cb86bc8@mail.gmail.com> (raw)
In-Reply-To: <4A663005.5090009@ramsay1.demon.co.uk>

On Tue, Jul 21, 2009 at 2:15 PM, Ramsay Jones<ramsay@ramsay1.demon.co.uk> wrote:

>> I don't think you want to add defaults like this just to avoid warnings.
>> Warnings like that can help when adding a new item to an enum, to find
>> the places where you need to extend the code to hand the new item.  And
>> since current GCC doesn't even issue the warning by default, it seems
>> even more unnecessary to add that default case.
>>
>
> OK...
>
> So, if I understand your argument, in order to make the best use of these
> warnings, then the correct change would look like the diff given below,
> and (for more up-to-date gcc) add -Wswitch-enum to CFLAGS (at least
> occasionally).

OK. I don't want to list all the enumerate value here just for the
sake of gcc warnings.
It makes the code ugly. Nor do I want to change the gcc flags used to compile
sparse. If the newest gcc still complain on those. I would rather add
the blank default
to make it clean. Since latest gcc doesn't issue warning on those. I
think it is fine to
leave it as it is.

Chris
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  reply	other threads:[~2009-07-22  0:29 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-07-18 20:41 [PATCH 2/5] Fix some "enum value 'SYM_...' not handled in switch" warnings Ramsay Jones
2009-07-19 14:01 ` Josh Triplett
2009-07-21 21:15   ` Ramsay Jones
2009-07-22  0:29     ` Christopher Li [this message]
2009-07-24 18:25       ` Ramsay Jones
2009-07-24 20:13         ` Christopher Li
2009-07-23  4:42     ` Josh Triplett

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