linux-kernel - Re: [PATCH] CodingStyle: proscribe do-while without braces.

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Message-Id: <1185555916.2642.8.camel@josh-work.beaverton.ibm.com>
Date:	Fri, 27 Jul 2007 10:05:16 -0700
From:	Josh Triplett <josht@...ux.vnet.ibm.com>
To:	Krzysztof Halasa <khc@...waw.pl>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	linux-sparse@...r.kernel.org
Subject: Re: [PATCH] CodingStyle: proscribe do-while without braces.

On Fri, 2007-07-27 at 18:00 +0200, Krzysztof Halasa wrote:
> Andrew Morton <akpm@...ux-foundation.org> writes:
> 
> > it's better that we all do things the same way.  What that way _is_ is
> > actually less important, unless it's something stupid, of course.
> 
> It's certainly true WRT things like indentation but IMHO it shouldn't
> go that far, and if it goes, it should be non-braced version.
> 
> If we prefer non-braced versions of "if" and "while", it would be
> a bit strange to require braces with "do while", wouldn't it?

Perhaps, but
     1. Existing kernel style uses braces with single-statement
        do-while.
     2. Linus prefers (or at least preferred in October of 2006) braces
        with single-statement do-while.

> Sparse warnings... I think it shouldn't complain either, unless
> called with extra parameter.

Good point; Sparse shouldn't warn about this by default.  I've turned
that off in latest Sparse from Git, so you need to give -Wdo-while or
-Wall to get warnings about that.  However, the kernel gives -Wall, so
you'll still see the warnings there.

- Josh Triplett


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