From mboxrd@z Thu Jan  1 00:00:00 1970
From: Takashi Iwai <tiwai@suse.de>
Subject: Re: [PATCH] azt3328: repair breakage (Re: [PATCH 1/1]
	SOUND: azt3328, fix broken AZF_FMT_XLATE macro)
Date: Tue, 25 Jan 2011 10:40:30 +0100
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To: Jiri Slaby <jslaby@suse.cz>
Cc: alsa-devel@alsa-project.org, jirislaby@gmail.com, linux-kernel@vger.kernel.org, Andreas Mohr <andi@lisas.de>, Andy Whitcroft <apw@canonical.com>
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At Tue, 25 Jan 2011 09:23:41 +0100,
Jiri Slaby wrote:
> 
> On 01/25/2011 06:46 AM, Andreas Mohr wrote:
> > It is also quite interesting to note that this rather uncommon language syntax
> > (do...while(0) within switch scope) compiled cleanly without issue
> > (no warnings).
> 
> Note that the switch block is the same like the others and case and
> default and very similar to goto labels. You can even do:
> switch (x) {
> int abc;
> { case 5: abc = 7; break; }
> do { case 3: abc = 5; break; } while (0);
> while (1) {
>         printf("%d\n", abc);
> default:
>         abc = 1;
> }
> }
> And check what it will do for x == 3, 5, and others :).

Oh, don't let him bring to the dark side of C again :)


Takashi