From: Takashi Iwai <tiwai@suse.de>
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>
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 [thread overview]
Message-ID: <s5hoc75fhip.wl%tiwai@suse.de> (raw)
In-Reply-To: <4D3E888D.60909@suse.cz>
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
next prev parent reply other threads:[~2011-01-25 9:40 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-22 13:56 [PATCH 1/1] SOUND: azt3328, fix broken AZF_FMT_XLATE macro Jiri Slaby
2011-01-22 16:26 ` Takashi Iwai
2011-01-25 5:46 ` [PATCH] azt3328: repair breakage (Re: [PATCH 1/1] SOUND: azt3328, fix broken AZF_FMT_XLATE macro) Andreas Mohr
2011-01-25 7:13 ` Takashi Iwai
2011-01-25 8:23 ` Jiri Slaby
2011-01-25 9:40 ` Takashi Iwai [this message]
2011-01-22 20:01 ` [PATCH 1/1] SOUND: azt3328, fix broken AZF_FMT_XLATE macro Andreas Mohr
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