From: Willy Tarreau <w@1wt.eu>
To: Christoph Hellwig <hch@infradead.org>
Cc: Arnd Bergmann <arnd@kernel.org>,
"Martin K. Petersen" <martin.petersen@oracle.com>,
Arnd Bergmann <arnd@arndb.de>, Jens Axboe <axboe@kernel.dk>,
Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>,
Hannes Reinecke <hare@suse.de>,
Bodo Stroesser <bstroesser@ts.fujitsu.com>,
"Matthew Wilcox (Oracle)" <willy@infradead.org>,
Guoqing Jiang <guoqing.jiang@cloud.ionos.com>,
linux-scsi@vger.kernel.org, target-devel@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] target: pscsi: avoid Wempty-body warning
Date: Mon, 22 Mar 2021 16:53:44 +0100 [thread overview]
Message-ID: <20210322155344.GA23040@1wt.eu> (raw)
In-Reply-To: <20210322154735.GA2079192@infradead.org>
On Mon, Mar 22, 2021 at 03:47:35PM +0000, Christoph Hellwig wrote:
> On Mon, Mar 22, 2021 at 12:44:34PM +0100, Arnd Bergmann wrote:
> > From: Arnd Bergmann <arnd@arndb.de>
> >
> > Building with 'make W=1' shows a harmless warning for pscsi:
> >
> > drivers/target/target_core_pscsi.c: In function 'pscsi_complete_cmd':
> > drivers/target/target_core_pscsi.c:624:33: error: suggest braces around empty body in an 'if' statement [-Werror=empty-body]
> > 624 | ; /* XXX: TCM_LOGICAL_UNIT_COMMUNICATION_FAILURE */
> > | ^
> >
> > Rework the coding style as suggested by gcc to avoid the warning.
>
> I would much, much prefer to drop the bogus warning;
>
> if (foo)
> ; /* comment */
>
> is a fairly usual and absolutely sensible style. The warning on hte
> other hand is completely stupid.
Agreed!
These days it seems there is a competition for the stupidest warning
between compilers, and we've reached the point where working around
them manages to introduce real bugs :-(
I predict we'll soon see warning such as "this comment looks like valid
C code, if you really intended to comment it out, use #if 0 instead". Oh
well, let's hope I have not given a new idea here...
Willy
next prev parent reply other threads:[~2021-03-22 15:55 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-22 11:44 [PATCH] target: pscsi: avoid Wempty-body warning Arnd Bergmann
2021-03-22 15:47 ` Christoph Hellwig
2021-03-22 15:53 ` Willy Tarreau [this message]
2021-03-22 16:18 ` Arnd Bergmann
2021-03-22 16:26 ` Willy Tarreau
2021-03-22 16:34 ` Arnd Bergmann
2021-03-22 16:38 ` Willy Tarreau
2021-03-23 17:24 ` David Laight
2021-03-22 16:06 ` Matthew Wilcox
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