From: Al Viro <viro@ftp.linux.org.uk>
To: Andrew Morton <akpm@osdl.org>
Cc: davem@davemloft.net, dwalker@mvista.com,
alan@lxorguk.ukuu.org.uk, linux-kernel@vger.kernel.org
Subject: Re: [PATCH -mm] sys_semctl gcc 4.1 warning fix
Date: Thu, 11 May 2006 00:20:42 +0100 [thread overview]
Message-ID: <20060510232042.GJ27946@ftp.linux.org.uk> (raw)
In-Reply-To: <20060510160548.36e92daf.akpm@osdl.org>
On Wed, May 10, 2006 at 04:05:48PM -0700, Andrew Morton wrote:
> Sure - it's sad and we need some workaround.
>
> The init_self() thingy seemed reasonable to me - it shuts up the warning
> and has no runtime cost. What we could perhaps do is to make
>
> #define init_self(x) (x = x)
>
> only if the problematic gcc versions are detected. Later, if/when gcc gets
> fixed up, we use
Sorry, no - it shuts up too much. Look, there are two kinds of warnings
here. "May be used" and "is used". This stuff shuts both. And unlike
"may be used", "is used" has fairly high S/N ratio.
Moreover, once you do that, you lose all future "is used" warnings on
that variable. So your ability to catch future bugs is decreased, not
increased.
next prev parent reply other threads:[~2006-05-10 23:20 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-05-10 2:56 [PATCH -mm] sys_semctl gcc 4.1 warning fix Daniel Walker
2006-05-10 10:34 ` Alan Cox
2006-05-10 14:31 ` Daniel Walker
2006-05-10 15:09 ` Alan Cox
2006-05-10 15:06 ` Daniel Walker
2006-05-10 15:24 ` Steven Rostedt
2006-05-10 16:24 ` Adrian Bunk
2006-05-10 17:18 ` Steven Rostedt
2006-05-10 17:45 ` Steven Rostedt
2006-05-10 18:27 ` Stephen Hemminger
2006-05-10 19:07 ` Serge Belyshev
2006-05-10 20:24 ` Adrian Bunk
2006-05-10 20:35 ` Steven Rostedt
2006-05-10 20:36 ` Adrian Bunk
2006-05-10 20:53 ` Steven Rostedt
2006-05-10 19:20 ` Steven Rostedt
2006-05-10 19:49 ` Daniel Walker
2006-05-10 20:44 ` Steven Rostedt
2006-05-10 21:11 ` Daniel Walker
2006-05-10 21:20 ` Al Viro
2006-05-10 21:33 ` Daniel Walker
2006-05-10 21:39 ` Al Viro
2006-05-10 21:45 ` Daniel Walker
2006-05-10 21:48 ` Al Viro
2006-05-11 6:36 ` Steven Rostedt
2006-05-10 15:39 ` Alan Cox
2006-05-10 15:38 ` Daniel Walker
2006-05-10 16:21 ` Al Viro
2006-05-10 16:37 ` Daniel Walker
2006-05-10 16:42 ` Al Viro
2006-05-10 17:25 ` Daniel Walker
2006-05-10 19:55 ` Alistair John Strachan
2006-05-10 22:03 ` Andrew Morton
2006-05-10 22:10 ` Al Viro
2006-05-10 22:31 ` David S. Miller
2006-05-10 22:45 ` Al Viro
2006-05-10 23:05 ` Andrew Morton
2006-05-10 23:20 ` Al Viro [this message]
2006-05-10 23:45 ` Andrew Morton
2006-05-11 1:28 ` Al Viro
2006-05-11 8:11 ` Steven Rostedt
2006-05-11 10:07 ` [PATCH -mm] introduce a false positive macro Steven Rostedt
2006-05-11 20:40 ` [PATCH -mm] sys_semctl gcc 4.1 warning fix Adrian Bunk
2006-05-11 21:14 ` Al Viro
2006-05-10 23:06 ` Roland Dreier
2006-05-10 22:30 ` David S. Miller
2006-05-11 2:58 ` Mike Galbraith
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20060510232042.GJ27946@ftp.linux.org.uk \
--to=viro@ftp.linux.org.uk \
--cc=akpm@osdl.org \
--cc=alan@lxorguk.ukuu.org.uk \
--cc=davem@davemloft.net \
--cc=dwalker@mvista.com \
--cc=linux-kernel@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox