From: Zzy Wysm <zzy@zzywysm.com>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: alsa-devel@alsa-project.org, Randy Dunlap <rdunlap@infradead.org>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
"J. Bruce Fields" <bfields@fieldses.org>,
target-devel <target-devel@vger.kernel.org>,
Dave Jiang <dave.jiang@intel.com>,
linux-scsi <linux-scsi@vger.kernel.org>,
linux-nvdimm <linux-nvdimm@lists.01.org>,
Vishal Verma <vishal.l.verma@intel.com>,
Chuck Lever <chuck.lever@oracle.com>,
linux-input@vger.kernel.org,
Alexander Viro <viro@zeniv.linux.org.uk>,
Dan Williams <dan.j.williams@intel.com>,
Andrew Morton <akpm@linux-foundation.org>,
"open list:NFS, SUNRPC, AND..." <linux-nfs@vger.kernel.org>,
"Martin K. Petersen" <martin.petersen@oracle.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Dmitry Torokhov <dmitry.torokhov@gmail.com>,
Takashi Iwai <tiwai@suse.com>,
linux-usb@vger.kernel.org,
linux-fsdevel <linux-fsdevel@vger.kernel.org>,
Johannes Berg <johannes@sipsolutions.net>
Subject: Re: [PATCH 2/9] fix empty-body warning in posix_acl.c
Date: Mon, 20 Apr 2020 14:58:31 -0500 [thread overview]
Message-ID: <F8B969BE-A2B1-4E6D-8746-BBFBE6399328@zzywysm.com> (raw)
In-Reply-To: <CAHk-=wjSzuTyyBkmMDG4fx_sXzLJsh+9Xk-ubgbpJzJq_kzPsA@mail.gmail.com>
> On Apr 18, 2020, at 1:53 PM, Linus Torvalds <torvalds@linux-foundation.org> wrote:
>
> Thirdly, there's a *reason* why "-Wextra" isn't used.
>
> The warnings enabled by -Wextra are usually complete garbage, and
> trying to fix them often makes the code worse. Exactly like here.
>
As the instigator of this warning cleanup activity, even _I_ don’t recommend
building with all of -Wextra. Doing so on an allmodconfig build generates
500 megabytes of warning text (not exaggerating), primarily due to
-Wunused-parameter and Wmissing-field-initializers.
I strongly recommend disabling them with -Wno-unused-parameter
-Wno-missing-field-initializers since the spew is completely unactionable.
On the other hand, -Woverride-init found a legit bug that was breaking DVD
drives, fixed in commit 03264ddde2453f6877a7d637d84068079632a3c5.
I believe finding a good set of compiler warning settings can lead to lots of
good bugs being spotted and (hopefully) fixed. Why let syzbot do all the work?
zzy
next prev parent reply other threads:[~2020-04-21 6:07 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-18 18:41 [RFC PATCH 0/9] fix -Wempty-body build warnings Randy Dunlap
2020-04-18 18:41 ` [RFC PATCH 1/9] kernel.h: add do_empty() macro Randy Dunlap
2020-04-18 18:44 ` Joe Perches
2020-04-18 18:49 ` Randy Dunlap
2020-04-18 22:20 ` Bart Van Assche
2020-04-18 22:24 ` Randy Dunlap
2020-04-18 18:41 ` [PATCH 2/9] fs: fix empty-body warning in posix_acl.c Randy Dunlap
2020-04-18 18:53 ` Linus Torvalds
2020-04-18 18:55 ` Randy Dunlap
2020-04-20 19:58 ` Zzy Wysm [this message]
2020-04-18 18:41 ` [PATCH 3/9] input: fix empty-body warning in synaptics.c Randy Dunlap
2020-04-18 18:41 ` [PATCH 4/9] sound: fix empty-body warning in vx_core.c Randy Dunlap
2020-04-18 18:41 ` [PATCH 5/9] usb: fix empty-body warning in sysfs.c Randy Dunlap
2020-04-18 18:44 ` Matthew Wilcox
2020-04-18 18:46 ` Randy Dunlap
2020-04-18 19:54 ` Alan Stern
2020-04-21 1:20 ` NeilBrown
2020-04-21 13:58 ` Alan Stern
2020-04-18 18:41 ` [PATCH 6/9] nfsd: fix empty-body warning in nfs4state.c Randy Dunlap
2020-04-18 18:45 ` Chuck Lever
2020-04-18 18:53 ` Joe Perches
2020-04-18 18:57 ` Randy Dunlap
2020-04-18 22:28 ` Trond Myklebust
2020-04-18 22:32 ` Randy Dunlap
2020-04-18 22:33 ` Chuck Lever
2020-04-19 9:32 ` Sergei Shtylyov
2020-04-18 18:41 ` [PATCH 7/9] drivers/base: fix empty-body warnings in devcoredump.c Randy Dunlap
2020-04-18 18:50 ` Matthew Wilcox
2020-04-18 18:53 ` Randy Dunlap
2020-04-18 18:55 ` Joe Perches
2020-04-18 19:13 ` Matthew Wilcox
2020-04-18 19:16 ` Johannes Berg
2020-04-18 19:15 ` Linus Torvalds
2020-04-19 12:03 ` Greg Kroah-Hartman
2020-04-19 6:02 ` Greg Kroah-Hartman
2020-04-19 6:04 ` Greg Kroah-Hartman
2020-04-18 18:41 ` [PATCH 8/9] dax: fix empty-body warnings in bus.c Randy Dunlap
2020-04-19 8:15 ` Christoph Hellwig
2020-04-18 18:41 ` [PATCH 9/9] target: fix empty-body warning in target_core_pscsi.c Randy Dunlap
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