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From: Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>
To: Finn Thain <fthain@telegraphics.com.au>
Cc: Kees Cook <keescook@chromium.org>,
	James Bottomley <James.Bottomley@hansenpartnership.com>,
	"Gustavo A. R. Silva" <gustavoars@kernel.org>,
	Joe Perches <joe@perches.com>, Jakub Kicinski <kuba@kernel.org>,
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	Jonathan Cameron <Jonathan.Cameron@huawei.com>,
	Greg KH <gregkh@linuxfoundation.org>
Subject: Re: [Intel-wired-lan] [PATCH 000/141] Fix fall-through warnings for Clang
Date: Wed, 25 Nov 2020 00:15:54 +0100
Message-ID: <CANiq72nUt57u5DG9rH=DB0DzQH7U6-QbG-2Ou+PyCY=p=_Ggag@mail.gmail.com> (raw)
In-Reply-To: <alpine.LNX.2.23.453.2011250859290.15@nippy.intranet>

On Tue, Nov 24, 2020 at 11:24 PM Finn Thain <fthain@telegraphics.com.au> wrote:
>
> These statements are not "missing" unless you presume that code written
> before the latest de facto language spec was written should somehow be
> held to that spec.

There is no "language spec" the kernel adheres to. Even if it did,
kernel code is not frozen. If an improvement is found, it should be
applied.

> If the 'fallthrough' statement is not part of the latest draft spec then
> we should ask why not before we embrace it. Being that the kernel still
> prefers -std=gnu89 you might want to consider what has prevented
> -std=gnu99 or -std=gnu2x etc.

The C standard has nothing to do with this. We use compiler extensions
of several kinds, for many years. Even discounting those extensions,
the kernel is not even conforming to C due to e.g. strict aliasing. I
am not sure what you are trying to argue here.

But, since you insist: yes, the `fallthrough` attribute is in the
current C2x draft.

Cheers,
Miguel

  reply index

Thread overview: 70+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-11-20 18:21 Gustavo A. R. Silva
2020-11-20 18:28 ` Joe Perches
2020-11-20 19:02   ` Gustavo A. R. Silva
2020-11-20 18:40 ` [PATCH 134/141] video: fbdev: lxfb_ops: " Gustavo A. R. Silva
2020-11-22 22:05   ` Sam Ravnborg
2020-11-24 14:44     ` Gustavo A. R. Silva
2020-11-20 18:40 ` [PATCH 135/141] video: fbdev: pm2fb: " Gustavo A. R. Silva
2020-11-20 18:53 ` [PATCH 000/141] " Jakub Kicinski
2020-11-20 19:04   ` Gustavo A. R. Silva
2020-11-20 19:30   ` Kees Cook
2020-11-20 19:51     ` Jakub Kicinski
2020-11-20 20:48       ` Kees Cook
2020-11-22 16:17       ` Kees Cook
2020-11-22 18:21         ` James Bottomley
2020-11-22 18:25           ` Joe Perches
2020-11-22 19:12             ` James Bottomley
2020-11-22 19:22               ` Joe Perches
2020-11-22 19:53                 ` James Bottomley
2020-11-23 13:03                   ` [Intel-wired-lan] " Gustavo A. R. Silva
2020-11-23 16:31                     ` James Bottomley
2020-11-24 21:32                       ` Kees Cook
2020-11-24 22:24                         ` Finn Thain
2020-11-24 23:15                           ` Miguel Ojeda [this message]
2020-11-24 23:53                             ` Finn Thain
2020-11-25  1:05                               ` Miguel Ojeda
2020-11-25  7:05                         ` James Bottomley
2020-11-25 12:24                           ` Nick Desaulniers
2020-11-25 21:33                             ` Finn Thain
2020-11-25 22:09                               ` Nick Desaulniers
2020-11-25 23:21                                 ` Finn Thain
2020-11-26  0:30                                 ` Finn Thain
     [not found]                             ` <20201125082405.1d8c23dc@kicinski-fedora-pc1c0hjn.dhcp.thefacebook.com>
2020-11-25 17:04                               ` Miguel Ojeda
2020-11-25 22:09                               ` Nick Desaulniers
2020-11-25 21:10                           ` Kees Cook
2020-11-22 20:35           ` Miguel Ojeda
2020-11-22 22:36             ` James Bottomley
2020-11-23 14:19               ` Miguel Ojeda
2020-11-23 15:58                 ` James Bottomley
2020-11-23 16:24                   ` Rafael J. Wysocki
2020-11-23 16:32                   ` Joe Perches
2020-11-23 18:56                   ` Miguel Ojeda
2020-11-23 20:37                     ` James Bottomley
2020-11-25  0:32                       ` Miguel Ojeda
2020-11-25 22:44                         ` Edward Cree
2020-11-26 14:53                           ` Miguel Ojeda
2020-11-26 15:28                             ` Geert Uytterhoeven
2020-11-26 16:18                               ` Karol Herbst
2020-11-26 17:05                               ` Miguel Ojeda
2020-11-25 10:38                       ` Andy Shevchenko
2020-11-25  9:01                   ` Sean Young
2020-11-22 22:54             ` Finn Thain
2020-11-22 23:04               ` James Bottomley
2020-11-23 14:05               ` Miguel Ojeda
2020-11-24  0:58                 ` Finn Thain
2020-11-24  1:05                   ` Joe Perches
2020-11-24  2:48                     ` Finn Thain
2020-11-24 23:46                   ` Miguel Ojeda
2020-11-22 22:10           ` Sam Ravnborg
2020-11-24  1:32         ` Nick Desaulniers
2020-11-24 21:25           ` Kees Cook
2020-11-25 23:02             ` Edward Cree
2020-12-01 14:08           ` Dan Carpenter
2020-12-01 14:04         ` Dan Carpenter
2020-11-20 22:21 ` Miguel Ojeda
2020-11-23 20:03 ` Jason Gunthorpe
2020-11-24 14:47   ` Gustavo A. R. Silva
     [not found] ` <160616392671.21180.16517492185091399884.b4-ty@kernel.org>
2020-11-24 14:47   ` Gustavo A. R. Silva
2020-12-01  5:52 ` Martin K. Petersen
2020-12-01  8:20   ` Gustavo A. R. Silva
2020-12-08  4:52 ` (subset) " Martin K. Petersen

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