From: Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>
To: Kees Cook <keescook@chromium.org>
Cc: "Gustavo A. R. Silva" <gustavo@embeddedor.com>,
Ted Ts'o <tytso@mit.edu>, Greg KH <gregkh@linuxfoundation.org>,
linux-kernel <linux-kernel@vger.kernel.org>,
Dan <dan.carpenter@oracle.com>,
Andreas Dilger <adilger.kernel@dilger.ca>,
Masahiro Yamada <yamada.masahiro@socionext.com>,
Michal Marek <michal.lkml@markovi.net>,
Steven Rostedt <rostedt@goodmis.org>,
Mauro Carvalho Chehab <mchehab+samsung@kernel.org>,
Olof Johansson <olof@lxom.net>,
Konstantin Ryabitsev <konstantin@linuxfoundation.org>,
David Miller <davem@davemloft.net>,
Andrey Ryabinin <aryabinin@virtuozzo.com>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@kernel.org>,
Paul Lawrence <paullawrence@google.com>,
Sandipan Das <sandipan@linux.vnet.ibm.com>,
Andrey Konovalov <andreykn>
Subject: Re: [PATCH 1/2] Compiler Attributes: add support for __fallthrough (gcc >= 7.1)
Date: Mon, 22 Oct 2018 11:41:23 +0200 [thread overview]
Message-ID: <CANiq72n4+HDXPqr7xySSGx49g8vEcXaxO7a-By9cSg7YSxOS_A@mail.gmail.com> (raw)
In-Reply-To: <CAGXu5jKb-0H+smRAW6ngQKDZ-PbTThhMwhmu34iB8vjTa-4H8Q@mail.gmail.com>
On Mon, Oct 22, 2018 at 11:36 AM Kees Cook <keescook@chromium.org> wrote:
>
> We need to make sure the static analyzers are happy with either
> method. Additionally, when was -Wimplicit-fallthrough added to GCC? If
> it was added _before_ the attribute, we need to continue using the
> comment style otherwise we lose coverage even with gcc itself.
> Additionally, does Clang support this attribute (it supports
> -Wimplicit-fallthrough).
Please take a look at the rationale (also more details at the linked thread):
* gcc 7.1 added -Wimplicit-fallthrough at the same time as the
attribute and the comment parsing.
* clang does *not* support the attribute in C.
Cheers,
Miguel
next prev parent reply other threads:[~2018-10-22 9:41 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-21 17:14 [PATCH 0/2] Compiler Attributes: __fallthrough Miguel Ojeda
2018-10-21 17:14 ` [PATCH 1/2] Compiler Attributes: add support for __fallthrough (gcc >= 7.1) Miguel Ojeda
2018-10-21 22:27 ` Theodore Y. Ts'o
[not found] ` <CANiq72mXV6WTyHXNZJDTfFOpPrXD0zD6cB30bGOuKO44AvRiog@mail.gmail.com>
2018-10-22 9:34 ` Kees Cook
2018-10-22 9:41 ` Miguel Ojeda [this message]
2018-10-22 9:43 ` Miguel Ojeda
2018-10-22 17:17 ` Nick Desaulniers
2018-10-22 20:59 ` Miguel Ojeda
2018-10-22 10:53 ` Kees Cook
2018-10-22 11:24 ` Miguel Ojeda
2018-10-22 13:39 ` Miguel Ojeda
2018-10-22 17:23 ` Nick Desaulniers
[not found] ` <8fb78062-b6d4-6f2d-d943-44bec6b95ff0@petrovitsch.priv.at>
2018-10-22 10:27 ` Dan Carpenter
2018-10-22 10:45 ` Bernd Petrovitsch
2018-10-22 10:53 ` Dan Carpenter
2018-10-22 11:07 ` Miguel Ojeda
2018-10-22 17:49 ` Bernd Petrovitsch
2018-10-22 17:54 ` Nick Desaulniers
2018-10-22 18:13 ` Bernd Petrovitsch
2018-10-22 21:34 ` Miguel Ojeda
2018-10-22 17:26 ` Nick Desaulniers
2018-10-22 0:42 ` Matthew Wilcox
2018-10-22 6:58 ` Theodore Y. Ts'o
2018-10-22 9:32 ` Miguel Ojeda
2018-10-22 12:07 ` Luc Van Oostenryck
2018-10-22 12:09 ` Miguel Ojeda
2018-10-22 17:36 ` Nick Desaulniers
2018-10-22 21:17 ` Miguel Ojeda
2018-10-21 17:14 ` [PATCH 2/2] Compiler Attributes: auxdisplay: panel: use __fallthrough Miguel Ojeda
2018-10-21 18:11 ` Joe Perches
2018-10-22 9:51 ` Miguel Ojeda
2018-10-22 15:48 ` Joe Perches
2018-10-22 14:10 ` Kees Cook
[not found] ` <20181023053542.lsklua2p3lnbkqir@mwanda>
2018-11-02 10:49 ` Miguel Ojeda
2018-11-02 10:56 ` Miguel Ojeda
2018-10-21 18:29 ` [PATCH 0/2] Compiler Attributes: __fallthrough Greg Kroah-Hartman
2018-10-21 18:52 ` Joe Perches
2018-10-22 5:27 ` Dan Carpenter
2018-10-22 9:48 ` Miguel Ojeda
2018-10-22 16:54 ` Nick Desaulniers
2018-10-22 21:23 ` Miguel Ojeda
2018-10-23 5:43 ` Dan Carpenter
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