linux-kernel - Re: [PATCH] compiler_attribute: remove CONFIG_ENABLE_MUST

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <CAK7LNARjU5HTcTjJG1-sQTJBFqohC1O8aAvFs3Hn_sXscH_pdg@mail.gmail.com>
Date:   Mon, 23 Nov 2020 12:36:18 +0900
From:   Masahiro Yamada <masahiroy@...nel.org>
To:     Miguel Ojeda <miguel.ojeda.sandonis@...il.com>
Cc:     "Jason A. Donenfeld" <Jason@...c4.com>,
        Shuah Khan <shuah@...nel.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        "open list:KERNEL SELFTEST FRAMEWORK" 
        <linux-kselftest@...r.kernel.org>,
        Network Development <netdev@...r.kernel.org>,
        wireguard@...ts.zx2c4.com,
        clang-built-linux <clang-built-linux@...glegroups.com>,
        Nick Desaulniers <ndesaulniers@...gle.com>
Subject: Re: [PATCH] compiler_attribute: remove CONFIG_ENABLE_MUST_CHECK

On Sun, Nov 22, 2020 at 5:45 AM Miguel Ojeda
<miguel.ojeda.sandonis@...il.com> wrote:
>
> On Sat, Nov 21, 2020 at 8:44 PM Masahiro Yamada <masahiroy@...nel.org> wrote:
> >
> > Our goal is to always enable __must_check where appreciate, so this
> > CONFIG option is no longer needed.
>
> This would be great. It also implies we can then move it to
> `compiler_attributes.h` since it does not depend on config options
> anymore.
>
> We should also rename it to `__nodiscard`, since that is the
> standardized name (coming soon to C2x and in C++ for years).
>
> Cc'ing the Clang folks too to make them aware.
>

I can move it to compiler_attribute.h

This attribute is supported by gcc, clang, and icc.
https://godbolt.org/z/ehd6so

I can send v2.



I do not mind renaming, but it should be done in a separate patch.




-- 
Best Regards
Masahiro Yamada