linux-kernel - Re: [PATCH] tools/build: tweak unused value workaround

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]

Date:   Tue, 14 Apr 2020 17:00:06 -0700
From:   Andrew Morton <akpm@...ux-foundation.org>
To:     George Burgess IV <gbiv@...gle.com>
Cc:     ndesaulniers@...gle.com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] tools/build: tweak unused value workaround

On Tue, 14 Apr 2020 12:56:38 -0700 George Burgess IV <gbiv@...gle.com> wrote:

> Clang has -Wself-assign enabled by default under -Wall, which always
> gets -Werror'ed on this file, causing sync-compare-and-swap to be
> disabled by default. The generally-accepted way to spell "this value is
> intentionally unused," is casting it to `void`. This is accepted by both
> GCC and Clang with -Wall enabled: https://godbolt.org/z/qqZ9r3
> 

What does "disabled by default" mean?  Presumably it should now be
enabled, but I don't think this disabling happens in the mainline
kernel tree?