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From:   Nick Desaulniers <ndesaulniers@google.com>
Date:   Tue, 27 Jul 2021 12:04:18 -0700
Message-ID: <CAKwvOdmMpLcYEKSyTavUmK-CxuR6H55ogwLQzRA1q12RuUYNNg@mail.gmail.com>
Subject: Re: [PATCH v2 1/3] base: mark 'no_warn' as unused
To:     Nathan Chancellor <nathan@kernel.org>,
        Bill Wendling <morbo@google.com>
Cc:     Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        "Rafael J. Wysocki" <rafael@kernel.org>,
        clang-built-linux <clang-built-linux@googlegroups.com>,
        LKML <linux-kernel@vger.kernel.org>,
        linux-toolchains@vger.kernel.org
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On Tue, Jul 27, 2021 at 11:32 AM Nathan Chancellor <nathan@kernel.org> wrote:
>
> On 7/27/2021 10:39 AM, 'Nick Desaulniers' via Clang Built Linux wrote:
> > Isn't -Wunused-but-set-variable enabled only for W=1 builds?
>
> Maybe Bill's tree does not have commit 885480b08469 ("Makefile: Move
> -Wno-unused-but-set-variable out of GCC only block"), which disables the
> warning for clang just like GCC for regular builds?

Looks like 885480b08469, which landed in v5.13-rc1, so that's a
possibility.  Should that be sent to stable@ so that we don't observe
these warnings for non-W=1 builds of stable branches with newer
versions of clang?
-- 
Thanks,
~Nick Desaulniers