linux-kernel - Re: [PATCH] Enable '-Werror' by default for all kernel builds

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Message-ID: <YTi4RdEFfa7m/ufD@zeniv-ca.linux.org.uk>
Date:   Wed, 8 Sep 2021 13:19:01 +0000
From:   Al Viro <viro@...iv.linux.org.uk>
To:     Guenter Roeck <linux@...ck-us.net>
Cc:     Arnd Bergmann <arnd@...nel.org>,
        Geert Uytterhoeven <geert@...ux-m68k.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        "David S. Miller" <davem@...emloft.net>,
        Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Christian Koenig <christian.koenig@....com>,
        Huang Rui <ray.huang@....com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-sparc <sparclinux@...r.kernel.org>,
        Martin Sebor <msebor@....gnu.org>
Subject: Re: [PATCH] Enable '-Werror' by default for all kernel builds

On Wed, Sep 08, 2021 at 05:42:30AM -0700, Guenter Roeck wrote:

> Oddly enough, a memcpy on the 'rtc' variable doesn't fail,
> neither with nor without volatile. Something else is going on.

While we are at it, would memcpy_fromio() complain?  Seeing that
this is what's really intended there...