linux-kernel - Re: [GIT PULL] gcc-plugins updates for v4.13-rc1

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Message-ID: <CA+55aFzNTU9-exJ6kkMzUjJ4AL4GGBn0ghtZzSPC+sRwzVe6cQ@mail.gmail.com>
Date:   Wed, 5 Jul 2017 15:39:02 -0700
From:   Linus Torvalds <torvalds@...ux-foundation.org>
To:     Ard Biesheuvel <ard.biesheuvel@...aro.org>
Cc:     Arnd Bergmann <arnd@...db.de>, Kees Cook <keescook@...omium.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Jean Delvare <jdelvare@...e.de>
Subject: Re: [GIT PULL] gcc-plugins updates for v4.13-rc1

On Wed, Jul 5, 2017 at 3:27 PM, Ard Biesheuvel
<ard.biesheuvel@...aro.org> wrote:
>
> The compiler already keeps track of which auto variables have their
> address taken, so it shouldn't be /that/ hard to come up with a plugin
> that zero initializes such variables before their address is taken if
> no such initialization is included in the code.

Yeah. Except one of the issues with the plugin stuff is that people
probably don't do any of this normally.

I suspect it would be a really nice *general* gcc extension..

            Linus