linux-kernel - Re: [PATCH][next] cifs: Replace zero-length arrays with flexible-array members

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Message-ID: <CAH2r5mt=DLrN2F0wwhPpMicHZsGJF5nQXQk0ptYTJy2a9xWcwA@mail.gmail.com>
Date:   Sat, 14 Jan 2023 12:12:16 -0600
From:   Steve French <smfrench@...il.com>
To:     Kees Cook <keescook@...omium.org>
Cc:     "Gustavo A. R. Silva" <gustavoars@...nel.org>,
        Steve French <sfrench@...ba.org>, Paulo Alcantara <pc@....nz>,
        Ronnie Sahlberg <lsahlber@...hat.com>,
        Shyam Prasad N <sprasad@...rosoft.com>,
        Tom Talpey <tom@...pey.com>, linux-cifs@...r.kernel.org,
        samba-technical@...ts.samba.org, linux-kernel@...r.kernel.org,
        linux-hardening@...r.kernel.org
Subject: Re: [PATCH][next] cifs: Replace zero-length arrays with
 flexible-array members

merged into cifs-2.6.git for-next

On Thu, Jan 12, 2023 at 4:52 PM Kees Cook <keescook@...omium.org> wrote:
>
> On Mon, Jan 09, 2023 at 07:39:00PM -0600, Gustavo A. R. Silva wrote:
> > Zero-length arrays are deprecated[1] and we are moving towards
> > adopting C99 flexible-array members instead. So, replace zero-length
> > arrays in a couple of structures with flex-array members.
> >
> > This helps with the ongoing efforts to tighten the FORTIFY_SOURCE
> > routines on memcpy() and help us make progress towards globally
> > enabling -fstrict-flex-arrays=3 [2].
> >
> > Link: https://www.kernel.org/doc/html/latest/process/deprecated.html#zero-length-and-one-element-arrays [1]
> > Link: https://gcc.gnu.org/pipermail/gcc-patches/2022-October/602902.html [2]
> > Link: https://github.com/KSPP/linux/issues/78
> > Signed-off-by: Gustavo A. R. Silva <gustavoars@...nel.org>
>
> Reviewed-by: Kees Cook <keescook@...omium.org>
>
> --
> Kees Cook



-- 
Thanks,

Steve