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

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Message-ID: <20230110104609.GA1602079@linux.intel.com>
Date:   Tue, 10 Jan 2023 11:46:09 +0100
From:   Stanislaw Gruszka <stanislaw.gruszka@...ux.intel.com>
To:     "Gustavo A. R. Silva" <gustavoars@...nel.org>
Cc:     Oded Gabbay <ogabbay@...nel.org>, linux-hardening@...r.kernel.org,
        linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org
Subject: Re: [PATCH][next] habanalabs: Replace zero-length arrays with
 flexible-array members

On Mon, Jan 09, 2023 at 07:39:47PM -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: Stanislaw Gruszka <stanislaw.gruszka@...ux.intel.com>