linux-kernel - Re: [PATCH][next] tw89: core.h: Replace zero-length array with flexible-array member

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Message-ID: <874k4x24er.fsf@kernel.org>
Date:   Thu, 17 Feb 2022 12:06:36 +0200
From:   Kalle Valo <kvalo@...nel.org>
To:     Jakub Kicinski <kuba@...nel.org>
Cc:     "Gustavo A. R. Silva" <gustavoars@...nel.org>,
        Ping-Ke Shih <pkshih@...ltek.com>,
        "David S. Miller" <davem@...emloft.net>,
        linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-hardening@...r.kernel.org
Subject: Re: [PATCH][next] tw89: core.h: Replace zero-length array with flexible-array member

Jakub Kicinski <kuba@...nel.org> writes:

> On Wed, 16 Feb 2022 13:50:47 -0600 Gustavo A. R. Silva wrote:
>> There is a regular need in the kernel to provide a way to declare
>> having a dynamically sized set of trailing elements in a structure.
>> Kernel code should always use “flexible array members”[1] for these
>> cases. The older style of one-element or zero-length arrays should
>> no longer be used[2].
>> 
>> [1] https://en.wikipedia.org/wiki/Flexible_array_member
>> [2]
>> https://www.kernel.org/doc/html/v5.16/process/deprecated.html#zero-length-and-one-element-arrays
>> 
>> Link: https://github.com/KSPP/linux/issues/78
>> Signed-off-by: Gustavo A. R. Silva <gustavoars@...nel.org>
>
> The subject is off.

I can fix that during commit.

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