linux-hardening - Re: [PATCH][next] nvmem: u-boot-env: replace zero-length array with flexible-array member

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Date:   Fri, 13 Jan 2023 07:41:02 +0100
From:   Rafał Miłecki <rafal@...ecki.pl>
To:     "Gustavo A. R. Silva" <gustavoars@...nel.org>
Cc:     Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
        linux-kernel@...r.kernel.org, linux-hardening@...r.kernel.org
Subject: Re: [PATCH][next] nvmem: u-boot-env: replace zero-length array with
 flexible-array member

On 2023-01-10 02:40, 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
> array declaration in struct u_boot_env_image_broadcom with flex-array
> member.
> 
> 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].

I also handled this issue in my
[PATCH V2 4/6] nvmem: u-boot-env: convert to layout driver
https://lore.kernel.org/linux-arm-kernel/20230111073102.8147-4-zajec5@gmail.com/