linux-kernel - Re: [PATCH][next] platform/chrome: cros_ec_debugfs: Avoid -Wflex-array-member-not-at-end warnings

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Message-ID: <Z-u6U_GDhf53PTA6@google.com>
Date: Tue, 1 Apr 2025 10:05:07 +0000
From: Tzung-Bi Shih <tzungbi@...nel.org>
To: "Gustavo A. R. Silva" <gustavoars@...nel.org>
Cc: Benson Leung <bleung@...omium.org>, Guenter Roeck <groeck@...omium.org>,
	chrome-platform@...ts.linux.dev, linux-kernel@...r.kernel.org,
	linux-hardening@...r.kernel.org
Subject: Re: [PATCH][next] platform/chrome: cros_ec_debugfs: Avoid
 -Wflex-array-member-not-at-end warnings

On Fri, Mar 28, 2025 at 07:20:00AM -0600, Gustavo A. R. Silva wrote:
> -Wflex-array-member-not-at-end was introduced in GCC-14, and we are
> getting ready to enable it, globally.
> 
> Use the `DEFINE_RAW_FLEX()` helper for an on-stack definition of
> a flexible structure where the size of the flexible-array member
> is known at compile-time, and refactor the rest of the code,
> accordingly.
> 
> So, with these changes, fix the following warnings:
> 
> drivers/platform/chrome/cros_ec_debugfs.c:211:40: warning: structure containing a flexible array member is not at the end of another structure [-Wflex-array-member-not-at-end]
> drivers/platform/chrome/cros_ec_debugfs.c:257:40: warning: structure containing a flexible array member is not at the end of another structure [-Wflex-array-member-not-at-end]
> drivers/platform/chrome/cros_ec_debugfs.c:279:40: warning: structure containing a flexible array member is not at the end of another structure [-Wflex-array-member-not-at-end]
> 
> Signed-off-by: Gustavo A. R. Silva <gustavoars@...nel.org>

For my reference:
Reviewed-by: Tzung-Bi Shih <tzungbi@...nel.org>