linux-kernel - Re: [PATCH][next] geneve: Avoid -Wflex-array-member-not-at-end warning

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Message-ID: <feff0872-567c-48fc-b7e4-c7d11a782c64@lunn.ch>
Date: Tue, 9 Sep 2025 18:15:22 +0200
From: Andrew Lunn <andrew@...n.ch>
To: "Gustavo A. R. Silva" <gustavoars@...nel.org>
Cc: Andrew Lunn <andrew+netdev@...n.ch>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-hardening@...r.kernel.org
Subject: Re: [PATCH][next] geneve: Avoid -Wflex-array-member-not-at-end
 warning

On Tue, Sep 09, 2025 at 05:42:39PM +0200, 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.
> 
> Move the conflicting declaration to the end of the corresponding
> structure. Notice that `struct ip_tunnel_info` is a flexible
> structure, this is a structure that contains a flexible-array
> member.
> 
> Fix the following warning:
> 
> drivers/net/geneve.c:56:33: 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>

Reviewed-by: Andrew Lunn <andrew@...n.ch>

    Andrew