linux-hardening - [PATCH][next] net: libwx: Replace zero-length array with flexible-array member

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Date:   Mon, 15 May 2023 13:23:46 -0600
From:   "Gustavo A. R. Silva" <gustavoars@...nel.org>
To:     Jiawen Wu <jiawenwu@...stnetic.com>,
        Mengyuan Lou <mengyuanlou@...-swift.com>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>
Cc:     netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        "Gustavo A. R. Silva" <gustavoars@...nel.org>,
        linux-hardening@...r.kernel.org
Subject: [PATCH][next] net: libwx: Replace zero-length array with
 flexible-array member

Zero-length arrays as fake flexible arrays are deprecated, and we are
moving towards adopting C99 flexible-array members instead.

Transform zero-length array into flexible-array member in struct
wx_q_vector.

Link: https://github.com/KSPP/linux/issues/21
Link: https://github.com/KSPP/linux/issues/286
Link: https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html
Signed-off-by: Gustavo A. R. Silva <gustavoars@...nel.org>
---
 drivers/net/ethernet/wangxun/libwx/wx_type.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/wangxun/libwx/wx_type.h b/drivers/net/ethernet/wangxun/libwx/wx_type.h
index 32f952d93009..cbe7f184b50e 100644
--- a/drivers/net/ethernet/wangxun/libwx/wx_type.h
+++ b/drivers/net/ethernet/wangxun/libwx/wx_type.h
@@ -598,7 +598,7 @@ struct wx_q_vector {
 	char name[IFNAMSIZ + 17];
 
 	/* for dynamic allocation of rings associated with this q_vector */
-	struct wx_ring ring[0] ____cacheline_internodealigned_in_smp;
+	struct wx_ring ring[] ____cacheline_internodealigned_in_smp;
 };
 
 enum wx_isb_idx {
-- 
2.34.1