From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mail26.static.mailgun.info ([104.130.122.26]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1jYPQS-00056h-K5 for ath10k@lists.infradead.org; Tue, 12 May 2020 07:34:10 +0000 MIME-Version: 1.0 Subject: Re: [PATCH net-next 1/2] ath10k: fix gcc-10 zero-length-bounds warnings From: Kalle Valo In-Reply-To: <20200509120707.188595-1-arnd@arndb.de> References: <20200509120707.188595-1-arnd@arndb.de> Message-Id: <20200512073342.A422DC44791@smtp.codeaurora.org> Date: Tue, 12 May 2020 07:33:42 +0000 (UTC) List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "ath10k" Errors-To: ath10k-bounces+kvalo=adurom.com@lists.infradead.org To: Arnd Bergmann Cc: "Gustavo A. R. Silva" , Erik Stromdahl , netdev@vger.kernel.org, linux-wireless@vger.kernel.org, linux-kernel@vger.kernel.org, ath10k@lists.infradead.org, Kalle Valo , Michal Kazior , Wen Gong , "David S. Miller" Arnd Bergmann wrote: > gcc-10 started warning about out-of-bounds access for zero-length > arrays: > > In file included from drivers/net/wireless/ath/ath10k/core.h:18, > from drivers/net/wireless/ath/ath10k/htt_rx.c:8: > drivers/net/wireless/ath/ath10k/htt_rx.c: In function 'ath10k_htt_rx_tx_fetch_ind': > drivers/net/wireless/ath/ath10k/htt.h:1683:17: warning: array subscript 65535 is outside the bounds of an interior zero-length array 'struct htt_tx_fetch_record[0]' [-Wzero-length-bounds] > 1683 | return (void *)&ind->records[le16_to_cpu(ind->num_records)]; > | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > drivers/net/wireless/ath/ath10k/htt.h:1676:29: note: while referencing 'records' > 1676 | struct htt_tx_fetch_record records[0]; > | ^~~~~~~ > > Make records[] a flexible array member to allow this, moving it behind > the other zero-length member that is not accessed in a way that gcc > warns about. > > Fixes: 22e6b3bc5d96 ("ath10k: add new htt definitions") > Signed-off-by: Arnd Bergmann > Signed-off-by: Kalle Valo 2 patches applied to ath-next branch of ath.git, thanks. 9f12bebd512c ath10k: fix gcc-10 zero-length-bounds warnings 32221df6765b ath10k: fix ath10k_pci struct layout -- https://patchwork.kernel.org/patch/11538233/ https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches _______________________________________________ ath10k mailing list ath10k@lists.infradead.org http://lists.infradead.org/mailman/listinfo/ath10k