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intel.com; dkim=none (message not signed) header.d=none;intel.com; dmarc=pass action=none header.from=nvidia.com; Received-SPF: Pass (protection.outlook.com: domain of nvidia.com designates 216.228.112.34 as permitted sender) receiver=protection.outlook.com; client-ip=216.228.112.34; helo=mail.nvidia.com; Received: from mail.nvidia.com (216.228.112.34) by DM6NAM11FT024.mail.protection.outlook.com (10.13.172.159) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.20.4308.20 via Frontend Transport; Tue, 13 Jul 2021 06:49:35 +0000 Received: from nvidia.com (172.20.187.5) by HQMAIL107.nvidia.com (172.20.187.13) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Tue, 13 Jul 2021 06:49:31 +0000 From: Eli Britstein To: CC: Ilya Maximets , Gaetan Rivet , Majd Dibbiny , Asaf Penso , "Thomas Monjalon" , Harry Van Haaren , Date: Tue, 13 Jul 2021 09:49:09 +0300 Message-ID: <20210713064910.12793-3-elibr@nvidia.com> X-Mailer: git-send-email 2.18.1 In-Reply-To: <20210713064910.12793-1-elibr@nvidia.com> References: <20210713064910.12793-1-elibr@nvidia.com> MIME-Version: 1.0 X-Originating-IP: [172.20.187.5] X-ClientProxiedBy: HQMAIL107.nvidia.com (172.20.187.13) To HQMAIL107.nvidia.com (172.20.187.13) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 2c5bccb7-3cad-4f86-45c5-08d945ca607c X-MS-TrafficTypeDiagnostic: MWHPR12MB1407: X-LD-Processed: 43083d15-7273-40c1-b7db-39efd9ccc17a,ExtAddr X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:6108; 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DIR:OUT; SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 13 Jul 2021 06:49:35.2953 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 2c5bccb7-3cad-4f86-45c5-08d945ca607c X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a; Ip=[216.228.112.34]; Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: DM6NAM11FT024.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: MWHPR12MB1407 Subject: [dpdk-dev] [PATCH 2/3] mbuf: avoid cast-align warning in pktmbuf mtod offset macro X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" In rte_pktmbuf_mtod_offset macro, there is a casting from char * to type 't', which may cause cast-align warning when using gcc flags '-Werror -Wcast-align': .../include/rte_mbuf_core.h:723:3: error: cast increases required alignment of target type [-Werror=cast-align] 723 | ((t)((char *)(m)->buf_addr + (m)->data_off + (o))) | ^ As the code assumes correct alignment, add first a (void *) casting, to avoid the warning. Fixes: af75078fece3 ("first public release") Cc: stable@dpdk.org Signed-off-by: Eli Britstein Acked-by: Olivier Matz --- lib/mbuf/rte_mbuf_core.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/lib/mbuf/rte_mbuf_core.h b/lib/mbuf/rte_mbuf_core.h index bb38d7f581..dabdeee604 100644 --- a/lib/mbuf/rte_mbuf_core.h +++ b/lib/mbuf/rte_mbuf_core.h @@ -720,7 +720,7 @@ struct rte_mbuf_ext_shared_info { * The type to cast the result into. */ #define rte_pktmbuf_mtod_offset(m, t, o) \ - ((t)((char *)(m)->buf_addr + (m)->data_off + (o))) + ((t)(void *)((char *)(m)->buf_addr + (m)->data_off + (o))) /** * A macro that points to the start of the data in the mbuf.