From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mga11.intel.com (mga11.intel.com [192.55.52.93]) by dpdk.org (Postfix) with ESMTP id D060D7EB0 for ; Wed, 9 Dec 2015 11:45:07 +0100 (CET) Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by fmsmga102.fm.intel.com with ESMTP; 09 Dec 2015 02:45:06 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.20,403,1444719600"; d="scan'208";a="869896363" Received: from fmsmsx104.amr.corp.intel.com ([10.18.124.202]) by fmsmga002.fm.intel.com with ESMTP; 09 Dec 2015 02:45:06 -0800 Received: from fmsmsx120.amr.corp.intel.com (10.18.124.208) by fmsmsx104.amr.corp.intel.com (10.18.124.202) with Microsoft SMTP Server (TLS) id 14.3.248.2; Wed, 9 Dec 2015 02:45:06 -0800 Received: from shsmsx102.ccr.corp.intel.com (10.239.4.154) by fmsmsx120.amr.corp.intel.com (10.18.124.208) with Microsoft SMTP Server (TLS) id 14.3.248.2; Wed, 9 Dec 2015 02:45:06 -0800 Received: from shsmsx103.ccr.corp.intel.com ([169.254.4.138]) by shsmsx102.ccr.corp.intel.com ([169.254.2.42]) with mapi id 14.03.0248.002; Wed, 9 Dec 2015 18:45:04 +0800 From: "Xie, Huawei" To: "De Lara Guarch, Pablo" , "dev@dpdk.org" Thread-Topic: [PATCH v2] examples/vhost: fix strict aliasing error on gcc 4.4.7 Thread-Index: AdEybqk1tadRpzVKQIqgJmzN/Ye6ZA== Date: Wed, 9 Dec 2015 10:45:04 +0000 Message-ID: References: <1449573835-149947-1-git-send-email-pablo.de.lara.guarch@intel.com> <1449653999-55759-1-git-send-email-pablo.de.lara.guarch@intel.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [10.239.127.40] Content-Type: text/plain; charset="Windows-1252" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Subject: Re: [dpdk-dev] [PATCH v2] examples/vhost: fix strict aliasing error on gcc 4.4.7 X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 09 Dec 2015 10:45:08 -0000 On 12/9/2015 5:40 PM, De Lara Guarch, Pablo wrote:=0A= > From: "De Lara Guarch, Pablo" =0A= >=0A= > Fixes following error on gcc 4.4.7:=0A= >=0A= > make: Entering directory `/tmp/dpdk-tmp/examples/vhost'=0A= > CC main.o=0A= > cc1: warnings being treated as errors=0A= > /tmp/dpdk-tmp/examples/vhost/main.c: In function =91new_device=92:=0A= > /tmp/dpdk-tmp/x86_64-native-linuxapp-gcc/include/rte_ring.h:740: error:= =0A= > dereferencing pointer =91mbuf.486=92 does break strict-aliasing rules= =0A= > /tmp/dpdk-tmp/examples/vhost/main.c:1503: note: initialized from here=0A= > ...=0A= > /tmp/dpdk-tmp/examples/vhost/main.c:1503: note: initialized from here=0A= > /tmp/dpdk-tmp/x86_64-native-linuxapp-gcc/include/rte_ring.h:740: error:= =0A= > dereferencing pointer =91({anonymous})=92 does break strict-aliasing = rules=0A= > /tmp/dpdk-tmp/examples/vhost/main.c:1804: note: initialized from here=0A= > make[1]: *** [main.o] Error 1=0A= >=0A= > Fixes: d19533e8 ("examples/vhost: copy old vhost example")=0A= >=0A= > Reported-by: Qian Xu =0A= > Signed-off-by: Pablo de Lara =0A= Acked-by: Huawei Xie =0A= =0A= =0A=