From mboxrd@z Thu Jan  1 00:00:00 1970
From: Thomas Monjalon <thomas.monjalon@6wind.com>
Subject: Re: [PATCH v5] examples/vhost: fix strict aliasing error
	on gcc 4.4.7
Date: Wed, 09 Dec 2015 21:54:38 +0100
Message-ID: <3855694.xcpzN8qJoX@xps13>
References: <1449663630-83289-1-git-send-email-pablo.de.lara.guarch@intel.com>
 <1449671209-102009-1-git-send-email-pablo.de.lara.guarch@intel.com>
 <C37D651A908B024F974696C65296B57B4BB842C4@SHSMSX103.ccr.corp.intel.com>
Mime-Version: 1.0
Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: quoted-printable
Cc: dev@dpdk.org
To: "De Lara Guarch, Pablo" <pablo.de.lara.guarch@intel.com>
Return-path: <dev-bounces@dpdk.org>
Received: from mail-wm0-f46.google.com (mail-wm0-f46.google.com [74.125.82.46])
 by dpdk.org (Postfix) with ESMTP id E136E68A5
 for <dev@dpdk.org>; Wed,  9 Dec 2015 21:55:54 +0100 (CET)
Received: by mail-wm0-f46.google.com with SMTP id v187so3542633wmv.1
 for <dev@dpdk.org>; Wed, 09 Dec 2015 12:55:54 -0800 (PST)
In-Reply-To: <C37D651A908B024F974696C65296B57B4BB842C4@SHSMSX103.ccr.corp.intel.com>
List-Id: patches and discussions about DPDK <dev.dpdk.org>
List-Unsubscribe: <http://dpdk.org/ml/options/dev>,
 <mailto:dev-request@dpdk.org?subject=unsubscribe>
List-Archive: <http://dpdk.org/ml/archives/dev/>
List-Post: <mailto:dev@dpdk.org>
List-Help: <mailto:dev-request@dpdk.org?subject=help>
List-Subscribe: <http://dpdk.org/ml/listinfo/dev>,
 <mailto:dev-request@dpdk.org?subject=subscribe>
Errors-To: dev-bounces@dpdk.org
Sender: "dev" <dev-bounces@dpdk.org>

2015-12-09 14:33, Xie, Huawei:
> On 12/9/2015 10:27 PM, De Lara Guarch, Pablo wrote:
> > From: "De Lara Guarch, Pablo" <pablo.de.lara.guarch@intel.com>
> >
> > Fixes following error on gcc 4.4.7:
> >
> > make: Entering directory `/tmp/dpdk-tmp/examples/vhost'
> >   CC main.o
> > cc1: warnings being treated as errors
> > /tmp/dpdk-tmp/examples/vhost/main.c: In function =E2=80=98new_devic=
e=E2=80=99:
> > /tmp/dpdk-tmp/x86_64-native-linuxapp-gcc/include/rte_ring.h:740: er=
ror:
> >     dereferencing pointer =E2=80=98mbuf.486=E2=80=99 does break str=
ict-aliasing rules
> > /tmp/dpdk-tmp/examples/vhost/main.c:1503: note: initialized from he=
re
> > ...
> > /tmp/dpdk-tmp/examples/vhost/main.c:1503: note: initialized from he=
re
> > /tmp/dpdk-tmp/x86_64-native-linuxapp-gcc/include/rte_ring.h:740: er=
ror:
> >     dereferencing pointer =E2=80=98({anonymous})=E2=80=99 does brea=
k strict-aliasing rules
> > /tmp/dpdk-tmp/examples/vhost/main.c:1804: note: initialized from he=
re
> > make[1]: *** [main.o] Error 1
> >
> > Fixes: d19533e8 ("examples/vhost: copy old vhost example")
> >
> > Reported-by: Qian Xu <qian.q.xu@intel.com>
> > Signed-off-by: Pablo de Lara <pablo.de.lara.guarch@intel.com>
> Acked-by: Huawei Xie <huawei.xie@intel.com>

Applied, thanks