From mboxrd@z Thu Jan 1 00:00:00 1970 From: Thomas Monjalon Subject: Re: [PATCH] test: Disable strict-aliasing warnings Date: Fri, 27 Mar 2015 10:20:06 +0100 Message-ID: <9913571.Sq7Gc1tDuT@xps13> References: <1427397455-30368-1-git-send-email-pablo.de.lara.guarch@intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Cc: dev-VfR2kkLFssw@public.gmane.org To: Pablo de Lara Return-path: In-Reply-To: <1427397455-30368-1-git-send-email-pablo.de.lara.guarch-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org> List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces-VfR2kkLFssw@public.gmane.org Sender: "dev" 2015-03-26 19:17, Pablo de Lara: > DPDK does not build on gcc 4.4, as it complains due to > strict-aliasing rules in virtual_pmd and link_bonding_mode4 tests, > with no errors in next gcc versions: Do you mean it's not possible to fix it in the code? You are disabling some checks which may be relevant. > CC virtual_pmd.o > CC test_link_bonding_mode4.o > cc1: warnings being treated as errors > /root/dpdk/app/test/test_link_bonding_mode4.c: In function =E2=80=98t= est_mode4_expired=E2=80=99: > /root/dpdk/x86_64-native-linuxapp-gcc/include/rte_ring.h:645: error: = dereferencing pointer =E2=80=98pkt.409=E2=80=99 does break strict-alias= ing rules > /root/dpdk/x86_64-native-linuxapp-gcc/include/rte_ring.h:729: error: = dereferencing pointer =E2=80=98pkt.409=E2=80=99 does break strict-alias= ing rules > ... > cc1: warnings being treated as errors > /root/dpdk/app/test/virtual_pmd.c: In function =E2=80=98virtual_ethde= v_stats_reset=E2=80=99: > /root/dpdk/x86_64-native-linuxapp-gcc/include/rte_ring.h:645: error: = dereferencing pointer =E2=80=98pkt.338=E2=80=99 does break strict-alias= ing rules > /root/dpdk/x86_64-native-linuxapp-gcc/include/rte_ring.h:729: error: = dereferencing pointer =E2=80=98pkt.338=E2=80=99 does break strict-alias= ing rules >=20 > This patch fixes the compilation by disabling > these warnings. >=20 > Signed-off-by: Pablo de Lara > --- > app/test/Makefile | 5 +++++ > 1 files changed, 5 insertions(+), 0 deletions(-) >=20 > diff --git a/app/test/Makefile b/app/test/Makefile > index 4aca77c..0d62d07 100644 > --- a/app/test/Makefile > +++ b/app/test/Makefile > @@ -158,6 +158,11 @@ CFLAGS_test_memcpy_perf.o +=3D -fno-var-tracking= -assignments > endif > endif > =20 > +# Disable warnings of no-strict-aliasing in virtual_pmd > +# and test_link_bonding_mode4 tests > +CFLAGS_virtual_pmd.o +=3D -Wno-strict-aliasing > +CFLAGS_test_link_bonding_mode4.o +=3D -Wno-strict-aliasing > + > # this application needs libraries first > DEPDIRS-y +=3D lib > =20 >=20