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Date: Fri, 25 Mar 2016 13:57:30 +0000
From: Bruce Richardson <bruce.richardson@intel.com>
To: "Ananyev, Konstantin" <konstantin.ananyev@intel.com>
Cc: "Yigit, Ferruh" <ferruh.yigit@intel.com>, "dev@dpdk.org" <dev@dpdk.org>,
 Stephen Hemminger <stephen@networkplumber.org>
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Subject: Re: [dpdk-dev] [PATCH v2] ixgbe: disable icc compile warning
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On Thu, Mar 24, 2016 at 05:47:21PM +0000, Ananyev, Konstantin wrote:
> > -----Original Message-----
> > From: Yigit, Ferruh
> > Sent: Thursday, March 24, 2016 5:35 PM
> > To: dev@dpdk.org
> > Cc: Stephen Hemminger; Ananyev, Konstantin; Yigit, Ferruh
> > Subject: [PATCH v2] ixgbe: disable icc compile warning
> > 
> > icc (icc (ICC) 16.0.1 20151021) is generating following compile error:
> > "
> >   CC ixgbe_rxtx.o
> >   .../drivers/net/ixgbe/ixgbe_rxtx.c(153): error #3656: variable
> >   "free" may be used before its value is set
> >                       (nb_free > 0 && m->pool != free[0]->pool)) {
> > 			                         ^
> > "
> > 
> > Indeed this is a false positive and code is correct.
> > "nb_free" check prevents the free[] access before its value set.
> > 
> > Disabling this icc warning (#3656) for file ixgbe_rxtx.c.
> > 
> > Signed-off-by: Ferruh Yigit <ferruh.yigit@intel.com>
> > ---
> >  drivers/net/ixgbe/Makefile | 2 ++
> >  1 file changed, 2 insertions(+)
> > 
> > diff --git a/drivers/net/ixgbe/Makefile b/drivers/net/ixgbe/Makefile
> > index c032775..50bf51c 100644
> > --- a/drivers/net/ixgbe/Makefile
> > +++ b/drivers/net/ixgbe/Makefile
> > @@ -49,6 +49,8 @@ ifeq ($(CC), icc)
> >  #
> >  CFLAGS_BASE_DRIVER = -wd174 -wd593 -wd869 -wd981 -wd2259
> > 
> > +CFLAGS_ixgbe_rxtx.o += -wd3656
> > +
> >  else ifeq ($(CC), clang)
> >  #
> >  # CFLAGS for clang
> > --
> 
> Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com>
>
Applied to dpdk-next-net/rel_16_04

/Bruce