From mboxrd@z Thu Jan  1 00:00:00 1970
From: Thomas Monjalon <thomas.monjalon@6wind.com>
Subject: Re: [PATCH] net/mlx5: fix an uninitialised variable
Date: Thu, 06 Apr 2017 13:06:30 +0200
Message-ID: <2011142.xmeUg0X0rg@xps13>
References: <4b9e3b9e3328d43d5766a39391695e704298d04f.1491470160.git.nelio.laranjeiro@6wind.com>
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Cc: dev@dpdk.org, Ferruh Yigit <ferruh.yigit@intel.com>,
 Adrien Mazarguil <adrien.mazarguil@6wind.com>,
 Olivier Matz <olivier.matz@6wind.com>, stable@dpdk.org
To: Nelio Laranjeiro <nelio.laranjeiro@6wind.com>
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2017-04-06 11:16, Nelio Laranjeiro:
> Since patch "mbuf: structure reorganization" the compiler complains
>=20
>  .../drivers/net/mlx5/mlx5_rxtx.c: In function =E2=80=98mlx5_rx_burst=
=E2=80=99:
>  .../drivers/net/mlx5/mlx5_rxtx.c:2082:17: error: =E2=80=98len=E2=80=99=
 may be used
> uninitialized in this function [-Werror=3Dmaybe-uninitialized]
>=20
> len is not initialised as it will be at the first segment of a receiv=
ed
> packet, but it remains hard for the compiler to determine it.
>=20
> Fixes: 9964b965ad69 ("net/mlx5: re-add Rx scatter support")
>=20
> Cc: stable@dpdk.org
> Signed-off-by: Nelio Laranjeiro <nelio.laranjeiro@6wind.com>
> Acked-by: Olivier Matz <olivier.matz@6wind.com>

Applied, thanks

It is important to note that we see this error only after the mbuf rewo=
rk
of 17.05, only with GCC, and only when debug is enabled.