From: Adrien Mazarguil <adrien.mazarguil@6wind.com>
To: dev@dpdk.org
Cc: Olga Shern <olgas@mellanox.com>
Subject: [dpdk-dev] [PATCH] net/mlx5: work around compilation issue
Date: Wed, 13 Jul 2016 16:33:22 +0200 [thread overview]
Message-ID: <1468420402-27477-1-git-send-email-adrien.mazarguil@6wind.com> (raw)
From: Olga Shern <olgas@mellanox.com>
RHEL 7.1's GCC for POWER8 reports the following error in one rte_memcpy()
macro call by mlx5:
error: array subscript is above array bounds [-Werror=array-bounds]
It appears to be a GCC bug which can be worked around by making parentheses
more explicit.
Signed-off-by: Olga Shern <olgas@mellanox.com>
Signed-off-by: Adrien Mazarguil <adrien.mazarguil@6wind.com>
---
drivers/net/mlx5/mlx5_rxtx.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/net/mlx5/mlx5_rxtx.c b/drivers/net/mlx5/mlx5_rxtx.c
index 615de94..fce3381 100644
--- a/drivers/net/mlx5/mlx5_rxtx.c
+++ b/drivers/net/mlx5/mlx5_rxtx.c
@@ -472,8 +472,8 @@ mlx5_wqe_write_inline_vlan(struct txq *txq, volatile union mlx5_wqe *wqe,
(uint8_t *)addr, 12);
rte_memcpy((uint8_t *)(uintptr_t)wqe->inl.eseg.inline_hdr_start + 12,
&vlan, sizeof(vlan));
- rte_memcpy((uint8_t *)(uintptr_t)wqe->inl.eseg.inline_hdr_start + 16,
- ((uint8_t *)addr + 12), 2);
+ rte_memcpy((uint8_t *)((uintptr_t)wqe->inl.eseg.inline_hdr_start + 16),
+ (uint8_t *)(addr + 12), 2);
addr += MLX5_ETH_VLAN_INLINE_HEADER_SIZE - sizeof(vlan);
length -= MLX5_ETH_VLAN_INLINE_HEADER_SIZE - sizeof(vlan);
size = (sizeof(wqe->inl.ctrl.ctrl) +
--
2.1.4
next reply other threads:[~2016-07-13 14:33 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-07-13 14:33 Adrien Mazarguil [this message]
2016-07-15 21:00 ` Thomas Monjalon
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