From: Pablo de Lara <pablo.de.lara.guarch@intel.com>
To: dev@dpdk.org
Subject: [PATCH v4] Fixes following error on gcc 4.4.7:
Date: Wed, 9 Dec 2015 12:20:30 +0000 [thread overview]
Message-ID: <1449663630-83289-1-git-send-email-pablo.de.lara.guarch@intel.com> (raw)
In-Reply-To: <1449659374-78252-1-git-send-email-pablo.de.lara.guarch@intel.com>
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 ‘new_device’:
/tmp/dpdk-tmp/x86_64-native-linuxapp-gcc/include/rte_ring.h:740: error:
dereferencing pointer ‘mbuf.486’ does break strict-aliasing rules
/tmp/dpdk-tmp/examples/vhost/main.c:1503: note: initialized from here
...
/tmp/dpdk-tmp/examples/vhost/main.c:1503: note: initialized from here
/tmp/dpdk-tmp/x86_64-native-linuxapp-gcc/include/rte_ring.h:740: error:
dereferencing pointer ‘({anonymous})’ does break strict-aliasing rules
/tmp/dpdk-tmp/examples/vhost/main.c:1804: note: initialized from here
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>
---
Changes in v4:
- Simplify patch, just casting to void *, without using new variables
Changes in v3:
- Remove even more unnecessary castings
Changes in v2:
- Remove unnecessary casting
examples/vhost/main.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/examples/vhost/main.c b/examples/vhost/main.c
index dc3a012..f3c50c5 100644
--- a/examples/vhost/main.c
+++ b/examples/vhost/main.c
@@ -1500,7 +1500,7 @@ attach_rxmbuf_zcp(struct virtio_net *dev)
}
} while (unlikely(phys_addr == 0));
- rte_ring_sc_dequeue(vpool->ring, (void **)&mbuf);
+ rte_ring_sc_dequeue(vpool->ring, (void *)mbuf);
if (unlikely(mbuf == NULL)) {
LOG_DEBUG(VHOST_DATA,
"(%"PRIu64") in attach_rxmbuf_zcp: "
@@ -1801,7 +1801,7 @@ virtio_tx_route_zcp(struct virtio_net *dev, struct rte_mbuf *m,
/* Allocate an mbuf and populate the structure. */
vpool = &vpool_array[MAX_QUEUES + vmdq_rx_q];
- rte_ring_sc_dequeue(vpool->ring, (void **)&mbuf);
+ rte_ring_sc_dequeue(vpool->ring, (void *)mbuf);
if (unlikely(mbuf == NULL)) {
struct vhost_virtqueue *vq = dev->virtqueue[VIRTIO_TXQ];
RTE_LOG(ERR, VHOST_DATA,
--
2.5.0
next prev parent reply other threads:[~2015-12-09 12:20 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-12-08 11:23 [PATCH] examples/vhost: fix strict aliasing error on gcc 4.4.7 Pablo de Lara
2015-12-09 9:12 ` Xie, Huawei
2015-12-09 9:39 ` [PATCH v2] " Pablo de Lara
2015-12-09 10:32 ` Bruce Richardson
2015-12-09 10:45 ` Xie, Huawei
2015-12-09 10:52 ` De Lara Guarch, Pablo
2015-12-09 11:09 ` [PATCH v3] " Pablo de Lara
2015-12-09 12:20 ` Pablo de Lara [this message]
2015-12-09 13:28 ` [PATCH v4] Fixes following error on gcc 4.4.7: Xie, Huawei
2015-12-09 14:01 ` De Lara Guarch, Pablo
2015-12-09 14:12 ` Xie, Huawei
2015-12-09 14:26 ` [PATCH v5] examples/vhost: fix strict aliasing error on gcc 4.4.7 Pablo de Lara
2015-12-09 14:33 ` Xie, Huawei
2015-12-09 20:54 ` Thomas Monjalon
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