[dpdk-dev] [PATCH v2] service: fix build error "ids uninitialized in rte_service_map_lcore_set"

[Yi Yang]

v1->v2
  - Change title to more descriptive one
  - Add issue reproduce information to git log body

On current master tree, normal DPDK make will result in
the below error:

    error: ‘ids[0]’ may be used uninitialized in this
    function [-Werror=maybe-uninitialized]
    ret = rte_service_map_lcore_set(i, ids[lcore_iter], 1);

It can be reproduced very easily on Fedora 21 with
gcc-4.9.2-6.fc21.x86_64.

It is fixed after applied this patch.

Signed-off-by: Yi Yang <yi.y.yang at intel.com>
---
 lib/librte_eal/common/rte_service.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/librte_eal/common/rte_service.c b/lib/librte_eal/common/rte_service.c
index 43716bb..e598e16 100644
--- a/lib/librte_eal/common/rte_service.c
+++ b/lib/librte_eal/common/rte_service.c
@@ -431,7 +431,7 @@ rte_service_start_with_defaults(void)
 	uint32_t count = rte_service_get_count();
 
 	int32_t lcore_iter = 0;
-	uint32_t ids[RTE_MAX_LCORE];
+	uint32_t ids[RTE_MAX_LCORE] = {0};
 	int32_t lcore_count = rte_service_lcore_list(ids, RTE_MAX_LCORE);
 
 	if (lcore_count == 0)
-- 
2.1.0