[dpdk-dev] [PATCH v4 05/10] app/test: clean LTO build warnings (maybe-uninitialized)

[Andrzej Ostruszka]

During LTO build compiler reports some 'false positive' warnings about
variables being possibly used uninitialized.  This patch silences these
warnings.

Exemplary compiler warning to suppress (with LTO enabled):
error: ‘stats.greatest_free_size’ may be used uninitialized in this
function [-Werror=maybe-uninitialized]
  return len - overhead;

Signed-off-by: Andrzej Ostruszka <aostruszka at marvell.com>
---
 app/test/test_hash_readwrite.c     |  2 +-
 app/test/test_link_bonding_mode4.c | 10 ++++++++--
 app/test/test_memzone.c            |  3 ++-
 3 files changed, 11 insertions(+), 4 deletions(-)

diff --git a/app/test/test_hash_readwrite.c b/app/test/test_hash_readwrite.c
index 4376b099b..615767fb6 100644
--- a/app/test/test_hash_readwrite.c
+++ b/app/test/test_hash_readwrite.c
@@ -298,7 +298,7 @@ test_rw_reader(void *arg)
 
 	begin = rte_rdtsc_precise();
 	for (i = 0; i < read_cnt; i++) {
-		void *data;
+		void *data = arg;
 		rte_hash_lookup_data(tbl_rw_test_param.h,
 				tbl_rw_test_param.keys + i,
 				&data);
diff --git a/app/test/test_link_bonding_mode4.c b/app/test/test_link_bonding_mode4.c
index bbb4e9cce..5f7df1b5e 100644
--- a/app/test/test_link_bonding_mode4.c
+++ b/app/test/test_link_bonding_mode4.c
@@ -224,7 +224,7 @@ configure_ethdev(uint16_t port_id, uint8_t start)
 static int
 add_slave(struct slave_conf *slave, uint8_t start)
 {
-	struct rte_ether_addr addr, addr_check;
+	struct rte_ether_addr addr, addr_check = { { 0 } };
 
 	/* Some sanity check */
 	RTE_VERIFY(test_params.slave_ports <= slave &&
@@ -578,7 +578,13 @@ bond_get_update_timeout_ms(void)
 {
 	struct rte_eth_bond_8023ad_conf conf;
 
-	rte_eth_bond_8023ad_conf_get(test_params.bonded_port_id, &conf);
+	if (rte_eth_bond_8023ad_conf_get(test_params.bonded_port_id, &conf) < 0) {
+		RTE_LOG(DEBUG, EAL, "Failed to get bonding configuration: "
+				    "%s at %d\n", __func__, __LINE__);
+		RTE_TEST_TRACE_FAILURE(__FILE__, __LINE__, __func__);
+		return 0;
+	}
+
 	return conf.update_timeout_ms;
 }
 
diff --git a/app/test/test_memzone.c b/app/test/test_memzone.c
index 7501b63c5..c284dcb44 100644
--- a/app/test/test_memzone.c
+++ b/app/test/test_memzone.c
@@ -476,7 +476,8 @@ find_max_block_free_size(unsigned int align, unsigned int socket_id)
 	struct rte_malloc_socket_stats stats;
 	size_t len, overhead;
 
-	rte_malloc_get_socket_stats(socket_id, &stats);
+	if (rte_malloc_get_socket_stats(socket_id, &stats) < 0)
+		return 0;
 
 	len = stats.greatest_free_size;
 	overhead = MALLOC_ELEM_OVERHEAD;
-- 
2.17.1