[dpdk-dev] [PATCH v6 07/12] 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 <aostrus...@marvell.com>
---
 app/test/test_hash_readwrite.c     | 2 +-
 app/test/test_link_bonding_mode4.c | 8 +++++++-
 app/test/test_memzone.c            | 3 ++-
 3 files changed, 10 insertions(+), 3 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 ff54d7b91..cf12f026d 100644
--- a/app/test/test_link_bonding_mode4.c
+++ b/app/test/test_link_bonding_mode4.c
@@ -585,7 +585,13 @@ 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 4d8744455..0343b0326 100644
--- a/app/test/test_memzone.c
+++ b/app/test/test_memzone.c
@@ -475,7 +475,8 @@ 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