[PATCH 02/16] hash: remove use of VLAs for Windows built code

[Tyler Retzlaff]

MSVC does not support VLAs, replace VLAs with standard C arrays
or alloca(). alloca() is available for all toolchain/platform
combinations officially supported by DPDK.

Signed-off-by: Tyler Retzlaff <roretzla at linux.microsoft.com>
---
 lib/hash/rte_cuckoo_hash.c | 4 ++--
 lib/hash/rte_thash.c       | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/lib/hash/rte_cuckoo_hash.c b/lib/hash/rte_cuckoo_hash.c
index 9cf9464..bd2ff08 100644
--- a/lib/hash/rte_cuckoo_hash.c
+++ b/lib/hash/rte_cuckoo_hash.c
@@ -2359,7 +2359,7 @@ struct rte_hash *
 			(num_keys > RTE_HASH_LOOKUP_BULK_MAX) ||
 			(hit_mask == NULL)), -EINVAL);
 
-	int32_t positions[num_keys];
+	int32_t *positions = alloca(sizeof(int32_t) * num_keys);
 
 	__rte_hash_lookup_bulk(h, keys, num_keys, positions, hit_mask, data);
 
@@ -2475,7 +2475,7 @@ struct rte_hash *
 			(num_keys > RTE_HASH_LOOKUP_BULK_MAX) ||
 			(hit_mask == NULL)), -EINVAL);
 
-	int32_t positions[num_keys];
+	int32_t *positions = alloca(sizeof(int32_t) * num_keys);
 
 	__rte_hash_lookup_with_hash_bulk(h, keys, sig, num_keys,
 			positions, hit_mask, data);
diff --git a/lib/hash/rte_thash.c b/lib/hash/rte_thash.c
index 68f653f..633e211 100644
--- a/lib/hash/rte_thash.c
+++ b/lib/hash/rte_thash.c
@@ -771,7 +771,7 @@ struct rte_thash_subtuple_helper *
 	uint32_t desired_value,	unsigned int attempts,
 	rte_thash_check_tuple_t fn, void *userdata)
 {
-	uint32_t tmp_tuple[tuple_len / sizeof(uint32_t)];
+	uint32_t *tmp_tuple = alloca(tuple_len);
 	unsigned int i, j, ret = 0;
 	uint32_t hash, adj_bits;
 	const uint8_t *hash_key;
-- 
1.8.3.1