acl: fix undefined behavior of bit shifts

[dpdk.git] / lib / librte_acl / acl_gen.c

diff --git a/lib/librte_acl/acl_gen.c b/lib/librte_acl/acl_gen.c
index 35a0140..f1b9d12 100644 (file)
--- a/lib/librte_acl/acl_gen.c
+++ b/lib/librte_acl/acl_gen.c
@@ -133,7 +133,7 @@ acl_node_fill_dfa(const struct rte_acl_node *node,
                for (n = 0; n < RTE_ACL_DFA_SIZE; n++) {
 
                        if (bits->bits[n / (sizeof(bits_t) * CHAR_BIT)] &
-                               (1 << (n % (sizeof(bits_t) * CHAR_BIT)))) {
+                               (1U << (n % (sizeof(bits_t) * CHAR_BIT)))) {
 
                                dfa[n] = resolved ? child->node_index : x;
                                ranges += (last_bit == 0);
@@ -175,7 +175,7 @@ acl_count_sequential_groups(struct rte_acl_bitset *bits, int zero_one)
        }
        for (n = 0; n < QRANGE_MIN; n++) {
                if (bits->bits[n / (sizeof(bits_t) * 8)] &
-                               (1 << (n % (sizeof(bits_t) * 8)))) {
+                               (1U << (n % (sizeof(bits_t) * CHAR_BIT)))) {
                        if (zero_one == 1 && last_bit != 1)
                                ranges++;
                        last_bit = 1;