net: fix build with gcc 4.4.7 and strict aliasing

[dpdk.git] / lib / librte_net / rte_ip.h

diff --git a/lib/librte_net/rte_ip.h b/lib/librte_net/rte_ip.h
index 61e4457..46f0497 100644 (file)
--- a/lib/librte_net/rte_ip.h
+++ b/lib/librte_net/rte_ip.h
@@ -154,7 +154,9 @@ struct ipv4_hdr {
 static inline uint16_t
 rte_raw_cksum(const char *buf, size_t len)
 {
-       const uint16_t *u16 = (const uint16_t *)buf;
+       /* workaround gcc strict-aliasing warning */
+       uintptr_t ptr = (uintptr_t)buf;
+       const uint16_t *u16 = (const uint16_t *)ptr;
        uint32_t sum = 0;
 
        while (len >= (sizeof(*u16) * 4)) {