c11 safe string handling support

Change-Id: Ied34720ca5a6e6e717eea4e86003e854031b6eab
Signed-off-by: Dave Barach <dave@barachs.net>
diff --git a/src/vnet/bier/bier_test.c b/src/vnet/bier/bier_test.c
index 06160f6..d15ee59 100644
--- a/src/vnet/bier/bier_test.c
+++ b/src/vnet/bier/bier_test.c
@@ -742,7 +742,7 @@
      */
     bier_bit_string_t bbs_256;
     u8 buckets[BIER_HDR_BUCKETS_256];
-    memset(buckets, 0x5, BIER_HDR_BUCKETS_256);
+    clib_memset(buckets, 0x5, BIER_HDR_BUCKETS_256);
 
     res = 0;
     bier_bit_string_init(&bbs_256, BIER_HDR_LEN_256, buckets);