use STATIC_ASSERT macro instead of calling _Static_assert directly

Change-Id: Iccae655334b6219d22c325108b0e7f37d1dd68cf
Signed-off-by: Damjan Marion <damarion@cisco.com>

9 files changed, 26 insertions, 22 deletions

diff --git a/vnet/vnet/dpo/dpo.h b/vnet/vnet/dpo/dpo.h
index 2ab936e5f00..9065f88daae 100644
--- a/vnet/vnet/dpo/dpo.h
+++ b/vnet/vnet/dpo/dpo.h
@@ -154,9 +154,9 @@ typedef struct dpo_id_t_ {
     index_t dpoi_index;
 } __attribute__ ((aligned(sizeof(u64)))) dpo_id_t;
 
-_Static_assert(sizeof(dpo_id_t) <= sizeof(u64),
-	       "DPO ID is greater than sizeof u64 "
-	       "atomic updates need to be revisited");
+STATIC_ASSERT(sizeof(dpo_id_t) <= sizeof(u64),
+	      "DPO ID is greater than sizeof u64 "
+	      "atomic updates need to be revisited");
 
 /**
  * @brief An initialiser for DPos declared on the stack.
diff --git a/vnet/vnet/dpo/load_balance.h b/vnet/vnet/dpo/load_balance.h
index 4bf3ecffc26..dc6485e688a 100644
--- a/vnet/vnet/dpo/load_balance.h
+++ b/vnet/vnet/dpo/load_balance.h
@@ -135,8 +135,8 @@ typedef struct load_balance_t_ {
     dpo_id_t lb_buckets_inline[LB_NUM_INLINE_BUCKETS];
 } load_balance_t;
 
-_Static_assert(sizeof(load_balance_t) <= CLIB_CACHE_LINE_BYTES,
-	       "A load_balance object size exceeds one cachline");
+STATIC_ASSERT(sizeof(load_balance_t) <= CLIB_CACHE_LINE_BYTES,
+	      "A load_balance object size exceeds one cachline");
 
 /**
  * Flags controlling load-balance formatting/display
diff --git a/vnet/vnet/fib/fib_entry.h b/vnet/vnet/fib/fib_entry.h
index 2b7ea636acb..39b2083ea9a 100644
--- a/vnet/vnet/fib/fib_entry.h
+++ b/vnet/vnet/fib/fib_entry.h
@@ -120,8 +120,8 @@ typedef enum fib_source_t_ {
     FIB_SOURCE_LAST = FIB_SOURCE_DEFAULT_ROUTE,
 } __attribute__ ((packed)) fib_source_t;
 
-_Static_assert (sizeof(fib_source_t) == 1,
-		"FIB too many sources");
+STATIC_ASSERT (sizeof(fib_source_t) == 1,
+	       "FIB too many sources");
 
 /**
  * The maximum number of sources
@@ -260,8 +260,8 @@ typedef enum fib_entry_src_flag_t_ {
  * Keep the size of the flags field to 2 bytes, so it
  * can be placed next to the 2 bytes reference count
  */
-_Static_assert (sizeof(fib_entry_src_flag_t) <= 2,
-		"FIB entry flags field size too big");
+STATIC_ASSERT (sizeof(fib_entry_src_flag_t) <= 2,
+	       "FIB entry flags field size too big");
 
 /**
  * Information related to the source of a FIB entry
diff --git a/vnet/vnet/fib/fib_node.h b/vnet/vnet/fib/fib_node.h
index 253c42dd777..c820546bcc2 100644
--- a/vnet/vnet/fib/fib_node.h
+++ b/vnet/vnet/fib/fib_node.h
@@ -123,8 +123,8 @@ typedef enum fib_node_bw_reason_flag_t_ {
     FIB_NODE_BW_REASON_FLAG_ADJ_UPDATE = (1 << FIB_NODE_BW_REASON_ADJ_UPDATE),
 } __attribute__ ((packed)) fib_node_bw_reason_flag_t;
 
-_Static_assert(sizeof(fib_node_bw_reason_flag_t) < 2,
-	       "BW Reason enum < 2 byte. Consequences for cover_upd_res_t");
+STATIC_ASSERT(sizeof(fib_node_bw_reason_flag_t) < 2,
+	      "BW Reason enum < 2 byte. Consequences for cover_upd_res_t");
 
 /**
  * Forward eclarations
diff --git a/vnet/vnet/fib/fib_types.h b/vnet/vnet/fib/fib_types.h
index 0bc17d6006c..ea5a6d8cae1 100644
--- a/vnet/vnet/fib/fib_types.h
+++ b/vnet/vnet/fib/fib_types.h
@@ -184,8 +184,8 @@ typedef struct fib_prefix_t_ {
     };
 } fib_prefix_t;
 
-_Static_assert(STRUCT_OFFSET_OF(fib_prefix_t, fp_addr) == 4,
-	       "FIB Prefix's address is 4 byte aligned.");
+STATIC_ASSERT(STRUCT_OFFSET_OF(fib_prefix_t, fp_addr) == 4,
+	      "FIB Prefix's address is 4 byte aligned.");
 
 /**
  * \brief Compare two prefixes for equality
diff --git a/vnet/vnet/ip/ip4_mtrie.h b/vnet/vnet/ip/ip4_mtrie.h
index c49937d6814..4771be43e3f 100644
--- a/vnet/vnet/ip/ip4_mtrie.h
+++ b/vnet/vnet/ip/ip4_mtrie.h
@@ -115,8 +115,8 @@ typedef struct {
 	 - 1 * sizeof (i32)];
 } ip4_fib_mtrie_ply_t;
 
-_Static_assert(0  == sizeof(ip4_fib_mtrie_ply_t) % CLIB_CACHE_LINE_BYTES,
-	       "IP4 Mtrie ply cache line");
+STATIC_ASSERT(0  == sizeof(ip4_fib_mtrie_ply_t) % CLIB_CACHE_LINE_BYTES,
+	      "IP4 Mtrie ply cache line");
 
 typedef struct {
   /* Pool of plies.  Index zero is root ply. */
diff --git a/vnet/vnet/ip/lookup.h b/vnet/vnet/ip/lookup.h
index c1d8d204ef9..239ca6818be 100644
--- a/vnet/vnet/ip/lookup.h
+++ b/vnet/vnet/ip/lookup.h
@@ -256,11 +256,11 @@ typedef struct ip_adjacency_t_ {
   fib_node_t ia_node;
 } ip_adjacency_t;
 
-_Static_assert((STRUCT_OFFSET_OF(ip_adjacency_t, cacheline0) == 0),
-	       "IP adjacency cachline 0 is not offset");
-_Static_assert((STRUCT_OFFSET_OF(ip_adjacency_t, cacheline1) ==
-		CLIB_CACHE_LINE_BYTES),
-	       "IP adjacency cachline 1 is more than one cachline size offset");
+STATIC_ASSERT((STRUCT_OFFSET_OF(ip_adjacency_t, cacheline0) == 0),
+	      "IP adjacency cachline 0 is not offset");
+STATIC_ASSERT((STRUCT_OFFSET_OF(ip_adjacency_t, cacheline1) ==
+	       CLIB_CACHE_LINE_BYTES),
+	      "IP adjacency cachline 1 is more than one cachline size offset");
 
 /* An all zeros address */
 extern const ip46_address_t zero_addr;
diff --git a/vnet/vnet/map/map.h b/vnet/vnet/map/map.h
index b76891b69b3..f446b739a93 100644
--- a/vnet/vnet/map/map.h
+++ b/vnet/vnet/map/map.h
@@ -110,8 +110,8 @@ typedef struct
   u8 ip4_prefix_len;
 } map_domain_t;
 
-_Static_assert ((sizeof (map_domain_t) <= CLIB_CACHE_LINE_BYTES),
-		"MAP domain fits in one cacheline");
+STATIC_ASSERT ((sizeof (map_domain_t) <= CLIB_CACHE_LINE_BYTES),
+	       "MAP domain fits in one cacheline");
 
 #define MAP_REASS_INDEX_NONE ((u16)0xffff)
 
diff --git a/vppinfra/vppinfra/error_bootstrap.h b/vppinfra/vppinfra/error_bootstrap.h
index ad600621eae..b03ec88049a 100644
--- a/vppinfra/vppinfra/error_bootstrap.h
+++ b/vppinfra/vppinfra/error_bootstrap.h
@@ -79,7 +79,11 @@ do {							\
     }							\
 } while (0)
 
+#if defined(__clang__)
+#define STATIC_ASSERT(truth,...)
+#else
 #define STATIC_ASSERT(truth,...) _Static_assert(truth, __VA_ARGS__)
+#endif
 
 /* Assert without allocating memory. */
 #define ASSERT_AND_PANIC(truth)			\