Add check for __Static_assert() and asserts on struct sizes

[tinc] / src / ethernet.h

diff --git a/src/ethernet.h b/src/ethernet.h
index 4ef9dab..ddb0a7c 100644 (file)
--- a/src/ethernet.h
+++ b/src/ethernet.h
@@ -68,6 +68,8 @@ struct ether_header {
 };
 #endif
 
+STATIC_ASSERT(sizeof(struct ether_header) == 14, "ether_header has incorrect size");
+
 #ifndef HAVE_STRUCT_ARPHDR
 struct arphdr {
        uint16_t ar_hrd;
@@ -86,6 +88,8 @@ struct arphdr {
 #define ARPOP_NAK 10
 #endif
 
+STATIC_ASSERT(sizeof(struct arphdr) == 8, "arphdr has incorrect size");
+
 #ifndef HAVE_STRUCT_ETHER_ARP
 struct  ether_arp {
        struct  arphdr ea_hdr;
@@ -101,4 +105,6 @@ struct  ether_arp {
 #define arp_op ea_hdr.ar_op
 #endif
 
+STATIC_ASSERT(sizeof(struct ether_arp) == 28, "ether_arp has incorrect size");
+
 #endif