libbb: introduce kernel-style BUILD_BUG_ON()

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 2 insertions, 6 deletions

diff --git a/networking/ping.c b/networking/ping.c
index dcbf19682..0eb1ae799 100644
--- a/networking/ping.c
+++ b/networking/ping.c
@@ -396,10 +396,8 @@ struct globals {
 #define dotted       (G.dotted      )
 #define pingaddr     (G.pingaddr    )
 #define rcvd_tbl     (G.rcvd_tbl    )
-void BUG_ping_globals_too_big(void);
 #define INIT_G() do { \
-        if (sizeof(G) > COMMON_BUFSIZE) \
-                BUG_ping_globals_too_big(); \
+        BUILD_BUG_ON(sizeof(G) > COMMON_BUFSIZE); \
         datalen = DEFDATALEN; \
         timeout = MAXWAIT; \
         tmin = UINT_MAX; \
@@ -732,7 +730,6 @@ static void ping4(len_and_sockaddr *lsa)
         }
 }
 #if ENABLE_PING6
-extern int BUG_bad_offsetof_icmp6_cksum(void);
 static void ping6(len_and_sockaddr *lsa)
 {
         int sockopt;
@@ -769,8 +766,7 @@ static void ping6(len_and_sockaddr *lsa)
         setsockopt_SOL_SOCKET_int(pingsock, SO_RCVBUF, sockopt);
 
         sockopt = offsetof(struct icmp6_hdr, icmp6_cksum);
-        if (offsetof(struct icmp6_hdr, icmp6_cksum) != 2)
-                BUG_bad_offsetof_icmp6_cksum();
+        BUILD_BUG_ON(offsetof(struct icmp6_hdr, icmp6_cksum) != 2);
         setsockopt_int(pingsock, SOL_RAW, IPV6_CHECKSUM, sockopt);
 
         /* request ttl info to be returned in ancillary data */