libbb: introduce kernel-style BUILD_BUG_ON()

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

1 files changed, 5 insertions, 10 deletions

diff --git a/runit/runsv.c b/runit/runsv.c
index 94d286059..6cf5bcc29 100644
--- a/runit/runsv.c
+++ b/runit/runsv.c
@@ -49,16 +49,11 @@ static void gettimeofday_ns(struct timespec *ts)
 #else
 static void gettimeofday_ns(struct timespec *ts)
 {
-        if (sizeof(struct timeval) == sizeof(struct timespec)
-         && sizeof(((struct timeval*)ts)->tv_usec) == sizeof(ts->tv_nsec)
-        ) {
-                /* Cheat */
-                gettimeofday((void*)ts, NULL);
-                ts->tv_nsec *= 1000;
-        } else {
-                extern void BUG_need_to_implement_gettimeofday_ns(void);
-                BUG_need_to_implement_gettimeofday_ns();
-        }
+        BUILD_BUG_ON(sizeof(struct timeval) != sizeof(struct timespec));
+        BUILD_BUG_ON(sizeof(((struct timeval*)ts)->tv_usec) != sizeof(ts->tv_nsec));
+        /* Cheat */
+        gettimeofday((void*)ts, NULL);
+        ts->tv_nsec *= 1000;
 }
 #endif