ext/libuv/include/pthread-barrier.h in libuv-2.0.12 vs ext/libuv/include/pthread-barrier.h in libuv-3.0.0

@@ -37,9 +37,11 @@
 # define UV_BARRIER_STRUCT_PADDING \
   sizeof(pthread_mutex_t) + \
   2 * sizeof(sem_t) + \
   2 * sizeof(unsigned int) - \
   sizeof(void *)
+#else
+# define UV_BARRIER_STRUCT_PADDING 0
 #endif
 
 typedef struct {
   pthread_mutex_t  mutex;
   pthread_cond_t   cond;