#endif
static inline void barrier (void)
{
-#if defined (__GNUC__) && (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 1)
+#if defined (__GNUC__) && \
+ ((__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 1))
__sync_synchronize ();
#elif defined(__APPLE__)
OSMemoryBarrier ();