#define tMPI_Atomic_memory_barrier() __asm__ __volatile__("sfence;" : : : "memory")
#else
/* MIC is in-order and does not need nor support sfense */
-#define tMPI_Atomic_memory_barrier() __asm__ __volatile__("":::"memory")
+#define tMPI_Atomic_memory_barrier() __asm__ __volatile__("" ::: "memory")
#endif
#define TMPI_ATOMIC_HAVE_NATIVE_FETCH_ADD