#define ____cacheline_aligned
#define __NORETURN __attribute__((__noreturn__))
-#if !defined(fallthrough) && !defined(_LIBCPP_VERSION)
+#if !defined(zfs_fallthrough) && !defined(_LIBCPP_VERSION)
#if defined(HAVE_IMPLICIT_FALLTHROUGH)
-#define fallthrough __attribute__((__fallthrough__))
+#define zfs_fallthrough __attribute__((__fallthrough__))
#else
-#define fallthrough ((void)0)
+#define zfs_fallthrough ((void)0)
#endif
#endif