1 files changed, 8 insertions, 8 deletions
diff --git a/include/sys/cdefs.h b/include/sys/cdefs.h
index c3bb51c1..0d6f6327 100644
--- a/include/sys/cdefs.h
+++ b/include/sys/cdefs.h
@@ -4,16 +4,16 @@
 #define __BEGIN_DECLS extern "C" {
 #define __END_DECLS   }
 
-#define __dead __attribute__((__noreturn__))
-
-#define __used	 __attribute__((__used__))
-#define __unused __attribute__((__unused__))
-
+#define __dead	     __attribute__((__noreturn__))
+#define __used	     __attribute__((__used__))
+#define __unused     __attribute__((__unused__))
 #define __packed     __attribute__((__packed__))
 #define __aligned(x) __attribute__((__aligned__(x)))
+#define __malloc     __attribute__((__malloc__))
+#define __pure	     __attribute__((__pure__))
+#define __nodiscard  __attribute__((__warn_unused_result__))
 
-#define __malloc __attribute__((__malloc__))
-
-#define __pure __attribute__((__pure__))
+#define __predict_true(exp)  __builtin_expect((exp) != 0, 1)
+#define __predict_false(exp) __builtin_expect((exp) != 0, 0)
 
 #endif