@@ -39,10 +39,16 @@
 # define OF_INLINE inline
 # define OF_LIKELY(cond) cond
 # define OF_UNLIKELY(cond) cond
 # define OF_CONST_FUNC
 #endif
+
+#if defined(__GNUC__)
+# define restrict __restrict__
+#elif __STDC_VERSION__ < 199901L
+# define restrict
+#endif
 
 /* Required to build universal binaries on OS X */
 #if __BIG_ENDIAN__ || __LITTLE_ENDIAN__
 # if __BIG_ENDIAN__ && __LITTLE_ENDIAN__
 #  error __BIG_ENDIAN__ and __LITTLE_ENDIAN__ defined!