#if __GNUC__ >= 3
# define inline inline __attribute__ ((always_inline))
-# define __pure __attribute__ ((pure))
# define __noreturn __attribute__ ((noreturn))
# define __malloc __attribute__ ((malloc))
# define __used __attribute__ ((used))
-# define __unused __attribute__ ((unused))
+# define __a_unused __attribute__ ((unused))
# define __packed __attribute__ ((packed))
# define likely(x) __builtin_expect (!!(x), 1)
# define unlikely(x) __builtin_expect (!!(x), 0)
#else
# define inline /* no inline */
-# define __pure /* no pure */
# define __noreturn /* no noreturn */
# define __malloc /* no malloc */
# define __used /* no used */
-# define __unused /* no unused */
+# define __a__unused /* no unused */
# define __packed /* no packed */
# define likely(x) (x)
# define unlikely(x) (x)