Add unused attribute abbreviation.
@@ -29,6 +29,7 @@ typedef uint32_t ino_t;
/* Wrapper for various GCC attributes */
#define __nonnull(x) __attribute__((__nonnull__(x)))
#define __section(s) __attribute__((__section__(#s)))
+#define __unused __attribute__((unused))
#define __used __attribute__((used))
/* Macros for counting and rounding. */
