-static inline ssize_t splice(int fd_in, loff_t *off_in, int fd_out, loff_t *off_out,
- size_t len, unsigned int flags)
+static inline ssize_t splice(
+ int fd_in __attribute__((unused)),
+ loff_t *off_in __attribute__((unused)),
+ int fd_out __attribute__((unused)),
+ loff_t *off_out __attribute__((unused)),
+ size_t len __attribute__((unused)),
+ unsigned int flags __attribute__((unused)))