#define APT_PURE __attribute__((pure))
#define APT_NORETURN __attribute__((noreturn))
#define APT_PRINTF(n) __attribute__((format(printf, n, n + 1)))
#define APT_PURE __attribute__((pure))
#define APT_NORETURN __attribute__((noreturn))
#define APT_PRINTF(n) __attribute__((format(printf, n, n + 1)))