int sd_bus_message_new_method_call(sd_bus *bus, const char *destination, const char *path, const char *interface, const char *member, sd_bus_message **m);
int sd_bus_message_new_method_return(sd_bus_message *call, sd_bus_message **m);
int sd_bus_message_new_method_error(sd_bus_message *call, const sd_bus_error *e, sd_bus_message **m);
-int sd_bus_message_new_method_errorf(sd_bus_message *call, sd_bus_message **m, const char *name, const char *format, ...) _sd_printf_(4, 0);
+int sd_bus_message_new_method_errorf(sd_bus_message *call, sd_bus_message **m, const char *name, const char *format, ...) _sd_printf_(4, 5);
int sd_bus_message_new_method_errno(sd_bus_message *call, int error, const sd_bus_error *e, sd_bus_message **m);
-int sd_bus_message_new_method_errnof(sd_bus_message *call, sd_bus_message **m, int error, const char *format, ...) _sd_printf_(4, 0);
+int sd_bus_message_new_method_errnof(sd_bus_message *call, sd_bus_message **m, int error, const char *format, ...) _sd_printf_(4, 5);
sd_bus_message* sd_bus_message_ref(sd_bus_message *m);
sd_bus_message* sd_bus_message_unref(sd_bus_message *m);
int sd_bus_reply_method_return(sd_bus_message *call, const char *types, ...);
int sd_bus_reply_method_error(sd_bus_message *call, const sd_bus_error *e);
-int sd_bus_reply_method_errorf(sd_bus_message *call, const char *name, const char *format, ...) _sd_printf_(3, 0);
+int sd_bus_reply_method_errorf(sd_bus_message *call, const char *name, const char *format, ...) _sd_printf_(3, 4);
int sd_bus_reply_method_errno(sd_bus_message *call, int error, const sd_bus_error *e);
-int sd_bus_reply_method_errnof(sd_bus_message *call, int error, const char *format, ...) _sd_printf_(3, 0);
+int sd_bus_reply_method_errnof(sd_bus_message *call, int error, const char *format, ...) _sd_printf_(3, 4);
int sd_bus_emit_signal(sd_bus *bus, const char *path, const char *interface, const char *member, const char *types, ...);
void sd_bus_error_free(sd_bus_error *e);
int sd_bus_error_set(sd_bus_error *e, const char *name, const char *message);
-int sd_bus_error_setf(sd_bus_error *e, const char *name, const char *format, ...) _sd_printf_(3, 0);
+int sd_bus_error_setf(sd_bus_error *e, const char *name, const char *format, ...) _sd_printf_(3, 4);
int sd_bus_error_set_const(sd_bus_error *e, const char *name, const char *message);
int sd_bus_error_set_errno(sd_bus_error *e, int error);
-int sd_bus_error_set_errnof(sd_bus_error *e, int error, const char *format, ...) _sd_printf_(3, 0);
+int sd_bus_error_set_errnof(sd_bus_error *e, int error, const char *format, ...) _sd_printf_(3, 4);
int sd_bus_error_get_errno(const sd_bus_error *e);
int sd_bus_error_copy(sd_bus_error *dest, const sd_bus_error *e);
int sd_bus_error_is_set(const sd_bus_error *e);