-char *__asctime_r(const struct tm *, char *);
-struct tm *__gmtime_r(const time_t *restrict, struct tm *restrict);
-struct tm *__localtime_r(const time_t *restrict, struct tm *restrict);
+hidden char *__asctime_r(const struct tm *, char *);
+hidden struct tm *__gmtime_r(const time_t *restrict, struct tm *restrict);
+hidden struct tm *__localtime_r(const time_t *restrict, struct tm *restrict);