time_t_int_add_ok  532 lib/mktime.c             if (time_t_int_add_ok (t, delta * direction))
time_t_int_add_ok  556 lib/mktime.c         if (! time_t_int_add_ok (t, sec_requested))
time_t_int_add_ok  559 lib/mktime.c         if (! time_t_int_add_ok (t1, sec_adjustment))