ORIENT
# define ORIENT if (_IO_vtable_offset (s) == 0 && _IO_fwide (s, -1) != -1)\
# define ORIENT if (_IO_fwide (s, 1) != 1) return -1
# define ORIENT if (_IO_fwide (s, 1) != 1) return WEOF
# define ORIENT if (_IO_vtable_offset (s) == 0 \