1537     const intern_type* fend = frm;  in do_out()  local
1538     for (; fend != frm_end; ++fend)  in do_out()
1539         if (*fend == 0)  in do_out()
1547         size_t n = __libcpp_wcsnrtombs_l(to, &frm_nxt, static_cast<size_t>(fend-frm),  in do_out()
1567         if (fend != frm_end)  // set up next null terminated sequence  in do_out()
1580             for (fend = frm_nxt; fend != frm_end; ++fend)  in do_out()
1581                 if (*fend == 0)  in do_out()
1594     const extern_type* fend = frm;  in do_in()  local
1595     for (; fend != frm_end; ++fend)  in do_in()
1596         if (*fend == 0)  in do_in()
1604         size_t n = __libcpp_mbsnrtowcs_l(to, &frm_nxt, static_cast<size_t>(fend-frm),  in do_in()
1611                 n = __libcpp_mbrtowc_l(to_nxt, frm, static_cast<size_t>(fend-frm),  in do_in()
1637         if (fend != frm_end)  // set up next null terminated sequence  in do_in()
1646             for (fend = frm_nxt; fend != frm_end; ++fend)  in do_in()
1647                 if (*fend == 0)  in do_in()