wcsnrtombs
size_t wcsnrtombs(char * __restrict, const wchar_t ** __restrict, size_t,
PROTO_NORMAL(wcsnrtombs);
bufsize = wcsnrtombs(NULL, &s, size, 0, &st);
size_converted = wcsnrtombs(buf, &s, size, bufsize, &st);
return (wcsnrtombs(dst, src, SIZE_MAX, len, ps));
DEF_WEAK(wcsnrtombs);