wcsnrtombs
extern size_t wcsnrtombs(char *dest, const wchar_t **src, size_t srcLength,
B_DEFINE_WEAK_ALIAS(__wcsnrtombs, wcsnrtombs);
ret = wcsnrtombs (NULL, &src, 6, n, NULL);
ret = wcsnrtombs (buf, &src, 6, n, NULL);
ret = wcsnrtombs (NULL, &src, 6, n, NULL);
ret = wcsnrtombs (buf, &src, 6, n, NULL);
ret = wcsnrtombs (NULL, &src, 6, n, NULL);
ret = wcsnrtombs (buf, &src, 6, n, NULL);
ret = wcsnrtombs (NULL, &src, 6, n, NULL);
ret = wcsnrtombs (buf, &src, 6, n, NULL);