wcsrtombs
extern size_t wcsrtombs(char *dest, const wchar_t **src, size_t destLength,
extern size_t wcsrtombs (char *__restrict __dst,
B_DEFINE_WEAK_ALIAS(__wcsrtombs, wcsrtombs);
ret = wcsrtombs (NULL, &src, n, NULL);
ret = wcsrtombs (buf, &src, n, NULL);
ret = wcsrtombs (NULL, &src, n, NULL);
ret = wcsrtombs (buf, &src, n, NULL);
ret = wcsrtombs(buf, &src, BUFSIZE, NULL);
ret = wcsrtombs (NULL, &src, n, NULL);
ret = wcsrtombs (buf, &src, n, NULL);
ret = wcsrtombs (NULL, &src, n, NULL);
ret = wcsrtombs (buf, &src, n, NULL);
ret = wcsrtombs (NULL, &src, n, NULL);
ret = wcsrtombs (buf, &src, n, NULL);
ret = wcsrtombs(buf, &src, BUFSIZE, NULL);