_IO_vfwscanf
ret = _IO_vfwscanf ((_IO_FILE *) &sf._sbf, format, args, NULL);
extern int _IO_vfwscanf (_IO_FILE * __restrict, const wchar_t * __restrict,
return _IO_vfwscanf (_IO_stdin, format, args, NULL);
done = _IO_vfwscanf (stdin, format, arg, NULL);
return _IO_vfwscanf (s, format, argptr, NULL);