1  #include <locale.h>
       2  #include <wchar.h>
       3  #include <stdio.h>
       4  #include <stdlib.h>
       5  
       6  /* MB_CUR_MAX multibyte ones (6 UTF+0080, in this case) */
       7  static const char string[] = "\
       8  \xc2\x80\xc2\x80\xc2\x80\xc2\x80\xc2\x80\xc2\x80";
       9  
      10  int
      11  main (void)
      12  {
      13    if (setlocale (LC_ALL, "de_DE.UTF-8") == NULL)
      14      {
      15        puts ("cannot set locale");
      16        exit (1);
      17      }
      18  
      19    wchar_t s[7];
      20    int n = sscanf (string, "%l[\x80\xc2]", s);
      21    if (n != 1)
      22      {
      23        printf ("return values %d != 1\n", n);
      24        exit (1);
      25      }
      26  
      27    return 0;
      28  }