1: #define _XOPEN_SOURCE 500
    2: #include <stdio.h>
    3: #include <stdlib.h>
    4: #include <locale.h>
    5: #include <wchar.h>
    6: 
    7: const char write_chars[] = "ABC";      /* Characters on testfile. */
    8: const wint_t unget_wchar = L'A';      /* Ungotten wide character. */
    9: 
   10: char *fname;
   11: 
   12: 
   13: static int do_test (void);
   14: #define TEST_FUNCTION do_test ()
   15: 
   16: #include "../test-skeleton.c"
   17: 
   18: 
   19: static int
   20: do_test (void)
   21: {
   22:   wint_t wc;
   23:   FILE *fp;
   24:   int fd;
   25: 
   26:   fname = (char *) malloc (strlen (test_dir) + sizeof "/bug-ungetwc1.XXXXXX");
   27:   if (fname == NULL)
   28:     {
   29:       puts ("no memory");
   30:       return 1;
   31:     }
   32:   strcpy (stpcpy (fname, test_dir), "/bug-ungetwc1.XXXXXX");
   33:   fd = mkstemp (fname);
   34:   if (fd == -1)
   35:     {
   36:       printf ("cannot open temporary file: %m\n");
   37:       return 1;
   38:     }
   39:   add_temp_file (fname);
   40: 
   41:   setlocale(LC_ALL, "");
   42: 
   43:   /* Output to the file. */
   44:   if ((fp = fdopen (fd, "w")) == NULL)
   45:     {
   46:       fprintf (stderr, "Cannot make `%s' file\n", fname);
   47:       exit (EXIT_FAILURE);
   48:     }
   49: 
   50:   fprintf (fp, "%s", write_chars);
   51:   fclose (fp);
   52: 
   53:   /* Read from the file. */
   54:   fp = fopen (fname, "r");
   55: 
   56:   while (!feof (fp))
   57:     wc = getwc (fp);
   58:   printf ("\nThe end-of-file indicator is set.\n");
   59: 
   60:   /* Unget a wide character. */
   61:   ungetwc (unget_wchar, fp);
   62:   printf ("< `%lc' is ungotten.\n", unget_wchar);
   63: 
   64:   /* Check the end-of-file indicator. */
   65:   if (feof (fp))
   66:     printf ("The end-of-file indicator is still set.\n");
   67:   else
   68:     printf ("The end-of-file flag is cleared.\n");
   69: 
   70:   fflush (stdout);
   71:   fclose (fp);
   72: 
   73:   return 0;
   74: }