1: #include <stdio.h>
    2: #include <wchar.h>
    3: 
    4: #define PASSED  0
    5: #define FAILED  3
    6: 
    7: 
    8: static int fd;
    9: 
   10: static void prepare (void);
   11: #define PREPARE(argc, argv) prepare ()
   12: 
   13: 
   14: #define TEST_FUNCTION do_test ()
   15: static int do_test (void);
   16: #include "../test-skeleton.c"
   17: 
   18: 
   19: static void
   20: prepare (void)
   21: {
   22:   fd = create_temp_file ("wrewind.", NULL);
   23:   if (fd == -1)
   24:     exit (3);
   25: }
   26: 
   27: 
   28: static int
   29: do_test (void)
   30: {
   31:   FILE *fptr;
   32:   char arg1;
   33:   char arg2;
   34:   int ret1, ret2, result, num;
   35: 
   36:   ret1 = 0;
   37:   ret2 = 0;
   38: 
   39:   fptr = fdopen (fd, "w+");
   40:   if (fptr == NULL)
   41:     {
   42:       printf ("Unable to open file.\n");
   43:       return 1;
   44:     }
   45: 
   46:   if (fwprintf (fptr, L"cderf") <= 0)
   47:     {
   48:       printf ("Unable to write to file with fwprintf().\n");
   49:       fclose (fptr);
   50:       return 2;
   51:     }
   52: 
   53:   rewind (fptr);
   54:   ret1 = fwscanf (fptr, L"%c%c", &arg1, &arg2);
   55: 
   56:   rewind (fptr);
   57:   ret2 = fwscanf (fptr, L"%c%n%c", &arg1, &num, &arg2);
   58: 
   59:   if (arg2 != 'd')
   60:     {
   61:       result = FAILED;
   62:       printf ("rewind after first fwscanf failed\n");
   63:     }
   64:   else
   65:     {
   66:       printf ("Passed\n");
   67:       result = PASSED;
   68:     }
   69: 
   70: 
   71:   fclose (fptr);
   72:   return result;
   73: }