1  /* BZ 11041 */
       2  #include <getopt.h>
       3  #include <unistd.h>
       4  #include <stdio.h>
       5  #include <stdlib.h>
       6  
       7  static const struct option opts[] =
       8    {
       9      { "alpha",    optional_argument, NULL, 'a' },
      10      { NULL,       0,                 NULL, 0 }
      11    };
      12  
      13  static int
      14  one_test (const char *fmt, int argc, char *argv[], int n, int expected[n])
      15  {
      16    optind = 1;
      17  
      18    int res = 0;
      19    for (int i = 0; i < n; ++i)
      20      {
      21        rewind (stderr);
      22        if (ftruncate (fileno (stderr), 0) != 0)
      23  	{
      24  	  puts ("cannot truncate file");
      25  	  return 1;
      26  	}
      27  
      28        int c = getopt_long (argc, argv, fmt, opts, NULL);
      29        if (c != expected[i])
      30  	{
      31  	  printf ("%s: format '%s' test %d failed: expected '%c', got '%c'\n",
      32  		  argv[0], fmt, i, expected[i], c);
      33  	  res = 1;
      34  	}
      35        else if (optarg != NULL)
      36  	{
      37  	  printf ("%s: format '%s' test %d failed: optarg is \"%s\", not NULL\n",
      38  		  argv[0], fmt, i, optarg);
      39  	  res = 1;
      40  	}
      41        if (ftell (stderr) != 0)
      42  	{
      43  	  printf ("%s: format '%s' test %d failed: printed to stderr\n",
      44  		  argv[0], fmt, i);
      45  	  res = 1;
      46  	}
      47      }
      48  
      49    return res;
      50  }
      51  
      52  
      53  static int
      54  do_test (void)
      55  {
      56    char fname[] = "/tmp/bug-getopt4.XXXXXX";
      57    int fd = mkstemp (fname);
      58    if (fd == -1)
      59      {
      60        printf ("mkstemp failed: %m\n");
      61        return 1;
      62      }
      63    close (fd);
      64  
      65    if (freopen (fname, "w+", stderr) == NULL)
      66      {
      67        puts ("cannot redirect stderr");
      68        return 1;
      69      }
      70  
      71    remove (fname);
      72  
      73    int ret = one_test ("W;", 2,
      74  		      (char *[2]) { (char *) "bug-getopt4a", (char *) "--a" },
      75  		      1, (int [1]) { 'a' });
      76  
      77    ret |= one_test ("W;", 3,
      78  		   (char *[3]) { (char *) "bug-getopt4b", (char *) "-W",
      79  				 (char *) "a" },
      80  		   1, (int [1]) { 'a' });
      81  
      82    if (ret == 0)
      83      puts ("all OK");
      84  
      85    return ret;
      86  }
      87  
      88  #define TEST_FUNCTION do_test ()
      89  #include "../test-skeleton.c"