posix/bug-getopt5.c

   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     { "a1",    no_argument, NULL, 'a' },
  10     { "a2",    no_argument, NULL, 'a' },
  11     { NULL,    0,           NULL, 0 }
  12   };
  13
  14 static int
  15 one_test (const char *fmt, int argc, char *argv[], int n, int expected[n])
  16 {
  17   optind = 1;
  18
  19   int res = 0;
  20   for (int i = 0; i < n; ++i)
  21     {
  22       rewind (stderr);
  23       if (ftruncate (fileno (stderr), 0) != 0)
  24         {
  25           puts ("cannot truncate file");
  26           return 1;
  27         }
  28
  29       int c = getopt_long (argc, argv, fmt, opts, NULL);
  30       if (c != expected[i])
  31         {
  32           printf ("format '%s' test %d failed: expected '%c', got '%c'\n",
  33                   fmt, i, expected[i], c);
  34           res = 1;
  35         }
  36       if (ftell (stderr) != 0)
  37         {
  38           printf ("format '%s' test %d failed: printed to stderr\n",
  39                   fmt, i);
  40           res = 1;
  41         }
  42     }
  43
  44   return res;
  45 }
  46
  47
  48 static int
  49 do_test (void)
  50 {
  51   char fname[] = "/tmp/bug-getopt5.XXXXXX";
  52   int fd = mkstemp (fname);
  53   if (fd == -1)
  54     {
  55       printf ("mkstemp failed: %m\n");
  56       return 1;
  57     }
  58   close (fd);
  59
  60   if (freopen (fname, "w+", stderr) == NULL)
  61     {
  62       puts ("cannot redirect stderr");
  63       return 1;
  64     }
  65
  66   remove (fname);
  67
  68   int ret = one_test (":W;", 2,
  69                       (char *[2]) { (char *) "bug-getopt5", (char *) "--a" },
  70                       1, (int [1]) { 'a' });
  71
  72   ret |= one_test (":W;", 3,
  73                    (char *[3]) { (char *) "bug-getopt5", (char *) "-W",
  74                                  (char *) "a" },
  75                    1, (int [1]) { 'a' });
  76
  77   if (ret == 0)
  78     puts ("all OK");
  79
  80   return ret;
  81 }
  82
  83 #define TEST_FUNCTION do_test ()
  84 #include "../test-skeleton.c"