posix/bug-getopt3.c

   1 /* BZ 11040 */
   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",  no_argument,       NULL, 'a' },
  10     { "beta",   required_argument, NULL, 'b' },
  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           int out[n])
  17 {
  18   optind = 1;
  19
  20   int res = 0;
  21   for (int i = 0; i < n; ++i)
  22     {
  23       rewind (stderr);
  24       if (ftruncate (fileno (stderr), 0) != 0)
  25         {
  26           puts ("cannot truncate file");
  27           return 1;
  28         }
  29
  30       int c = getopt_long (argc, argv, fmt, opts, NULL);
  31       if (c != expected[i])
  32         {
  33           printf ("format '%s' test %d failed: expected '%c', got '%c'\n",
  34                   fmt, i, expected[i], c);
  35           res = 1;
  36         }
  37       if ((ftell (stderr) != 0) != out[i])
  38         {
  39           printf ("format '%s' test %d failed: %sprinted to stderr\n",
  40                   fmt, i, out[i] ? "not " : "");
  41           res = 1;
  42         }
  43     }
  44
  45   return res;
  46 }
  47
  48
  49 static int
  50 do_test (void)
  51 {
  52   char fname[] = "/tmp/bug-getopt3.XXXXXX";
  53   int fd = mkstemp (fname);
  54   if (fd == -1)
  55     {
  56       printf ("mkstemp failed: %m\n");
  57       return 1;
  58     }
  59   close (fd);
  60
  61   if (freopen (fname, "w+", stderr) == NULL)
  62     {
  63       puts ("cannot redirect stderr");
  64       return 1;
  65     }
  66
  67   remove (fname);
  68
  69   int ret = one_test ("ab:W;", 2,
  70                       (char *[2]) { (char *) "bug-getopt3", (char *) "-a;" },
  71                       2, (int [2]) { 'a', '?' }, (int [2]) { 0, 1 });
  72
  73   ret |= one_test ("ab:W;", 2,
  74                    (char *[2]) { (char *) "bug-getopt3", (char *) "-a:" }, 2,
  75                    (int [2]) { 'a', '?' }, (int [2]) { 0, 1 });
  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"