posix/bug-getopt3.c

   1 /* BZ 11040 */
   2 #include <getopt.h>
   3 #include <unistd.h>
   4 #include <stdio.h>
   5
   6 static const struct option opts[] =
   7   {
   8     { "alpha",  no_argument,       NULL, 'a' },
   9     { "beta",   required_argument, NULL, 'b' },
  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           int out[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) != out[i])
  37         {
  38           printf ("format '%s' test %d failed: %sprinted to stderr\n",
  39                   fmt, i, out[i] ? "not " : "");
  40           res = 1;
  41         }
  42     }
  43
  44   return res;
  45 }
  46
  47
  48 static int
  49 do_test (void)
  50 {
  51   char *fname = tmpnam (NULL);
  52   if (fname == NULL)
  53     {
  54       puts ("cannot generate name for temporary file");
  55       return 1;
  56     }
  57
  58   if (freopen (fname, "w+", stderr) == NULL)
  59     {
  60       puts ("cannot redirect stderr");
  61       return 1;
  62     }
  63
  64   remove (fname);
  65
  66   int ret = one_test ("ab:W;", 2,
  67                       (char *[2]) { (char *) "bug-getopt3", (char *) "-a;" },
  68                       2, (int [2]) { 'a', '?' }, (int [2]) { 0, 1 });
  69
  70   ret |= one_test ("ab:W;", 2,
  71                    (char *[2]) { (char *) "bug-getopt3", (char *) "-a:" }, 2,
  72                    (int [2]) { 'a', '?' }, (int [2]) { 0, 1 });
  73
  74   if (ret == 0)
  75     puts ("all OK");
  76
  77   return ret;
  78 }
  79
  80 #define TEST_FUNCTION do_test ()
  81 #include "../test-skeleton.c"