posix/bug-getopt5.c

   1 /* BZ 11041 */
   2 #include <getopt.h>
   3 #include <unistd.h>
   4 #include <stdio.h>
   5
   6 static const struct option opts[] =
   7   {
   8     { "a1",    no_argument, NULL, 'a' },
   9     { "a2",    no_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 ("format '%s' test %d failed: expected '%c', got '%c'\n",
  32                   fmt, i, expected[i], c);
  33           res = 1;
  34         }
  35       if (ftell (stderr) != 0)
  36         {
  37           printf ("format '%s' test %d failed: printed to stderr\n",
  38                   fmt, i);
  39           res = 1;
  40         }
  41     }
  42
  43   return res;
  44 }
  45
  46
  47 static int
  48 do_test (void)
  49 {
  50   char *fname = tmpnam (NULL);
  51   if (fname == NULL)
  52     {
  53       puts ("cannot generate name for temporary file");
  54       return 1;
  55     }
  56
  57   if (freopen (fname, "w+", stderr) == NULL)
  58     {
  59       puts ("cannot redirect stderr");
  60       return 1;
  61     }
  62
  63   remove (fname);
  64
  65   int ret = one_test (":W;", 2,
  66                       (char *[2]) { (char *) "bug-getopt5", (char *) "--a" },
  67                       1, (int [1]) { 'a' });
  68
  69   ret |= one_test (":W;", 3,
  70                    (char *[3]) { (char *) "bug-getopt5", (char *) "-W",
  71                                  (char *) "a" },
  72                    1, (int [1]) { 'a' });
  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"