posix/bug-getopt2.c

   1 /* BZ 11039 */
   2 #include <unistd.h>
   3 #include <stdio.h>
   4
   5 static int
   6 one_test (const char *fmt, int argc, char *argv[], int expected[argc - 1])
   7 {
   8   int res = 0;
   9   for (int i = 0; i < argc - 1; ++i)
  10     {
  11       rewind (stderr);
  12       if (ftruncate (fileno (stderr), 0) != 0)
  13         {
  14           puts ("cannot truncate file");
  15           return 1;
  16         }
  17
  18       int c = getopt (argc, argv, fmt);
  19       if (c != expected[i])
  20         {
  21           printf ("format '%s' test %d failed: expected '%c', got '%c'\n",
  22                   fmt, i, expected[i], c);
  23           res = 1;
  24         }
  25       if (ftell (stderr) == 0)
  26         {
  27           printf ("format '%s' test %d failed: not printed to stderr\n",
  28                   fmt, i);
  29           res = 1;
  30         }
  31     }
  32
  33   return res;
  34 }
  35
  36
  37 static int
  38 do_test (void)
  39 {
  40   char *fname = tmpnam (NULL);
  41   if (fname == NULL)
  42     {
  43       puts ("cannot generate name for temporary file");
  44       return 1;
  45     }
  46
  47   if (freopen (fname, "w+", stderr) == NULL)
  48     {
  49       puts ("cannot redirect stderr");
  50       return 1;
  51     }
  52
  53   remove (fname);
  54
  55   optind = 0;
  56   int ret = one_test ("+a", 2,
  57                       (char *[2]) { (char *) "bug-getopt2", (char *) "-+" },
  58                       (int [1]) { '?' });
  59
  60   optind = 1;
  61   ret |= one_test ("+a", 2,
  62                    (char *[2]) { (char *) "bug-getopt2", (char *) "-+" },
  63                    (int [1]) { '?' });
  64
  65   if (ret == 0)
  66     puts ("all OK");
  67
  68   return ret;
  69 }
  70
  71 #define TEST_FUNCTION do_test ()
  72 #include "../test-skeleton.c"