posix/bug-getopt2.c

   1 /* BZ 11039 */
   2 #include <unistd.h>
   3 #include <stdio.h>
   4 #include <stdlib.h>
   5
   6 static int
   7 one_test (const char *fmt, int argc, char *argv[], int expected[argc - 1])
   8 {
   9   int res = 0;
  10   for (int i = 0; i < argc - 1; ++i)
  11     {
  12       rewind (stderr);
  13       if (ftruncate (fileno (stderr), 0) != 0)
  14         {
  15           puts ("cannot truncate file");
  16           return 1;
  17         }
  18
  19       int c = getopt (argc, argv, fmt);
  20       if (c != expected[i])
  21         {
  22           printf ("format '%s' test %d failed: expected '%c', got '%c'\n",
  23                   fmt, i, expected[i], c);
  24           res = 1;
  25         }
  26       if (ftell (stderr) == 0)
  27         {
  28           printf ("format '%s' test %d failed: not printed to stderr\n",
  29                   fmt, i);
  30           res = 1;
  31         }
  32     }
  33
  34   return res;
  35 }
  36
  37
  38 static int
  39 do_test (void)
  40 {
  41   char fname[] = "/tmp/bug-getopt2.XXXXXX";
  42   int fd = mkstemp (fname);
  43   if (fd == -1)
  44     {
  45       printf ("mkstemp failed: %m\n");
  46       return 1;
  47     }
  48   close (fd);
  49
  50   if (freopen (fname, "w+", stderr) == NULL)
  51     {
  52       puts ("cannot redirect stderr");
  53       return 1;
  54     }
  55
  56   remove (fname);
  57
  58   optind = 0;
  59   int ret = one_test ("+a", 2,
  60                       (char *[2]) { (char *) "bug-getopt2", (char *) "-+" },
  61                       (int [1]) { '?' });
  62
  63   optind = 1;
  64   ret |= one_test ("+a", 2,
  65                    (char *[2]) { (char *) "bug-getopt2", (char *) "-+" },
  66                    (int [1]) { '?' });
  67
  68   if (ret == 0)
  69     puts ("all OK");
  70
  71   return ret;
  72 }
  73
  74 #define TEST_FUNCTION do_test ()
  75 #include "../test-skeleton.c"