#define _GNU_SOURCE
#include <unistd.h>
#include <getopt.h>
#include <stdio.h>

struct option options[] =
{
  {
    "stop-at-entry", 0, 0, 's'
  },
  {
    "shell", 1, 0, 'c'
  },
  {
    NULL, 0, 0, 0
  }
};

extern int optreset;
int main(void)
{
  int val;
  optind = 1;
  //optreset = 1;

  int argc = 3;
  char *argv[] = {"dummy_arg", "--shell=/bin/sh", "--", NULL};
  int longindex = -1;
  char *optstring = "sc::";

  printf("**optind is %d, argv[%d] is %s\n", optind, optind, argv[optind]);
  val = getopt_long_only(argc, argv, optstring, &options[0], &longindex);
  if (val != 'c') {
    printf ("%d: getopt_long_only FAIL\n", __LINE__);
    return 1;
  }
  printf("**optind is %d, argv[%d] is %s\n", optind, optind, argv[optind]);
  val = getopt_long_only(argc, argv, optstring, &options[0], &longindex);
  if (val != -1) {
    printf ("%d: getopt_long_only FAIL\n", __LINE__);
    return 1;
  }
  return 0;
}