/* ISC license. */

#undef _POSIX_C_SOURCE
#undef _XOPEN_SOURCE

#ifndef __EXTENSIONS__
#define __EXTENSIONS__
#endif
#ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif
#ifndef _BSD_SOURCE
#define _BSD_SOURCE
#endif
#ifndef _NETBSD_SOURCE
#define _NETBSD_SOURCE
#endif
#ifndef _INCOMPLETE_XOPEN_C063
#define _INCOMPLETE_XOPEN_C063
#endif
#ifndef _ALL_SOURCE
#define _ALL_SOURCE
#endif

#ifdef _AIX
extern int getpeereid (int, uid_t *, gid_t *) ;
#endif

#include <sys/types.h>
#include <unistd.h>

int main (void)
{
  uid_t uid ;
  gid_t gid ;
  int fd = 0 ;
  return getpeereid(fd, &uid, &gid) ;
}