Ticket #19048: foo.c

#include <errno.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <assert.h>

int
main ()
{
  char buf[80];
  int ret = readlinkat (-1, "link", buf, sizeof (buf));

  if (ret >= 0)
    printf ("ret = %d\n", ret);
  else if (errno == EBADF)
    printf ("ret = %d, errno == EBADF\n", ret);
  else
    printf ("ret = %d, errno == %s\n", ret, strerror (errno));

  assert (ret < 0 && errno == EBADF);

  printf ("OK\n");
}