import java.lang.reflect.Field;
import sun.misc.Unsafe;

public class TestThreadStackSize {
  private static void crashVM() {
    try {
      makeSegfault(getUnsafe());
    } catch (Exception e) {
      // swallow
    }
  }
  
  private static Unsafe getUnsafe() throws Exception {
    Field f = Unsafe.class.getDeclaredField("theUnsafe");
    f.setAccessible(true);
    return (Unsafe) f.get(null);
  }
  
  private static void makeSegfault(Unsafe u) throws Exception {
    u.getInt(0);
  }
  
  public static void main(String[] args) throws Exception {
    Thread t = new Thread(new Runnable() {
      public void run() {
        crashVM();
      }
    });
    t.start();
    t.join();
  }
}