The following program never terminates when running it with
the JIT on. It works fine if I run it with -Djava.compiler=symcjit.
It runs fine with the HotSpot VM too.


---- session ----
D:\renes\opto\testing>java -classic -Djava.compiler=NONE Loop2
Main started
Count 0
loop started
Count -218303
Send kill signal
Thread is dead
java.lang.ThreadDeath
loop ended

D:\renes\opto\testing>java -classic Loop2
Main started
loop started
Count 0
Count -5036218
Send kill signal
Thread is dead
^C <==== HANGS

D:\renes\opto\testing>java -classic -version
java version "1.2"
Classic VM (build JDK-1.2-V, native threads)


----- Loop2.java ------
class Counter implements Runnable {

  int _count = 0;

  public void run() {
    loop(false);
  }

  boolean _once;

  void loop(boolean once) {
    System.out.println("loop started");
    try {
    for(int j = 1; j < 32767 * 32767; j++) {
      for(int i = 1; i < 32767 * 32767; i++) {
        _count += _count + i * j;
      }
    }
    } catch(Throwable e) {
     System.out.println(e);
    } finally {
      System.out.println("loop ended");
    }
  }

  int getCount() { return _count; }
}



public class Loop2 {

  public static void main(String[] args) {
    System.out.println("Main started");
    Counter c = new Counter();

    Thread t = new Thread(c);
    t.start();


    for(int i = 0; i < 2; i++) {
      System.out.println("Count " + c.getCount());
      System.gc();
      pause();
    }

    System.out.println("Send kill signal");
    t.stop();

    while(t.isAlive()) {
      pause();
    }
    System.out.println("Thread is dead");
   }

   static void pause() {
     try {
       Thread.sleep(50);
     } catch(InterruptedException e) {}
   }
}