src/share/classes/java/lang/Thread.java

@@ -207,11 +207,11 @@
 
     /* Java thread status for tools,
      * initialized to indicate thread 'not yet started'
      */
 
-    private int threadStatus = 0;
+    private volatile int threadStatus = 0;
 
 
     private static synchronized long nextThreadID() {
         return ++threadSeqNumber;
     }