--- jsr166/src/test/tck/JSR166TestCase.java	2010/10/28 17:57:26	1.66
+++ jsr166/src/test/tck/JSR166TestCase.java	2010/11/21 19:04:45	1.70
@@ -289,7 +289,7 @@ public class JSR166TestCase extends Test
      * earlier by threadRecordFailure.
      */
     public void tearDown() throws Exception {
-        Throwable t = threadFailure.get();
+        Throwable t = threadFailure.getAndSet(null);
         if (t != null) {
             if (t instanceof Error)
                 throw (Error) t;
@@ -616,9 +616,14 @@ public class JSR166TestCase extends Test
             Thread.State s = thread.getState();
             if (s == Thread.State.BLOCKED ||
                 s == Thread.State.WAITING ||
-                s == Thread.State.TIMED_WAITING ||
-                System.nanoTime() - t0 > timeoutNanos)
+                s == Thread.State.TIMED_WAITING)
                 return;
+            else if (s == Thread.State.TERMINATED)
+                fail("Unexpected thread termination");
+            else if (System.nanoTime() - t0 > timeoutNanos) {
+                threadAssertTrue(thread.isAlive());
+                return;
+            }
             Thread.yield();
         }
     }
@@ -631,7 +636,7 @@ public class JSR166TestCase extends Test
     long millisElapsedSince(long startNanoTime) {
         return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
     }
-    
+
     /**
      * Returns a new started daemon Thread running the given runnable.
      */