--- jsr166/src/test/tck/LockSupportTest.java	2011/05/06 11:22:07	1.19
+++ jsr166/src/test/tck/LockSupportTest.java	2011/05/06 17:33:55	1.20
@@ -332,6 +332,16 @@ public class LockSupportTest extends JSR
     }
 
     /**
+     * getBlocker(null) throws NullPointerException
+     */
+    public void testGetBlockerNull() {
+        try {
+            LockSupport.getBlocker(null);
+            shouldThrow();
+        } catch (NullPointerException success) {}
+    }
+
+    /**
      * parkUntil(0) returns immediately
      * Requires hotspot fix for:
      * 6763959 java.util.concurrent.locks.LockSupport.parkUntil(0) blocks forever