--- jsr166/src/jsr166y/LinkedTransferQueue.java	2010/09/01 23:40:29	1.77
+++ jsr166/src/jsr166y/LinkedTransferQueue.java	2010/09/09 16:52:49	1.78
@@ -886,7 +886,7 @@ public class LinkedTransferQueue<E> exte
                 p = head;
             else if (!s.isMatched())
                 p = s;
-            else if ((n = s.next) == null) // trailing node is pinned
+            else if ((n = s.next) == null || s == n) // trailing node is pinned
                 break;
             else
                 p.casNext(s, n);