--- jsr166/src/test/tck/AbstractQueuedSynchronizerTest.java	2019/08/13 00:54:51	1.66
+++ jsr166/src/test/tck/AbstractQueuedSynchronizerTest.java	2019/08/13 03:39:46	1.67
@@ -1316,7 +1316,7 @@ public class AbstractQueuedSynchronizerT
 
         // A synchronizer only offering a choice of failure modes
         class Sync extends AbstractQueuedSynchronizer {
-            boolean pleaseThrow;
+            volatile boolean pleaseThrow;
             @Override protected boolean tryAcquire(int ignored) {
                 if (pleaseThrow) throw ex;
                 return false;