--- jsr166/src/test/tck/AbstractQueuedSynchronizerTest.java	2018/07/22 22:13:55	1.65
+++ 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;
@@ -1338,7 +1338,7 @@ public class AbstractQueuedSynchronizerT
         final Thread thread = newStartedThread(new CheckedRunnable() {
             public void realRun() {
                 try {
-                    if (ThreadLocalRandom.current().nextBoolean())
+                    if (randomBoolean())
                         s.acquire(1);
                     else
                         s.acquireShared(1);