--- jsr166/src/test/tck/AtomicInteger9Test.java	2016/06/17 19:00:48	1.1
+++ jsr166/src/test/tck/AtomicInteger9Test.java	2016/10/11 20:38:07	1.2
@@ -135,6 +135,19 @@ public class AtomicInteger9Test extends
     }
 
     /**
+     * repeated weakCompareAndSetPlain succeeds in changing value when equal
+     * to expected
+     */
+    public void testWeakCompareAndSetPlain() {
+        AtomicInteger ai = new AtomicInteger(1);
+        do {} while (!ai.weakCompareAndSetPlain(1, 2));
+        do {} while (!ai.weakCompareAndSetPlain(2, -4));
+        assertEquals(-4, ai.get());
+        do {} while (!ai.weakCompareAndSetPlain(-4, 7));
+        assertEquals(7, ai.get());
+    }
+
+    /**
      * repeated weakCompareAndSetVolatile succeeds in changing value when equal
      * to expected
      */