--- jsr166/src/test/tck/AtomicReference9Test.java	2016/06/17 19:00:48	1.1
+++ jsr166/src/test/tck/AtomicReference9Test.java	2016/10/11 20:38:07	1.2
@@ -135,6 +135,19 @@ public class AtomicReference9Test extend
     }
 
     /**
+     * repeated weakCompareAndSetPlain succeeds in changing value when equal
+     * to expected
+     */
+    public void testWeakCompareAndSetPlain() {
+        AtomicReference<Integer> ai = new AtomicReference<>(one);
+        do {} while (!ai.weakCompareAndSetPlain(one, two));
+        do {} while (!ai.weakCompareAndSetPlain(two, m4));
+        assertEquals(m4, ai.get());
+        do {} while (!ai.weakCompareAndSetPlain(m4, seven));
+        assertEquals(seven, ai.get());
+    }
+
+    /**
      * repeated weakCompareAndSetVolatile succeeds in changing value when equal
      * to expected
      */