--- jsr166/src/test/tck/CompletableFutureTest.java	2018/09/23 02:06:28	1.207
+++ jsr166/src/test/tck/CompletableFutureTest.java	2018/09/23 15:29:31	1.208
@@ -3167,6 +3167,8 @@ public class CompletableFutureTest exten
         final CompletableFuture<Integer> g = m.exceptionallyCompose(f, r);
         if (createIncomplete) assertTrue(f.complete(v1));
 
+        if (!createIncomplete && testImplementationDetails)
+            assertSame(f, g);
         checkCompletedNormally(f, v1);
         checkCompletedNormally(g, v1);
         r.assertNotInvoked();