--- jsr166/src/test/tck/CompletableFutureTest.java	2015/11/15 23:31:51	1.138
+++ jsr166/src/test/tck/CompletableFutureTest.java	2016/01/23 20:02:48	1.139
@@ -1040,8 +1040,10 @@ public class CompletableFutureTest exten
 
         checkCompletedWithWrappedException(g, ex1);
         checkCompletedExceptionally(f, ex1);
-        assertEquals(1, ex1.getSuppressed().length);
-        assertSame(ex2, ex1.getSuppressed()[0]);
+        if (testImplementationDetails) {
+            assertEquals(1, ex1.getSuppressed().length);
+            assertSame(ex2, ex1.getSuppressed()[0]);
+        }
         assertEquals(1, a.get());
     }}