--- jsr166/src/test/tck/CompletableFutureTest.java	2016/11/26 20:32:24	1.181
+++ jsr166/src/test/tck/CompletableFutureTest.java	2017/01/03 03:18:02	1.182
@@ -93,10 +93,10 @@ public class CompletableFutureTest exten
      * Returns the "raw" internal exceptional completion of f,
      * without any additional wrapping with CompletionException.
      */
-    <U> Throwable exceptionalCompletion(CompletableFuture<U> f) {
-        // handle (and whenComplete) can distinguish between "direct"
-        // and "wrapped" exceptional completion
-        return f.handle((U u, Throwable t) -> t).join();
+    Throwable exceptionalCompletion(CompletableFuture<?> f) {
+        // handle (and whenComplete and exceptionally) can distinguish
+        // between "direct" and "wrapped" exceptional completion
+        return f.handle((u, t) -> t).join();
     }
 
     void checkCompletedExceptionally(CompletableFuture<?> f,