Workaround of a Jack front-end bug related to type inference

- ECJ 4.7 M3 fails to infer type in some cases, thus add a cast
to the expected type to workaround the bug.

Test: m -j32 (release bullhead userdebug)

Bug: 33371837

(cherry picked from commit 918efe9ba819b7a03729b6f6ef7ead2f70a20447)

Change-Id: I50326ddd753cc4bf6d1dfd349a046626d7e1fc33
diff --git a/jsr166-tests/src/test/java/jsr166/CompletableFutureTest.java b/jsr166-tests/src/test/java/jsr166/CompletableFutureTest.java
index 37bc285..b7a1f0f 100644
--- a/jsr166-tests/src/test/java/jsr166/CompletableFutureTest.java
+++ b/jsr166-tests/src/test/java/jsr166/CompletableFutureTest.java
@@ -3732,7 +3732,7 @@
             (method) -> (method.getModifiers() & Modifier.STATIC) == 0;
         List<Method> minimalMethods =
             Stream.of(Object.class, CompletionStage.class)
-            .flatMap((klazz) -> Stream.of(klazz.getMethods()))
+            .flatMap((klazz) -> (Stream<Method>) Stream.of(klazz.getMethods()))
             .filter(isNotStatic)
             .collect(Collectors.toList());
         // Methods from CompletableFuture permitted NOT to throw UOE
diff --git a/ojluni/src/test/java/util/stream/test/org/openjdk/tests/java/util/stream/TabulatorsTest.java b/ojluni/src/test/java/util/stream/test/org/openjdk/tests/java/util/stream/TabulatorsTest.java
index 486a9cf..e8c7d17 100644
--- a/ojluni/src/test/java/util/stream/test/org/openjdk/tests/java/util/stream/TabulatorsTest.java
+++ b/ojluni/src/test/java/util/stream/test/org/openjdk/tests/java/util/stream/TabulatorsTest.java
@@ -606,7 +606,7 @@
     @Test(dataProvider = "StreamTestData<Integer>", dataProviderClass = StreamTestDataProvider.class)
     public void testComposeFinisher(String name, TestData.OfRef<Integer> data) throws ReflectiveOperationException {
         List<Integer> asList = exerciseTerminalOps(data, s -> s.collect(toList()));
-        List<Integer> asImmutableList = exerciseTerminalOps(data, s -> s.collect(collectingAndThen(toList(), Collections::unmodifiableList)));
+        List<Integer> asImmutableList = exerciseTerminalOps(data, s -> (List<Integer>) s.collect(collectingAndThen(toList(), Collections::unmodifiableList)));
         assertEquals(asList, asImmutableList);
         try {
             asImmutableList.add(0);