Fix GCC issues.

c++/src/capnp/arena.c++

@@ -57,9 +57,9 @@ public:
       : exception(exception),
         message(firstSegmentWordSize == 0 ? SUGGESTED_FIRST_SEGMENT_WORDS : firstSegmentWordSize) {}
 
-  RemotePromise<TypelessResults> send() override {
-    return RemotePromise<TypelessResults>(kj::cp(exception),
-        TypelessResults::Pipeline(kj::refcounted<BrokenPipeline>(exception)));
+  RemotePromise<ObjectPointer> send() override {
+    return RemotePromise<ObjectPointer>(kj::cp(exception),
+        ObjectPointer::Pipeline(kj::refcounted<BrokenPipeline>(exception)));
   }
 
   kj::Exception exception;
@@ -73,10 +73,11 @@ public:
       : exception(kj::Exception::Nature::PRECONDITION, kj::Exception::Durability::PERMANENT,
                   "", 0, kj::str(description)) {}
 
-  Request<ObjectPointer, TypelessResults> newCall(
+  Request<ObjectPointer, ObjectPointer> newCall(
       uint64_t interfaceId, uint16_t methodId, uint firstSegmentWordSize) const override {
     auto hook = kj::heap<BrokenRequest>(exception, firstSegmentWordSize);
-    return Request<ObjectPointer, TypelessResults>(hook->message.getRoot(), kj::mv(hook));
+    auto root = hook->message.getRoot();
+    return Request<ObjectPointer, ObjectPointer>(root, kj::mv(hook));
   }
 
   VoidPromiseAndPipeline call(uint64_t interfaceId, uint16_t methodId,

c++/src/capnp/capability.h

@@ -162,16 +162,13 @@ protected:
 private:
   kj::Own<const ClientHook> hook;
 
-  template <typename, ::capnp::Kind>
-  friend struct ::capnp::_::PointerHelpers;
-
   static kj::Own<const ClientHook> makeLocalClient(
       kj::Own<Capability::Server>&& server, const kj::EventLoop& eventLoop);
 
+  template <typename, Kind>
+  friend struct _::PointerHelpers;
   friend struct DynamicCapability;
   friend class Orphanage;
-  template <typename T, Kind k>
-  friend struct _::PointerHelpers;
   friend struct DynamicStruct;
   friend struct DynamicList;
   template <typename, Kind>

c++/src/capnp/object.h

@@ -233,9 +233,6 @@ struct ObjectPointer {
   };
 };
 
-// TODO(now):  delete
-typedef ObjectPointer TypelessResults;
-
 template <>
 class Orphan<ObjectPointer> {
   // An orphaned object of unknown type.

c++/src/kj/exception-test.c++

@@ -55,7 +55,7 @@ class ThrowingDestructor: public UnwindDetector {
 public:
   ~ThrowingDestructor() noexcept(false) {
     catchExceptionsIfUnwinding([]() {
-      KJ_FAIL_ASSERT("bar") { break; }
+      KJ_FAIL_ASSERT("this is a test, not a real bug") { break; }
     });
   }
 };
@@ -67,7 +67,7 @@ TEST(Exception, UnwindDetector) {
   });
 
   KJ_IF_MAYBE(ex, e) {
-    EXPECT_EQ("bar", ex->getDescription());
+    EXPECT_EQ("this is a test, not a real bug", ex->getDescription());
   } else {
     ADD_FAILURE() << "Expected exception";
   }