--- a/hotspot/src/share/vm/gc/shared/collectedHeap.cpp	Wed Aug 23 10:25:25 2017 +0200
+++ b/hotspot/src/share/vm/gc/shared/collectedHeap.cpp	Wed Aug 23 14:52:55 2017 -0400
@@ -350,7 +350,7 @@
       assert(is_in(old_obj), "Not in allocated heap");
       assert(!can_elide_initializing_store_barrier(old_obj),
              "Else should have been filtered in new_store_pre_barrier()");
-      assert(old_obj->is_oop(true), "Not an oop");
+      assert(oopDesc::is_oop(old_obj, true), "Not an oop");
       assert(deferred.word_size() == (size_t)(old_obj->size()),
              "Mismatch: multiple objects?");
     }