--- a/hotspot/src/share/vm/gc/g1/heapRegion.inline.hpp	Wed Aug 23 10:25:25 2017 +0200
+++ b/hotspot/src/share/vm/gc/g1/heapRegion.inline.hpp	Wed Aug 23 14:52:55 2017 -0400
@@ -337,7 +337,7 @@
   const G1CMBitMap* const bitmap = g1h->concurrent_mark()->prevMarkBitMap();
   do {
     oop obj = oop(cur);
-    assert(obj->is_oop(true), "Not an oop at " PTR_FORMAT, p2i(cur));
+    assert(oopDesc::is_oop(obj, true), "Not an oop at " PTR_FORMAT, p2i(cur));
     assert(obj->klass_or_null() != NULL,
            "Unparsable heap at " PTR_FORMAT, p2i(cur));