--- a/src/hotspot/share/gc/g1/g1FullGCOopClosures.hpp	Tue Jun 26 12:29:20 2018 -0700
+++ b/src/hotspot/share/gc/g1/g1FullGCOopClosures.hpp	Tue Jun 26 13:54:19 2018 +0200
@@ -84,7 +84,7 @@
   virtual ReferenceIterationMode reference_iteration_mode() { return DO_FIELDS; }
 };
 
-class G1VerifyOopClosure: public OopClosure {
+class G1VerifyOopClosure: public BasicOopIterateClosure {
 private:
   G1CollectedHeap* _g1h;
   bool             _failures;