--- old/src/hotspot/share/gc/shared/referenceProcessor.cpp	2018-05-08 09:41:16.422687237 +0200
+++ new/src/hotspot/share/gc/shared/referenceProcessor.cpp	2018-05-08 09:41:16.127678121 +0200
@@ -132,24 +132,6 @@
   setup_policy(false /* default soft ref policy */);
 }
 
-SpanReferenceProcessor::SpanReferenceProcessor(MemRegion span,
-                                                         bool      mt_processing,
-                                                         uint      mt_processing_degree,
-                                                         bool      mt_discovery,
-                                                         uint      mt_discovery_degree,
-                                                         bool      atomic_discovery,
-                                                         BoolObjectClosure* is_alive_non_header)  :
-  ReferenceProcessor(&_span_based_discoverer,
-                     mt_processing,
-                     mt_processing_degree,
-                     mt_discovery,
-                     mt_discovery_degree,
-                     atomic_discovery,
-                     is_alive_non_header),
-  _span_based_discoverer(span) {
-
-}
-
 #ifndef PRODUCT
 void ReferenceProcessor::verify_no_references_recorded() {
   guarantee(!_discovering_refs, "Discovering refs?");
@@ -974,8 +956,7 @@
 }
 #endif
 
-template <class T>
-bool ReferenceProcessor::is_subject_to_discovery(T const obj) const {
+bool ReferenceProcessor::is_subject_to_discovery(oop const obj) const {
   return _is_subject_to_discovery->do_object_b(obj);
 }