--- old/src/hotspot/share/opto/node.cpp	2018-10-18 09:24:18.320381287 +0200
+++ new/src/hotspot/share/opto/node.cpp	2018-10-18 09:24:09.825408511 +0200
@@ -1389,7 +1389,7 @@
             // and remove_globally_dead_node().
             igvn->add_users_to_worklist( n );
           } else {
-            BarrierSet::barrier_set()->barrier_set_c2()->enqueue_useful_gc_barrier(igvn->_worklist, n);
+            BarrierSet::barrier_set()->barrier_set_c2()->enqueue_useful_gc_barrier(igvn, n);
           }
         }
       }