--- a/src/hotspot/share/opto/memnode.cpp	Tue Sep 10 07:42:04 2019 +0200
+++ b/src/hotspot/share/opto/memnode.cpp	Tue Sep 10 08:43:33 2019 +0200
@@ -342,7 +342,7 @@
       }
     }
     Node* frame = igvn->transform(new ParmNode(phase->C->start(), TypeFunc::FramePtr));
-    Node* halt = igvn->transform(new HaltNode(ctl, frame));
+    Node* halt = igvn->transform(new HaltNode(ctl, frame, "unsafe off-heap access with zero address"));
     phase->C->root()->add_req(halt);
     return this;
   }