--- a/hotspot/src/share/vm/opto/memnode.cpp	Mon May 22 09:18:12 2017 +0200
+++ b/hotspot/src/share/vm/opto/memnode.cpp	Mon May 22 09:23:59 2017 +0200
@@ -1123,6 +1123,9 @@
       // Use _idx of address base (could be Phi node) for boxed values.
       intptr_t   ignore = 0;
       Node*      base = AddPNode::Ideal_base_and_offset(in(Address), phase, ignore);
+      if (base == NULL) {
+        return this;
+      }
       this_iid = base->_idx;
     }
     const Type* this_type = bottom_type();