--- old/src/hotspot/share/gc/g1/sparsePRT.cpp	2018-10-30 10:43:51.921066228 +0100
+++ new/src/hotspot/share/gc/g1/sparsePRT.cpp	2018-10-30 10:43:51.491053008 +0100
@@ -361,8 +361,8 @@
 }
 
 
-SparsePRT::SparsePRT(HeapRegion* hr) :
-  _hr(hr), _expanded(false), _next_expanded(NULL)
+SparsePRT::SparsePRT() :
+  _expanded(false), _next_expanded(NULL)
 {
   _cur = new RSHashTable(InitialCapacity);
   _next = _cur;