--- a/src/hotspot/share/gc/g1/sparsePRT.cpp	Wed Oct 31 13:43:57 2018 +0100
+++ b/src/hotspot/share/gc/g1/sparsePRT.cpp	Wed Oct 31 13:43:57 2018 +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;