--- old/src/hotspot/share/gc/g1/g1CardCounts.cpp	2018-02-07 10:48:49.543018182 +0100
+++ new/src/hotspot/share/gc/g1/g1CardCounts.cpp	2018-02-07 10:48:49.086004274 +0100
@@ -144,7 +144,7 @@
     HeapRegionClosure(), _card_counts(card_counts) { }
 
 
-  virtual bool doHeapRegion(HeapRegion* r) {
+  virtual bool do_heap_region(HeapRegion* r) {
     _card_counts->clear_region(r);
     return false;
   }