--- a/src/hotspot/share/gc/g1/g1CardCounts.cpp	Wed Feb 14 16:58:49 2018 +0800
+++ b/src/hotspot/share/gc/g1/g1CardCounts.cpp	Wed Feb 14 13:29:45 2018 +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;
   }