--- old/src/hotspot/share/gc/g1/g1HeapTransition.cpp	2018-02-07 10:49:09.633629583 +0100
+++ new/src/hotspot/share/gc/g1/g1HeapTransition.cpp	2018-02-07 10:49:09.178615736 +0100
@@ -58,7 +58,7 @@
 class DetailedUsageClosure: public HeapRegionClosure {
 public:
   DetailedUsage _usage;
-  bool doHeapRegion(HeapRegion* r) {
+  bool do_heap_region(HeapRegion* r) {
     if (r->is_old()) {
       _usage._old_used += r->used();
       _usage._old_region_count++;