diff -r fdc2a952e8fe -r 216c2aabbf1f src/hotspot/share/gc/g1/g1HeapTransition.cpp
--- a/src/hotspot/share/gc/g1/g1HeapTransition.cpp	Thu Feb 08 20:19:02 2018 +0000
+++ b/src/hotspot/share/gc/g1/g1HeapTransition.cpp	Fri Feb 09 11:51:40 2018 +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++;