--- old/src/hotspot/share/gc/g1/g1CollectedHeap.hpp	2017-11-28 11:57:05.567754741 +0100
+++ new/src/hotspot/share/gc/g1/g1CollectedHeap.hpp	2017-11-28 11:57:05.304757792 +0100
@@ -151,8 +151,8 @@
   WorkGang* _workers;
   G1CollectorPolicy* _collector_policy;
 
-  GCMemoryManager _mem_mgr;
-  GCMemoryManager _full_gc_mem_mgr;
+  GCMemoryManager _memory_manager;
+  GCMemoryManager _full_gc_memory_manager;
 
   MemoryPool* _eden_pool;
   MemoryPool* _survivor_pool;