--- old/src/hotspot/share/gc/z/zVirtualMemory.hpp	2019-08-09 10:45:19.336770223 +0200
+++ new/src/hotspot/share/gc/z/zVirtualMemory.hpp	2019-08-09 10:45:19.064770232 +0200
@@ -50,8 +50,8 @@
   ZMemoryManager _manager;
   bool           _initialized;
 
-  bool reserve(uintptr_t start, size_t size);
-  void nmt_reserve(uintptr_t start, size_t size);
+  bool reserve_range(uintptr_t start, size_t size);
+  size_t reserve(uintptr_t start, size_t size);
 
 public:
   ZVirtualMemoryManager();