--- old/src/hotspot/share/gc/parallel/psOldGen.hpp	2020-05-11 12:37:08.547593066 -0400
+++ new/src/hotspot/share/gc/parallel/psOldGen.hpp	2020-05-11 12:37:08.147579706 -0400
@@ -49,7 +49,6 @@
   SpaceCounters*           _space_counters;
 
   // Sizing information, in bytes, set in constructor
-  const size_t _init_gen_size;
   const size_t _min_gen_size;
   const size_t _max_gen_size;
 
@@ -110,9 +109,9 @@
 
   void post_resize();
 
-  void initialize(ReservedSpace rs, size_t alignment,
+  void initialize(ReservedSpace rs, size_t initial_size, size_t alignment,
                   const char* perf_data_name, int level);
-  void initialize_virtual_space(ReservedSpace rs, size_t alignment);
+  void initialize_virtual_space(ReservedSpace rs, size_t initial_size, size_t alignment);
   void initialize_work(const char* perf_data_name, int level);
   void initialize_performance_counters(const char* perf_data_name, int level);