--- old/src/hotspot/share/gc/g1/g1Policy.hpp	2019-03-04 12:03:59.547710942 +0100
+++ new/src/hotspot/share/gc/g1/g1Policy.hpp	2019-03-04 12:03:59.423710315 +0100
@@ -344,7 +344,7 @@
   bool next_gc_should_be_mixed(const char* true_action_str,
                                const char* false_action_str) const;
 
-  void finalize_collection_set(double target_pause_time_ms, G1SurvivorRegions* survivor);
+  uint finalize_collection_set(double target_pause_time_ms, G1SurvivorRegions* survivor);
 private:
   // Set the state to start a concurrent marking cycle and clear
   // _initiate_conc_mark_if_possible because it has now been