--- a/src/hotspot/share/gc/g1/g1Policy.hpp	Wed Dec 12 15:04:47 2018 +0530
+++ b/src/hotspot/share/gc/g1/g1Policy.hpp	Wed Dec 12 12:00:02 2018 +0100
@@ -399,7 +399,7 @@
 
   AgeTable _survivors_age_table;
 
-  size_t desired_survivor_size() const;
+  size_t desired_survivor_size(uint max_regions) const;
 public:
   // Fraction used when predicting how many optional regions to include in
   // the CSet. This fraction of the available time is used for optional regions,