--- old/src/share/vm/gc_implementation/g1/g1GCPhaseTimes.hpp	2019-02-15 19:02:25.927235460 +0300
+++ new/src/share/vm/gc_implementation/g1/g1GCPhaseTimes.hpp	2019-02-15 19:02:25.823239098 +0300
@@ -278,7 +278,7 @@
 };
 
 class G1GCParPhaseTimesTracker : public StackObj {
-  double _start_time;
+  Ticks _start_time;
   G1GCPhaseTimes::GCParPhases _phase;
   G1GCPhaseTimes* _phase_times;
   uint _worker_id;