diff -r 2601fc0874be -r 9fe5d0d4e9c5 src/hotspot/share/utilities/ticks.hpp
--- a/src/hotspot/share/utilities/ticks.hpp	Fri Nov 22 19:23:30 2019 -0800
+++ b/src/hotspot/share/utilities/ticks.hpp	Sun Nov 24 01:03:33 2019 +0100
@@ -233,6 +233,7 @@
   TimeInstant(jlong ticks) : Rep<TimeSource>(ticks) {}
   friend class GranularTimer;
   friend class ObjectSample;
+  friend class EventEmitter;
   // GC unit tests
   friend class TimePartitionPhasesIteratorTest;
   friend class GCTimerTest;