diff -r aa7b1ea52413 -r a57907813a83 src/hotspot/share/jfr/recorder/checkpoint/types/traceid/jfrTraceIdEpoch.cpp
--- a/src/hotspot/share/jfr/recorder/checkpoint/types/traceid/jfrTraceIdEpoch.cpp	Fri Aug 30 20:39:38 2019 +0200
+++ b/src/hotspot/share/jfr/recorder/checkpoint/types/traceid/jfrTraceIdEpoch.cpp	Mon Sep 02 19:42:46 2019 +0200
@@ -31,7 +31,7 @@
 // The regular epoch shift happens only during a safepoint.
 // The fence is there only for the emergency dump case which happens outside of safepoint.
 bool JfrTraceIdEpoch::_epoch_state = false;
-bool volatile JfrTraceIdEpoch::_klass_tagged_in_epoch = false;
+bool volatile JfrTraceIdEpoch::_tag_state = false;
 
 void JfrTraceIdEpoch::shift_epoch() {
   _epoch_state = !_epoch_state;