diff -r 9dca61a7df19 -r 369ebc2a11c2 src/hotspot/share/jfr/recorder/repository/jfrChunk.hpp
--- a/src/hotspot/share/jfr/recorder/repository/jfrChunk.hpp	Sun Sep 15 13:41:19 2019 +0200
+++ b/src/hotspot/share/jfr/recorder/repository/jfrChunk.hpp	Sun Sep 15 15:31:04 2019 +0200
@@ -27,6 +27,10 @@
 
 #include "jfr/utilities/jfrAllocation.hpp"
 
+const u1 COMPLETE = 0;
+const u1 GUARD = 0xff;
+const u1 PAD = 0;
+
 class JfrChunk : public JfrCHeapObj {
   friend class JfrChunkWriter;
   friend class JfrChunkHeadWriter;