diff -r cebd0673feeb -r fb66b2959eaf src/hotspot/share/jfr/recorder/stacktrace/jfrStackTraceRepository.cpp
--- a/src/hotspot/share/jfr/recorder/stacktrace/jfrStackTraceRepository.cpp	Tue May 15 14:15:47 2018 -0700
+++ b/src/hotspot/share/jfr/recorder/stacktrace/jfrStackTraceRepository.cpp	Tue May 15 23:37:37 2018 +0200
@@ -31,6 +31,7 @@
 #include "jfr/utilities/jfrTypes.hpp"
 #include "memory/allocation.inline.hpp"
 #include "runtime/mutexLocker.hpp"
+#include "runtime/os.inline.hpp"
 #include "runtime/safepoint.hpp"
 #include "runtime/task.hpp"
 #include "runtime/vframe.inline.hpp"