--- a/src/hotspot/share/gc/z/zStat.cpp	Fri Sep 13 08:40:09 2019 +0200
+++ b/src/hotspot/share/gc/z/zStat.cpp	Fri Sep 13 08:40:09 2019 +0200
@@ -755,7 +755,7 @@
 //
 // Stat timer
 //
-__thread uint32_t ZStatTimerDisable::_active = 0;
+THREAD_LOCAL uint32_t ZStatTimerDisable::_active = 0;
 
 //
 // Stat sample/inc