--- old/src/hotspot/share/gc/shared/gcCause.hpp	2018-06-01 22:29:50.122701654 +0200
+++ new/src/hotspot/share/gc/shared/gcCause.hpp	2018-06-01 22:29:49.863690474 +0200
@@ -78,6 +78,12 @@
 
     _dcmd_gc_run,
 
+    _z_timer,
+    _z_warmup,
+    _z_allocation_rate,
+    _z_allocation_stall,
+    _z_proactive,
+
     _last_gc_cause
   };