--- a/src/hotspot/share/gc/cms/concurrentMarkSweepGeneration.hpp	Wed May 09 11:24:12 2018 +0200
+++ b/src/hotspot/share/gc/cms/concurrentMarkSweepGeneration.hpp	Wed May 09 13:37:05 2018 +0200
@@ -487,7 +487,6 @@
 
   // Executes a task using worker threads.
   virtual void execute(ProcessTask& task);
-  virtual void execute(EnqueueTask& task);
 private:
   CMSCollector& _collector;
 };