--- a/src/hotspot/share/compiler/compileTask.hpp	Fri Mar 15 18:59:21 2019 +0100
+++ b/src/hotspot/share/compiler/compileTask.hpp	Fri Mar 15 16:00:18 2019 -0400
@@ -177,7 +177,7 @@
   bool         is_unloaded() const;
 
   // RedefineClasses support
-  void         metadata_do(void f(Metadata*));
+  void         metadata_do(MetadataClosure* f);
   void         mark_on_stack();
 
 private: