--- a/src/hotspot/share/aot/aotCodeHeap.hpp	Fri Mar 15 18:59:21 2019 +0100
+++ b/src/hotspot/share/aot/aotCodeHeap.hpp	Fri Mar 15 16:00:18 2019 -0400
@@ -252,8 +252,8 @@
 
 
   void oops_do(OopClosure* f);
-  void metadata_do(void f(Metadata*));
-  void got_metadata_do(void f(Metadata*));
+  void metadata_do(MetadataClosure* f);
+  void got_metadata_do(MetadataClosure* f);
 
 #ifdef ASSERT
   bool got_contains(Metadata **p) {