--- old/src/share/vm/ci/ciEnv.hpp	2017-04-25 16:44:07.147176163 +0200
+++ new/src/share/vm/ci/ciEnv.hpp	2017-04-25 16:44:07.003176168 +0200
@@ -187,10 +187,6 @@
     }
   }
 
-  void ensure_metadata_alive(ciMetadata* m) {
-    _factory->ensure_metadata_alive(m);
-  }
-
   ciInstance* get_instance(oop o) {
     if (o == NULL) return NULL;
     return get_object(o)->as_instance();