--- old/src/hotspot/share/ci/ciKlass.hpp	2020-01-24 19:17:13.968141663 +0000
+++ new/src/hotspot/share/ci/ciKlass.hpp	2020-01-24 19:17:13.187860088 +0000
@@ -44,6 +44,7 @@
   friend class ciMethod;
   friend class ciMethodData;
   friend class ciObjArrayKlass;
+  friend class ciSignature;
   friend class ciReceiverTypeData;
 
 private: