--- old/src/hotspot/share/runtime/signature.hpp	2019-07-25 15:33:04.961450144 -0700
+++ new/src/hotspot/share/runtime/signature.hpp	2019-07-25 15:33:04.637438348 -0700
@@ -484,8 +484,8 @@
 #ifdef ASSERT
 class SignatureVerifier : public StackObj {
   public:
-    static bool is_valid_method_signature(Symbol* sig);
-    static bool is_valid_type_signature(Symbol* sig);
+    static bool is_valid_method_signature(const Symbol* sig);
+    static bool is_valid_type_signature(const Symbol* sig);
   private:
     static ssize_t is_valid_type(const char*, ssize_t);
 };