diff -r 506bd2e1f840 -r 2c3cc4b01880 src/hotspot/share/oops/method.hpp
--- a/src/hotspot/share/oops/method.hpp	Tue Oct 29 14:29:40 2019 +0100
+++ b/src/hotspot/share/oops/method.hpp	Wed Oct 30 16:14:56 2019 +0100
@@ -608,7 +608,7 @@
 
   void compute_size_of_parameters(Thread *thread); // word size of parameters (receiver if any + arguments)
   Symbol* klass_name() const;                    // returns the name of the method holder
-  BasicType result_type() const;                 // type of the method result
+  BasicType result_type() const                  { return constMethod()->result_type(); }
   bool is_returning_oop() const                  { BasicType r = result_type(); return is_reference_type(r); }
   bool is_returning_fp() const                   { BasicType r = result_type(); return (r == T_FLOAT || r == T_DOUBLE); }