1 files changed, 3 insertions, 0 deletions
diff --git a/method.h b/method.h
index cc7b51dddb..ba5899ca93 100644
--- a/method.h
+++ b/method.h
@@ -45,8 +45,11 @@ typedef enum {
     VM_METHOD_TYPE_CFUNC_FRAMELESS
 } rb_method_type_t;
 
+struct rb_call_info_struct;
+
 typedef struct rb_method_cfunc_struct {
     VALUE (*func)(ANYARGS);
+    VALUE (*invoker)(const struct rb_call_info_struct *ci, const VALUE *argv);
     int argc;
 } rb_method_cfunc_t;