msgpack-rpc: handle failure to convert method arguments #2664

src/nvim/msgpack_rpc/helpers.c

@@ -306,6 +306,17 @@ Object msgpack_rpc_handle_missing_method(uint64_t channel_id,
   return NIL;
 }
 
+/// Handler executed when malformated arguments are passed
+Object msgpack_rpc_handle_invalid_arguments(uint64_t channel_id,
+                                            uint64_t request_id,
+                                            Array args,
+                                            Error *error)
+{
+  snprintf(error->msg, sizeof(error->msg), "Invalid method arguments");
+  error->set = true;
+  return NIL;
+}
+
 /// Serializes a msgpack-rpc request or notification(id == 0)
 void msgpack_rpc_serialize_request(uint64_t request_id,
                                    String method,