...

net/adc_device_netserver.h

@@ -158,7 +158,7 @@ protected:
                 if constexpr (std::same_as<serialized_t, val_t> || std::convertible_to<val_t, serialized_t>) {
                     return val;
                 } else {
-                    // !!!!!!!!  TODO: val_t maust be a char range
+                    // !!!!!!!!  TODO: val_t must be a char range
                     return serialized_t{val.begin(), val.end()};
                 }
             };
@@ -199,7 +199,7 @@ protected:
         }
     };
 
-    static DeviceWrapper nullDevice;
+    static inline DeviceWrapper nullDevice{};
 
     std::unordered_map<void*, DeviceWrapper> _devices;
 
@@ -324,7 +324,7 @@ public:
                     attrs = msg.template attrs<attr_vec_t>(0, 1);
                     if (attrs.size()) {
                         auto val = _bindDevice.getAttr(get_elem(0));
-                        msg.ack(get_elem(0), {val.begin(), val.end()});
+                        msg.ack(get_elem(0), serialized_t{val.begin(), val.end()});
                     } else {  // no attr name!
                         msg.err(std::make_error_code(AdcDeviceNetServerSessionError::ERROR_NO_PROTO_ATTRNAME));
                     }