update

Author: soburi

alt_core_api/tools/protoc_gen_arduinoif/templates/ifc_header.hpp.j2

@@ -19,7 +19,7 @@ typedef enum {{ enum_desc.name }} {
 } {{ enum_desc.name }};
 
 {% endfor %}
-class {{ ifc_name }}{% if base_ifc_class_names %} : {% for base_class in base_ifc_class_names %}public {{ base_class }}{% if not loop.last %}, {% endif %}{% endfor %}{% endif %} {
+class {{ ifc_name }}{% if base_ifc_class_names %} : {% for base_class in base_ifc_class_names %}virtual public {{ base_class }}{% if not loop.last %}, {% endif %}{% endfor %}{% endif %} {
 public:
   virtual ~{{ ifc_name }}() = default;