entity->declaration.storage_class = STORAGE_CLASS_EXTERN;
entity->declaration.declared_storage_class = STORAGE_CLASS_EXTERN;
entity->declaration.type = function_type;
entity->declaration.implicit = true;
entity->declaration.storage_class = STORAGE_CLASS_EXTERN;
entity->declaration.declared_storage_class = STORAGE_CLASS_EXTERN;
entity->declaration.type = function_type;
entity->declaration.implicit = true;