[MISC] Also check member types of both configs

Author: eseiler

include/sharg/detail/poison_config.hpp

@@ -59,33 +59,43 @@ struct poison_config_size_comp_validator : public detail::default_validator
  * \tparam validator_t The validator to use. Defaults to sharg::detail::poison_config_size_comp_validator.
  * \details
  * * Sizes of sharg::config and sharg::detail::poison_config are the same.
+ * * sharg::config and sharg::detail::poison_config have the same member types (except validator).
  * * sharg::detail::poison_config can be constructed with designated initializers from sharg::config's members.
  * * sharg::config can be constructed with designated initializers from sharg::detail::poison_config's members.
+ * The latter two ensure that the order of the members is the same.
  */
 template <typename validator_t = poison_config_size_comp_validator>
-concept poison_config_valid = (sizeof(poison_config) == sizeof(config<validator_t>))
-                           && requires (config<validator_t> cfg, poison_config poison_cfg) {
-                                  {
-                                      poison_config{.short_id = cfg.short_id,
-                                                    .long_id = cfg.long_id,
-                                                    .description = cfg.description,
-                                                    .default_message = cfg.default_message,
-                                                    .advanced = cfg.advanced,
-                                                    .hidden = cfg.hidden,
-                                                    .required = cfg.required,
-                                                    .validator = cfg.validator}
-                                  };
-                                  {
-                                      config<validator_t>{.short_id = poison_cfg.short_id,
-                                                          .long_id = poison_cfg.long_id,
-                                                          .description = poison_cfg.description,
-                                                          .default_message = poison_cfg.default_message,
-                                                          .advanced = poison_cfg.advanced,
-                                                          .hidden = poison_cfg.hidden,
-                                                          .required = poison_cfg.required,
-                                                          .validator = std::any_cast<validator_t>(poison_cfg.validator)}
-                                  };
-                              };
+concept poison_config_valid =
+    (sizeof(poison_config) == sizeof(config<validator_t>))
+    && std::same_as<decltype(poison_config{}.short_id), decltype(config<validator_t>{}.short_id)>
+    && std::same_as<decltype(poison_config{}.long_id), decltype(config<validator_t>{}.long_id)>
+    && std::same_as<decltype(poison_config{}.description), decltype(config<validator_t>{}.description)>
+    && std::same_as<decltype(poison_config{}.default_message), decltype(config<validator_t>{}.default_message)>
+    && std::same_as<decltype(poison_config{}.advanced), decltype(config<validator_t>{}.advanced)>
+    && std::same_as<decltype(poison_config{}.hidden), decltype(config<validator_t>{}.hidden)>
+    && std::same_as<decltype(poison_config{}.required), decltype(config<validator_t>{}.required)>
+    && requires (config<validator_t> cfg, poison_config poison_cfg) {
+           {
+               poison_config{.short_id = cfg.short_id,
+                             .long_id = cfg.long_id,
+                             .description = cfg.description,
+                             .default_message = cfg.default_message,
+                             .advanced = cfg.advanced,
+                             .hidden = cfg.hidden,
+                             .required = cfg.required,
+                             .validator = cfg.validator}
+           };
+           {
+               config<validator_t>{.short_id = poison_cfg.short_id,
+                                   .long_id = poison_cfg.long_id,
+                                   .description = poison_cfg.description,
+                                   .default_message = poison_cfg.default_message,
+                                   .advanced = poison_cfg.advanced,
+                                   .hidden = poison_cfg.hidden,
+                                   .required = poison_cfg.required,
+                                   .validator = std::any_cast<validator_t>(poison_cfg.validator)}
+           };
+       };
 
 static_assert(poison_config_valid<>, "sharg::detail::poison_config must have the same members as sharg::config!");