CI fixes

Author: franzpoeschel

include/openPMD/RecordComponent.hpp

@@ -112,21 +112,6 @@ namespace internal
     };
     template <typename, typename>
     class BaseRecordData;
-
-    struct HomogenizeExtents
-    {
-        std::deque<RecordComponent> without_extent;
-        std::optional<Extent> retrieved_extent;
-        bool verify_homogeneous_extents = true;
-
-        explicit HomogenizeExtents();
-        HomogenizeExtents(bool verify_homogeneous_extents);
-
-        void check_extent(Attributable const &callsite, RecordComponent &);
-        auto merge(Attributable const &callsite, HomogenizeExtents)
-            -> HomogenizeExtents &;
-        void homogenize(Attributable const &callsite) &&;
-    };
 } // namespace internal
 
 template <typename>
@@ -559,6 +544,26 @@ OPENPMD_protected
     void verifyChunk(Datatype, Offset const &, Extent const &) const;
 }; // RecordComponent
 
+namespace internal
+{
+    // Must put this after the definition of RecordComponent due to the
+    // deque<RecordComponent>
+    struct HomogenizeExtents
+    {
+        std::deque<RecordComponent> without_extent;
+        std::optional<Extent> retrieved_extent;
+        bool verify_homogeneous_extents = true;
+
+        explicit HomogenizeExtents();
+        HomogenizeExtents(bool verify_homogeneous_extents);
+
+        void check_extent(Attributable const &callsite, RecordComponent &);
+        auto merge(Attributable const &callsite, HomogenizeExtents)
+            -> HomogenizeExtents &;
+        void homogenize(Attributable const &callsite) &&;
+    };
+} // namespace internal
+
 } // namespace openPMD
 
 #include "RecordComponent.tpp"

include/openPMD/backend/Attributable.hpp

@@ -239,7 +239,7 @@ class Attributable
     friend T &internal::makeOwning(T &self, Series);
     friend class StatefulSnapshotsContainer;
     friend class internal::AttributableData;
-    friend class internal::HomogenizeExtents;
+    friend struct internal::HomogenizeExtents;
 
 protected:
     // tag for internal constructor