diff -r d4baf4dd55c3 -r fe0d69d72bcd src/cx/tree.h
--- a/src/cx/tree.h	Thu May 23 19:29:14 2024 +0200
+++ b/src/cx/tree.h	Thu May 23 20:29:28 2024 +0200
@@ -58,7 +58,10 @@
  * @see CxIterator
  */
 typedef struct cx_tree_iterator_s {
-    CX_ITERATOR_BASE
+    /**
+     * Base members.
+     */
+    CX_ITERATOR_BASE;
     /**
      * Indicates whether the subtree below the current node shall be skipped.
      */
@@ -154,7 +157,10 @@
  * @see CxIterator
  */
 typedef struct cx_tree_visitor_s {
-    CX_ITERATOR_BASE
+    /**
+     * Base members.
+     */
+    CX_ITERATOR_BASE;
     /**
      * Indicates whether the subtree below the current node shall be skipped.
      */