--- a/src/cx/linked_list.h	Sat Oct 12 19:41:04 2024 +0200
+++ b/src/cx/linked_list.h	Sun Oct 13 14:06:32 2024 +0200
@@ -47,7 +47,7 @@
 /**
  * The maximum item size that uses SBO swap instead of relinking.
  */
-extern unsigned cx_linked_list_swap_sbo_size;
+extern const unsigned cx_linked_list_swap_sbo_size;
 
 /**
  * Allocates a linked list for storing elements with \p elem_size bytes each.