Pointer size doubles, so any data structure (linked list, tree, etc, etc) which uses raw pointers directly will need more memory to store the same items. Norma

Pointer size doubles, so any data structure (linked list, tree, etc, etc) which uses raw pointers directly will need more memory to store the same items. Normal way of negating this increase is to use uint32_t offset items into a master array of the items the pointers represent, which reduces the size again and has a side benefit of possibly making the items more coherent (localised) in memory.