Is it possible to enforce a dependency between fields of a "config struct"?

[cancername]

@pierrelgol

So basically the config options for the linked list that I would like would be to configure the use of a freelist as a buffer. So when you remove a value, you don’t destroy the node instead it’s store in the freelist and same thing when you want to insert instead of allocating for a node you simply reuse the free ones in the freelist, what I want to configure is the load factor meaning how many nodes should be kept free in regard to the size of the list and the minimum amount of node to allocate upfront at the initialization.

Possibly related: Reduce large allocation mmap calls: free list allocator