You can just pop the second stack at each function return, though that does limit its use to only really scratch-space for dynamically sized objects. Like this:

You can just pop the second stack at each function return, though that does limit its use to only really scratch-space for dynamically sized objects. Like this: https://nullprogram.com/blog/2023/09/27/ https://nullprogram.com/blog/2023/09/27/. “Arenas” are passed by value so their end pointer will auto reset when the function returns.