You can certainly implement generational pointers in C++ code without further language-level support (given that you’re using your own handmade object pools). D

You can certainly implement generational pointers in C++ code without further language-level support (given that you’re using your own handmade object pools). Don’t know if this can get to the STL though, since it requires a malloc (or object pool) implementation tailor-made for it. I’ve implemented this in my current C++ game engine, and works wondrously well. You can even pack that generational index in the unused 16-bits of a 64-bit pointer, if you have further constraints (like a C library only allowing void* as userdata)!