[MathMonkeyMan]

I ran into this recently writing some C++20 coroutines. The protocol for delivering values from a coroutine that was previously suspended has two flavors: one for values and one for void. My initial draft just implemented the value version and used a struct VoidTODO {} where void should be.

It's too late now. void pointers are used as a pun to mean "type wildcard." If void were a real thing that could have a size and address, that wouldn't work anymore.

[rerdavies]

Yes!! Been there done that. Two flavors of EVERYTHING: one to deal with functions that return values; and one to deal with void functions. It's awful.