Of course. And if you were writing your embedded system in C++, you'd avoid EH and other non-zero-cost features. That doesn't mean that these features aren't u

Of course. And if you were writing your embedded system in C++, you'd avoid EH and other non-zero-cost features. That doesn't mean that these features aren't useful in other contexts. I submit that the world of C and C++ programming is vastly larger and more diverse than the world of interrupt handlers and embedded systems. ...But as I pointed out in a sibling comment, I was never defending function-scoped defer. I agree with you. I was pointing out that the implementation of such a feature wouldn't require excessive stack allocation.