#include <memory>

#include <new>

#include <iostream>

struct Tracer {

int value;

~Tracer() { std::cout << value << " destructed\n"; }

};

int main()

{

alignas(Tracer) unsigned char buffer[sizeof(Tracer) * 8];

for (int i = 0; i < 8; ++i)

new(buffer + sizeof(Tracer) * i) Tracer{i}; //manually construct objects

auto ptr = std::launder(reinterpret_cast<Tracer*>(buffer));

std::ranges::destroy_n(ptr, 8);

}