[Bug c++/104872] Memory corruption in Coroutine with POD type

[benni.buch at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104872

--- Comment #1 from Benjamin Buch <benni.buch at gmail dot com> ---
More minimal version:

https://godbolt.org/z/aEv13e38a

```cpp
#include <coroutine>
#include <iostream>
#include <string_view>


using namespace std::literals;


class logging_string{
public:
    logging_string(std::string_view text) :text_(text) {
        std::cout << "       view: " << this << " " << text_ << std::endl;
    }

    logging_string(logging_string&& other) {
        std::cout << "       move: " << this << " <= " << &other << " new <= "
<< other.text_ << std::endl;
        text_ = std::move(other.text_);
    }

    ~logging_string(){
        std::cout << "   destruct: " << this << " " << text_ << std::endl;
    }

    logging_string& operator=(logging_string&& other){
        std::cout << "move-assign: " << this << " <= " << &other << " " <<
text_ << " <= " << other.text_ << std::endl;
        text_ = std::move(other.text_);
        return *this;
    }

private:
    std::string text_;
};

struct wrapper{
//     wrapper() = default;
//     wrapper(std::string_view text) :filename(text) {}
//     wrapper(wrapper&&) = default;
//     wrapper& operator=(wrapper&&) = default;
//     ~wrapper() = default;

    logging_string filename;
};


struct generator{
    struct promise_type;
    using handle_type = std::coroutine_handle<promise_type>;

    struct promise_type{
        wrapper value{"default"sv};

        generator get_return_object(){
            return handle_type::from_promise(*this);
        }

        std::suspend_always initial_suspend(){
            return {};
        }

        std::suspend_always final_suspend()noexcept{
            return {};
        }

        void unhandled_exception(){}

        std::suspend_always yield_value(wrapper&& new_value){
            value = std::move(new_value);
            return {};
        }
    };

    generator(handle_type h)
        : handle(h)
        {}

    ~generator(){
        handle.destroy();
    }

    handle_type handle;
};


static generator generate(){
    co_yield {"generate"sv};
}


int main(){
    auto gen = generate();
    gen.handle();
}
```