#include <iostream>
#include <string>
#include <string_view>

struct S {
    std::string_view data;
};

S getS(const std::string& s [[clang::lifetimebound]]) { return S{s}; }

void foo() {
    S s;
    {
        std::string str = "small scoped string";
        s = getS(str);
    }
    std::cout << s.data; // use-after-free
}