#include <tuple>
#include <string>
#include <string.h>
template<typename T>
class foo
{
public:
    foo(T storage) : storage_(std::move(storage)) {}
private:
    T storage_;
};

int main()
{
    char* s2 = strdup("123");

    foo f { std::make_tuple(12,123,"1234") };

    foo f2 { std::make_tuple("321", s2) };

    free(s2);
    // still want to keep s2 stored in f2
}