Lifetime of return value in comma separated statements
struct S
{
    S() { /* called 1st */ }
    ~S() { /* called 3rd */ }
};

boost::shared_ptr<S> f()
{
    return boost::shared_ptr<S>(new S);
}

int second() { return 0; /* called 2nd */ }

int test()
{
    return (f(), second());
}