Returning const reference to local variable from a function

Question

I have some questions on returning a reference to a local variable from a function:

class A {
public:
    A(int xx)
    : x(xx)
    {
        printf(\"A::A()         


        

Answer 1

I think the main problem is that you are not returning temporaries at all, you should

return A(5);

rather than

A a(5);
return a;

Otherwise you are returning local variable address, not temporary. And the temporary to const reference only works for temporaries.

I think its explained here: temporary to const reference