Hello,

I was reading C++ Faq Second Edition , faq number 32.08 .

FAQ says that parameter passed by const reference and returned by const reference can cause dangling reference.

But it is ok if parameter is passed by reference and returned by reference.

I got it that it is unsafe in case of const reference but how is it safe in case when parameter is non const reference.

Last line of FAQ says "Note that if a function accepts a parameter by non-const reference (for example, f(string& s)), returning a copy of this reference parameter is safe because a temporary cannot be passed by non-const reference."

Need some insight on this!!