Is it safe to call temporary object's methods?

Question

I have a function which shall return a char*. Since I have to concatenate some strings, I wrote the following line:

std::string other_text;
// ...
func((\"te         


        

Answer 1

You are allowed to call methods on temporaries, however you have to be careful about object lifetimes -- in particular, if you have a function that returns c_str() called on a temporary std::string, that string object will be destroyed when the function returns.

Your code above suffers from this problem.