Why is taking the address of a temporary illegal?

Question

I know that the code written below is illegal

void doSomething(std::string *s){}
int main()
{
     doSomething(&std::string(\"Hello World\"));
     retur         


        

Answer 1

One reason is that your example would give the method write access to the temporary, which is pointless.

The citation you provided isn't about this situation, it is a specific optimization that is permitted in declarators with initializers.