Is it legal to pass a newly constructed object by reference to a function?

Question

Specifically, is the following legal C++?

class A{};

void foo(A*);
void bar(const A&);

int main(void)
{
    foo(&A());  // 1
    bar(A());  // 2
}

It a

Answer 1

Those A objects will only exist until execution reaches the semicolon. So, the calls are safe, but don't try to save the pointer and use it later. Also, the compiler may require bar take a const reference.