Passing rvalue argument to parameter of non-const lvalue reference

Question

I'm unsure why the following code works (VC++ 2013):

void Foo(std::vector<int> &v) { }

In main:

std::vector<int> v;
Foo(std::move(v));

Because there is no Foo defined which takes an rvalue parameter or a const lvalue reference I was under the impression the above code would fail to compile. What is going on?

Thank you

Answer 1

That code cannot work. It must horribly break under any standard-conforming compiler. You're trying to initialize a non-const reference to an lvalue from an rvalue. Nope, won't work.

It is to be noted that both GCC and Clang reject it.