std::is_function does not work on rvalue reference types by Erik Olofsson

Compile code below for reproduction. Uncomment block below for fix.

#include <type_traits>

// Uncomment to make compile
/*
namespace std
{
    template<class _Ty>
        struct is_function<_Ty&&>
        : false_type
        {    // determine whether _Ty is a function
        };
}
*/

using namespace std;
typedef int && CTestRef;
static_assert(!is_function<CTestRef>::value, "");