问移动构造函数-默认构造函数VS 2013的类型无效

EN

class Student
{
    unique_ptr<string> pName_;

public:
    Student(string name) : pName_(new string(name)) { }
    ~Student() { }
    Student(Student&&) = default;  // Here I get the error.
    void printStudentName(void) { cout << *pName_ << endl; }
};

int main(void)
{
    vector<Student> persons;

    Student p = Student("Nishith");
    persons.push_back(std::move(p));
    persons.front().printStudentName();

    return 0;
}