C++ Typename

#include<vector>
#include<numeric>
#include<iostream>
using namespace std;
template < class T>
class xlist
{
private:
    //typename vector<T>::iterator iter;
    vector<T>::iterator iter;
    vector<T> vi;
};

   
int main()
{
    xlist<int> x;
}

Under vc8:

1>c:\users\bzhu\documents\visual studio 2005\projects\t\t\t.cpp(9) : warning C4346: ‘std::vector::iterator’ : dependent name is not a type 1> prefix with ’typename’ to indicate a type 1> c:\users\bzhu\documents\visual studio 2005\projects\t\t\t.cpp(11) : see reference to class template instantiation ‘xlist’ being compiled 1>c:\users\bzhu\documents\visual studio 2005\projects\t\t\t.cpp(9) : error C2146: syntax error : missing ‘;’ before identifier ‘iter’ 1>c:\users\bzhu\documents\visual studio 2005\projects\t\t\t.cpp(9) : error C4430: missing type specifier - int assumed. Note: C++ does not support default-int

But under gcc it works well .Which is the c++ standard?