#include <iostream>
#include <vector>

using namespace std;

int main(){
      vector<int> aList;

       aList.insert(10);    // iterator purposely missed here

       return 0;
}

/***
  Error message when you build with g++

test.cpp: In function 'int main()':
test.cpp:9: error: no matching function for call to 'std::vector<int, std::allocator<int> >::insert(int)'
/usr/include/c++/4.3/bits/vector.tcc:94: note: candidates are: typename std::vector<_Tp, _Alloc>::iterator std::vector<_Tp, _Alloc>::insert(__gnu_cxx::__normal_iterator<typename std::_Vector_base<_Tp, _Alloc>::_Tp_alloc_type::pointer, std::vector<_Tp, _Alloc> >, const _Tp&) [with _Tp = int, _Alloc = std::allocator<int>]
/usr/include/c++/4.3/bits/stl_vector.h:791: note:                 void std::vector<_Tp, _Alloc>::insert(__gnu_cxx::__normal_iterator<typename std::_Vector_base<_Tp, _Alloc>::_Tp_alloc_type::pointer, std::vector<_Tp, _Alloc> >, size_t, const _Tp&) [with _Tp = int, _Alloc = std::allocator<int>]

  .... really?
***/