diff --git a/include/boost/container/vector.hpp b/include/boost/container/vector.hpp
index 7481061..c3baebc 100644
--- a/include/boost/container/vector.hpp
+++ b/include/boost/container/vector.hpp
@@ -122,42 +122,42 @@ class vec_iterator
 
    //Pointer like operators
    BOOST_CONTAINER_FORCEINLINE reference operator*()   const BOOST_NOEXCEPT_OR_NOTHROW
-   {  return *m_ptr;  }
+   {  BOOST_ASSERT(!!m_ptr);  return *m_ptr;  }
 
    BOOST_CONTAINER_FORCEINLINE pointer operator->()  const BOOST_NOEXCEPT_OR_NOTHROW
-   {  return ::boost::intrusive::pointer_traits<pointer>::pointer_to(this->operator*());  }
+   {  return m_ptr;  }
 
    BOOST_CONTAINER_FORCEINLINE reference operator[](difference_type off) const BOOST_NOEXCEPT_OR_NOTHROW
-   {  return m_ptr[off];   }
+   {  BOOST_ASSERT(!!m_ptr);  return m_ptr[off];  }
 
    //Increment / Decrement
    BOOST_CONTAINER_FORCEINLINE vec_iterator& operator++() BOOST_NOEXCEPT_OR_NOTHROW
-   { ++m_ptr;  return *this; }
+   {  BOOST_ASSERT(!!m_ptr); ++m_ptr;  return *this; }
 
    BOOST_CONTAINER_FORCEINLINE vec_iterator operator++(int) BOOST_NOEXCEPT_OR_NOTHROW
-   {  return vec_iterator(m_ptr++); }
+   {  BOOST_ASSERT(!!m_ptr); return vec_iterator(m_ptr++); }
 
    BOOST_CONTAINER_FORCEINLINE vec_iterator& operator--() BOOST_NOEXCEPT_OR_NOTHROW
-   {  --m_ptr; return *this;  }
+   {  BOOST_ASSERT(!!m_ptr); --m_ptr; return *this;  }
 
    BOOST_CONTAINER_FORCEINLINE vec_iterator operator--(int) BOOST_NOEXCEPT_OR_NOTHROW
-   {  return vec_iterator(m_ptr--); }
+   {  BOOST_ASSERT(!!m_ptr); return vec_iterator(m_ptr--); }
 
    //Arithmetic
    BOOST_CONTAINER_FORCEINLINE vec_iterator& operator+=(difference_type off) BOOST_NOEXCEPT_OR_NOTHROW
-   {  m_ptr += off; return *this;   }
+   {  BOOST_ASSERT(!!m_ptr); m_ptr += off; return *this;   }
 
    BOOST_CONTAINER_FORCEINLINE vec_iterator& operator-=(difference_type off) BOOST_NOEXCEPT_OR_NOTHROW
-   {  m_ptr -= off; return *this;   }
+   {  BOOST_ASSERT(!!m_ptr); m_ptr -= off; return *this;   }
 
    BOOST_CONTAINER_FORCEINLINE friend vec_iterator operator+(const vec_iterator &x, difference_type off) BOOST_NOEXCEPT_OR_NOTHROW
-   {  return vec_iterator(x.m_ptr+off);  }
+   {  BOOST_ASSERT(!!x.m_ptr); return vec_iterator(x.m_ptr+off);  }
 
    BOOST_CONTAINER_FORCEINLINE friend vec_iterator operator+(difference_type off, vec_iterator right) BOOST_NOEXCEPT_OR_NOTHROW
-   {  right.m_ptr += off;  return right; }
+   {  BOOST_ASSERT(!!right.m_ptr); right.m_ptr += off;  return right; }
 
    BOOST_CONTAINER_FORCEINLINE friend vec_iterator operator-(vec_iterator left, difference_type off) BOOST_NOEXCEPT_OR_NOTHROW
-   {  left.m_ptr -= off;  return left; }
+   {  BOOST_ASSERT(!!left.m_ptr); left.m_ptr -= off;  return left; }
 
    BOOST_CONTAINER_FORCEINLINE friend difference_type operator-(const vec_iterator &left, const vec_iterator& right) BOOST_NOEXCEPT_OR_NOTHROW
    {  return left.m_ptr - right.m_ptr;   }