diff --git a/example/demo_dll_a.hpp b/example/demo_dll_a.hpp
new file mode 100644
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+++ b/example/demo_dll_a.hpp
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+#ifndef BOOST_SERIALIZATION_TEST_A_HPP
+#define BOOST_SERIALIZATION_TEST_A_HPP
+
+// MS compatible compilers support #pragma once
+#if defined(_MSC_VER)
+# pragma once
+#endif
+
+/////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8
+// A.hpp    simple class test
+
+// (C) Copyright 2002 Robert Ramey - http://www.rrsd.com . 
+// Use, modification and distribution is subject to the Boost Software
+// License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org for updates, documentation, and revision history.
+
+#include <cassert>
+#include <cstdlib> // for rand()
+#include <cmath> // for fabs()
+#include <cstddef> // size_t
+#include <boost/math/special_functions/next.hpp>
+
+#include <boost/config.hpp>
+#if defined(BOOST_NO_STDC_NAMESPACE)
+namespace std{
+    using ::rand; 
+    using ::fabs;
+    using ::size_t;
+}
+#endif
+
+//#include <boost/test/test_exec_monitor.hpp>
+#include <boost/limits.hpp>
+#include <boost/cstdint.hpp>
+
+#include <boost/detail/workaround.hpp>
+#if BOOST_WORKAROUND(BOOST_DINKUMWARE_STDLIB, == 1)
+#include <boost/archive/dinkumware.hpp>
+#endif
+
+#include <boost/serialization/nvp.hpp>
+#include <boost/serialization/string.hpp>
+#include <boost/serialization/access.hpp>
+
+class A
+{
+private:
+    friend class boost::serialization::access;
+    // note: from an aesthetic perspective, I would much prefer to have this
+    // defined out of line.  Unfortunately, this trips a bug in the VC 6.0
+    // compiler. So hold our nose and put it her to permit running of tests.
+    template<class Archive>
+    void serialize(
+        Archive &ar,
+        const unsigned int /* file_version */
+    ){
+        ar & BOOST_SERIALIZATION_NVP(b);
+        #ifndef BOOST_NO_INT64_T
+        ar & BOOST_SERIALIZATION_NVP(f);
+        ar & BOOST_SERIALIZATION_NVP(g);
+        #endif
+        #if BOOST_WORKAROUND(__BORLANDC__,  <= 0x551 )
+            int i;
+            if(BOOST_DEDUCED_TYPENAME Archive::is_saving::value){
+                i = l;
+                ar & BOOST_SERIALIZATION_NVP(i);
+            }
+            else{
+                ar & BOOST_SERIALIZATION_NVP(i);
+                l = i;
+            }
+        #else
+            ar & BOOST_SERIALIZATION_NVP(l);
+        #endif
+        ar & BOOST_SERIALIZATION_NVP(m);
+        ar & BOOST_SERIALIZATION_NVP(n);
+        ar & BOOST_SERIALIZATION_NVP(o);
+        ar & BOOST_SERIALIZATION_NVP(p);
+        ar & BOOST_SERIALIZATION_NVP(q);
+        #ifndef BOOST_NO_CWCHAR
+        ar & BOOST_SERIALIZATION_NVP(r);
+        #endif
+        ar & BOOST_SERIALIZATION_NVP(c);
+        ar & BOOST_SERIALIZATION_NVP(s);
+        ar & BOOST_SERIALIZATION_NVP(t);
+        ar & BOOST_SERIALIZATION_NVP(u);
+        ar & BOOST_SERIALIZATION_NVP(v);
+        ar & BOOST_SERIALIZATION_NVP(w);
+        ar & BOOST_SERIALIZATION_NVP(x);
+        ar & BOOST_SERIALIZATION_NVP(y);
+        #ifndef BOOST_NO_STD_WSTRING
+        ar & BOOST_SERIALIZATION_NVP(z);
+        #endif
+    }
+    bool b;
+    #ifndef BOOST_NO_INT64_T
+    boost::int64_t f;
+    boost::uint64_t g;
+    #endif
+    enum h {
+        i = 0,
+        j,
+        k
+    } l;
+    std::size_t m;
+    signed long n;
+    unsigned long o;
+    signed  short p;
+    unsigned short q;
+    #ifndef BOOST_NO_CWCHAR
+    wchar_t r;
+    #endif
+    char c;
+    signed char s;
+    unsigned char t;
+    signed int u;
+    unsigned int v;
+    float w;
+    double x;
+    std::string y;
+    #ifndef BOOST_NO_STD_WSTRING
+    std::wstring z;
+    #endif
+public:
+    A();
+    bool operator==(const A &rhs) const;
+    bool operator!=(const A &rhs) const;
+    bool operator<(const A &rhs) const; // used by less
+    // hash function for class A
+    operator std::size_t () const;
+    friend std::ostream & operator<<(std::ostream & os, A const & a);
+    friend std::istream & operator>>(std::istream & is, A & a);
+};
+
+//BOOST_TEST_DONT_PRINT_LOG_VALUE(A);
+
+template<class S>
+void randomize(S &x)
+{
+    assert(0 == x.size());
+    for(;;){
+        unsigned int i = std::rand() % 27;
+        if(0 == i)
+            break;
+        x += static_cast<BOOST_DEDUCED_TYPENAME S::value_type>('a' - 1 + i);
+    }
+}
+
+template<class T>
+void accumulate(std::size_t & s, const T & t){
+    const char * tptr = (const char *)(& t);
+    unsigned int count = sizeof(t);
+    while(count-- > 0){
+        s += *tptr++;
+    }
+}
+
+A::operator std::size_t () const {
+    std::size_t retval = 0;
+    accumulate(retval, b);
+    #ifndef BOOST_NO_INT64_T
+    accumulate(retval, f);
+    accumulate(retval, g);
+    #endif
+    accumulate(retval, l);
+    accumulate(retval, m);
+    accumulate(retval, n);
+    accumulate(retval, o);
+    accumulate(retval, p);
+    accumulate(retval, q);
+    #ifndef BOOST_NO_CWCHAR
+    accumulate(retval, r);
+    #endif
+    accumulate(retval, c);
+    accumulate(retval, s);
+    accumulate(retval, t);
+    accumulate(retval, u);
+    accumulate(retval, v);
+    return retval;
+}
+
+inline A::A() :
+    b(true),
+    #ifndef BOOST_NO_INT64_T
+    f(std::rand() * std::rand()),
+    g(std::rand() * std::rand()),
+    #endif
+    l(static_cast<enum h>(std::rand() % 3)),
+    m(std::rand()),
+    n(std::rand()),
+    o(std::rand()),
+    p(std::rand()),
+    q(std::rand()),
+    #ifndef BOOST_NO_CWCHAR
+    r(std::rand()),
+    #endif
+    c(std::rand()),
+    s(std::rand()),
+    t(std::rand()),
+    u(std::rand()),
+    v(std::rand()),
+    w((float)std::rand()),
+    x((double)std::rand())
+{
+    randomize(y);
+    #ifndef BOOST_NO_STD_WSTRING
+    randomize(z);
+    #endif
+}
+
+inline bool A::operator==(const A &rhs) const
+{
+    if(b != rhs.b)
+        return false;
+    if(l != rhs.l)
+        return false;
+    #ifndef BOOST_NO_INT64_T
+    if(f != rhs.f)
+        return false;
+    if(g != rhs.g)
+        return false;
+    #endif
+    if(m != rhs.m)
+        return false;
+    if(n != rhs.n)
+        return false;
+    if(o != rhs.o)
+        return false;
+    if(p != rhs.p)
+        return false; 
+    if(q != rhs.q)
+        return false;
+    #ifndef BOOST_NO_CWCHAR
+    if(r != rhs.r)
+        return false; 
+    #endif
+    if(c != rhs.c)
+        return false;
+    if(s != rhs.s)
+        return false;
+    if(t != rhs.t)
+        return false;
+    if(u != rhs.u)
+        return false; 
+    if(v != rhs.v)
+        return false; 
+    if(std::abs( boost::math::float_distance(w, rhs.w)) > 1)
+        return false;
+    if(std::abs( boost::math::float_distance(x, rhs.x)) > 1)
+        return false;
+    if(0 != y.compare(rhs.y))
+        return false;
+    #ifndef BOOST_NO_STD_WSTRING
+    if(0 != z.compare(rhs.z))
+        return false;
+    #endif      
+    return true;
+}
+
+inline bool A::operator!=(const A &rhs) const
+{
+    return ! (*this == rhs);
+}
+
+inline bool A::operator<(const A &rhs) const
+{
+    if(b != rhs.b)
+        return b < rhs.b;
+    #ifndef BOOST_NO_INT64_T
+    if(f != rhs.f)
+        return f < rhs.f;
+    if(g != rhs.g)
+        return g < rhs.g;
+    #endif
+    if(l != rhs.l )
+        return l < rhs.l;
+    if(m != rhs.m )
+        return m < rhs.m;
+    if(n != rhs.n )
+        return n < rhs.n;
+    if(o != rhs.o )
+        return o < rhs.o;
+    if(p != rhs.p )
+        return p < rhs.p;
+    if(q != rhs.q )
+        return q < rhs.q;
+    #ifndef BOOST_NO_CWCHAR
+    if(r != rhs.r )
+        return r < rhs.r;
+    #endif
+    if(c != rhs.c )
+        return c < rhs.c;
+    if(s != rhs.s )
+        return s < rhs.s;
+    if(t != rhs.t )
+        return t < rhs.t;
+    if(u != rhs.u )
+        return u < rhs.u; 
+    if(v != rhs.v )
+        return v < rhs.v;
+    if(w != rhs.w )
+        return w < rhs.w; 
+    if(x != rhs.x )
+        return x < rhs.x;
+    int i = y.compare(rhs.y);
+    if(i !=  0 )
+        return i < 0;
+    #ifndef BOOST_NO_STD_WSTRING
+    int j = z.compare(rhs.z);
+    if(j !=  0 )
+        return j < 0;
+    #endif
+    return false;
+}
+
+#endif // BOOST_SERIALIZATION_TEST_A_HPP