Added test for Ticket #6965

[SVN r79098]

test/sequence/ref_vector.cpp

@@ -0,0 +1,64 @@
+/*=============================================================================
+    Copyright (c) 2012 Joel falcou
+
+    Distributed under 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)
+==============================================================================*/
+#include <iostream>
+#include <boost/mpl/transform.hpp>
+#include <boost/fusion/include/mpl.hpp>
+#include <boost/fusion/adapted/mpl.hpp>
+#include <boost/fusion/include/at.hpp>
+#include <boost/fusion/include/as_vector.hpp>
+#include <boost/type_traits/add_reference.hpp>
+#include <boost/fusion/include/adapt_struct.hpp>
+
+struct foo
+{
+  double d; float f; short c;
+};
+
+BOOST_FUSION_ADAPT_STRUCT(foo,(double,d)(float,f)(short,c))
+
+template<class T>
+class composite_reference
+    : public  boost::mpl::
+              transform < typename  boost::fusion::result_of::
+                                    as_vector<T>::type
+                        , boost::add_reference<boost::mpl::_>
+                        >::type
+{
+  public:
+  typedef typename  boost::mpl::
+          transform < typename  boost::fusion::result_of::
+                                    as_vector<T>::type
+                        , boost::add_reference<boost::mpl::_>
+                        >::type                                 parent;
+
+  composite_reference(T& src)       : parent( src ) {}
+  composite_reference(parent& src)  : parent(src) {}
+
+  composite_reference& operator=(T& src)
+  {
+    static_cast<parent&>(*this) = static_cast<parent&>(src);
+    return *this;
+  }
+
+  composite_reference& operator=(parent const& src)
+  {
+    static_cast<parent&>(*this) = src;
+    return *this;
+  }
+};
+
+int main(int,char**)
+{
+  foo f;
+  composite_reference<foo> ref_f(f);
+
+  boost::fusion::at_c<0>(ref_f) = 1.2;
+  boost::fusion::at_c<1>(ref_f) = 1.2f;
+  boost::fusion::at_c<2>(ref_f) = 12;
+
+  std::cout << f.d << " " << f.f << " " << f.c << "\n";
+}