This commit was manufactured by cvs2svn to create branch 'mpl_v2'.

[SVN r14323]

test/upcast.cpp

@@ -0,0 +1,19 @@
+// Copyright David Abrahams 2002. Permission to copy, use,
+// modify, sell and distribute this software is granted provided this
+// copyright notice appears in all copies. This software is provided
+// "as is" without express or implied warranty, and with no claim as
+// to its suitability for any purpose.
+#include <boost/python/cast.hpp>
+
+struct X { long x; };
+struct Y : X, PyObject {};
+
+int main()
+{
+    PyTypeObject o;
+    Y y;
+    assert(&boost::python::upcast<PyObject>(&o)->ob_refcnt == &o.ob_refcnt);
+    assert(&boost::python::upcast<PyObject>(&y)->ob_refcnt == &y.ob_refcnt);
+    return 0;
+}
+