--- /usr/include/boost/enable_shared_from_this.hpp	2004-07-25 20:31:58.000000000 -0400
+++ ./enable_shared_from_this.hpp	2007-02-06 16:34:52.000000000 -0500
@@ -21,7 +21,7 @@
 namespace boost
 {
 
-template<class T> class enable_shared_from_this
+template<class T, int = 0> class enable_shared_from_this
 {
 protected:
 
@@ -43,6 +43,7 @@
     }
 
 public:
+    void postconstruct() {}
 
     shared_ptr<T> shared_from_this()
     {
@@ -62,6 +63,30 @@
     mutable weak_ptr<_internal_element_type> _internal_weak_this;
 };
 
+template<class T> class enable_shared_from_this<T, 1>: public enable_shared_from_this<T, 0>
+{
+protected:
+
+    enable_shared_from_this()
+    {
+    }
+
+    enable_shared_from_this(enable_shared_from_this const &)
+    {
+    }
+
+    enable_shared_from_this & operator=(enable_shared_from_this const &)
+    {
+        return *this;
+    }
+
+    virtual ~enable_shared_from_this()
+    {
+    }
+
+public:
+    virtual void postconstruct() {}
+};
 } // namespace boost
 
 #endif  // #ifndef BOOST_ENABLE_SHARED_FROM_THIS_HPP_INCLUDED