Index: intrusive/detail/mpl.hpp
===================================================================
--- intrusive/detail/mpl.hpp	(revision 77845)
+++ intrusive/detail/mpl.hpp	(working copy)
@@ -156,9 +156,11 @@
 struct is_unary_or_binary_function_impl<R (__stdcall*)()>
 {  static const bool value = true;  };
 
+#ifndef  _MANAGED
 template <typename R>
 struct is_unary_or_binary_function_impl<R (__fastcall*)()>
 {  static const bool value = true;  };
+#endif
 
 template <typename R>
 struct is_unary_or_binary_function_impl<R (__cdecl*)()>
@@ -188,9 +190,11 @@
 struct is_unary_or_binary_function_impl<R (__stdcall*)(T0)>
 {  static const bool value = true;  };
 
+#ifndef  _MANAGED
 template <typename R, class T0>
 struct is_unary_or_binary_function_impl<R (__fastcall*)(T0)>
 {  static const bool value = true;  };
+#endif
 
 template <typename R, class T0>
 struct is_unary_or_binary_function_impl<R (__cdecl*)(T0)>
@@ -220,9 +224,11 @@
 struct is_unary_or_binary_function_impl<R (__stdcall*)(T0, T1)>
 {  static const bool value = true;  };
 
+#ifndef _MANAGED
 template <typename R, class T0, class T1>
 struct is_unary_or_binary_function_impl<R (__fastcall*)(T0, T1)>
 {  static const bool value = true;  };
+#endif
 
 template <typename R, class T0, class T1>
 struct is_unary_or_binary_function_impl<R (__cdecl*)(T0, T1)>