diff -up boost_1_57_0/boost/mpl/print.hpp\~ boost_1_57_0/boost/mpl/print.hpp

--- boost_1_57_0/boost/mpl/print.hpp~	2014-07-09 23:12:31.000000000 +0200

+++ boost_1_57_0/boost/mpl/print.hpp	2015-01-20 12:44:59.621400948 +0100

@@ -52,16 +52,15 @@ struct print

     enum { n = sizeof(T) + -1 };

 #elif defined(__MWERKS__)

     void f(int);

-#else 

-    enum {

-        n =

-# if defined(__EDG_VERSION__)

-           aux::dependent_unsigned<T>::value > -1

-# else 

-           sizeof(T) > -1

-# endif 

-        };

-#endif 

+#elif defined(__EDG_VERSION__)

+    enum { n = aux::dependent_unsigned<T>::value > -1 };

+#elif defined(BOOST_GCC)

+    enum { n1 };

+    enum { n2 };

+    enum { n = n1 != n2 };

+#else

+    enum { n = sizeof(T) > -1 };

+#endif

 };

 #if defined(BOOST_MSVC)

Diff finished.  Tue Jan 20 12:45:03 2015