I found #pragma warning(push) without #pragma warning(pop) difs attached Index: void_cast.hpp =================================================================== --- void_cast.hpp (revision 43370) +++ void_cast.hpp (working copy) @@ -221,6 +221,10 @@ } // namespace serialization } // namespace boost +#ifdef BOOST_MSVC +# pragma warning(pop) +#endif + #include // pops abi_suffix.hpp pragmas #endif // BOOST_SERIALIZATION_VOID_CAST_HPP