diff -ru boost.orig/boost/type_index/stl_type_index.hpp boost/boost/type_index/stl_type_index.hpp
--- foo/misc/boost.orig/boost/type_index/stl_type_index.hpp	2015-06-21 22:16:46.000000000 +0200
+++ foo/misc/boost/boost/type_index/stl_type_index.hpp	2015-07-16 22:55:42.886944806 +0200
@@ -174,7 +174,7 @@
 
 
 inline std::size_t stl_type_index::hash_code() const BOOST_NOEXCEPT {
-#if _MSC_VER > 1600 || (__GNUC__ == 4 && __GNUC_MINOR__ > 5 && defined(__GXX_EXPERIMENTAL_CXX0X__))
+#if (defined(_MSC_VER) && _MSC_VER > 1600) || (__GNUC__ == 4 && __GNUC_MINOR__ > 5 && defined(__GXX_EXPERIMENTAL_CXX0X__))
     return data_->hash_code();
 #else
     return boost::hash_range(raw_name(), raw_name() + std::strlen(raw_name()));