Fix boost for MSVC as in https://github.com/boostorg/graph/pull/84

diff --git a/bundled/boost-1.62.0/include/boost/graph/named_function_params.hpp b/bundled/boost-1.62.0/include/boost/graph/named_function_params.hpp
index a9a9add6c8eed9758f8ae728291bc6d60d65cc1b..4842dc9548380f2f409b82b069bb9811c964a160 100644 (file)
--- a/bundled/boost-1.62.0/include/boost/graph/named_function_params.hpp
+++ b/bundled/boost-1.62.0/include/boost/graph/named_function_params.hpp
@@ -228,6 +228,7 @@ BOOST_BGL_DECLARE_NAMED_PARAMS
   };
 
   struct param_not_found {};
+  static param_not_found g_param_not_found;
 
   template <typename Tag, typename Args>
   struct get_param_type: 
@@ -237,7 +238,7 @@ BOOST_BGL_DECLARE_NAMED_PARAMS
   inline
   const typename lookup_named_param_def<Tag, Args, param_not_found>::type&
   get_param(const Args& p, Tag) {
-    return lookup_named_param_def<Tag, Args, param_not_found>::get(p, param_not_found());
+    return lookup_named_param_def<Tag, Args, param_not_found>::get(p, g_param_not_found);
   }
 
   template <class P, class Default>