[Boost-users] serialization of unordered_map

I am struggling with getting serialization to work with unordered_map. I have found someone else's header file for that purpose and modified it so the compilation goes through without errors, however I'm getting segfault when attempting to run the executable. The header file is attached, any help will be most appreciated. Best regards, Igor P.S. I believe the original code is from René Bürgel who asked for it to be included into serialization library back in 2007.