[Boost-users] Problem with binary serialization using std::wstring

Subject: [Boost-users] Problem with binary serialization using std::wstring
From: Macumber, Daniel (Daniel.Macumber_at_[hidden])
Date: 2009-10-17 16:34:16

My project is using std::wstring extensively and I have been able to get both the text and xml serialization archives to work with it.  However, I am getting a stream_error when trying to deserialize objects written to a binary archive.  I think the serialization may be missing some objects.  I have tracked the problem down to serializing a std::map<std::wstring, shared_ptr<IddKey>, iStringCompare> where IddKey is a class that supports serialization and iStringCompare is:

        struct iStringCompare{
                bool operator()(const std::wstring& x, const std::wstring& y) const{
                        return boost::lexicographical_compare(x, y, boost::is_iless());
                };
        };

I have tried to replicate this problem in a simple test case to submit but have not been able to reproduce it outside of my real code.  Here is the code that serializes to a binary archive:

  boost::filesystem::wpath path = iddPath;
  path.replace_extension(L"idd.bin");

  {
    boost::filesystem::ofstream ofs(path);
    boost::archive::binary_oarchive out(ofs);
    out << iddFilePtr;
  }

  IddFilePtr newIddFilePtr;

  {
    boost::filesystem::ifstream ifs(path);
    boost::archive::binary_iarchive in(ifs);
    in >> newIddFilePtr;
  }

I am not using binary_woarchive or binary_wiarchive because they don't compile with shared_ptr serialization and I have seen that you are not really supposed to use them.  I am using the wstring versions of the text and xml archives that are working.  Does anyone have any suggestions on how to track down my problem?

Dan