struct index_data

  {

    entry_header header; //has various public fields one of them is timestamp_

    fs::entry entry;

    bool masked;

  };

  typedef size_t timestamp_t; //in reallity this type is a class, but the error can be reproduced with this typedef as well

  timestamp_t const& timestamp(index_data const& data)

  {

    return data.header.timestamp_;

  }

  bool mask_state(index_data const& data)

  {

    return data.masked;

  }

 struct entry_data_tag {};

  typedef mi::multi_index_container

  < index_data,

    mi::indexed_by

    < mi::ordered_non_unique

      < mi::tag<entry_data_tag>

      , mi::composite_key

        < mi::global_fun<index_data const&, bool, &mask_state> //this could be a direct member reference, but I intially used fusion::map and reduced the problem to minimum

        , mi::global_fun<index_data const&, timestamp_t const&, &timestamp>

        >

      >

    >

  > entry_index;

  typedef entry_index::index<entry_data_tag>::type entry_data;

  void mask_all()

  {

    using namespace boost::lambda;

    entry_data& entries = pimpl_->indexed;

    entries.find(boost::make_tuple(false)); //!!!! this line results in an error novel by gcc 4.3

  }

The error description is:

multi_index/composite_key.hpp:638: error: no match for 'operator*' in '*x'

Does anyone have some suggestions why that happens?

With Kind Regards,

Ovanes