[Boost-users] [multi_index] inherit from a multi_index

Hi, I would like to know if it is safe to create a struct and make it inherit from a multi_index. Actually I already tried but I got this error: /usr/include/boost/multi_index_container.hpp:204: warning: base class 'struct boost::multi_index::detail::header_holder, float> > > >, boost::multi_index::multi_index_container< [...] >, boost::multi_index::indexed_by, float> >, [...] >' should be explicitly initialized in the copy constructor Is it an issue due to Boost or because I'm doing something really bad? Thanks, -- Guillaume Lazzara Epita CSI 2008