#include <boost/multi_index_container.hpp>
#include <boost/multi_index/mem_fun.hpp>
#include <boost/multi_index/ordered_index.hpp>

 
using boost::multi_index_container;
using namespace ::boost::multi_index;
 
class Entry

{
        private:
                int size;
        public:
                Entry(int s) : size(s) {}

                int getSize() const { return size; }
};
 
typedef multi_index_container<
        Entry,
        indexed_by<

                ordered_non_unique<BOOST_MULTI_INDEX_MEM_FUN(Entry, int, getSize) >  // line 23
        >
> EntryCollection;
 
void main() {

        EntryCollection entries;
        Entry a(3);
        entries.insert(a);  // line 33
}