Ticket #6720: main.cpp

#include <memory>
#include <boost/intrusive/unordered_set.hpp>

namespace bi=boost::intrusive;

class Item : public bi::unordered_set_base_hook<bi::link_mode<bi::safe_link>>
{

public:
        struct hash
        {
                size_t operator()(const Item &s) const
                {
                        return /* ... */ 0;
                }
        };
};

void main()
{
        typedef bi::unordered_set<
                Item,
                bi::constant_time_size<false>,
                bi::hash<Item::hash>
        > map_type;

        std::unique_ptr<map_type::bucket_type[]> buckets;
        std::unique_ptr<map_type> set;
        buckets.reset(new map_type::bucket_type[50]);
        set.reset(new map_type(map_type::bucket_traits(buckets.get(),50)));

        // ... use the set

        set->clear_and_dispose([](Item *ptr) { delete ptr; });
}