Ticket #5993: range_accumulate_bug.cpp

#include <boost/noncopyable.hpp>
#include <boost/range/numeric.hpp>

#include <vector>

template <class T>
class NCVec : boost::noncopyable
{
    std::vector<T> _actual;

public:
    typedef typename std::vector<T>::const_iterator const_iterator;

    const_iterator begin() const
    {
        return _actual.begin();
    }

    const_iterator end() const
    {
        return _actual.end();
    }

    void emplace_back(T&& t)
    {
        _actual.emplace_back(std::forward<T>(t));
    }
};


void f()
{
    NCVec<int> a;

    boost::accumulate(a, 0);
}