id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
5816	any_range requires copyable elements	bromeon@…	Neil Groves	"
boost::any_range attempts to copy container elements even if the ''Reference'' template parameter is a reference. This behavior prevents the use of noncopyable element types and is inconsistent with boost::sub_range and boost::iterator_range.

Short code example that doesn't compile (unless ''private:'' is commented out):
{{{
#include <boost/range/concepts.hpp> // because any_range.hpp doesn't compile alone
#include <boost/range/any_range.hpp>
#include <vector>

// X is movable, but non-copyable
class X
{
    public:
        X() {}
        X(X&&) {}
        void operator= (X&&) {}

    private:
        X(const X&);
        void operator= (const X&);
};

int main()
{
    std::vector<X> v;
    boost::any_range<X, boost::random_access_traversal_tag, X&, std::ptrdiff_t> range2 = v;
}
}}}

The problem might be in line 429 of any_iterator_wrapper.hpp, where ''reference_as_value_type'' is used for the ''Reference'' template parameter of the underlying ''any_random_access_iterator_wrapper''."	Bugs	closed	To Be Determined	range	Boost 1.47.0	Problem	fixed