id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
7827	[range] cant compile r | indexed to range algorithm	Akira Takahashi <faithandbrave@…>	Neil Groves	"follow code is compile error:
{{{
#include <iostream>
#include <vector>
#include <boost/range/adaptor/indexed.hpp>
#include <boost/range/algorithm/min_element.hpp>

int main()
{
    std::vector<int> v = {3, 1, 4};
    auto m = boost::min_element(v | boost::adaptors::indexed(0));
    auto i = m.index();
    std::cout << i << std::endl;
    std::cout << *m << std::endl;
}
}}}
{{{
In file included from D:\GitHub\Boost\boost-svn/boost/range/concepts.hpp:19:0,
                 from D:\GitHub\Boost\boost-svn/boost/range/algorithm/equal.hpp:14,
                 from D:\GitHub\Boost\boost-svn/boost/range/iterator_range_core.hpp:29,
                 from D:\GitHub\Boost\boost-svn/boost/range/iterator_range.hpp:13,
                 from D:\GitHub\Boost\boost-svn/boost/range/adaptor/indexed.hpp:21,
                 from C:\language\cpp\main.cpp:3:
D:\GitHub\Boost\boost-svn/boost/concept_check.hpp: In instantiation of 'boost::DefaultConstructible<TT>::~DefaultConstructible() [with TT = boost::range_detail::indexed_iterator<__gnu_cxx::__normal_iterator<int*, std::vector<int> > >]':
D:\GitHub\Boost\boost-svn/boost/concept/usage.hpp:22:29:   required from 'boost::concepts::usage_requirements<Model>::~usage_requirements() [with Model = boost::DefaultConstructible<boost::range_detail::indexed_iterator<__gnu_cxx::__normal_iterator<int*, std::vector<int> > > >]'
D:\GitHub\Boost\boost-svn/boost/concept/detail/general.hpp:38:28:   required from 'static void boost::concepts::requirement<boost::concepts::failed************ Model::************>::failed() [with Model = boost::concepts::usage_requirements<boost::DefaultConstructible<boost::range_detail::indexed_iterator<__gnu_cxx::__normal_iterator<int*, std::vector<int> > > > >]'
...
}}}

Because `indexed_iterator` hasn't default constructor.
I attach patch."	Bugs	closed	To Be Determined	range	Boost 1.52.0	Problem	fixed