#include <boost/range.hpp> #include <vector> template<typename in_t, typename out_t> void copy (in_t const& in, out_t &out) {} int main() { std::vector<int> out (2); copy (boost::make_iterator_range (out.begin(), out.begin()+2), boost::make_iterator_range (out.begin(), out.begin()+2)); } wrap/test.cc:12: error: invalid initialization of non-const reference of type 'boost::iterator_range<__gnu_cxx::__normal_iterator<int*, std::vector<int, std::allocator<int> > > >&' from a temporary of type 'boost::iterator_range<__gnu_cxx::__normal_iterator<int*, std::vector<int, std::allocator<int> > > >' wrap/test.cc:6: error: in passing argument 2 of 'void copy(const in_t&, out_t&) [with in_t = boost::iterator_range<__gnu_cxx::__normal_iterator<int*, std::vector<int, std::allocator<int> > > >, out_t = boost::iterator_range<__gnu_cxx::__normal_iterator<int*, std::vector<int, std::allocator<int> > > >]'