id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
1315	iterator_adaptor does not work with incomplete Value types	Joaquín M López Muñoz	jeffrey.hellrung	"boost::iterator_adaptor doesn't work when the associated Value type is incomplete,
at least in MSVC++ 8.0 (my hunch is that the problem is general). The following
{{{
#include <boost/iterator/iterator_adaptor.hpp>

template<typename T>
struct my_iterator:
  boost::iterator_adaptor<my_iterator<T>,T*>
{
};

struct foo
{
  my_iterator<foo> it;
};

int main(){}

}}}
results in:
{{{
...\boost\type_traits\is_pod.hpp(34) : error C2139: 'foo' :
an undefined class is not allowed as an argument to compiler
intrinsic type trait '__is_pod'
    ...\sandbox.cpp(10) : see declaration of 'foo'
    ...\type_traits\is_pod.hpp(128) : see reference to class template
    instantiation 'boost::detail::is_pod_impl<T>' being compiled
[...]
    ...\boost\iterator\iterator_facade.hpp(652) : see reference to
    class templateinstantiation 
    'boost::detail::operator_brackets_result<Iterator,Value,Reference>'
    being compiled
    with
    [
        Iterator=my_iterator<foo>,
        Value=foo,
        Reference=foo &
    ]
[...]
}}}
Although this is probably not a bug strictly speaking, it would be fine
if iterator_adaptor could be made to work with incomplete Value types,
just as the canonical model for iterators, Value*, does."	Feature Requests	new	To Be Determined	iterator	Boost Development Trunk	Problem			duncanphilipnorman@…