id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
6103	boost::range_detail vs. boost::range::range_detail compiler error	zeratul976@…	Neil Groves	"The following code:


{{{
#include <boost/range/algorithm/search_n.hpp>
#include <boost/range/join.hpp>
}}}

Produces the following compiler errors:

{{{
boost/range/join.hpp:44:39: error: expected template-name before '<' token
boost/range/join.hpp:44:39: error: expected '{' before '<' token
boost/range/join.hpp:44:39: error: expected unqualified-id before '<' token
}}}

The reason is that:
  * boost/range/algorithm/search_n.hpp introduces the namespace boost::range::range_detail
  * boost/range/join.hpp defines joined_type in boost::range_detail
  * boost/range/join.hpp then references range_detail::joined_type in boost::range, expecting it to resolve to boost::range_detail::joined_type, but due to the declaration in search_n.hpp, it resolves to boost::range::range_detail::joined_type (which does not exist)

This is easily fixable by fully qualifying boost::range_detail::joined_type in join.hpp, or by getting rid of the namespace boost::range::range_detail in search_n.hpp and using boost::range_detail instead."	Bugs	closed	To Be Determined	range	Boost 1.47.0	Problem	fixed