id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
6051	iT::value_type should use iterator_traits (needed for SunCC/stlport4 compatibility)	Fedor Sergeev <Fedor.Sergeev@…>	Lucanus Simonson	"polygon/gtl_boost_unit_test fails to compile with SunCC giving among anything else the following diagnostics:

{{{
] sunCC -library=stlport4 -I. libs/polygon/test/gtl_boost_unit_test.cpp -c
...
""./boost/polygon/polygon_traits.hpp"", line 1039: Error: boost::polygon::iT is not a namespace or class name.
""./boost/polygon/polygon_traits.hpp"", line 1067:     Where: While instantiating ""boost::polygon::point_sequence_is_45<const boost::polygon::point_data<int>*>(const boost::polygon::point_data<int>*, const boost
""./boost/polygon/polygon_traits.hpp"", line 1067:     Where: Instantiated from boost::polygon::is_45<boost::polygon::polygon_45_data<int>>(const boost::polygon::polygon_45_data<int>&).
""libs/polygon/test/gtl_boost_unit_test.cpp"", line 1537:     Where: Instantiated from non-template code.
""./boost/polygon/polygon_traits.hpp"", line 1039: Error: value_type is not defined.
""./boost/polygon/polygon_traits.hpp"", line 1067:     Where: While instantiating ""boost::polygon::point_sequence_is_45<const boost::polygon::point_data<int>*>(const boost::polygon::point_data<int>*, const boost
""./boost/polygon/polygon_traits.hpp"", line 1067:     Where: Instantiated from boost::polygon::is_45<boost::polygon::polygon_45_data<int>>(const boost::polygon::polygon_45_data<int>&).
""libs/polygon/test/gtl_boost_unit_test.cpp"", line 1537:     Where: Instantiated from non-template code.
""./boost/polygon/point_traits.hpp"", line 16: Error: boost::polygon::T is not a namespace or class name.
""./boost/polygon/polygon_traits.hpp"", line 1040:     Where: While specializing ""boost::polygon::point_traits<int>"".
""./boost/polygon/polygon_traits.hpp"", line 1040:     Where: Instantiated from boost::polygon::point_sequence_is_45<const boost::polygon::point_data<int>*>(const boost::polygon::point_data<int>*, const boost::p
""./boost/polygon/polygon_traits.hpp"", line 1067:     Where: Instantiated from boost::polygon::is_45<boost::polygon::polygon_45_data<int>>(const boost::polygon::polygon_45_data<int>&).
""libs/polygon/test/gtl_boost_unit_test.cpp"", line 1537:     Where: Instantiated from non-template code.
...
]
}}}

That all happens because boost/polygon in a couple of places uses iT::value_type construct, which is a non-standard way to query value_type iterator trait. It works with g++, but it does not work with stlport (at least with stlport4 shipped with SunCC).

{{{
] git grep iT::value_type -- boost/polygon
boost/polygon/polygon_45_set_data.hpp:    typedef typename iT::value_type Point;
boost/polygon/polygon_traits.hpp:    typedef typename iT::value_type Point;
]
}}}

These should be converted to a standard way of querying iterator traits used throught all the boost (and polygon in particular) - '''std::iterator_traits<iT>::value_type'''
"	Bugs	closed	To Be Determined	polygon	Boost 1.47.0	Problem	fixed