Subject: [Boost-bugs] [Boost C++ Libraries] #6051: iT::value_type should use iterator_traits (needed for SunCC/stlport4 compatibility)
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2011-10-24 18:45:23
#6051: iT::value_type should use iterator_traits (needed for SunCC/stlport4
compatibility)
------------------------------------------------------+---------------------
Reporter: Fedor Sergeev <Fedor.Sergeev@â¦> | Owner: ljsimons
Type: Bugs | Status: new
Milestone: To Be Determined | Component: polygon
Version: Boost 1.47.0 | Severity: Problem
Keywords: |
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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'''
-- Ticket URL: <https://svn.boost.org/trac/boost/ticket/6051> Boost C++ Libraries <http://www.boost.org/> Boost provides free peer-reviewed portable C++ source libraries.
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