On 03.08.23 16:33, Marshall Clow via Boost wrote:
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-- The Release managers
Sorry for the very late report, but I think I found a serious regression in either Boost.Stl_interfaces or in Boost.Range. Some iterators generated by Boost.Stl_interfaces are not accepted by Boost.Range. This is a regression from Boost 1.82. Minimal example program, with basic_input_iter taken directly from a Boost.Stl_interfaces test: #include "boost/stl_interfaces/iterator_interface.hpp" #include "boost/range/iterator_range.hpp" struct basic_input_iter : boost::stl_interfaces::iterator_interface< #if !BOOST_STL_INTERFACES_USE_DEDUCED_THIS basic_input_iter, #endif std::input_iterator_tag, int> { basic_input_iter() : it_(nullptr) {} basic_input_iter(int * it) : it_(it) {} int & operator*() const noexcept { return *it_; } basic_input_iter & operator++() noexcept { ++it_; return *this; } friend bool operator==(basic_input_iter lhs, basic_input_iter rhs) noexcept { return lhs.it_ == rhs.it_; } using base_type = boost::stl_interfaces::iterator_interface< #if !BOOST_STL_INTERFACES_USE_DEDUCED_THIS basic_input_iter, #endif std::input_iterator_tag, int>; using base_type::operator++; private: int * it_; }; auto make_range() { static int si; return boost::make_iterator_range( basic_input_iter(&si), basic_input_iter(&si + 1)); } This fails to compile with the following errors:
g++ -Wall -Wstrict-aliasing=0 -Wno-unused-local-typedefs -Werror=return-type -static-libgcc -static-libasan -static-libstdc++ -static-libubsan -std=gnu++20 -O3 -flto -pthread -Iintermediate/linux64/obj/linux64__test__iter_test -Iintermediate/linux64/libs/boost/install/include -DELDWOOD_EXTENSION_BOOST -c -o intermediate/linux64/obj/linux64__test__iter_test/eldwood/test/iter.cpp.o intermediate/linux64/obj/linux64__test__iter_test/eldwood/test/iter.cpp In file included from intermediate/linux64/libs/boost/install/include/boost/iterator/iterator_facade.hpp:13, from intermediate/linux64/libs/boost/install/include/boost/range/iterator_range_core.hpp:27, from intermediate/linux64/libs/boost/install/include/boost/range/iterator_range.hpp:13, from intermediate/linux64/obj/linux64__test__iter_test/eldwood/test/iter.cpp:2: intermediate/linux64/libs/boost/install/include/boost/iterator/iterator_categories.hpp: In instantiation of ‘struct boost::iterators::iterator_traversal<basic_input_iter>’: intermediate/linux64/libs/boost/install/include/boost/range/iterator_range_core.hpp:158:5: required from ‘struct boost::iterator_range_detail::pure_iterator_traversal<basic_input_iter>’ intermediate/linux64/libs/boost/install/include/boost/range/iterator_range_core.hpp:434:15: required from ‘class boost::iterator_range<basic_input_iter>’ intermediate/linux64/obj/linux64__test__iter_test/eldwood/test/iter.cpp:40:36: required from here intermediate/linux64/libs/boost/install/include/boost/iterator/iterator_categories.hpp:118:8: error: no type named ‘iterator_category’ in ‘struct std::iterator_traits<basic_input_iter>’ 118 | struct iterator_traversal | ^~~~~~~~~~~~~~~~~~ intermediate/linux64/libs/boost/install/include/boost/range/iterator_range_core.hpp: In instantiation of ‘struct boost::iterator_range_detail::pure_iterator_traversal<basic_input_iter>’: intermediate/linux64/libs/boost/install/include/boost/range/iterator_range_core.hpp:434:15: required from ‘class boost::iterator_range<basic_input_iter>’ intermediate/linux64/obj/linux64__test__iter_test/eldwood/test/iter.cpp:40:36: required from here intermediate/linux64/libs/boost/install/include/boost/range/iterator_range_core.hpp:158:5: error: no type named ‘type’ in ‘struct boost::iterators::iterator_traversal<basic_input_iter>’ 158 | traversal_t; | ^~~~~~~~~~~ In file included from intermediate/linux64/libs/boost/install/include/boost/utility/enable_if.hpp:15, from intermediate/linux64/libs/boost/install/include/boost/range/has_range_iterator.hpp:21, from intermediate/linux64/libs/boost/install/include/boost/range/difference_type.hpp:21, from intermediate/linux64/libs/boost/install/include/boost/range/size_type.hpp:19, from intermediate/linux64/libs/boost/install/include/boost/range/size.hpp:21, from intermediate/linux64/libs/boost/install/include/boost/range/functions.hpp:20, from intermediate/linux64/libs/boost/install/include/boost/range/iterator_range_core.hpp:38: intermediate/linux64/libs/boost/install/include/boost/core/enable_if.hpp: In instantiation of ‘struct boost::enable_if<boost::iterator_range<basic_input_iter>::is_compatible_range<const basic_input_iter>, void>’: intermediate/linux64/libs/boost/install/include/boost/range/iterator_range_core.hpp:489:13: required by substitution of ‘template<class SinglePassRange> boost::iterator_range<basic_input_iter>::iterator_range(const SinglePassRange&, typename boost::enable_if<is_compatible_range<const SinglePassRange>, void>::type*) [with SinglePassRange = basic_input_iter]’ intermediate/linux64/libs/boost/install/include/boost/range/iterator_range_core.hpp:758:20: required from ‘boost::iterator_range<IteratorT> boost::make_iterator_range(IteratorT, IteratorT) [with IteratorT = basic_input_iter]’ intermediate/linux64/obj/linux64__test__iter_test/eldwood/test/iter.cpp:40:36: required from here intermediate/linux64/libs/boost/install/include/boost/core/enable_if.hpp:41:10: error: ‘value’ is not a member of ‘boost::iterator_range<basic_input_iter>::is_compatible_range<const basic_input_iter>’ 41 | struct enable_if : public enable_if_c<Cond::value, T> {}; | ^~~~~~~~~ intermediate/linux64/libs/boost/install/include/boost/core/enable_if.hpp: In instantiation of ‘struct boost::enable_if<boost::iterator_range<basic_input_iter>::is_compatible_range<basic_input_iter>, void>’: intermediate/linux64/libs/boost/install/include/boost/range/iterator_range_core.hpp:500:13: required by substitution of ‘template<class SinglePassRange> boost::iterator_range<basic_input_iter>::iterator_range(SinglePassRange&, typename boost::enable_if<is_compatible_range<Source>, void>::type*) [with SinglePassRange = basic_input_iter]’ intermediate/linux64/libs/boost/install/include/boost/range/iterator_range_core.hpp:758:20: required from ‘boost::iterator_range<IteratorT> boost::make_iterator_range(IteratorT, IteratorT) [with IteratorT = basic_input_iter]’ intermediate/linux64/obj/linux64__test__iter_test/eldwood/test/iter.cpp:40:36: required from here intermediate/linux64/libs/boost/install/include/boost/core/enable_if.hpp:41:10: error: ‘value’ is not a member of ‘boost::iterator_range<basic_input_iter>::is_compatible_range<basic_input_iter>’
Build failed. -- Rainer Deyke (rainerd@eldwood.com)