compare error using g++ 11.1.0

[wenwenchenbosch]

If I compile the kuksa.val, I got the following error message:

[ 40%] Building CXX object src/CMakeFiles/kuksa-val-server-object.dir/VssCommandProcessor.cpp.o
In file included from /home/wenwen/data/tools/kuksa.val2/build/_deps/boost-build/include/boost/concept/assert.hpp:35,
                 from /home/wenwen/data/tools/kuksa.val2/build/_deps/boost-build/include/boost/concept_check.hpp:20,
                 from /home/wenwen/data/tools/kuksa.val2/build/_deps/boost-build/include/boost/range/concepts.hpp:19,
                 from /home/wenwen/data/tools/kuksa.val2/build/_deps/boost-build/include/boost/range/size_type.hpp:20,
                 from /home/wenwen/data/tools/kuksa.val2/build/_deps/boost-build/include/boost/range/size.hpp:21,
                 from /home/wenwen/data/tools/kuksa.val2/build/_deps/boost-build/include/boost/range/functions.hpp:20,
                 from /home/wenwen/data/tools/kuksa.val2/build/_deps/boost-build/include/boost/range/iterator_range_core.hpp:38,
                 from /home/wenwen/data/tools/kuksa.val2/build/_deps/boost-build/include/boost/range/iterator_range.hpp:13,
                 from /home/wenwen/data/tools/kuksa.val2/build/_deps/boost-build/include/boost/range/as_literal.hpp:18,
                 from /home/wenwen/data/tools/kuksa.val2/build/_deps/boost-build/include/boost/algorithm/string/trim.hpp:19,
                 from /home/wenwen/data/tools/kuksa.val2/build/_deps/boost-build/include/boost/algorithm/string.hpp:19,
                 from /home/wenwen/data/tools/kuksa.val2/src/VSSPath.cpp:22:
/home/wenwen/data/tools/kuksa.val2/build/_deps/boost-build/include/boost/concept/detail/general.hpp: In instantiation of ‘static void boost::concepts::constraint<Model>::failed() [with Model = boost::algorithm::FinderConcept<boost::algorithm::detail::token_finderF<boost::algorithm::detail::is_any_ofF<char> >, __gnu_cxx::__normal_iterator<char*, std::__cxx11::basic_string<char> > >]’:
/home/wenwen/data/tools/kuksa.val2/build/_deps/boost-build/include/boost/algorithm/string/iter_find.hpp:81:13:   required from ‘SequenceSequenceT& boost::algorithm::iter_split(SequenceSequenceT&, RangeT&&, FinderT) [with SequenceSequenceT = std::vector<std::__cxx11::basic_string<char> >; RangeT = std::__cxx11::basic_string<char>&; FinderT = boost::algorithm::detail::token_finderF<boost::algorithm::detail::is_any_ofF<char> >]’
/home/wenwen/data/tools/kuksa.val2/build/_deps/boost-build/include/boost/algorithm/string/split.hpp:158:50:   required from ‘SequenceSequenceT& boost::algorithm::split(SequenceSequenceT&, RangeT&&, PredicateT, boost::algorithm::token_compress_mode_type) [with SequenceSequenceT = std::vector<std::__cxx11::basic_string<char> >; RangeT = std::__cxx11::basic_string<char>&; PredicateT = boost::algorithm::detail::is_any_ofF<char>]’
/home/wenwen/data/tools/kuksa.val2/src/VSSPath.cpp:67:15:   required from here
/home/wenwen/data/tools/kuksa.val2/build/_deps/boost-build/include/boost/concept/detail/general.hpp:47:52: error: ‘this’ pointer is null [-Werror=nonnull]
   47 |     static void failed() { ((Model*)0)->constraints(); }
      |                            ~~~~~~~~~~~~~~~~~~~~~~~~^~
compilation terminated due to -Wfatal-errors.
cc1plus: all warnings being treated as errors
make[2]: *** [src/CMakeFiles/kuksa-val-server-object.dir/build.make:188: src/CMakeFiles/kuksa-val-server-object.dir/VSSPath.cpp.o] Error 1
make[2]: *** Waiting for unfinished jobs....
In file included from /home/wenwen/data/tools/kuksa.val2/build/_deps/boost-build/include/boost/concept/assert.hpp:35,
                 from /home/wenwen/data/tools/kuksa.val2/build/_deps/boost-build/include/boost/concept_check.hpp:20,
                 from /home/wenwen/data/tools/kuksa.val2/build/_deps/boost-build/include/boost/range/concepts.hpp:19,
                 from /home/wenwen/data/tools/kuksa.val2/build/_deps/boost-build/include/boost/range/size_type.hpp:20,
                 from /home/wenwen/data/tools/kuksa.val2/build/_deps/boost-build/include/boost/range/size.hpp:21,
                 from /home/wenwen/data/tools/kuksa.val2/build/_deps/boost-build/include/boost/range/functions.hpp:20,
                 from /home/wenwen/data/tools/kuksa.val2/build/_deps/boost-build/include/boost/range/iterator_range_core.hpp:38,
                 from /home/wenwen/data/tools/kuksa.val2/build/_deps/boost-build/include/boost/range/iterator_range.hpp:13,
                 from /home/wenwen/data/tools/kuksa.val2/build/_deps/boost-build/include/boost/range/as_literal.hpp:18,
                 from /home/wenwen/data/tools/kuksa.val2/build/_deps/boost-build/include/boost/algorithm/string/trim.hpp:19,
                 from /home/wenwen/data/tools/kuksa.val2/build/_deps/boost-build/include/boost/algorithm/string.hpp:19,
                 from /home/wenwen/data/tools/kuksa.val2/src/VSSTypeSanitizer.cpp:20:
/home/wenwen/data/tools/kuksa.val2/build/_deps/boost-build/include/boost/concept/detail/general.hpp: In instantiation of ‘static void boost::concepts::constraint<Model>::failed() [with Model = boost::algorithm::FinderConcept<boost::algorithm::detail::first_finderF<const char*, boost::algorithm::is_equal>, __gnu_cxx::__normal_iterator<const char*, std::__cxx11::basic_string<char> > >]’:
/home/wenwen/data/tools/kuksa.val2/build/_deps/boost-build/include/boost/algorithm/string/find_format.hpp:98:13:   required from ‘void boost::algorithm::find_format_all(SequenceT&, FinderT, FormatterT) [with SequenceT = std::__cxx11::basic_string<char>; FinderT = boost::algorithm::detail::first_finderF<const char*, boost::algorithm::is_equal>; FormatterT = boost::algorithm::detail::empty_formatF<char>]’
/home/wenwen/data/tools/kuksa.val2/build/_deps/boost-build/include/boost/algorithm/string/erase.hpp:593:48:   required from ‘void boost::algorithm::erase_all(SequenceT&, const RangeT&) [with SequenceT = std::__cxx11::basic_string<char>; RangeT = char [2]]’
/home/wenwen/data/tools/kuksa.val2/src/VSSTypeSanitizer.cpp:72:32:   required from here
/home/wenwen/data/tools/kuksa.val2/build/_deps/boost-build/include/boost/concept/detail/general.hpp:47:52: error: ‘this’ pointer is null [-Werror=nonnull]
   47 |     static void failed() { ((Model*)0)->constraints(); }
      |                            ~~~~~~~~~~~~~~~~~~~~~~~~^~
compilation terminated due to -Wfatal-errors.

 g++ --version
g++ (GCC) 11.1.0
Copyright (C) 2021 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.