Test output: teeks99-dkr-dg7 - spirit - x3_expect_nothrow / gcc-7~c++14
Rev d14c9e4596b8f3896f17f5403755f1ec7019b19a / Thu, 14 Nov 2024 23:15:12 +0000
Compile [2024-11-15 02:04:29 UTC]: fail


    "g++-7"  -ftemplate-depth-512 -fvisibility-inlines-hidden -std=c++14 -fPIC -m64 -pthread -O0 -fno-inline -Wall -fvisibility=hidden -Wno-maybe-uninitialized -DBOOST_ALL_NO_LIB=1 -DBOOST_CHRONO_DYN_LINK=1 -DBOOST_CHRONO_NO_LIB=1 -DBOOST_COBALT_USE_STD_PMR=1 -DBOOST_HAS_ICU=1 -DBOOST_REGEX_NO_LIB=1 -DBOOST_SYSTEM_DYN_LINK=1 -DBOOST_SYSTEM_NO_LIB=1 -DBOOST_THREAD_BUILD_DLL=1 -DBOOST_THREAD_POSIX -DBOOST_THREAD_USE_DLL=1   -I".." -I"../libs/spirit/test/x3" -I"/var/boost/run/boost_root/libs/assert/include" -I"/var/boost/run/boost_root/libs/bind/include" -I"/var/boost/run/boost_root/libs/chrono/include" -I"/var/boost/run/boost_root/libs/container_hash/include" -I"/var/boost/run/boost_root/libs/core/include" -I"/var/boost/run/boost_root/libs/describe/include" -I"/var/boost/run/boost_root/libs/detail/include" -I"/var/boost/run/boost_root/libs/endian/include" -I"/var/boost/run/boost_root/libs/function/include" -I"/var/boost/run/boost_root/libs/function_types/include" -I"/var/boost/run/boost_root/libs/fusion/include" -I"/var/boost/run/boost_root/libs/integer/include" -I"/var/boost/run/boost_root/libs/iterator/include" -I"/var/boost/run/boost_root/libs/move/include" -I"/var/boost/run/boost_root/libs/mp11/include" -I"/var/boost/run/boost_root/libs/optional/include" -I"/var/boost/run/boost_root/libs/phoenix/include" -I"/var/boost/run/boost_root/libs/predef/include" -I"/var/boost/run/boost_root/libs/ratio/include" -I"/var/boost/run/boost_root/libs/regex/include" -I"/var/boost/run/boost_root/libs/smart_ptr/include" -I"/var/boost/run/boost_root/libs/spirit/include" -I"/var/boost/run/boost_root/libs/system/include" -I"/var/boost/run/boost_root/libs/throw_exception/include" -I"/var/boost/run/boost_root/libs/tuple/include" -I"/var/boost/run/boost_root/libs/type_index/include" -I"/var/boost/run/boost_root/libs/type_traits/include" -I"/var/boost/run/boost_root/libs/unordered/include" -I"/var/boost/run/boost_root/libs/variant/include" -I"/var/boost/run/boost_root/libs/variant2/include" -I"/var/boost/run/boost_root/libs/winapi/include"  -c -o "/var/boost/run/results/boost/bin.v2/libs/spirit/test/x3/x3_expect_nothrow.test/gcc-7~c++14/debug/x86_64/debug-symbols-off/threading-multi/visibility-hidden/expect_nothrow.o" "../libs/spirit/test/x3/expect_nothrow.cpp"

In file included from ../libs/spirit/test/x3/expect.ipp:9:0,
                 from ../libs/spirit/test/x3/expect_nothrow.cpp:8:
../boost/spirit/home/x3.hpp:26:4: warning: #warning "Spirit X3 will soon use C++17 features which your compiler does not support" [-Wcpp]
 #  warning "Spirit X3 will soon use C++17 features which your compiler does not support"
    ^~~~~~~
../boost/spirit/home/x3.hpp:28:5: warning: #warning "Use -std=c++17 or -std=gnu++17 compiler flag to enable C++17 mode" [-Wcpp]
 #   warning "Use -std=c++17 or -std=gnu++17 compiler flag to enable C++17 mode"
     ^~~~~~~
../boost/spirit/home/x3.hpp:30:4: warning: #warning "Minimal supported compiler versions: Clang 4 / GCC 7 / MSC 1915 (VS 2017 v15.8)" [-Wcpp]
 #  warning "Minimal supported compiler versions: Clang 4 / GCC 7 / MSC 1915 (VS 2017 v15.8)"
    ^~~~~~~
In file included from ../libs/spirit/test/x3/expect.ipp:9:0,
                 from ../libs/spirit/test/x3/expect_nothrow.cpp:8:
../boost/spirit/home/x3.hpp:36:4: warning: #warning "Define BOOST_SPIRIT_X3_HIDE_CXX17_WARNING to hide the warning" [-Wcpp]
 #  warning "Define BOOST_SPIRIT_X3_HIDE_CXX17_WARNING to hide the warning"
    ^~~~~~~
In file included from ../libs/spirit/test/x3/expect.ipp:9:0,
                 from ../libs/spirit/test/x3/expect_nothrow.cpp:8:
../boost/spirit/home/x3.hpp:34:145: note: #pragma message: This compiler seems to be GCC 7 (__cplusplus=201402L)
 #   pragma message "This compiler seems to be GCC " BOOST_SPIRIT_X3_STRINGIZE(__GNUC__) " (__cplusplus=" BOOST_SPIRIT_X3_STRINGIZE(__cplusplus) ")"
                                                                                                                                                 ^~~
In file included from ../boost/spirit/home/x3/core/skip_over.hpp:12:0,
                 from ../boost/spirit/home/x3/auxiliary/eps.hpp:10,
                 from ../boost/spirit/home/x3/auxiliary.hpp:12,
                 from ../boost/spirit/home/x3.hpp:62,
                 from ../libs/spirit/test/x3/expect.ipp:9,
                 from ../libs/spirit/test/x3/expect_nothrow.cpp:8:
../boost/spirit/home/x3/support/expectation.hpp:120:49: warning: 'nodiscard' attribute can only be applied to functions or to class or enumeration types [-Wattributes]
             constexpr decltype(auto) where(std::optional<expectation_failure<Iterator>> const& failure) noexcept { return failure->where(); }
                                                 ^~~~~~~~
../boost/spirit/home/x3/support/expectation.hpp:120:49: error: 'template<class Iterator> constexpr const decltype(auto) boost::spirit::x3::non_throwing::expectation_failure_helpers::where' conflicts with a previous declaration
../boost/spirit/home/x3/support/expectation.hpp:111:38: note: previous declaration 'constexpr decltype(auto) boost::spirit::x3::non_throwing::expectation_failure_helpers::where(const boost::spirit::x3::non_throwing::expectation_failure<Iterator>&)'
             constexpr decltype(auto) where(expectation_failure<Iterator> const& failure) noexcept { return failure.where(); }
                                      ^~~~~
../boost/spirit/home/x3/support/expectation.hpp:120:49: error: 'optional' is not a member of 'std'
             constexpr decltype(auto) where(std::optional<expectation_failure<Iterator>> const& failure) noexcept { return failure->where(); }
                                                 ^~~~~~~~
../boost/spirit/home/x3/support/expectation.hpp:120:49: note: suggested alternative: 'internal'
             constexpr decltype(auto) where(std::optional<expectation_failure<Iterator>> const& failure) noexcept { return failure->where(); }
                                                 ^~~~~~~~
                                                 internal
../boost/spirit/home/x3/support/expectation.hpp:120:86: error: expected primary-expression before '>' token
             constexpr decltype(auto) where(std::optional<expectation_failure<Iterator>> const& failure) noexcept { return failure->where(); }
                                                                                      ^~
../boost/spirit/home/x3/support/expectation.hpp:120:89: error: expected primary-expression before 'const'
             constexpr decltype(auto) where(std::optional<expectation_failure<Iterator>> const& failure) noexcept { return failure->where(); }
                                                                                         ^~~~~
../boost/spirit/home/x3/support/expectation.hpp:120:105: error: expected ';' before 'noexcept'
             constexpr decltype(auto) where(std::optional<expectation_failure<Iterator>> const& failure) noexcept { return failure->where(); }
                                                                                                         ^~~~~~~~
In file included from ../boost/spirit/home/x3/core/skip_over.hpp:12:0,
                 from ../boost/spirit/home/x3/auxiliary/eps.hpp:10,
                 from ../boost/spirit/home/x3/auxiliary.hpp:12,
                 from ../boost/spirit/home/x3.hpp:62,
                 from ../libs/spirit/test/x3/expect.ipp:9,
                 from ../libs/spirit/test/x3/expect_nothrow.cpp:8:
../boost/spirit/home/x3/support/expectation.hpp:124:49: warning: 'nodiscard' attribute can only be applied to functions or to class or enumeration types [-Wattributes]
             constexpr decltype(auto) which(std::optional<expectation_failure<Iterator>> const& failure) noexcept { return failure->which(); }
                                                 ^~~~~~~~
../boost/spirit/home/x3/support/expectation.hpp:124:49: error: 'template<class Iterator> constexpr const decltype(auto) boost::spirit::x3::non_throwing::expectation_failure_helpers::which' conflicts with a previous declaration
In file included from ../boost/spirit/home/x3/core/skip_over.hpp:12:0,
                 from ../boost/spirit/home/x3/auxiliary/eps.hpp:10,
                 from ../boost/spirit/home/x3/auxiliary.hpp:12,
                 from ../boost/spirit/home/x3.hpp:62,
                 from ../libs/spirit/test/x3/expect.ipp:9,
                 from ../libs/spirit/test/x3/expect_nothrow.cpp:8:
../boost/spirit/home/x3/support/expectation.hpp:115:38: note: previous declaration 'constexpr decltype(auto) boost::spirit::x3::non_throwing::expectation_failure_helpers::which(const boost::spirit::x3::non_throwing::expectation_failure<Iterator>&)'
             constexpr decltype(auto) which(expectation_failure<Iterator> const& failure) noexcept { return failure.which(); }
                                      ^~~~~
In file included from ../boost/spirit/home/x3/core/skip_over.hpp:12:0,
                 from ../boost/spirit/home/x3/auxiliary/eps.hpp:10,
                 from ../boost/spirit/home/x3/auxiliary.hpp:12,
                 from ../boost/spirit/home/x3.hpp:62,
                 from ../libs/spirit/test/x3/expect.ipp:9,
                 from ../libs/spirit/test/x3/expect_nothrow.cpp:8:
../boost/spirit/home/x3/support/expectation.hpp:124:49: error: 'optional' is not a member of 'std'
             constexpr decltype(auto) which(std::optional<expectation_failure<Iterator>> const& failure) noexcept { return failure->which(); }
                                                 ^~~~~~~~
../boost/spirit/home/x3/support/expectation.hpp:124:49: note: suggested alternative: 'internal'
             constexpr decltype(auto) which(std::optional<expectation_failure<Iterator>> const& failure) noexcept { return failure->which(); }
                                                 ^~~~~~~~
                                                 internal
../boost/spirit/home/x3/support/expectation.hpp:124:86: error: expected primary-expression before '>' token
             constexpr decltype(auto) which(std::optional<expectation_failure<Iterator>> const& failure) noexcept { return failure->which(); }
                                                                                      ^~
../boost/spirit/home/x3/support/expectation.hpp:124:89: error: expected primary-expression before 'const'
             constexpr decltype(auto) which(std::optional<expectation_failure<Iterator>> const& failure) noexcept { return failure->which(); }
                                                                                         ^~~~~
../boost/spirit/home/x3/support/expectation.hpp:124:105: error: expected ';' before 'noexcept'
             constexpr decltype(auto) which(std::optional<expectation_failure<Iterator>> const& failure) noexcept { return failure->which(); }
                                                                                                         ^~~~~~~~
../boost/spirit/home/x3/support/expectation.hpp:138:72: error: 'optional' is not a member of 'std'
             constexpr decltype(auto) where(std::reference_wrapper<std::optional<expectation_failure<Iterator>>> const& failure) noexcept { return failure.get()->where(); }
                                                                        ^~~~~~~~
../boost/spirit/home/x3/support/expectation.hpp:138:72: note: suggested alternative: 'internal'
             constexpr decltype(auto) where(std::reference_wrapper<std::optional<expectation_failure<Iterator>>> const& failure) noexcept { return failure.get()->where(); }
                                                                        ^~~~~~~~
                                                                        internal
../boost/spirit/home/x3/support/expectation.hpp:138:72: error: 'optional' is not a member of 'std'
../boost/spirit/home/x3/support/expectation.hpp:138:72: note: suggested alternative: 'internal'
             constexpr decltype(auto) where(std::reference_wrapper<std::optional<expectation_failure<Iterator>>> const& failure) noexcept { return failure.get()->where(); }
                                                                        ^~~~~~~~
                                                                        internal
../boost/spirit/home/x3/support/expectation.hpp:138:109: error: template argument 1 is invalid
             constexpr decltype(auto) where(std::reference_wrapper<std::optional<expectation_failure<Iterator>>> const& failure) noexcept { return failure.get()->where(); }
                                                                                                             ^~
../boost/spirit/home/x3/support/expectation.hpp:138:72: error: 'optional' is not a member of 'std'
             constexpr decltype(auto) where(std::reference_wrapper<std::optional<expectation_failure<Iterator>>> const& failure) noexcept { return failure.get()->where(); }
                                                                        ^~~~~~~~
../boost/spirit/home/x3/support/expectation.hpp:138:72: note: suggested alternative: 'internal'
             constexpr decltype(auto) where(std::reference_wrapper<std::optional<expectation_failure<Iterator>>> const& failure) noexcept { return failure.get()->where(); }
                                                                        ^~~~~~~~
                                                                        internal
../boost/spirit/home/x3/support/expectation.hpp:138:72: error: 'optional' is not a member of 'std'
../boost/spirit/home/x3/support/expectation.hpp:138:72: note: suggested alternative: 'internal'
             constexpr decltype(auto) where(std::reference_wrapper<std::optional<expectation_failure<Iterator>>> const& failure) noexcept { return failure.get()->where(); }
                                                                        ^~~~~~~~
                                                                        internal
../boost/spirit/home/x3/support/expectation.hpp:138:109: error: template argument 1 is invalid
             constexpr decltype(auto) where(std::reference_wrapper<std::optional<expectation_failure<Iterator>>> const& failure) noexcept { return failure.get()->where(); }
                                                                                                             ^~
../boost/spirit/home/x3/support/expectation.hpp:138:72: error: 'optional' is not a member of 'std'
             constexpr decltype(auto) where(std::reference_wrapper<std::optional<expectation_failure<Iterator>>> const& failure) noexcept { return failure.get()->where(); }
                                                                        ^~~~~~~~
../boost/spirit/home/x3/support/expectation.hpp:138:72: note: suggested alternative: 'internal'
             constexpr decltype(auto) where(std::reference_wrapper<std::optional<expectation_failure<Iterator>>> const& failure) noexcept { return failure.get()->where(); }
                                                                        ^~~~~~~~
                                                                        internal
../boost/spirit/home/x3/support/expectation.hpp:138:72: error: 'optional' is not a member of 'std'
../boost/spirit/home/x3/support/expectation.hpp:138:72: note: suggested alternative: 'internal'
             constexpr decltype(auto) where(std::reference_wrapper<std::optional<expectation_failure<Iterator>>> const& failure) noexcept { return failure.get()->where(); }
                                                                        ^~~~~~~~
                                                                        internal
../boost/spirit/home/x3/support/expectation.hpp:138:109: error: template argument 1 is invalid
             constexpr decltype(auto) where(std::reference_wrapper<std::optional<expectation_failure<Iterator>>> const& failure) noexcept { return failure.get()->where(); }
                                                                                                             ^~
../boost/spirit/home/x3/support/expectation.hpp:138:49: warning: 'nodiscard' attribute can only be applied to functions or to class or enumeration types [-Wattributes]
             constexpr decltype(auto) where(std::reference_wrapper<std::optional<expectation_failure<Iterator>>> const& failure) noexcept { return failure.get()->where(); }
                                                 ^~~~~~~~~~~~~~~~~
../boost/spirit/home/x3/support/expectation.hpp:138:49: error: 'template<class Iterator> constexpr const decltype(auto) boost::spirit::x3::non_throwing::expectation_failure_helpers::where' conflicts with a previous declaration
../boost/spirit/home/x3/support/expectation.hpp:129:38: note: previous declaration 'namespace boost::spirit::x3::non_throwing::expectation_failure_helpers { }::where'
             constexpr decltype(auto) where(boost::optional<expectation_failure<Iterator>> const& failure) noexcept { return failure->where(); }
                                      ^~~~~
../boost/spirit/home/x3/support/expectation.hpp:138:72: error: 'optional' is not a member of 'std'
             constexpr decltype(auto) where(std::reference_wrapper<std::optional<expectation_failure<Iterator>>> const& failure) noexcept { return failure.get()->where(); }
                                                                        ^~~~~~~~
../boost/spirit/home/x3/support/expectation.hpp:138:72: note: suggested alternative: 'internal'
             constexpr decltype(auto) where(std::reference_wrapper<std::optional<expectation_failure<Iterator>>> const& failure) noexcept { return failure.get()->where(); }
                                                                        ^~~~~~~~
                                                                        internal
../boost/spirit/home/x3/support/expectation.hpp:138:72: error: 'optional' is not a member of 'std'
../boost/spirit/home/x3/support/expectation.hpp:138:72: note: suggested alternative: 'internal'
             constexpr decltype(auto) where(std::reference_wrapper<std::optional<expectation_failure<Iterator>>> const& failure) noexcept { return failure.get()->where(); }
                                                                        ^~~~~~~~
                                                                        internal
../boost/spirit/home/x3/support/expectation.hpp:138:109: error: template argument 1 is invalid
             constexpr decltype(auto) where(std::reference_wrapper<std::optional<expectation_failure<Iterator>>> const& failure) noexcept { return failure.get()->where(); }
                                                                                                             ^~
../boost/spirit/home/x3/support/expectation.hpp:138:113: error: expected primary-expression before 'const'
             constexpr decltype(auto) where(std::reference_wrapper<std::optional<expectation_failure<Iterator>>> const& failure) noexcept { return failure.get()->where(); }
                                                                                                                 ^~~~~
../boost/spirit/home/x3/support/expectation.hpp:138:129: error: expected ';' before 'noexcept'
             constexpr decltype(auto) where(std::reference_wrapper<std::optional<expectation_failure<Iterator>>> const& failure) noexcept { return failure.get()->where(); }
                                                                                                                                 ^~~~~~~~
../boost/spirit/home/x3/support/expectation.hpp:142:72: error: 'optional' is not a member of 'std'
             constexpr decltype(auto) which(std::reference_wrapper<std::optional<expectation_failure<Iterator>>> const& failure) noexcept { return failure.get()->which(); }
                                                                        ^~~~~~~~
../boost/spirit/home/x3/support/expectation.hpp:142:72: note: suggested alternative: 'internal'
             constexpr decltype(auto) which(std::reference_wrapper<std::optional<expectation_failure<Iterator>>> const& failure) noexcept { return failure.get()->which(); }
                                                                        ^~~~~~~~
                                                                        internal
../boost/spirit/home/x3/support/expectation.hpp:142:72: error: 'optional' is not a member of 'std'
../boost/spirit/home/x3/support/expectation.hpp:142:72: note: suggested alternative: 'internal'
             constexpr decltype(auto) which(std::reference_wrapper<std::optional<expectation_failure<Iterator>>> const& failure) noexcept { return failure.get()->which(); }
                                                                        ^~~~~~~~
                                                                        internal
../boost/spirit/home/x3/support/expectation.hpp:142:109: error: template argument 1 is invalid
             constexpr decltype(auto) which(std::reference_wrapper<std::optional<expectation_failure<Iterator>>> const& failure) noexcept { return failure.get()->which(); }
                                                                                                             ^~
../boost/spirit/home/x3/support/expectation.hpp:142:72: error: 'optional' is not a member of 'std'
             constexpr decltype(auto) which(std::reference_wrapper<std::optional<expectation_failure<Iterator>>> const& failure) noexcept { return failure.get()->which(); }
                                                                        ^~~~~~~~
../boost/spirit/home/x3/support/expectation.hpp:142:72: note: suggested alternative: 'internal'
             constexpr decltype(auto) which(std::reference_wrapper<std::optional<expectation_failure<Iterator>>> const& failure) noexcept { return failure.get()->which(); }
                                                                        ^~~~~~~~
                                                                        internal
../boost/spirit/home/x3/support/expectation.hpp:142:72: error: 'optional' is not a member of 'std'
../boost/spirit/home/x3/support/expectation.hpp:142:72: note: suggested alternative: 'internal'
             constexpr decltype(auto) which(std::reference_wrapper<std::optional<expectation_failure<Iterator>>> const& failure) noexcept { return failure.get()->which(); }
                                                                        ^~~~~~~~
                                                                        internal
../boost/spirit/home/x3/support/expectation.hpp:142:109: error: template argument 1 is invalid
             constexpr decltype(auto) which(std::reference_wrapper<std::optional<expectation_failure<Iterator>>> const& failure) noexcept { return failure.get()->which(); }
                                                                                                             ^~
../boost/spirit/home/x3/support/expectation.hpp:142:72: error: 'optional' is not a member of 'std'
             constexpr decltype(auto) which(std::reference_wrapper<std::optional<expectation_failure<Iterator>>> const& failure) noexcept { return failure.get()->which(); }
                                                                        ^~~~~~~~
../boost/spirit/home/x3/support/expectation.hpp:142:72: note: suggested alternative: 'internal'
             constexpr decltype(auto) which(std::reference_wrapper<std::optional<expectation_failure<Iterator>>> const& failure) noexcept { return failure.get()->which(); }
                                                                        ^~~~~~~~
                                                                        internal
../boost/spirit/home/x3/support/expectation.hpp:142:72: error: 'optional' is not a member of 'std'
../boost/spirit/home/x3/support/expectation.hpp:142:72: note: suggested alternative: 'internal'
             constexpr decltype(auto) which(std::reference_wrapper<std::optional<expectation_failure<Iterator>>> const& failure) noexcept { return failure.get()->which(); }
                                                                        ^~~~~~~~
                                                                        internal
../boost/spirit/home/x3/support/expectation.hpp:142:109: error: template argument 1 is invalid
             constexpr decltype(auto) which(std::reference_wrapper<std::optional<expectation_failure<Iterator>>> const& failure) noexcept { return failure.get()->which(); }
                                                                                                             ^~
../boost/spirit/home/x3/support/expectation.hpp:142:49: warning: 'nodiscard' attribute can only be applied to functions or to class or enumeration types [-Wattributes]
             constexpr decltype(auto) which(std::reference_wrapper<std::optional<expectation_failure<Iterator>>> const& failure) noexcept { return failure.get()->which(); }
                                                 ^~~~~~~~~~~~~~~~~
../boost/spirit/home/x3/support/expectation.hpp:142:49: error: 'template<class Iterator> constexpr const decltype(auto) boost::spirit::x3::non_throwing::expectation_failure_helpers::which' conflicts with a previous declaration
../boost/spirit/home/x3/support/expectation.hpp:133:38: note: previous declaration 'namespace boost::spirit::x3::non_throwing::expectation_failure_helpers { }::which'
             constexpr decltype(auto) which(boost::optional<expectation_failure<Iterator>> const& failure) noexcept { return failure->which(); }
                                      ^~~~~
../boost/spirit/home/x3/support/expectation.hpp:142:72: error: 'optional' is not a member of 'std'
             constexpr decltype(auto) which(std::reference_wrapper<std::optional<expectation_failure<Iterator>>> const& failure) noexcept { return failure.get()->which(); }
                                                                        ^~~~~~~~
../boost/spirit/home/x3/support/expectation.hpp:142:72: note: suggested alternative: 'internal'
             constexpr decltype(auto) which(std::reference_wrapper<std::optional<expectation_failure<Iterator>>> const& failure) noexcept { return failure.get()->which(); }
                                                                        ^~~~~~~~
                                                                        internal
../boost/spirit/home/x3/support/expectation.hpp:142:72: error: 'optional' is not a member of 'std'
../boost/spirit/home/x3/support/expectation.hpp:142:72: note: suggested alternative: 'internal'
             constexpr decltype(auto) which(std::reference_wrapper<std::optional<expectation_failure<Iterator>>> const& failure) noexcept { return failure.get()->which(); }
                                                                        ^~~~~~~~
                                                                        internal
../boost/spirit/home/x3/support/expectation.hpp:142:109: error: template argument 1 is invalid
             constexpr decltype(auto) which(std::reference_wrapper<std::optional<expectation_failure<Iterator>>> const& failure) noexcept { return failure.get()->which(); }
                                                                                                             ^~
../boost/spirit/home/x3/support/expectation.hpp:142:113: error: expected primary-expression before 'const'
             constexpr decltype(auto) which(std::reference_wrapper<std::optional<expectation_failure<Iterator>>> const& failure) noexcept { return failure.get()->which(); }
                                                                                                                 ^~~~~
../boost/spirit/home/x3/support/expectation.hpp:142:129: error: expected ';' before 'noexcept'
             constexpr decltype(auto) which(std::reference_wrapper<std::optional<expectation_failure<Iterator>>> const& failure) noexcept { return failure.get()->which(); }
                                                                                                                                 ^~~~~~~~
../boost/spirit/home/x3/support/expectation.hpp:170:62: error: 'template<class Iterator> constexpr const bool boost::spirit::x3::detail::non_throwing::has_expectation_failure_impl' redeclared as different kind of symbol
             constexpr bool has_expectation_failure_impl(std::optional<expectation_failure<Iterator>> const& failure) noexcept
                                                              ^~~~~~~~
../boost/spirit/home/x3/support/expectation.hpp:165:35: note: previous declaration 'constexpr bool boost::spirit::x3::detail::non_throwing::has_expectation_failure_impl(bool&)'
             inline constexpr bool has_expectation_failure_impl(bool& failure) noexcept {
                                   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
../boost/spirit/home/x3/support/expectation.hpp:170:62: error: 'optional' is not a member of 'std'
             constexpr bool has_expectation_failure_impl(std::optional<expectation_failure<Iterator>> const& failure) noexcept
                                                              ^~~~~~~~
../boost/spirit/home/x3/support/expectation.hpp:170:62: note: suggested alternative: 'internal'
             constexpr bool has_expectation_failure_impl(std::optional<expectation_failure<Iterator>> const& failure) noexcept
                                                              ^~~~~~~~
                                                              internal
../boost/spirit/home/x3/support/expectation.hpp:170:99: error: expected primary-expression before '>' token
             constexpr bool has_expectation_failure_impl(std::optional<expectation_failure<Iterator>> const& failure) noexcept
                                                                                                   ^~
../boost/spirit/home/x3/support/expectation.hpp:170:102: error: expected primary-expression before 'const'
             constexpr bool has_expectation_failure_impl(std::optional<expectation_failure<Iterator>> const& failure) noexcept
                                                                                                      ^~~~~
../boost/spirit/home/x3/support/expectation.hpp:195:62: error: variable or field 'set_expectation_failure_impl' declared void
             constexpr void set_expectation_failure_impl(std::optional<expectation_failure<Iterator>>& failure, T&& value)
                                                              ^~~~~~~~
../boost/spirit/home/x3/support/expectation.hpp:195:62: error: 'optional' is not a member of 'std'
../boost/spirit/home/x3/support/expectation.hpp:195:62: note: suggested alternative: 'internal'
             constexpr void set_expectation_failure_impl(std::optional<expectation_failure<Iterator>>& failure, T&& value)
                                                              ^~~~~~~~
                                                              internal
../boost/spirit/home/x3/support/expectation.hpp:195:99: error: expected primary-expression before '>' token
             constexpr void set_expectation_failure_impl(std::optional<expectation_failure<Iterator>>& failure, T&& value)
                                                                                                   ^~
../boost/spirit/home/x3/support/expectation.hpp:195:103: error: 'failure' was not declared in this scope
             constexpr void set_expectation_failure_impl(std::optional<expectation_failure<Iterator>>& failure, T&& value)
                                                                                                       ^~~~~~~
../boost/spirit/home/x3/support/expectation.hpp:195:113: error: expected primary-expression before '&&' token
             constexpr void set_expectation_failure_impl(std::optional<expectation_failure<Iterator>>& failure, T&& value)
                                                                                                                 ^~
../boost/spirit/home/x3/support/expectation.hpp:195:116: error: 'value' was not declared in this scope
             constexpr void set_expectation_failure_impl(std::optional<expectation_failure<Iterator>>& failure, T&& value)
                                                                                                                    ^~~~~
../boost/spirit/home/x3/support/expectation.hpp:195:116: note: suggested alternative: 'valloc'
             constexpr void set_expectation_failure_impl(std::optional<expectation_failure<Iterator>>& failure, T&& value)
                                                                                                                    ^~~~~
                                                                                                                    valloc
../boost/spirit/home/x3/support/expectation.hpp:223:64: error: variable or field 'clear_expectation_failure_impl' declared void
             constexpr void clear_expectation_failure_impl(std::optional<expectation_failure<Iterator>>& failure) noexcept
                                                                ^~~~~~~~
../boost/spirit/home/x3/support/expectation.hpp:223:64: error: 'optional' is not a member of 'std'
../boost/spirit/home/x3/support/expectation.hpp:223:64: note: suggested alternative: 'internal'
             constexpr void clear_expectation_failure_impl(std::optional<expectation_failure<Iterator>>& failure) noexcept
                                                                ^~~~~~~~
                                                                internal
../boost/spirit/home/x3/support/expectation.hpp:223:101: error: expected primary-expression before '>' token
             constexpr void clear_expectation_failure_impl(std::optional<expectation_failure<Iterator>>& failure) noexcept
                                                                                                     ^~
../boost/spirit/home/x3/support/expectation.hpp:223:105: error: 'failure' was not declared in this scope
             constexpr void clear_expectation_failure_impl(std::optional<expectation_failure<Iterator>>& failure) noexcept
                                                                                                         ^~~~~~~
../boost/spirit/home/x3/support/expectation.hpp: In function 'constexpr bool boost::spirit::x3::non_throwing::has_expectation_failure(const Context&)':
../boost/spirit/home/x3/support/expectation.hpp:254:23: error: 'is_same_v' is not a member of 'std'
                 !std::is_same_v<unused_type, T>,
                       ^~~~~~~~~
../boost/spirit/home/x3/support/expectation.hpp:254:23: note: suggested alternative: 'is_same'
                 !std::is_same_v<unused_type, T>,
                       ^~~~~~~~~
                       is_same
../boost/spirit/home/x3/support/expectation.hpp:254:44: error: expected primary-expression before ',' token
                 !std::is_same_v<unused_type, T>,
                                            ^
../boost/spirit/home/x3/support/expectation.hpp:254:32: warning: logical not is only applied to the left hand side of comparison [-Wlogical-not-parentheses]
                 !std::is_same_v<unused_type, T>,
                                ^
../boost/spirit/home/x3/support/expectation.hpp:254:46: error: expected string-literal before 'T'
                 !std::is_same_v<unused_type, T>,
                                              ^
../boost/spirit/home/x3/support/expectation.hpp:254:46: error: expected ')' before 'T'
../boost/spirit/home/x3/support/expectation.hpp: In function 'constexpr void boost::spirit::x3::non_throwing::set_expectation_failure(const Iterator&, const Subject&, const Context&)':
../boost/spirit/home/x3/support/expectation.hpp:280:23: error: 'is_same_v' is not a member of 'std'
                 !std::is_same_v<unused_type, T>,
                       ^~~~~~~~~
../boost/spirit/home/x3/support/expectation.hpp:280:23: note: suggested alternative: 'is_same'
                 !std::is_same_v<unused_type, T>,
                       ^~~~~~~~~
                       is_same
../boost/spirit/home/x3/support/expectation.hpp:280:44: error: expected primary-expression before ',' token
                 !std::is_same_v<unused_type, T>,
                                            ^
../boost/spirit/home/x3/support/expectation.hpp:280:32: warning: logical not is only applied to the left hand side of comparison [-Wlogical-not-parentheses]
                 !std::is_same_v<unused_type, T>,
                                ^
../boost/spirit/home/x3/support/expectation.hpp:280:46: error: expected string-literal before 'T'
                 !std::is_same_v<unused_type, T>,
                                              ^
../boost/spirit/home/x3/support/expectation.hpp:280:46: error: expected ')' before 'T'
../boost/spirit/home/x3/support/expectation.hpp:286:16: warning: 'if constexpr' only available with -std=c++1z or -std=gnu++1z
             if constexpr (std::is_same_v<T, bool>)
                ^~~~~~~~~
../boost/spirit/home/x3/support/expectation.hpp:286:32: error: 'is_same_v' is not a member of 'std'
             if constexpr (std::is_same_v<T, bool>)
                                ^~~~~~~~~
../boost/spirit/home/x3/support/expectation.hpp:286:32: note: suggested alternative: 'is_same'
             if constexpr (std::is_same_v<T, bool>)
                                ^~~~~~~~~
                                is_same
../boost/spirit/home/x3/support/expectation.hpp:286:43: error: expected primary-expression before ',' token
             if constexpr (std::is_same_v<T, bool>)
                                           ^
../boost/spirit/home/x3/support/expectation.hpp:286:45: error: expected primary-expression before 'bool'
             if constexpr (std::is_same_v<T, bool>)
                                             ^~~~
../boost/spirit/home/x3/support/expectation.hpp:286:45: error: expected ')' before 'bool'
../boost/spirit/home/x3/support/expectation.hpp: In function 'constexpr void boost::spirit::x3::non_throwing::set_expectation_failure(const AnyExpectationFailure&, const Context&)':
../boost/spirit/home/x3/support/expectation.hpp:334:23: error: 'is_same_v' is not a member of 'std'
                 !std::is_same_v<T, unused_type>,
                       ^~~~~~~~~
../boost/spirit/home/x3/support/expectation.hpp:334:23: note: suggested alternative: 'is_same'
                 !std::is_same_v<T, unused_type>,
                       ^~~~~~~~~
                       is_same
../boost/spirit/home/x3/support/expectation.hpp:334:34: error: expected primary-expression before ',' token
                 !std::is_same_v<T, unused_type>,
                                  ^
../boost/spirit/home/x3/support/expectation.hpp:334:32: warning: logical not is only applied to the left hand side of comparison [-Wlogical-not-parentheses]
                 !std::is_same_v<T, unused_type>,
                                ^
../boost/spirit/home/x3/support/expectation.hpp:334:36: error: expected string-literal before 'unused_type'
                 !std::is_same_v<T, unused_type>,
                                    ^~~~~~~~~~~
../boost/spirit/home/x3/support/expectation.hpp:334:36: error: expected ')' before 'unused_type'
../boost/spirit/home/x3/support/expectation.hpp:341:22: error: 'is_assignable_v' is not a member of 'std'
                 std::is_assignable_v<T, AnyExpectationFailure const&>,
                      ^~~~~~~~~~~~~~~
../boost/spirit/home/x3/support/expectation.hpp:341:22: note: suggested alternative: 'is_assignable'
                 std::is_assignable_v<T, AnyExpectationFailure const&>,
                      ^~~~~~~~~~~~~~~
                      is_assignable
../boost/spirit/home/x3/support/expectation.hpp:341:39: error: expected primary-expression before ',' token
                 std::is_assignable_v<T, AnyExpectationFailure const&>,
                                       ^
../boost/spirit/home/x3/support/expectation.hpp:341:41: error: expected string-literal before 'AnyExpectationFailure'
                 std::is_assignable_v<T, AnyExpectationFailure const&>,
                                         ^~~~~~~~~~~~~~~~~~~~~
../boost/spirit/home/x3/support/expectation.hpp:341:41: error: expected ')' before 'AnyExpectationFailure'
../boost/spirit/home/x3/support/expectation.hpp: In function 'constexpr decltype(auto) boost::spirit::x3::non_throwing::get_expectation_failure(const Context&)':
../boost/spirit/home/x3/support/expectation.hpp:361:23: error: 'is_same_v' is not a member of 'std'
                 !std::is_same_v<T, unused_type>,
                       ^~~~~~~~~
../boost/spirit/home/x3/support/expectation.hpp:361:23: note: suggested alternative: 'is_same'
                 !std::is_same_v<T, unused_type>,
                       ^~~~~~~~~
                       is_same
../boost/spirit/home/x3/support/expectation.hpp:361:34: error: expected primary-expression before ',' token
                 !std::is_same_v<T, unused_type>,
                                  ^
../boost/spirit/home/x3/support/expectation.hpp:361:32: warning: logical not is only applied to the left hand side of comparison [-Wlogical-not-parentheses]
                 !std::is_same_v<T, unused_type>,
                                ^
../boost/spirit/home/x3/support/expectation.hpp:361:36: error: expected string-literal before 'unused_type'
                 !std::is_same_v<T, unused_type>,
                                    ^~~~~~~~~~~
../boost/spirit/home/x3/support/expectation.hpp:361:36: error: expected ')' before 'unused_type'
../boost/spirit/home/x3/support/expectation.hpp: In function 'constexpr void boost::spirit::x3::non_throwing::clear_expectation_failure(const Context&)':
../boost/spirit/home/x3/support/expectation.hpp:379:23: error: 'is_same_v' is not a member of 'std'
                 !std::is_same_v<T, unused_type>,
                       ^~~~~~~~~
../boost/spirit/home/x3/support/expectation.hpp:379:23: note: suggested alternative: 'is_same'
                 !std::is_same_v<T, unused_type>,
                       ^~~~~~~~~
                       is_same
../boost/spirit/home/x3/support/expectation.hpp:379:34: error: expected primary-expression before ',' token
                 !std::is_same_v<T, unused_type>,
                                  ^
../boost/spirit/home/x3/support/expectation.hpp:379:32: warning: logical not is only applied to the left hand side of comparison [-Wlogical-not-parentheses]
                 !std::is_same_v<T, unused_type>,
                                ^
../boost/spirit/home/x3/support/expectation.hpp:379:36: error: expected string-literal before 'unused_type'
                 !std::is_same_v<T, unused_type>,
                                    ^~~~~~~~~~~
../boost/spirit/home/x3/support/expectation.hpp:379:36: error: expected ')' before 'unused_type'
In file included from ../boost/spirit/home/x3/auxiliary/eps.hpp:10:0,
                 from ../boost/spirit/home/x3/auxiliary.hpp:12,
                 from ../boost/spirit/home/x3.hpp:62,
                 from ../libs/spirit/test/x3/expect.ipp:9,
                 from ../libs/spirit/test/x3/expect_nothrow.cpp:8:
../boost/spirit/home/x3/core/skip_over.hpp: In function 'void boost::spirit::x3::detail::skip_over(Iterator&, const Iterator&, Context&, const Skipper&)':
../boost/spirit/home/x3/core/skip_over.hpp:74:16: warning: 'if constexpr' only available with -std=c++1z or -std=gnu++1z
             if constexpr (std::is_same_v<expectation_failure_t<Context>, unused_type>)
                ^~~~~~~~~
../boost/spirit/home/x3/core/skip_over.hpp:74:32: error: 'is_same_v' is not a member of 'std'
             if constexpr (std::is_same_v<expectation_failure_t<Context>, unused_type>)
                                ^~~~~~~~~
../boost/spirit/home/x3/core/skip_over.hpp:74:32: note: suggested alternative: 'is_same'
             if constexpr (std::is_same_v<expectation_failure_t<Context>, unused_type>)
                                ^~~~~~~~~
                                is_same
../boost/spirit/home/x3/core/skip_over.hpp:74:72: error: expected primary-expression before ',' token
             if constexpr (std::is_same_v<expectation_failure_t<Context>, unused_type>)
                                                                        ^
../boost/spirit/home/x3/core/skip_over.hpp:74:85: error: expected primary-expression before '>' token
             if constexpr (std::is_same_v<expectation_failure_t<Context>, unused_type>)
                                                                                     ^
../boost/spirit/home/x3/core/skip_over.hpp:74:86: error: expected primary-expression before ')' token
             if constexpr (std::is_same_v<expectation_failure_t<Context>, unused_type>)
                                                                                      ^
In file included from ../boost/spirit/home/x3/directive.hpp:23:0,
                 from ../boost/spirit/home/x3.hpp:64,
                 from ../libs/spirit/test/x3/expect.ipp:9,
                 from ../libs/spirit/test/x3/expect_nothrow.cpp:8:
../boost/spirit/home/x3/directive/skip.hpp: In member function 'bool boost::spirit::x3::skip_directive<Subject, Skipper>::parse(Iterator&, const Iterator&, const Context&, RContext&, Attribute&) const':
../boost/spirit/home/x3/directive/skip.hpp:110:23: error: 'is_same_v' is not a member of 'std'
                 !std::is_same_v<expectation_failure_t<Context>, unused_type>,
                       ^~~~~~~~~
../boost/spirit/home/x3/directive/skip.hpp:110:23: note: suggested alternative: 'is_same'
                 !std::is_same_v<expectation_failure_t<Context>, unused_type>,
                       ^~~~~~~~~
                       is_same
../boost/spirit/home/x3/directive/skip.hpp:110:63: error: expected primary-expression before ',' token
                 !std::is_same_v<expectation_failure_t<Context>, unused_type>,
                                                               ^
../boost/spirit/home/x3/directive/skip.hpp:110:32: warning: logical not is only applied to the left hand side of comparison [-Wlogical-not-parentheses]
                 !std::is_same_v<expectation_failure_t<Context>, unused_type>,
                                ^
../boost/spirit/home/x3/directive/skip.hpp:110:65: error: expected string-literal before 'unused_type'
                 !std::is_same_v<expectation_failure_t<Context>, unused_type>,
                                                                 ^~~~~~~~~~~
../boost/spirit/home/x3/directive/skip.hpp:110:65: error: expected ')' before 'unused_type'
In file included from ../libs/spirit/test/x3/expect_nothrow.cpp:8:0:
../libs/spirit/test/x3/expect.ipp: At global scope:
../libs/spirit/test/x3/expect.ipp:90:69: error: 'is_const_v' is not a member of 'std'
     template <typename T, typename Enabled = std::enable_if_t<!std::is_const_v<T>>>
                                                                     ^~~~~~~~~~
../libs/spirit/test/x3/expect.ipp:90:69: note: suggested alternative: 'is_const'
     template <typename T, typename Enabled = std::enable_if_t<!std::is_const_v<T>>>
                                                                     ^~~~~~~~~~
                                                                     is_const
../libs/spirit/test/x3/expect.ipp:90:79: warning: logical not is only applied to the left hand side of comparison [-Wlogical-not-parentheses]
     template <typename T, typename Enabled = std::enable_if_t<!std::is_const_v<T>>>
                                                                               ^
../libs/spirit/test/x3/expect.ipp:90:80: error: template argument 1 is invalid
     template <typename T, typename Enabled = std::enable_if_t<!std::is_const_v<T>>>
                                                                                ^
../libs/spirit/test/x3/expect.ipp:90:83: error: expected unqualified-id before '>' token
     template <typename T, typename Enabled = std::enable_if_t<!std::is_const_v<T>>>
                                                                                   ^
../libs/spirit/test/x3/expect.ipp: In function 'int main()':
../libs/spirit/test/x3/expect.ipp:241:26: error: 'string_view_literals' is not a namespace-name
     using namespace std::string_view_literals;
                          ^~~~~~~~~~~~~~~~~~~~
../libs/spirit/test/x3/expect.ipp:241:46: error: expected namespace-name before ';' token
     using namespace std::string_view_literals;
                                              ^
In file included from ../boost/preprocessor/tuple/elem.hpp:20:0,
                 from ../boost/preprocessor/arithmetic/add.hpp:66,
                 from ../boost/mpl/aux_/preprocessor/def_params_tail.hpp:66,
                 from ../boost/mpl/aux_/na_spec.hpp:28,
                 from ../boost/mpl/identity.hpp:17,
                 from ../boost/spirit/home/x3/support/context.hpp:12,
                 from ../boost/spirit/home/x3/core/parser.hpp:18,
                 from ../boost/spirit/home/x3/auxiliary/any_parser.hpp:11,
                 from ../boost/spirit/home/x3/auxiliary.hpp:11,
                 from ../boost/spirit/home/x3.hpp:62,
                 from ../libs/spirit/test/x3/expect.ipp:9,
                 from ../libs/spirit/test/x3/expect_nothrow.cpp:8:
../libs/spirit/test/x3/expect.ipp:290:37: error: unable to find string literal operator 'operator""sv' with 'const char [4]', 'long unsigned int' arguments
             BOOST_TEST(x.which() == "'o'"sv);
                                     ^
../boost/preprocessor/facilities/expand.hpp:26:31: note: in definition of macro 'BOOST_PP_EXPAND_I'
 # define BOOST_PP_EXPAND_I(x) x
                               ^
../libs/spirit/test/x3/expect.ipp:190:32: note: in expansion of macro 'BOOST_PP_EXPAND'
 #define TEST_FAILURE_IMPL(...) BOOST_PP_EXPAND(BOOST_PP_OVERLOAD(TEST_FAILURE_IMPL_, __VA_ARGS__) (__VA_ARGS__))
                                ^~~~~~~~~~~~~~~
../libs/spirit/test/x3/expect.ipp:137:5: note: in expansion of macro 'BOOST_TEST_NO_THROW'
     BOOST_TEST_NO_THROW( \
     ^~~~~~~~~~~~~~~~~~~
../boost/preprocessor/cat.hpp:29:34: note: in expansion of macro 'TEST_FAILURE_IMPL_4'
 #    define BOOST_PP_CAT_I(a, b) a ## b
                                  ^
../libs/spirit/test/x3/expect.ipp:213:37: note: in expansion of macro 'TEST_FAILURE_IMPL'
 #define TEST_FAILURE(...)           TEST_FAILURE_IMPL(!test, __VA_ARGS__)
                                     ^~~~~~~~~~~~~~~~~
../libs/spirit/test/x3/expect.ipp:289:9: note: in expansion of macro 'TEST_FAILURE'
         TEST_FAILURE("xi", char_('x') >> expect[char_('o')], {
         ^~~~~~~~~~~~
../libs/spirit/test/x3/expect.ipp:290:13: note: in expansion of macro 'BOOST_TEST'
             BOOST_TEST(x.which() == "'o'"sv);
             ^~~~~~~~~~
../libs/spirit/test/x3/expect.ipp:291:37: error: unable to find string literal operator 'operator""sv' with 'const char [2]', 'long unsigned int' arguments
             BOOST_TEST(x.where() == "i"sv);
                                     ^
../boost/preprocessor/facilities/expand.hpp:26:31: note: in definition of macro 'BOOST_PP_EXPAND_I'
 # define BOOST_PP_EXPAND_I(x) x
                               ^
../libs/spirit/test/x3/expect.ipp:190:32: note: in expansion of macro 'BOOST_PP_EXPAND'
 #define TEST_FAILURE_IMPL(...) BOOST_PP_EXPAND(BOOST_PP_OVERLOAD(TEST_FAILURE_IMPL_, __VA_ARGS__) (__VA_ARGS__))
                                ^~~~~~~~~~~~~~~
../libs/spirit/test/x3/expect.ipp:137:5: note: in expansion of macro 'BOOST_TEST_NO_THROW'
     BOOST_TEST_NO_THROW( \
     ^~~~~~~~~~~~~~~~~~~
../boost/preprocessor/cat.hpp:29:34: note: in expansion of macro 'TEST_FAILURE_IMPL_4'
 #    define BOOST_PP_CAT_I(a, b) a ## b
                                  ^
../libs/spirit/test/x3/expect.ipp:213:37: note: in expansion of macro 'TEST_FAILURE_IMPL'
 #define TEST_FAILURE(...)           TEST_FAILURE_IMPL(!test, __VA_ARGS__)
                                     ^~~~~~~~~~~~~~~~~
../libs/spirit/test/x3/expect.ipp:289:9: note: in expansion of macro 'TEST_FAILURE'
         TEST_FAILURE("xi", char_('x') >> expect[char_('o')], {
         ^~~~~~~~~~~~
../libs/spirit/test/x3/expect.ipp:291:13: note: in expansion of macro 'BOOST_TEST'
             BOOST_TEST(x.where() == "i"sv);
             ^~~~~~~~~~
../libs/spirit/test/x3/expect.ipp:304:37: error: unable to find string literal operator 'operator""sv' with 'const char [4]', 'long unsigned int' arguments
             BOOST_TEST(x.which() == "'o'"sv);
                                     ^
../boost/preprocessor/facilities/expand.hpp:26:31: note: in definition of macro 'BOOST_PP_EXPAND_I'
 # define BOOST_PP_EXPAND_I(x) x
                               ^
../libs/spirit/test/x3/expect.ipp:190:32: note: in expansion of macro 'BOOST_PP_EXPAND'
 #define TEST_FAILURE_IMPL(...) BOOST_PP_EXPAND(BOOST_PP_OVERLOAD(TEST_FAILURE_IMPL_, __VA_ARGS__) (__VA_ARGS__))
                                ^~~~~~~~~~~~~~~
../libs/spirit/test/x3/expect.ipp:137:5: note: in expansion of macro 'BOOST_TEST_NO_THROW'
     BOOST_TEST_NO_THROW( \
     ^~~~~~~~~~~~~~~~~~~
../boost/preprocessor/cat.hpp:29:34: note: in expansion of macro 'TEST_FAILURE_IMPL_4'
 #    define BOOST_PP_CAT_I(a, b) a ## b
                                  ^
../libs/spirit/test/x3/expect.ipp:213:37: note: in expansion of macro 'TEST_FAILURE_IMPL'
 #define TEST_FAILURE(...)           TEST_FAILURE_IMPL(!test, __VA_ARGS__)
                                     ^~~~~~~~~~~~~~~~~
../libs/spirit/test/x3/expect.ipp:302:9: note: in expansion of macro 'TEST_FAILURE'
         TEST_FAILURE("xi", char_('x') > char_('o'),
         ^~~~~~~~~~~~
../libs/spirit/test/x3/expect.ipp:304:13: note: in expansion of macro 'BOOST_TEST'
             BOOST_TEST(x.which() == "'o'"sv);
             ^~~~~~~~~~
../libs/spirit/test/x3/expect.ipp:305:37: error: unable to find string literal operator 'operator""sv' with 'const char [2]', 'long unsigned int' arguments
             BOOST_TEST(x.where() == "i"sv);
                                     ^
../boost/preprocessor/facilities/expand.hpp:26:31: note: in definition of macro 'BOOST_PP_EXPAND_I'
 # define BOOST_PP_EXPAND_I(x) x
                               ^
../libs/spirit/test/x3/expect.ipp:190:32: note: in expansion of macro 'BOOST_PP_EXPAND'
 #define TEST_FAILURE_IMPL(...) BOOST_PP_EXPAND(BOOST_PP_OVERLOAD(TEST_FAILURE_IMPL_, __VA_ARGS__) (__VA_ARGS__))
                                ^~~~~~~~~~~~~~~
../libs/spirit/test/x3/expect.ipp:137:5: note: in expansion of macro 'BOOST_TEST_NO_THROW'
     BOOST_TEST_NO_THROW( \
     ^~~~~~~~~~~~~~~~~~~
../boost/preprocessor/cat.hpp:29:34: note: in expansion of macro 'TEST_FAILURE_IMPL_4'
 #    define BOOST_PP_CAT_I(a, b) a ## b
                                  ^
../libs/spirit/test/x3/expect.ipp:213:37: note: in expansion of macro 'TEST_FAILURE_IMPL'
 #define TEST_FAILURE(...)           TEST_FAILURE_IMPL(!test, __VA_ARGS__)
                                     ^~~~~~~~~~~~~~~~~
../libs/spirit/test/x3/expect.ipp:302:9: note: in expansion of macro 'TEST_FAILURE'
         TEST_FAILURE("xi", char_('x') > char_('o'),
         ^~~~~~~~~~~~
../libs/spirit/test/x3/expect.ipp:305:13: note: in expansion of macro 'BOOST_TEST'
             BOOST_TEST(x.where() == "i"sv);
             ^~~~~~~~~~
../libs/spirit/test/x3/expect.ipp:314:37: error: unable to find string literal operator 'operator""sv' with 'const char [4]', 'long unsigned int' arguments
             BOOST_TEST(x.where() == "y:a"sv);
                                     ^
../boost/preprocessor/facilities/expand.hpp:26:31: note: in definition of macro 'BOOST_PP_EXPAND_I'
 # define BOOST_PP_EXPAND_I(x) x
                               ^
../libs/spirit/test/x3/expect.ipp:190:32: note: in expansion of macro 'BOOST_PP_EXPAND'
 #define TEST_FAILURE_IMPL(...) BOOST_PP_EXPAND(BOOST_PP_OVERLOAD(TEST_FAILURE_IMPL_, __VA_ARGS__) (__VA_ARGS__))
                                ^~~~~~~~~~~~~~~
../libs/spirit/test/x3/expect.ipp:137:5: note: in expansion of macro 'BOOST_TEST_NO_THROW'
     BOOST_TEST_NO_THROW( \
     ^~~~~~~~~~~~~~~~~~~
../boost/preprocessor/cat.hpp:29:34: note: in expansion of macro 'TEST_FAILURE_IMPL_4'
 #    define BOOST_PP_CAT_I(a, b) a ## b
                                  ^
../libs/spirit/test/x3/expect.ipp:213:37: note: in expansion of macro 'TEST_FAILURE_IMPL'
 #define TEST_FAILURE(...)           TEST_FAILURE_IMPL(!test, __VA_ARGS__)
                                     ^~~~~~~~~~~~~~~~~
../libs/spirit/test/x3/expect.ipp:311:9: note: in expansion of macro 'TEST_FAILURE'
         TEST_FAILURE("ay:a", char_ > char_('x') >> ':' > 'a',
         ^~~~~~~~~~~~
../libs/spirit/test/x3/expect.ipp:314:13: note: in expansion of macro 'BOOST_TEST'
             BOOST_TEST(x.where() == "y:a"sv);
             ^~~~~~~~~~
In file included from ../libs/spirit/test/x3/expect_nothrow.cpp:8:0:
../libs/spirit/test/x3/expect.ipp: In instantiation of 'auto detail::wrap_with_expectation_failure(expectation_failure_optional_t&, const T&) [with T = boost::fusion::vector<char, char, char>; expectation_failure_optional_t = boost::optional<boost::spirit::x3::non_throwing::expectation_failure<const char*> >]':
../libs/spirit/test/x3/expect.ipp:333:9:   required from here
../libs/spirit/test/x3/expect.ipp:99:59: error: no match for 'operator[]' (operand types are 'boost::spirit::x3::with_gen<boost::spirit::x3::expectation_failure_tag, boost::optional<boost::spirit::x3::non_throwing::expectation_failure<const char*> >&>' and 'const boost::fusion::vector<char, char, char>')
         return x3::with<x3::expectation_failure_tag>(xopt)[skipper];
                ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^
In file included from ../boost/spirit/home/x3/directive.hpp:24:0,
                 from ../boost/spirit/home/x3.hpp:64,
                 from ../libs/spirit/test/x3/expect.ipp:9,
                 from ../libs/spirit/test/x3/expect_nothrow.cpp:8:
../boost/spirit/home/x3/directive/with.hpp:73:9: note: candidate: template<class Subject> constexpr boost::spirit::x3::with_directive<typename boost::spirit::x3::extension::as_parser<Expr>::value_type, ID, T> boost::spirit::x3::with_gen<ID, T>::operator[](const Subject&) const [with Subject = Subject; ID = boost::spirit::x3::expectation_failure_tag; T = boost::optional<boost::spirit::x3::non_throwing::expectation_failure<const char*> >&]
         operator[](Subject const& subject) const
         ^~~~~~~~
../boost/spirit/home/x3/directive/with.hpp:73:9: note:   template argument deduction/substitution failed:
../boost/spirit/home/x3/directive/with.hpp: In substitution of 'template<class Subject> constexpr boost::spirit::x3::with_directive<typename boost::spirit::x3::extension::as_parser<T>::value_type, boost::spirit::x3::expectation_failure_tag, boost::optional<boost::spirit::x3::non_throwing::expectation_failure<const char*> >&> boost::spirit::x3::with_gen<boost::spirit::x3::expectation_failure_tag, boost::optional<boost::spirit::x3::non_throwing::expectation_failure<const char*> >&>::operator[]<Subject>(const Subject&) const [with Subject = boost::fusion::vector<char, char, char>]':
../libs/spirit/test/x3/expect.ipp:99:59:   required from 'auto detail::wrap_with_expectation_failure(expectation_failure_optional_t&, const T&) [with T = boost::fusion::vector<char, char, char>; expectation_failure_optional_t = boost::optional<boost::spirit::x3::non_throwing::expectation_failure<const char*> >]'
../libs/spirit/test/x3/expect.ipp:333:9:   required from here
../boost/spirit/home/x3/directive/with.hpp:73:9: error: no type named 'value_type' in 'struct boost::spirit::x3::extension::as_parser<boost::fusion::vector<char, char, char>, void>'
In file included from ../boost/preprocessor/tuple/elem.hpp:20:0,
                 from ../boost/preprocessor/arithmetic/add.hpp:66,
                 from ../boost/mpl/aux_/preprocessor/def_params_tail.hpp:66,
                 from ../boost/mpl/aux_/na_spec.hpp:28,
                 from ../boost/mpl/identity.hpp:17,
                 from ../boost/spirit/home/x3/support/context.hpp:12,
                 from ../boost/spirit/home/x3/core/parser.hpp:18,
                 from ../boost/spirit/home/x3/auxiliary/any_parser.hpp:11,
                 from ../boost/spirit/home/x3/auxiliary.hpp:11,
                 from ../boost/spirit/home/x3.hpp:62,
                 from ../libs/spirit/test/x3/expect.ipp:9,
                 from ../libs/spirit/test/x3/expect_nothrow.cpp:8:
../libs/spirit/test/x3/expect.ipp:129:9: error: invalid use of void expression
         )); \
         ^
../boost/preprocessor/facilities/expand.hpp:26:31: note: in definition of macro 'BOOST_PP_EXPAND_I'
 # define BOOST_PP_EXPAND_I(x) x
                               ^
../libs/spirit/test/x3/expect.ipp:133:33: note: in expansion of macro 'BOOST_PP_EXPAND'
 # define TEST_SUCCESS_IMPL(...) BOOST_PP_EXPAND(BOOST_PP_OVERLOAD(TEST_SUCCESS_IMPL_, __VA_ARGS__) (__VA_ARGS__))
                                 ^~~~~~~~~~~~~~~
../libs/spirit/test/x3/expect.ipp:122:5: note: in expansion of macro 'BOOST_TEST_NO_THROW'
     BOOST_TEST_NO_THROW({ \
     ^~~~~~~~~~~~~~~~~~~
../libs/spirit/test/x3/expect.ipp:124:9: note: in expansion of macro 'BOOST_TEST'
         BOOST_TEST(tester( \
         ^~~~~~~~~~
../boost/preprocessor/cat.hpp:29:34: note: in expansion of macro 'TEST_SUCCESS_IMPL_5'
 #    define BOOST_PP_CAT_I(a, b) a ## b
                                  ^
../boost/preprocessor/cat.hpp:22:32: note: in expansion of macro 'BOOST_PP_CAT_I'
 #    define BOOST_PP_CAT(a, b) BOOST_PP_CAT_I(a, b)
                                ^~~~~~~~~~~~~~
../boost/preprocessor/facilities/overload.hpp:21:41: note: in expansion of macro 'BOOST_PP_CAT'
 # define BOOST_PP_OVERLOAD(prefix, ...) BOOST_PP_CAT(prefix, BOOST_PP_VARIADIC_SIZE(__VA_ARGS__))
                                         ^~~~~~~~~~~~
../libs/spirit/test/x3/expect.ipp:133:49: note: in expansion of macro 'BOOST_PP_OVERLOAD'
 # define TEST_SUCCESS_IMPL(...) BOOST_PP_EXPAND(BOOST_PP_OVERLOAD(TEST_SUCCESS_IMPL_, __VA_ARGS__) (__VA_ARGS__))
                                                 ^~~~~~~~~~~~~~~~~
../libs/spirit/test/x3/expect.ipp:201:37: note: in expansion of macro 'TEST_SUCCESS_IMPL'
 #define TEST_ATTR_SUCCESS_PASS(...) TEST_SUCCESS_IMPL(test_attr, __VA_ARGS__)
                                     ^~~~~~~~~~~~~~~~~
../libs/spirit/test/x3/expect.ipp:333:9: note: in expansion of macro 'TEST_ATTR_SUCCESS_PASS'
         TEST_ATTR_SUCCESS_PASS(" a\n  b\n  c", char_ > char_ > char_, attr, space);
         ^~~~~~~~~~~~~~~~~~~~~~
../libs/spirit/test/x3/expect.ipp:129:9: error: invalid use of void expression
         )); \
         ^
../boost/preprocessor/facilities/expand.hpp:26:31: note: in definition of macro 'BOOST_PP_EXPAND_I'
 # define BOOST_PP_EXPAND_I(x) x
                               ^
../libs/spirit/test/x3/expect.ipp:133:33: note: in expansion of macro 'BOOST_PP_EXPAND'
 # define TEST_SUCCESS_IMPL(...) BOOST_PP_EXPAND(BOOST_PP_OVERLOAD(TEST_SUCCESS_IMPL_, __VA_ARGS__) (__VA_ARGS__))
                                 ^~~~~~~~~~~~~~~
../libs/spirit/test/x3/expect.ipp:122:5: note: in expansion of macro 'BOOST_TEST_NO_THROW'
     BOOST_TEST_NO_THROW({ \
     ^~~~~~~~~~~~~~~~~~~
../libs/spirit/test/x3/expect.ipp:124:9: note: in expansion of macro 'BOOST_TEST'
         BOOST_TEST(tester( \
         ^~~~~~~~~~
../boost/preprocessor/cat.hpp:29:34: note: in expansion of macro 'TEST_SUCCESS_IMPL_5'
 #    define BOOST_PP_CAT_I(a, b) a ## b
                                  ^
../boost/preprocessor/cat.hpp:22:32: note: in expansion of macro 'BOOST_PP_CAT_I'
 #    define BOOST_PP_CAT(a, b) BOOST_PP_CAT_I(a, b)
                                ^~~~~~~~~~~~~~
../boost/preprocessor/facilities/overload.hpp:21:41: note: in expansion of macro 'BOOST_PP_CAT'
 # define BOOST_PP_OVERLOAD(prefix, ...) BOOST_PP_CAT(prefix, BOOST_PP_VARIADIC_SIZE(__VA_ARGS__))
                                         ^~~~~~~~~~~~
../libs/spirit/test/x3/expect.ipp:133:49: note: in expansion of macro 'BOOST_PP_OVERLOAD'
 # define TEST_SUCCESS_IMPL(...) BOOST_PP_EXPAND(BOOST_PP_OVERLOAD(TEST_SUCCESS_IMPL_, __VA_ARGS__) (__VA_ARGS__))
                                                 ^~~~~~~~~~~~~~~~~
../libs/spirit/test/x3/expect.ipp:201:37: note: in expansion of macro 'TEST_SUCCESS_IMPL'
 #define TEST_ATTR_SUCCESS_PASS(...) TEST_SUCCESS_IMPL(test_attr, __VA_ARGS__)
                                     ^~~~~~~~~~~~~~~~~
../libs/spirit/test/x3/expect.ipp:341:9: note: in expansion of macro 'TEST_ATTR_SUCCESS_PASS'
         TEST_ATTR_SUCCESS_PASS(" a\n  b\n  c", char_ > char_ >> char_, attr, space);
         ^~~~~~~~~~~~~~~~~~~~~~
../libs/spirit/test/x3/expect.ipp:129:9: error: invalid use of void expression
         )); \
         ^
../boost/preprocessor/facilities/expand.hpp:26:31: note: in definition of macro 'BOOST_PP_EXPAND_I'
 # define BOOST_PP_EXPAND_I(x) x
                               ^
../libs/spirit/test/x3/expect.ipp:133:33: note: in expansion of macro 'BOOST_PP_EXPAND'
 # define TEST_SUCCESS_IMPL(...) BOOST_PP_EXPAND(BOOST_PP_OVERLOAD(TEST_SUCCESS_IMPL_, __VA_ARGS__) (__VA_ARGS__))
                                 ^~~~~~~~~~~~~~~
../libs/spirit/test/x3/expect.ipp:122:5: note: in expansion of macro 'BOOST_TEST_NO_THROW'
     BOOST_TEST_NO_THROW({ \
     ^~~~~~~~~~~~~~~~~~~
../libs/spirit/test/x3/expect.ipp:124:9: note: in expansion of macro 'BOOST_TEST'
         BOOST_TEST(tester( \
 ...

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