"g++-6"   -fvisibility-inlines-hidden -std=gnu++14 -fPIC -m64 -pthread -O0 -fno-inline -Wall -fvisibility=hidden  -DBOOST_ALL_NO_LIB=1 -DBOOST_CHARCONV_DYN_LINK=1 -DBOOST_CHARCONV_NO_LIB=1 -DBOOST_COBALT_USE_STD_PMR=1   -I".." -I"/var/boost/run/boost_root/libs/assert/include" -I"/var/boost/run/boost_root/libs/charconv/include" -I"/var/boost/run/boost_root/libs/core/include" -I"/var/boost/run/boost_root/libs/throw_exception/include"  -c -o "/var/boost/run/results/boost/bin.v2/libs/parser/test/parse_coords_new.test/gcc-6~gnu14/debug/x86_64/debug-symbols-off/threading-multi/visibility-hidden/parse_coords_new.o" "../libs/parser/test/parse_coords_new.cpp"

In file included from ../boost/parser/detail/text/concepts.hpp:10:0,
                 from ../boost/parser/detail/text/detail/algorithm.hpp:9,
                 from ../boost/parser/subrange.hpp:10,
                 from ../boost/parser/config.hpp:92,
                 from ../libs/parser/test/parse_coords_new.cpp:10:
../boost/parser/detail/text/utf.hpp: In function 'constexpr boost::parser::detail::text::format boost::parser::detail::text::detail::format_of()':
../boost/parser/detail/text/utf.hpp:25:16: error: expected '(' before 'constexpr'
             if constexpr (
                ^~~~~~~~~
../boost/parser/detail/text/utf.hpp:32:15: error: 'else' without a previous 'if'
             } else if (
               ^~~~
../boost/parser/detail/text/utf.hpp:33:17: error: 'is_same_v' is not a member of 'std'
                 std::is_same_v<T, char16_t>
                 ^~~
../boost/parser/detail/text/utf.hpp:33:33: error: expected primary-expression before ',' token
                 std::is_same_v<T, char16_t>
                                 ^
../boost/parser/detail/text/utf.hpp:33:35: error: expected primary-expression before 'char16_t'
                 std::is_same_v<T, char16_t>
                                   ^~~~~~~~
../boost/parser/detail/text/utf.hpp:33:35: error: expected ')' before 'char16_t'
In file included from ../boost/parser/detail/text/detail/algorithm.hpp:9:0,
                 from ../boost/parser/subrange.hpp:10,
                 from ../boost/parser/config.hpp:92,
                 from ../libs/parser/test/parse_coords_new.cpp:10:
../boost/parser/detail/text/concepts.hpp: At global scope:
../boost/parser/detail/text/concepts.hpp:232:9: error: 'is_same_v' is not a member of 'std'
         std::is_same_v<T, char16_t> || std::is_same_v<T, char32_t> ||
         ^~~
../boost/parser/detail/text/concepts.hpp:232:25: error: expected primary-expression before ',' token
         std::is_same_v<T, char16_t> || std::is_same_v<T, char32_t> ||
                         ^
In file included from ../boost/parser/config.hpp:92:0,
                 from ../libs/parser/test/parse_coords_new.cpp:10:
../boost/parser/subrange.hpp:37:69: warning: 'nodiscard' attribute directive ignored [-Wattributes]
         [[nodiscard]] constexpr subrange next(std::ptrdiff_t n = 1) const
                                                                     ^~~~~
../boost/parser/subrange.hpp:41:69: warning: 'nodiscard' attribute directive ignored [-Wattributes]
         [[nodiscard]] constexpr subrange prev(std::ptrdiff_t n = 1) const
                                                                     ^~~~~
../boost/parser/subrange.hpp:65:33: warning: 'no_unique_address' attribute directive ignored [-Wattributes]
         [[no_unique_address]] S last_;
                                 ^~~~~