Test output: teeks99-dkr-mg12 - hana - test~ext~boost~fusion~vector~auto~drop_front / gcc-12~c++17
Rev 7e09330c84621efd22370bf57289b67c7283ee21 / Sat, 16 Nov 2024 09:26:04 +0000
Compile [2024-11-16 12:16:27 UTC]: fail


    "g++-12"   -fvisibility-inlines-hidden -std=c++17 -fPIC -m64 -pthread -O0 -fno-inline -Wall -fvisibility=hidden  -DBOOST_ALL_NO_LIB=1 -DBOOST_COBALT_USE_STD_PMR=1   -I".." -I"../libs/hana/test/_include" -I"/var/boost/run/boost_root/libs/assert/include" -I"/var/boost/run/boost_root/libs/core/include" -I"/var/boost/run/boost_root/libs/hana/include" -I"/var/boost/run/boost_root/libs/throw_exception/include" -I"/var/boost/run/boost_root/libs/tuple/include"  -c -o "/var/boost/run/results/boost/bin.v2/libs/hana/test/test~ext~boost~fusion~vector~auto~drop_front.test/gcc-12~c++17/debug/x86_64/debug-symbols-off/threading-multi/visibility-hidden/ext/boost/fusion/vector/auto/drop_front.o" "../libs/hana/test/ext/boost/fusion/vector/auto/drop_front.cpp"

In file included from ../boost/hana/basic_tuple.hpp:28,
                 from ../boost/hana/functional/partial.hpp:13,
                 from ../boost/hana/fold_left.hpp:19,
                 from ../boost/hana/concept/foldable.hpp:19,
                 from ../boost/hana/core/to.hpp:16,
                 from ../boost/hana/bool.hpp:17,
                 from ../boost/hana/ext/boost/fusion/detail/common.hpp:13,
                 from ../boost/hana/ext/boost/fusion/vector.hpp:15,
                 from ../libs/hana/test/ext/boost/fusion/vector/auto/_specs.hpp:9,
                 from ../libs/hana/test/ext/boost/fusion/vector/auto/drop_front.cpp:5:
../boost/hana/fwd/unpack.hpp: In instantiation of 'struct boost::hana::unpack_impl<boost::hana::ext::boost::fusion::vector_tag, void>':
../boost/hana/core/default.hpp:26:9:   required by substitution of 'template<class Method> struct boost::hana::is_default<Method, decltype ((void)(static_cast<boost::hana::default_>((*(Method*)(0)))))> [with Method = boost::hana::unpack_impl<boost::hana::ext::boost::fusion::vector_tag, void>]'
../boost/hana/concept/foldable.hpp:28:65:   required from 'struct boost::hana::Foldable<boost::hana::ext::boost::fusion::vector_tag>'
../boost/hana/length.hpp:27:15:   required from 'constexpr auto boost::hana::length_t::operator()(const Xs&) const [with Xs = boost::fusion::vector<>]'
../boost/hana/ext/boost/fusion/vector.hpp:92:62:   required from 'static constexpr auto boost::hana::drop_front_impl<boost::hana::ext::boost::fusion::vector_tag>::apply(Xs&&, const N&) [with Xs = boost::fusion::vector<>; N = boost::hana::integral_constant<long unsigned int, 0>]'
../boost/hana/drop_front.hpp:41:32:   required from 'constexpr auto boost::hana::drop_front_t::operator()(Xs&&, const N&) const [with Xs = boost::fusion::vector<>; N = boost::hana::integral_constant<long unsigned int, 0>]'
../libs/hana/test/_include/auto/drop_front.hpp:22:5:   required from here
../boost/hana/fwd/unpack.hpp:84:12: error: ambiguous template instantiation for 'struct boost::hana::unpack_impl<boost::hana::ext::boost::fusion::vector_tag, boost::hana::when<true> >'
   84 |     struct unpack_impl : unpack_impl<T, when<true>> { };
      |            ^~~~~~~~~~~
In file included from ../boost/hana/fold_left.hpp:20:
../boost/hana/unpack.hpp:52:12: note: candidates are: 'template<class T, bool condition> struct boost::hana::unpack_impl<T, boost::hana::when<condition> > [with T = boost::hana::ext::boost::fusion::vector_tag; bool condition = true]'
   52 |     struct unpack_impl<T, when<condition>> : default_ {
      |            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../boost/hana/unpack.hpp:62:12: note:                 'template<class It> struct boost::hana::unpack_impl<It, boost::hana::when<(boost::hana::Iterable<It>::value && (! boost::hana::is_default<boost::hana::length_impl<It> >::value))> > [with It = boost::hana::ext::boost::fusion::vector_tag]'
   62 |     struct unpack_impl<It, when<
      |            ^~~~~~~~~~~~~~~~~~~~~
   63 |         hana::Iterable<It>::value && !is_default<length_impl<It>>::value
      |         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   64 |     >> {
      |     ~~      
../boost/hana/fwd/unpack.hpp:84:12: error: invalid use of incomplete type 'struct boost::hana::unpack_impl<boost::hana::ext::boost::fusion::vector_tag, boost::hana::when<true> >'
   84 |     struct unpack_impl : unpack_impl<T, when<true>> { };
      |            ^~~~~~~~~~~
../boost/hana/fwd/unpack.hpp:84:12: note: declaration of 'struct boost::hana::unpack_impl<boost::hana::ext::boost::fusion::vector_tag, boost::hana::when<true> >'
In file included from ../boost/hana/detail/operators/comparable.hpp:15,
                 from ../boost/hana/pair.hpp:20,
                 from ../boost/hana/unpack.hpp:26:
../boost/hana/fwd/equal.hpp: In instantiation of 'struct boost::hana::equal_impl<boost::hana::ext::boost::fusion::vector_tag, boost::hana::ext::boost::fusion::vector_tag, void>':
../boost/hana/equal.hpp:50:28:   required from 'constexpr auto boost::hana::equal_t::operator()(X&&, Y&&) const [with X = boost::fusion::vector<>; Y = boost::fusion::vector<>]'
../libs/hana/test/_include/auto/drop_front.hpp:22:5:   required from here
../boost/hana/fwd/equal.hpp:69:12: error: ambiguous template instantiation for 'struct boost::hana::equal_impl<boost::hana::ext::boost::fusion::vector_tag, boost::hana::ext::boost::fusion::vector_tag, boost::hana::when<true> >'
   69 |     struct equal_impl : equal_impl<T, U, when<true>> { };
      |            ^~~~~~~~~~
In file included from ../libs/hana/test/_include/auto/drop_front.hpp:11,
                 from ../libs/hana/test/ext/boost/fusion/vector/auto/drop_front.cpp:6:
../boost/hana/equal.hpp:55:12: note: candidates are: 'template<class T, class U, bool condition> struct boost::hana::equal_impl<T, U, boost::hana::when<condition> > [with T = boost::hana::ext::boost::fusion::vector_tag; U = boost::hana::ext::boost::fusion::vector_tag; bool condition = true]'
   55 |     struct equal_impl<T, U, when<condition>> : default_ {
      |            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../boost/hana/equal.hpp:168:12: note:                 'template<class T, class U> struct boost::hana::equal_impl<T, U, boost::hana::when<(boost::hana::Sequence<S>::value && boost::hana::Sequence<Tag>::value)> > [with T = boost::hana::ext::boost::fusion::vector_tag; U = boost::hana::ext::boost::fusion::vector_tag]'
  168 |     struct equal_impl<T, U, when<Sequence<T>::value && hana::Sequence<U>::value>> {
      |            ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../boost/hana/fwd/equal.hpp:69:12: error: invalid use of incomplete type 'struct boost::hana::equal_impl<boost::hana::ext::boost::fusion::vector_tag, boost::hana::ext::boost::fusion::vector_tag, boost::hana::when<true> >'
   69 |     struct equal_impl : equal_impl<T, U, when<true>> { };
      |            ^~~~~~~~~~
../boost/hana/fwd/equal.hpp:69:12: note: declaration of 'struct boost::hana::equal_impl<boost::hana::ext::boost::fusion::vector_tag, boost::hana::ext::boost::fusion::vector_tag, boost::hana::when<true> >'
../boost/hana/equal.hpp: In instantiation of 'constexpr auto boost::hana::equal_t::operator()(X&&, Y&&) const [with X = boost::fusion::vector<>; Y = boost::fusion::vector<>]':
../libs/hana/test/_include/auto/drop_front.hpp:22:5:   required from here
../boost/hana/equal.hpp:50:28: error: 'apply' is not a member of 'Equal' {aka 'boost::hana::equal_impl<boost::hana::ext::boost::fusion::vector_tag, boost::hana::ext::boost::fusion::vector_tag, void>'}
   50 |         return Equal::apply(static_cast<X&&>(x), static_cast<Y&&>(y));
      |                ~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from ../libs/hana/test/_include/auto/drop_front.hpp:8:
../libs/hana/test/_include/auto/drop_front.hpp: In lambda function:
../boost/hana/assert.hpp:227:9: error: template argument 1 is invalid
  227 |         >::value,                                                           \
      |         ^
../boost/hana/assert.hpp:240:9: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK_MSG'
  240 |         BOOST_HANA_CONSTANT_CHECK_MSG(                                      \
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../libs/hana/test/_include/auto/drop_front.hpp:22:5: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK'
   22 |     BOOST_HANA_CONSTANT_CHECK(hana::equal(
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~
../boost/hana/assert.hpp:232:10: error: no matching function for call to 'value<<expression error> >()'
  230 |         static_assert(::boost::hana::value<                                 \
      |                       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  231 |             decltype(BOOST_HANA_PP_CONCAT(__hana_tmp_, __LINE__))           \
      |             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  232 |         >(), message);                                                      \
      |         ~^~
../boost/hana/assert.hpp:240:9: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK_MSG'
  240 |         BOOST_HANA_CONSTANT_CHECK_MSG(                                      \
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../libs/hana/test/_include/auto/drop_front.hpp:22:5: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK'
   22 |     BOOST_HANA_CONSTANT_CHECK(hana::equal(
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~
In file included from ../boost/hana/concept/constant.hpp:19,
                 from ../boost/hana/core/to.hpp:15:
../boost/hana/value.hpp:31:30: note: candidate: 'template<class T> constexpr decltype(auto) boost::hana::value()'
   31 |     constexpr decltype(auto) value() {
      |                              ^~~~~
../boost/hana/value.hpp:31:30: note:   template argument deduction/substitution failed:
../boost/hana/assert.hpp:232:10: error: template argument 1 is invalid
  230 |         static_assert(::boost::hana::value<                                 \
      |                       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  231 |             decltype(BOOST_HANA_PP_CONCAT(__hana_tmp_, __LINE__))           \
      |             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  232 |         >(), message);                                                      \
      |         ~^~
../boost/hana/assert.hpp:240:9: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK_MSG'
  240 |         BOOST_HANA_CONSTANT_CHECK_MSG(                                      \
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../libs/hana/test/_include/auto/drop_front.hpp:22:5: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK'
   22 |     BOOST_HANA_CONSTANT_CHECK(hana::equal(
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~
In file included from ../boost/hana/value.hpp:13:
../boost/hana/fwd/value.hpp:65:30: note: candidate: 'template<class T> constexpr decltype(auto) boost::hana::value(const T&)'
   65 |     constexpr decltype(auto) value(T const&)
      |                              ^~~~~
../boost/hana/fwd/value.hpp:65:30: note:   candidate expects 1 argument, 0 provided
../boost/hana/assert.hpp:227:9: error: template argument 1 is invalid
  227 |         >::value,                                                           \
      |         ^
../boost/hana/assert.hpp:240:9: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK_MSG'
  240 |         BOOST_HANA_CONSTANT_CHECK_MSG(                                      \
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../libs/hana/test/_include/auto/drop_front.hpp:26:5: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK'
   26 |     BOOST_HANA_CONSTANT_CHECK(hana::equal(
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~
../boost/hana/assert.hpp:232:10: error: no matching function for call to 'value<<expression error> >()'
  230 |         static_assert(::boost::hana::value<                                 \
      |                       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  231 |             decltype(BOOST_HANA_PP_CONCAT(__hana_tmp_, __LINE__))           \
      |             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  232 |         >(), message);                                                      \
      |         ~^~
../boost/hana/assert.hpp:240:9: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK_MSG'
  240 |         BOOST_HANA_CONSTANT_CHECK_MSG(                                      \
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../libs/hana/test/_include/auto/drop_front.hpp:26:5: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK'
   26 |     BOOST_HANA_CONSTANT_CHECK(hana::equal(
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~
../boost/hana/value.hpp:31:30: note: candidate: 'template<class T> constexpr decltype(auto) boost::hana::value()'
   31 |     constexpr decltype(auto) value() {
      |                              ^~~~~
../boost/hana/value.hpp:31:30: note:   template argument deduction/substitution failed:
../boost/hana/assert.hpp:232:10: error: template argument 1 is invalid
  230 |         static_assert(::boost::hana::value<                                 \
      |                       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  231 |             decltype(BOOST_HANA_PP_CONCAT(__hana_tmp_, __LINE__))           \
      |             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  232 |         >(), message);                                                      \
      |         ~^~
../boost/hana/assert.hpp:240:9: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK_MSG'
  240 |         BOOST_HANA_CONSTANT_CHECK_MSG(                                      \
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../libs/hana/test/_include/auto/drop_front.hpp:26:5: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK'
   26 |     BOOST_HANA_CONSTANT_CHECK(hana::equal(
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~
../boost/hana/fwd/value.hpp:65:30: note: candidate: 'template<class T> constexpr decltype(auto) boost::hana::value(const T&)'
   65 |     constexpr decltype(auto) value(T const&)
      |                              ^~~~~
../boost/hana/fwd/value.hpp:65:30: note:   candidate expects 1 argument, 0 provided
../boost/hana/assert.hpp:227:9: error: template argument 1 is invalid
  227 |         >::value,                                                           \
      |         ^
../boost/hana/assert.hpp:240:9: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK_MSG'
  240 |         BOOST_HANA_CONSTANT_CHECK_MSG(                                      \
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../libs/hana/test/_include/auto/drop_front.hpp:30:5: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK'
   30 |     BOOST_HANA_CONSTANT_CHECK(hana::equal(
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~
../boost/hana/assert.hpp:232:10: error: no matching function for call to 'value<<expression error> >()'
  230 |         static_assert(::boost::hana::value<                                 \
      |                       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  231 |             decltype(BOOST_HANA_PP_CONCAT(__hana_tmp_, __LINE__))           \
      |             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  232 |         >(), message);                                                      \
      |         ~^~
../boost/hana/assert.hpp:240:9: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK_MSG'
  240 |         BOOST_HANA_CONSTANT_CHECK_MSG(                                      \
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../libs/hana/test/_include/auto/drop_front.hpp:30:5: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK'
   30 |     BOOST_HANA_CONSTANT_CHECK(hana::equal(
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~
../boost/hana/value.hpp:31:30: note: candidate: 'template<class T> constexpr decltype(auto) boost::hana::value()'
   31 |     constexpr decltype(auto) value() {
      |                              ^~~~~
../boost/hana/value.hpp:31:30: note:   template argument deduction/substitution failed:
../boost/hana/assert.hpp:232:10: error: template argument 1 is invalid
  230 |         static_assert(::boost::hana::value<                                 \
      |                       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  231 |             decltype(BOOST_HANA_PP_CONCAT(__hana_tmp_, __LINE__))           \
      |             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  232 |         >(), message);                                                      \
      |         ~^~
../boost/hana/assert.hpp:240:9: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK_MSG'
  240 |         BOOST_HANA_CONSTANT_CHECK_MSG(                                      \
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../libs/hana/test/_include/auto/drop_front.hpp:30:5: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK'
   30 |     BOOST_HANA_CONSTANT_CHECK(hana::equal(
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~
../boost/hana/fwd/value.hpp:65:30: note: candidate: 'template<class T> constexpr decltype(auto) boost::hana::value(const T&)'
   65 |     constexpr decltype(auto) value(T const&)
      |                              ^~~~~
../boost/hana/fwd/value.hpp:65:30: note:   candidate expects 1 argument, 0 provided
../boost/hana/equal.hpp: In instantiation of 'constexpr auto boost::hana::equal_t::operator()(X&&, Y&&) const [with X = boost::fusion::vector<boost::hana::test::ct_eq<0> >; Y = boost::fusion::vector<boost::hana::test::ct_eq<0> >]':
../libs/hana/test/_include/auto/drop_front.hpp:35:5:   required from here
../boost/hana/equal.hpp:50:28: error: 'apply' is not a member of 'Equal' {aka 'boost::hana::equal_impl<boost::hana::ext::boost::fusion::vector_tag, boost::hana::ext::boost::fusion::vector_tag, void>'}
   50 |         return Equal::apply(static_cast<X&&>(x), static_cast<Y&&>(y));
      |                ~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../boost/hana/assert.hpp:227:9: error: template argument 1 is invalid
  227 |         >::value,                                                           \
      |         ^
../boost/hana/assert.hpp:240:9: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK_MSG'
  240 |         BOOST_HANA_CONSTANT_CHECK_MSG(                                      \
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../libs/hana/test/_include/auto/drop_front.hpp:35:5: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK'
   35 |     BOOST_HANA_CONSTANT_CHECK(hana::equal(
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~
../boost/hana/assert.hpp:232:10: error: no matching function for call to 'value<<expression error> >()'
  230 |         static_assert(::boost::hana::value<                                 \
      |                       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  231 |             decltype(BOOST_HANA_PP_CONCAT(__hana_tmp_, __LINE__))           \
      |             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  232 |         >(), message);                                                      \
      |         ~^~
../boost/hana/assert.hpp:240:9: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK_MSG'
  240 |         BOOST_HANA_CONSTANT_CHECK_MSG(                                      \
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../libs/hana/test/_include/auto/drop_front.hpp:35:5: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK'
   35 |     BOOST_HANA_CONSTANT_CHECK(hana::equal(
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~
../boost/hana/value.hpp:31:30: note: candidate: 'template<class T> constexpr decltype(auto) boost::hana::value()'
   31 |     constexpr decltype(auto) value() {
      |                              ^~~~~
../boost/hana/value.hpp:31:30: note:   template argument deduction/substitution failed:
../boost/hana/assert.hpp:232:10: error: template argument 1 is invalid
  230 |         static_assert(::boost::hana::value<                                 \
      |                       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  231 |             decltype(BOOST_HANA_PP_CONCAT(__hana_tmp_, __LINE__))           \
      |             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  232 |         >(), message);                                                      \
      |         ~^~
../boost/hana/assert.hpp:240:9: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK_MSG'
  240 |         BOOST_HANA_CONSTANT_CHECK_MSG(                                      \
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../libs/hana/test/_include/auto/drop_front.hpp:35:5: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK'
   35 |     BOOST_HANA_CONSTANT_CHECK(hana::equal(
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~
../boost/hana/fwd/value.hpp:65:30: note: candidate: 'template<class T> constexpr decltype(auto) boost::hana::value(const T&)'
   65 |     constexpr decltype(auto) value(T const&)
      |                              ^~~~~
../boost/hana/fwd/value.hpp:65:30: note:   candidate expects 1 argument, 0 provided
../boost/hana/assert.hpp:227:9: error: template argument 1 is invalid
  227 |         >::value,                                                           \
      |         ^
../boost/hana/assert.hpp:240:9: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK_MSG'
  240 |         BOOST_HANA_CONSTANT_CHECK_MSG(                                      \
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../libs/hana/test/_include/auto/drop_front.hpp:39:5: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK'
   39 |     BOOST_HANA_CONSTANT_CHECK(hana::equal(
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~
../boost/hana/assert.hpp:232:10: error: no matching function for call to 'value<<expression error> >()'
  230 |         static_assert(::boost::hana::value<                                 \
      |                       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  231 |             decltype(BOOST_HANA_PP_CONCAT(__hana_tmp_, __LINE__))           \
      |             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  232 |         >(), message);                                                      \
      |         ~^~
../boost/hana/assert.hpp:240:9: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK_MSG'
  240 |         BOOST_HANA_CONSTANT_CHECK_MSG(                                      \
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../libs/hana/test/_include/auto/drop_front.hpp:39:5: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK'
   39 |     BOOST_HANA_CONSTANT_CHECK(hana::equal(
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~
../boost/hana/value.hpp:31:30: note: candidate: 'template<class T> constexpr decltype(auto) boost::hana::value()'
   31 |     constexpr decltype(auto) value() {
      |                              ^~~~~
../boost/hana/value.hpp:31:30: note:   template argument deduction/substitution failed:
../boost/hana/assert.hpp:232:10: error: template argument 1 is invalid
  230 |         static_assert(::boost::hana::value<                                 \
      |                       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  231 |             decltype(BOOST_HANA_PP_CONCAT(__hana_tmp_, __LINE__))           \
      |             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  232 |         >(), message);                                                      \
      |         ~^~
../boost/hana/assert.hpp:240:9: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK_MSG'
  240 |         BOOST_HANA_CONSTANT_CHECK_MSG(                                      \
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../libs/hana/test/_include/auto/drop_front.hpp:39:5: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK'
   39 |     BOOST_HANA_CONSTANT_CHECK(hana::equal(
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~
../boost/hana/fwd/value.hpp:65:30: note: candidate: 'template<class T> constexpr decltype(auto) boost::hana::value(const T&)'
   65 |     constexpr decltype(auto) value(T const&)
      |                              ^~~~~
../boost/hana/fwd/value.hpp:65:30: note:   candidate expects 1 argument, 0 provided
../boost/hana/assert.hpp:227:9: error: template argument 1 is invalid
  227 |         >::value,                                                           \
      |         ^
../boost/hana/assert.hpp:240:9: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK_MSG'
  240 |         BOOST_HANA_CONSTANT_CHECK_MSG(                                      \
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../libs/hana/test/_include/auto/drop_front.hpp:43:5: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK'
   43 |     BOOST_HANA_CONSTANT_CHECK(hana::equal(
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~
../boost/hana/assert.hpp:232:10: error: no matching function for call to 'value<<expression error> >()'
  230 |         static_assert(::boost::hana::value<                                 \
      |                       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  231 |             decltype(BOOST_HANA_PP_CONCAT(__hana_tmp_, __LINE__))           \
      |             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  232 |         >(), message);                                                      \
      |         ~^~
../boost/hana/assert.hpp:240:9: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK_MSG'
  240 |         BOOST_HANA_CONSTANT_CHECK_MSG(                                      \
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../libs/hana/test/_include/auto/drop_front.hpp:43:5: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK'
   43 |     BOOST_HANA_CONSTANT_CHECK(hana::equal(
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~
../boost/hana/value.hpp:31:30: note: candidate: 'template<class T> constexpr decltype(auto) boost::hana::value()'
   31 |     constexpr decltype(auto) value() {
      |                              ^~~~~
../boost/hana/value.hpp:31:30: note:   template argument deduction/substitution failed:
../boost/hana/assert.hpp:232:10: error: template argument 1 is invalid
  230 |         static_assert(::boost::hana::value<                                 \
      |                       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  231 |             decltype(BOOST_HANA_PP_CONCAT(__hana_tmp_, __LINE__))           \
      |             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  232 |         >(), message);                                                      \
      |         ~^~
../boost/hana/assert.hpp:240:9: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK_MSG'
  240 |         BOOST_HANA_CONSTANT_CHECK_MSG(                                      \
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../libs/hana/test/_include/auto/drop_front.hpp:43:5: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK'
   43 |     BOOST_HANA_CONSTANT_CHECK(hana::equal(
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~
../boost/hana/fwd/value.hpp:65:30: note: candidate: 'template<class T> constexpr decltype(auto) boost::hana::value(const T&)'
   65 |     constexpr decltype(auto) value(T const&)
      |                              ^~~~~
../boost/hana/fwd/value.hpp:65:30: note:   candidate expects 1 argument, 0 provided
../boost/hana/equal.hpp: In instantiation of 'constexpr auto boost::hana::equal_t::operator()(X&&, Y&&) const [with X = boost::fusion::vector<boost::hana::test::ct_eq<0>, boost::hana::test::ct_eq<1> >; Y = boost::fusion::vector<boost::hana::test::ct_eq<0>, boost::hana::test::ct_eq<1> >]':
../libs/hana/test/_include/auto/drop_front.hpp:48:5:   required from here
../boost/hana/equal.hpp:50:28: error: 'apply' is not a member of 'Equal' {aka 'boost::hana::equal_impl<boost::hana::ext::boost::fusion::vector_tag, boost::hana::ext::boost::fusion::vector_tag, void>'}
   50 |         return Equal::apply(static_cast<X&&>(x), static_cast<Y&&>(y));
      |                ~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../boost/hana/assert.hpp:227:9: error: template argument 1 is invalid
  227 |         >::value,                                                           \
      |         ^
../boost/hana/assert.hpp:240:9: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK_MSG'
  240 |         BOOST_HANA_CONSTANT_CHECK_MSG(                                      \
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../libs/hana/test/_include/auto/drop_front.hpp:48:5: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK'
   48 |     BOOST_HANA_CONSTANT_CHECK(hana::equal(
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~
../boost/hana/assert.hpp:232:10: error: no matching function for call to 'value<<expression error> >()'
  230 |         static_assert(::boost::hana::value<                                 \
      |                       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  231 |             decltype(BOOST_HANA_PP_CONCAT(__hana_tmp_, __LINE__))           \
      |             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  232 |         >(), message);                                                      \
      |         ~^~
../boost/hana/assert.hpp:240:9: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK_MSG'
  240 |         BOOST_HANA_CONSTANT_CHECK_MSG(                                      \
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../libs/hana/test/_include/auto/drop_front.hpp:48:5: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK'
   48 |     BOOST_HANA_CONSTANT_CHECK(hana::equal(
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~
../boost/hana/value.hpp:31:30: note: candidate: 'template<class T> constexpr decltype(auto) boost::hana::value()'
   31 |     constexpr decltype(auto) value() {
      |                              ^~~~~
../boost/hana/value.hpp:31:30: note:   template argument deduction/substitution failed:
../boost/hana/assert.hpp:232:10: error: template argument 1 is invalid
  230 |         static_assert(::boost::hana::value<                                 \
      |                       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  231 |             decltype(BOOST_HANA_PP_CONCAT(__hana_tmp_, __LINE__))           \
      |             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  232 |         >(), message);                                                      \
      |         ~^~
../boost/hana/assert.hpp:240:9: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK_MSG'
  240 |         BOOST_HANA_CONSTANT_CHECK_MSG(                                      \
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../libs/hana/test/_include/auto/drop_front.hpp:48:5: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK'
   48 |     BOOST_HANA_CONSTANT_CHECK(hana::equal(
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~
../boost/hana/fwd/value.hpp:65:30: note: candidate: 'template<class T> constexpr decltype(auto) boost::hana::value(const T&)'
   65 |     constexpr decltype(auto) value(T const&)
      |                              ^~~~~
../boost/hana/fwd/value.hpp:65:30: note:   candidate expects 1 argument, 0 provided
../boost/hana/equal.hpp: In instantiation of 'constexpr auto boost::hana::equal_t::operator()(X&&, Y&&) const [with X = boost::fusion::vector<boost::hana::test::ct_eq<1> >; Y = boost::fusion::vector<boost::hana::test::ct_eq<1> >]':
../libs/hana/test/_include/auto/drop_front.hpp:52:5:   required from here
../boost/hana/equal.hpp:50:28: error: 'apply' is not a member of 'Equal' {aka 'boost::hana::equal_impl<boost::hana::ext::boost::fusion::vector_tag, boost::hana::ext::boost::fusion::vector_tag, void>'}
   50 |         return Equal::apply(static_cast<X&&>(x), static_cast<Y&&>(y));
      |                ~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../boost/hana/assert.hpp:227:9: error: template argument 1 is invalid
  227 |         >::value,                                                           \
      |         ^
../boost/hana/assert.hpp:240:9: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK_MSG'
  240 |         BOOST_HANA_CONSTANT_CHECK_MSG(                                      \
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../libs/hana/test/_include/auto/drop_front.hpp:52:5: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK'
   52 |     BOOST_HANA_CONSTANT_CHECK(hana::equal(
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~
../boost/hana/assert.hpp:232:10: error: no matching function for call to 'value<<expression error> >()'
  230 |         static_assert(::boost::hana::value<                                 \
      |                       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  231 |             decltype(BOOST_HANA_PP_CONCAT(__hana_tmp_, __LINE__))           \
      |             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  232 |         >(), message);                                                      \
      |         ~^~
../boost/hana/assert.hpp:240:9: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK_MSG'
  240 |         BOOST_HANA_CONSTANT_CHECK_MSG(                                      \
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../libs/hana/test/_include/auto/drop_front.hpp:52:5: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK'
   52 |     BOOST_HANA_CONSTANT_CHECK(hana::equal(
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~
../boost/hana/value.hpp:31:30: note: candidate: 'template<class T> constexpr decltype(auto) boost::hana::value()'
   31 |     constexpr decltype(auto) value() {
      |                              ^~~~~
../boost/hana/value.hpp:31:30: note:   template argument deduction/substitution failed:
../boost/hana/assert.hpp:232:10: error: template argument 1 is invalid
  230 |         static_assert(::boost::hana::value<                                 \
      |                       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  231 |             decltype(BOOST_HANA_PP_CONCAT(__hana_tmp_, __LINE__))           \
      |             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  232 |         >(), message);                                                      \
      |         ~^~
../boost/hana/assert.hpp:240:9: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK_MSG'
  240 |         BOOST_HANA_CONSTANT_CHECK_MSG(                                      \
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../libs/hana/test/_include/auto/drop_front.hpp:52:5: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK'
   52 |     BOOST_HANA_CONSTANT_CHECK(hana::equal(
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~
../boost/hana/fwd/value.hpp:65:30: note: candidate: 'template<class T> constexpr decltype(auto) boost::hana::value(const T&)'
   65 |     constexpr decltype(auto) value(T const&)
      |                              ^~~~~
../boost/hana/fwd/value.hpp:65:30: note:   candidate expects 1 argument, 0 provided
../boost/hana/assert.hpp:227:9: error: template argument 1 is invalid
  227 |         >::value,                                                           \
      |         ^
../boost/hana/assert.hpp:240:9: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK_MSG'
  240 |         BOOST_HANA_CONSTANT_CHECK_MSG(                                      \
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../libs/hana/test/_include/auto/drop_front.hpp:56:5: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK'
   56 |     BOOST_HANA_CONSTANT_CHECK(hana::equal(
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~
../boost/hana/assert.hpp:232:10: error: no matching function for call to 'value<<expression error> >()'
  230 |         static_assert(::boost::hana::value<                                 \
      |                       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  231 |             decltype(BOOST_HANA_PP_CONCAT(__hana_tmp_, __LINE__))           \
      |             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  232 |         >(), message);                                                      \
      |         ~^~
../boost/hana/assert.hpp:240:9: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK_MSG'
  240 |         BOOST_HANA_CONSTANT_CHECK_MSG(                                      \
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../libs/hana/test/_include/auto/drop_front.hpp:56:5: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK'
   56 |     BOOST_HANA_CONSTANT_CHECK(hana::equal(
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~
../boost/hana/value.hpp:31:30: note: candidate: 'template<class T> constexpr decltype(auto) boost::hana::value()'
   31 |     constexpr decltype(auto) value() {
      |                              ^~~~~
../boost/hana/value.hpp:31:30: note:   template argument deduction/substitution failed:
../boost/hana/assert.hpp:232:10: error: template argument 1 is invalid
  230 |         static_assert(::boost::hana::value<                                 \
      |                       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  231 |             decltype(BOOST_HANA_PP_CONCAT(__hana_tmp_, __LINE__))           \
      |             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  232 |         >(), message);                                                      \
      |         ~^~
../boost/hana/assert.hpp:240:9: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK_MSG'
  240 |         BOOST_HANA_CONSTANT_CHECK_MSG(                                      \
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../libs/hana/test/_include/auto/drop_front.hpp:56:5: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK'
   56 |     BOOST_HANA_CONSTANT_CHECK(hana::equal(
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~
../boost/hana/fwd/value.hpp:65:30: note: candidate: 'template<class T> constexpr decltype(auto) boost::hana::value(const T&)'
   65 |     constexpr decltype(auto) value(T const&)
      |                              ^~~~~
../boost/hana/fwd/value.hpp:65:30: note:   candidate expects 1 argument, 0 provided
../boost/hana/equal.hpp: In instantiation of 'constexpr auto boost::hana::equal_t::operator()(X&&, Y&&) const [with X = boost::fusion::vector<boost::hana::test::ct_eq<0>, boost::hana::test::ct_eq<1>, boost::hana::test::ct_eq<2> >; Y = boost::fusion::vector<boost::hana::test::ct_eq<0>, boost::hana::test::ct_eq<1>, boost::hana::test::ct_eq<2> >]':
../libs/hana/test/_include/auto/drop_front.hpp:61:5:   required from here
../boost/hana/equal.hpp:50:28: error: 'apply' is not a member of 'Equal' {aka 'boost::hana::equal_impl<boost::hana::ext::boost::fusion::vector_tag, boost::hana::ext::boost::fusion::vector_tag, void>'}
   50 |         return Equal::apply(static_cast<X&&>(x), static_cast<Y&&>(y));
      |                ~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../boost/hana/assert.hpp:227:9: error: template argument 1 is invalid
  227 |         >::value,                                                           \
      |         ^
../boost/hana/assert.hpp:240:9: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK_MSG'
  240 |         BOOST_HANA_CONSTANT_CHECK_MSG(                                      \
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../libs/hana/test/_include/auto/drop_front.hpp:61:5: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK'
   61 |     BOOST_HANA_CONSTANT_CHECK(hana::equal(
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~
../boost/hana/assert.hpp:232:10: error: no matching function for call to 'value<<expression error> >()'
  230 |         static_assert(::boost::hana::value<                                 \
      |                       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  231 |             decltype(BOOST_HANA_PP_CONCAT(__hana_tmp_, __LINE__))           \
      |             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  232 |         >(), message);                                                      \
      |         ~^~
../boost/hana/assert.hpp:240:9: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK_MSG'
  240 |         BOOST_HANA_CONSTANT_CHECK_MSG(                                      \
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../libs/hana/test/_include/auto/drop_front.hpp:61:5: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK'
   61 |     BOOST_HANA_CONSTANT_CHECK(hana::equal(
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~
../boost/hana/value.hpp:31:30: note: candidate: 'template<class T> constexpr decltype(auto) boost::hana::value()'
   31 |     constexpr decltype(auto) value() {
      |                              ^~~~~
../boost/hana/value.hpp:31:30: note:   template argument deduction/substitution failed:
../boost/hana/assert.hpp:232:10: error: template argument 1 is invalid
  230 |         static_assert(::boost::hana::value<                                 \
      |                       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  231 |             decltype(BOOST_HANA_PP_CONCAT(__hana_tmp_, __LINE__))           \
      |             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  232 |         >(), message);                                                      \
      |         ~^~
../boost/hana/assert.hpp:240:9: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK_MSG'
  240 |         BOOST_HANA_CONSTANT_CHECK_MSG(                                      \
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../libs/hana/test/_include/auto/drop_front.hpp:61:5: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK'
   61 |     BOOST_HANA_CONSTANT_CHECK(hana::equal(
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~
../boost/hana/fwd/value.hpp:65:30: note: candidate: 'template<class T> constexpr decltype(auto) boost::hana::value(const T&)'
   65 |     constexpr decltype(auto) value(T const&)
      |                              ^~~~~
../boost/hana/fwd/value.hpp:65:30: note:   candidate expects 1 argument, 0 provided
../boost/hana/equal.hpp: In instantiation of 'constexpr auto boost::hana::equal_t::operator()(X&&, Y&&) const [with X = boost::fusion::vector<boost::hana::test::ct_eq<1>, boost::hana::test::ct_eq<2> >; Y = boost::fusion::vector<boost::hana::test::ct_eq<1>, boost::hana::test::ct_eq<2> >]':
../libs/hana/test/_include/auto/drop_front.hpp:65:5:   required from here
../boost/hana/equal.hpp:50:28: error: 'apply' is not a member of 'Equal' {aka 'boost::hana::equal_impl<boost::hana::ext::boost::fusion::vector_tag, boost::hana::ext::boost::fusion::vector_tag, void>'}
   50 |         return Equal::apply(static_cast<X&&>(x), static_cast<Y&&>(y));
      |                ~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../boost/hana/assert.hpp:227:9: error: template argument 1 is invalid
  227 |         >::value,                                                           \
      |         ^
../boost/hana/assert.hpp:240:9: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK_MSG'
  240 |         BOOST_HANA_CONSTANT_CHECK_MSG(                                      \
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../libs/hana/test/_include/auto/drop_front.hpp:65:5: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK'
   65 |     BOOST_HANA_CONSTANT_CHECK(hana::equal(
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~
../boost/hana/assert.hpp:232:10: error: no matching function for call to 'value<<expression error> >()'
  230 |         static_assert(::boost::hana::value<                                 \
      |                       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  231 |             decltype(BOOST_HANA_PP_CONCAT(__hana_tmp_, __LINE__))           \
      |             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  232 |         >(), message);                                                      \
      |         ~^~
../boost/hana/assert.hpp:240:9: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK_MSG'
  240 |         BOOST_HANA_CONSTANT_CHECK_MSG(                                      \
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../libs/hana/test/_include/auto/drop_front.hpp:65:5: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK'
   65 |     BOOST_HANA_CONSTANT_CHECK(hana::equal(
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~
../boost/hana/value.hpp:31:30: note: candidate: 'template<class T> constexpr decltype(auto) boost::hana::value()'
   31 |     constexpr decltype(auto) value() {
      |                              ^~~~~
../boost/hana/value.hpp:31:30: note:   template argument deduction/substitution failed:
../boost/hana/assert.hpp:232:10: error: template argument 1 is invalid
  230 |         static_assert(::boost::hana::value<                                 \
      |                       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  231 |             decltype(BOOST_HANA_PP_CONCAT(__hana_tmp_, __LINE__))           \
      |             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  232 |         >(), message);                                                      \
      |         ~^~
../boost/hana/assert.hpp:240:9: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK_MSG'
  240 |         BOOST_HANA_CONSTANT_CHECK_MSG(                                      \
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../libs/hana/test/_include/auto/drop_front.hpp:65:5: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK'
   65 |     BOOST_HANA_CONSTANT_CHECK(hana::equal(
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~
../boost/hana/fwd/value.hpp:65:30: note: candidate: 'template<class T> constexpr decltype(auto) boost::hana::value(const T&)'
   65 |     constexpr decltype(auto) value(T const&)
      |                              ^~~~~
../boost/hana/fwd/value.hpp:65:30: note:   candidate expects 1 argument, 0 provided
../boost/hana/equal.hpp: In instantiation of 'constexpr auto boost::hana::equal_t::operator()(X&&, Y&&) const [with X = boost::fusion::vector<boost::hana::test::ct_eq<2> >; Y = boost::fusion::vector<boost::hana::test::ct_eq<2> >]':
../libs/hana/test/_include/auto/drop_front.hpp:69:5:   required from here
../boost/hana/equal.hpp:50:28: error: 'apply' is not a member of 'Equal' {aka 'boost::hana::equal_impl<boost::hana::ext::boost::fusion::vector_tag, boost::hana::ext::boost::fusion::vector_tag, void>'}
   50 |         return Equal::apply(static_cast<X&&>(x), static_cast<Y&&>(y));
      |                ~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../boost/hana/assert.hpp:227:9: error: template argument 1 is invalid
  227 |         >::value,                                                           \
      |         ^
../boost/hana/assert.hpp:240:9: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK_MSG'
  240 |         BOOST_HANA_CONSTANT_CHECK_MSG(                                      \
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../libs/hana/test/_include/auto/drop_front.hpp:69:5: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK'
   69 |     BOOST_HANA_CONSTANT_CHECK(hana::equal(
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~
../boost/hana/assert.hpp:232:10: error: no matching function for call to 'value<<expression error> >()'
  230 |         static_assert(::boost::hana::value<                                 \
      |                       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  231 |             decltype(BOOST_HANA_PP_CONCAT(__hana_tmp_, __LINE__))           \
      |             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  232 |         >(), message);                                                      \
      |         ~^~
../boost/hana/assert.hpp:240:9: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK_MSG'
  240 |         BOOST_HANA_CONSTANT_CHECK_MSG(                                      \
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../libs/hana/test/_include/auto/drop_front.hpp:69:5: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK'
   69 |     BOOST_HANA_CONSTANT_CHECK(hana::equal(
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~
../boost/hana/value.hpp:31:30: note: candidate: 'template<class T> constexpr decltype(auto) boost::hana::value()'
   31 |     constexpr decltype(auto) value() {
      |                              ^~~~~
../boost/hana/value.hpp:31:30: note:   template argument deduction/substitution failed:
../boost/hana/assert.hpp:232:10: error: template argument 1 is invalid
  230 |         static_assert(::boost::hana::value<                                 \
      |                       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  231 |             decltype(BOOST_HANA_PP_CONCAT(__hana_tmp_, __LINE__))           \
      |             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  232 |         >(), message);                                                      \
      |         ~^~
../boost/hana/assert.hpp:240:9: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK_MSG'
  240 |         BOOST_HANA_CONSTANT_CHECK_MSG(                                      \
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../libs/hana/test/_include/auto/drop_front.hpp:69:5: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK'
   69 |     BOOST_HANA_CONSTANT_CHECK(hana::equal(
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~
../boost/hana/fwd/value.hpp:65:30: note: candidate: 'template<class T> constexpr decltype(auto) boost::hana::value(const T&)'
   65 |     constexpr decltype(auto) value(T const&)
      |                              ^~~~~
../boost/hana/fwd/value.hpp:65:30: note:   candidate expects 1 argument, 0 provided
../boost/hana/assert.hpp:227:9: error: template argument 1 is invalid
  227 |         >::value,                                                           \
      |         ^
../boost/hana/assert.hpp:240:9: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK_MSG'
  240 |         BOOST_HANA_CONSTANT_CHECK_MSG(                                      \
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../libs/hana/test/_include/auto/drop_front.hpp:73:5: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK'
   73 |     BOOST_HANA_CONSTANT_CHECK(hana::equal(
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~
../boost/hana/assert.hpp:232:10: error: no matching function for call to 'value<<expression error> >()'
  230 |         static_assert(::boost::hana::value<                                 \
      |                       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  231 |             decltype(BOOST_HANA_PP_CONCAT(__hana_tmp_, __LINE__))           \
      |             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  232 |         >(), message);                                                      \
      |         ~^~
../boost/hana/assert.hpp:240:9: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK_MSG'
  240 |         BOOST_HANA_CONSTANT_CHECK_MSG(                                      \
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../libs/hana/test/_include/auto/drop_front.hpp:73:5: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK'
   73 |     BOOST_HANA_CONSTANT_CHECK(hana::equal(
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~
../boost/hana/value.hpp:31:30: note: candidate: 'template<class T> constexpr decltype(auto) boost::hana::value()'
   31 |     constexpr decltype(auto) value() {
      |                              ^~~~~
../boost/hana/value.hpp:31:30: note:   template argument deduction/substitution failed:
../boost/hana/assert.hpp:232:10: error: template argument 1 is invalid
  230 |         static_assert(::boost::hana::value<                                 \
      |                       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  231 |             decltype(BOOST_HANA_PP_CONCAT(__hana_tmp_, __LINE__))           \
      |             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  232 |         >(), message);                                                      \
      |         ~^~
../boost/hana/assert.hpp:240:9: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK_MSG'
  240 |         BOOST_HANA_CONSTANT_CHECK_MSG(                                      \
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../libs/hana/test/_include/auto/drop_front.hpp:73:5: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK'
   73 |     BOOST_HANA_CONSTANT_CHECK(hana::equal(
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~
../boost/hana/fwd/value.hpp:65:30: note: candidate: 'template<class T> constexpr decltype(auto) boost::hana::value(const T&)'
   65 |     constexpr decltype(auto) value(T const&)
      |                              ^~~~~
../boost/hana/fwd/value.hpp:65:30: note:   candidate expects 1 argument, 0 provided
../boost/hana/assert.hpp:257:57: error: template argument 1 is invalid
  257 |             ::boost::hana::Constant<decltype(__hana_tmp)>::value>,          \
      |                                                         ^
../boost/hana/assert.hpp:279:9: note: in expansion of macro 'BOOST_HANA_CHECK_MSG'
  279 |         BOOST_HANA_CHECK_MSG(                                               \
      |         ^~~~~~~~~~~~~~~~~~~~
../libs/hana/test/_include/auto/drop_front.hpp:79:5: note: in expansion of macro 'BOOST_HANA_CHECK'
   79 |     BOOST_HANA_CHECK(hana::equal(
      |     ^~~~~~~~~~~~~~~~
../boost/hana/assert.hpp:256:43: error: template argument 1 is invalid
  256 |         ::boost::hana::if_(::boost::hana::bool_c<                           \
      |                                           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  257 |             ::boost::hana::Constant<decltype(__hana_tmp)>::value>,          \
      |             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../boost/hana/assert.hpp:279:9: note: in expansion of macro 'BOOST_HANA_CHECK_MSG'
  279 |         BOOST_HANA_CHECK_MSG(                                               \
      |         ^~~~~~~~~~~~~~~~~~~~
../libs/hana/test/_include/auto/drop_front.hpp:79:5: note: in expansion of macro 'BOOST_HANA_CHECK'
   79 |     BOOST_HANA_CHECK(hana::equal(
      |     ^~~~~~~~~~~~~~~~
../boost/hana/assert.hpp:257:57: error: template argument 1 is invalid
  257 |             ::boost::hana::Constant<decltype(__hana_tmp)>::value>,          \
      |                                                         ^
../boost/hana/assert.hpp:279:9: note: in expansion of macro 'BOOST_HANA_CHECK_MSG'
  279 |         BOOST_HANA_CHECK_MSG(                                               \
      |         ^~~~~~~~~~~~~~~~~~~~
../libs/hana/test/_include/auto/drop_front.hpp:84:5: note: in expansion of macro 'BOOST_HANA_CHECK'
   84 |     BOOST_HANA_CHECK(hana::equal(
      |     ^~~~~~~~~~~~~~~~
../boost/hana/assert.hpp:256:43: error: template argument 1 is invalid
  256 |         ::boost::hana::if_(::boost::hana::bool_c<                           \
      |                                           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  257 |             ::boost::hana::Constant<decltype(__hana_tmp)>::value>,          \
      |             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../boost/hana/assert.hpp:279:9: note: in expansion of macro 'BOOST_HANA_CHECK_MSG'
  279 |         BOOST_HANA_CHECK_MSG(                                               \
      |         ^~~~~~~~~~~~~~~~~~~~
../libs/hana/test/_include/auto/drop_front.hpp:84:5: note: in expansion of macro 'BOOST_HANA_CHECK'
   84 |     BOOST_HANA_CHECK(hana::equal(
      |     ^~~~~~~~~~~~~~~~
../boost/hana/assert.hpp:257:57: error: template argument 1 is invalid
  257 |             ::boost::hana::Constant<decltype(__hana_tmp)>::value>,          \
      |                                                         ^
../boost/hana/assert.hpp:279:9: note: in expansion of macro 'BOOST_HANA_CHECK_MSG'
  279 |         BOOST_HANA_CHECK_MSG(                                               \
      |         ^~~~~~~~~~~~~~~~~~~~
../libs/hana/test/_include/auto/drop_front.hpp:89:5: note: in expansion of macro 'BOOST_HANA_CHECK'
   89 |     BOOST_HANA_CHECK(hana::equal(
      |     ^~~~~~~~~~~~~~~~
../boost/hana/assert.hpp:256:43: error: template argument 1 is invalid
  256 |         ::boost::hana::if_(::boost::hana::bool_c<                           \
      |                                           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  257 |             ::boost::hana::Constant<decltype(__hana_tmp)>::value>,          \
      |             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../boost/hana/assert.hpp:279:9: note: in expansion of macro 'BOOST_HANA_CHECK_MSG'
  279 |         BOOST_HANA_CHECK_MSG(                                               \
      |         ^~~~~~~~~~~~~~~~~~~~
../libs/hana/test/_include/auto/drop_front.hpp:89:5: note: in expansion of macro 'BOOST_HANA_CHECK'
   89 |     BOOST_HANA_CHECK(hana::equal(
      |     ^~~~~~~~~~~~~~~~
../boost/hana/assert.hpp:257:57: error: template argument 1 is invalid
  257 |             ::boost::hana::Constant<decltype(__hana_tmp)>::value>,          \
      |                                                         ^
../boost/hana/assert.hpp:279:9: note: in expansion of macro 'BOOST_HANA_CHECK_MSG'
  279 |         BOOST_HANA_CHECK_MSG(                                               \
      |         ^~~~~~~~~~~~~~~~~~~~
../libs/hana/test/_include/auto/drop_front.hpp:94:5: note: in expansion of macro 'BOOST_HANA_CHECK'
   94 |     BOOST_HANA_CHECK(hana::equal(
      |     ^~~~~~~~~~~~~~~~
../boost/hana/assert.hpp:256:43: error: template argument 1 is invalid
  256 |         ::boost::hana::if_(::boost::hana::bool_c<                           \
      |                                           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  257 |             ::boost::hana::Constant<decltype(__hana_tmp)>::value>,          \
      |             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../boost/hana/assert.hpp:279:9: note: in expansion of macro 'BOOST_HANA_CHECK_MSG'
  279 |         BOOST_HANA_CHECK_MSG(                                               \
      |         ^~~~~~~~~~~~~~~~~~~~
../libs/hana/test/_include/auto/drop_front.hpp:94:5: note: in expansion of macro 'BOOST_HANA_CHECK'
   94 |     BOOST_HANA_CHECK(hana::equal(
      |     ^~~~~~~~~~~~~~~~
../boost/hana/equal.hpp: In instantiation of 'constexpr auto boost::hana::equal_t::operator()(X&&, Y&&) const [with X = boost::fusion::vector<boost::hana::test::ct_eq<1>, boost::hana::test::ct_eq<2>, boost::hana::test::ct_eq<3> >; Y = boost::fusion::vector<boost::hana::test::ct_eq<1>, boost::hana::test::ct_eq<2>, boost::hana::test::ct_eq<3> >]':
../libs/hana/test/_include/auto/drop_front.hpp:99:5:   required from here
../boost/hana/equal.hpp:50:28: error: 'apply' is not a member of 'Equal' {aka 'boost::hana::equal_impl<boost::hana::ext::boost::fusion::vector_tag, boost::hana::ext::boost::fusion::vector_tag, void>'}
   50 |         return Equal::apply(static_cast<X&&>(x), static_cast<Y&&>(y));
      |                ~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../boost/hana/assert.hpp:227:9: error: template argument 1 is invalid
  227 |         >::value,                                                           \
      |         ^
../boost/hana/assert.hpp:240:9: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK_MSG'
  240 |         BOOST_HANA_CONSTANT_CHECK_MSG(                                      \
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../libs/hana/test/_include/auto/drop_front.hpp:99:5: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK'
   99 |     BOOST_HANA_CONSTANT_CHECK(hana::equal(
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~
../boost/hana/assert.hpp:232:10: error: no matching function for call to 'value<<expression error> >()'
  230 |         static_assert(::boost::hana::value<                                 \
      |                       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  231 |             decltype(BOOST_HANA_PP_CONCAT(__hana_tmp_, __LINE__))           \
      |             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  232 |         >(), message);                                                      \
      |         ~^~
../boost/hana/assert.hpp:240:9: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK_MSG'
  240 |         BOOST_HANA_CONSTANT_CHECK_MSG(                                      \
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../libs/hana/test/_include/auto/drop_front.hpp:99:5: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK'
   99 |     BOOST_HANA_CONSTANT_CHECK(hana::equal(
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~
../boost/hana/value.hpp:31:30: note: candidate: 'template<class T> constexpr decltype(auto) boost::hana::value()'
   31 |     constexpr decltype(auto) value() {
      |                              ^~~~~
../boost/hana/value.hpp:31:30: note:   template argument deduction/substitution failed:
../boost/hana/assert.hpp:232:10: error: template argument 1 is invalid
  230 |         static_assert(::boost::hana::value<                                 \
      |                       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  231 |             decltype(BOOST_HANA_PP_CONCAT(__hana_tmp_, __LINE__))           \
      |             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  232 |         >(), message);                                                      \
      |         ~^~
../boost/hana/assert.hpp:240:9: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK_MSG'
  240 |         BOOST_HANA_CONSTANT_CHECK_MSG(                                      \
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../libs/hana/test/_include/auto/drop_front.hpp:99:5: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK'
   99 |     BOOST_HANA_CONSTANT_CHECK(hana::equal(
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~
../boost/hana/fwd/value.hpp:65:30: note: candidate: 'template<class T> constexpr decltype(auto) boost::hana::value(const T&)'
   65 |     constexpr decltype(auto) value(T const&)
      |                              ^~~~~
../boost/hana/fwd/value.hpp:65:30: note:   candidate expects 1 argument, 0 provided
../libs/hana/test/_include/auto/drop_front.hpp: In lambda function:
../boost/hana/assert.hpp:227:9: error: template argument 1 is invalid
  227 |         >::value,                                                           \
      |         ^
../boost/hana/assert.hpp:240:9: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK_MSG'
  240 |         BOOST_HANA_CONSTANT_CHECK_MSG(                                      \
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../libs/hana/test/_include/auto/drop_front.hpp:109:5: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK'
  109 |     BOOST_HANA_CONSTANT_CHECK(hana::equal(
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~
../boost/hana/assert.hpp:232:10: error: no matching function for call to 'value<<expression error> >()'
  230 |         static_assert(::boost::hana::value<                                 \
      |                       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  231 |             decltype(BOOST_HANA_PP_CONCAT(__hana_tmp_, __LINE__))           \
      |             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  232 |         >(), message);                                                      \
      |         ~^~
../boost/hana/assert.hpp:240:9: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK_MSG'
  240 |         BOOST_HANA_CONSTANT_CHECK_MSG(                                      \
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../libs/hana/test/_include/auto/drop_front.hpp:109:5: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK'
  109 |     BOOST_HANA_CONSTANT_CHECK(hana::equal(
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~
../boost/hana/value.hpp:31:30: note: candidate: 'template<class T> constexpr decltype(auto) boost::hana::value()'
   31 |     constexpr decltype(auto) value() {
      |                              ^~~~~
../boost/hana/value.hpp:31:30: note:   template argument deduction/substitution failed:
../boost/hana/assert.hpp:232:10: error: template argument 1 is invalid
  230 |         static_assert(::boost::hana::value<                                 \
      |                       ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  231 |             decltype(BOOST_HANA_PP_CONCAT(__hana_tmp_, __LINE__))           \
      |             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  232 |         >(), message);                                                      \
      |         ~^~
../boost/hana/assert.hpp:240:9: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK_MSG'
  240 |         BOOST_HANA_CONSTANT_CHECK_MSG(                                      \
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../libs/hana/test/_include/auto/drop_front.hpp:109:5: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK'
  109 |     BOOST_HANA_CONSTANT_CHECK(hana::equal(
      |     ^~~~~~~~~~~~~~~~~~~~~~~~~
../boost/hana/fwd/value.hpp:65:30: note: candidate: 'template<class T> constexpr decltype(auto) boost::hana::value(const T&)'
   65 |     constexpr decltype(auto) value(T const&)
      |                              ^~~~~
../boost/hana/fwd/value.hpp:65:30: note:   candidate expects 1 argument, 0 provided
../boost/hana/assert.hpp:227:9: error: template argument 1 is invalid
  227 |         >::value,                                                           \
      |         ^
../boost/hana/assert.hpp:240:9: note: in expansion of macro 'BOOST_HANA_CONSTANT_CHECK_MSG'
  240 |         BOOST_HANA_CONSTANT_CHECK_MSG(                                      \
      |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../libs/hana/test/_include/auto...

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