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May 8, 2017 20:35
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clang scelta build error
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| In file included from /home/jackie/code/scelta/example/error_handling.cpp:6: | |
| In file included from /home/jackie/code/scelta/example/./example_utils.hpp:8: | |
| In file included from /home/jackie/code/scelta/include/scelta.hpp:10: | |
| In file included from /home/jackie/code/scelta/include/./scelta/support.hpp:8: | |
| In file included from /home/jackie/code/scelta/include/./scelta/./support/variant.hpp:8: | |
| In file included from /home/jackie/code/scelta/include/./scelta/./support/./variant/std.hpp:13: | |
| /usr/local/bin/../lib/gcc/x86_64-pc-linux-gnu/7.0.1/../../../../include/c++/7.0.1/variant:235:46: error: cannot cast 'std::variant<io_outcome::success, io_outcome::not_found>' to its private base class 'std::__detail::__variant::_Variant_storage<false, io_outcome::success, io_outcome::not_found>' | |
| return __get(std::in_place_index<_Np>, std::forward<_Variant>(__v)._M_u); | |
| ^ | |
| /usr/local/bin/../lib/gcc/x86_64-pc-linux-gnu/7.0.1/../../../../include/c++/7.0.1/variant:1233:35: note: in instantiation of function template specialization 'std::__detail::__variant::__get<1, std::variant<io_outcome::success, io_outcome::not_found> >' requested here | |
| return __detail::__variant::__get<_Np>(std::move(__v)); | |
| ^ | |
| /usr/local/bin/../lib/gcc/x86_64-pc-linux-gnu/7.0.1/../../../../include/c++/7.0.1/variant:676:9: note: in instantiation of function template specialization 'std::get<1, io_outcome::success, io_outcome::not_found>' requested here | |
| std::get<__indices>( | |
| ^ | |
| /usr/local/bin/../lib/gcc/x86_64-pc-linux-gnu/7.0.1/../../../../include/c++/7.0.1/variant:682:29: note: in instantiation of member function 'std::__detail::__variant::__gen_vtable_impl<std::__detail::__variant::_Multi_array<int (*)(const scelta::overloader<(lambda at /home/jackie/code/scelta/example/error_handling.cpp:54:9), (lambda at /home/jackie/code/scelta/example/error_handling.cpp:55:9)> &, std::variant<io_outcome::success, io_outcome::not_found> &&)>, std::tuple<std::variant<io_outcome::success, io_outcome::not_found> &&>, std::integer_sequence<unsigned long, 1> >::__visit_invoke' requested here | |
| { return _Array_type{&__visit_invoke}; } | |
| ^ | |
| /usr/local/bin/../lib/gcc/x86_64-pc-linux-gnu/7.0.1/../../../../include/c++/7.0.1/variant:659:53: note: in instantiation of member function 'std::__detail::__variant::__gen_vtable_impl<std::__detail::__variant::_Multi_array<int (*)(const scelta::overloader<(lambda at /home/jackie/code/scelta/example/error_handling.cpp:54:9), (lambda at /home/jackie/code/scelta/example/error_handling.cpp:55:9)> &, std::variant<io_outcome::success, io_outcome::not_found> &&)>, std::tuple<std::variant<io_outcome::success, io_outcome::not_found> &&>, std::integer_sequence<unsigned long, 1> >::_S_apply' requested here | |
| std::index_sequence<__indices..., __index>>::_S_apply(); | |
| ^ | |
| /usr/local/bin/../lib/gcc/x86_64-pc-linux-gnu/7.0.1/../../../../include/c++/7.0.1/variant:647:5: note: in instantiation of function template specialization 'std::__detail::__variant::__gen_vtable_impl<std::__detail::__variant::_Multi_array<int (*)(const scelta::overloader<(lambda at /home/jackie/code/scelta/example/error_handling.cpp:54:9), (lambda at /home/jackie/code/scelta/example/error_handling.cpp:55:9)> &, std::variant<io_outcome::success, io_outcome::not_found> &&), 2>, std::tuple<std::variant<io_outcome::success, io_outcome::not_found> &&>, std::integer_sequence<unsigned long> >::_S_apply_single_alt<1, std::__detail::__variant::_Multi_array<int (*)(const scelta::overloader<(lambda at /home/jackie/code/scelta/example/error_handling.cpp:54:9), (lambda at /home/jackie/code/scelta/example/error_handling.cpp:55:9)> &, std::variant<io_outcome::success, io_outcome::not_found> &&)> >' requested here | |
| (_S_apply_single_alt<__var_indices>( | |
| ^ | |
| /usr/local/bin/../lib/gcc/x86_64-pc-linux-gnu/7.0.1/../../../../include/c++/7.0.1/variant:637:2: note: (skipping 4 contexts in backtrace; use -ftemplate-backtrace-limit=0 to see all) | |
| _S_apply_all_alts( | |
| ^ | |
| /home/jackie/code/scelta/include/./scelta/./support/./variant/std.hpp:16:58: note: in instantiation of function template specialization 'std::visit<const scelta::overloader<(lambda at /home/jackie/code/scelta/example/error_handling.cpp:54:9), (lambda at /home/jackie/code/scelta/example/error_handling.cpp:55:9)> &, std::variant<io_outcome::success, io_outcome::not_found> >' requested here | |
| SCELTA_DEFINE_HOMOGENIZER_VARIANT(::std::variant, ::std::visit) | |
| ^ | |
| /home/jackie/code/scelta/include/./scelta/./support/./variant/../../utils/homogenizer.hpp:36:13: note: while substituting deduced template arguments into function template 'operator()' [with Ts = <const scelta::overloader<(lambda at /home/jackie/code/scelta/example/error_handling.cpp:54:9), (lambda at /home/jackie/code/scelta/example/error_handling.cpp:55:9)> &, std::variant<io_outcome::success, io_outcome::not_found>>] | |
| homogenizer_helper_t<std::decay_t<Variant>>{}( | |
| ^ | |
| /home/jackie/code/scelta/include/./scelta/./recursive/../visitation/./visit.hpp:21:13: note: while substituting deduced template arguments into function template 'visit_homogenizer' [with Visitor = const scelta::overloader<(lambda at /home/jackie/code/scelta/example/error_handling.cpp:54:9), (lambda at /home/jackie/code/scelta/example/error_handling.cpp:55:9)> &, Variant = std::variant<io_outcome::success, io_outcome::not_found>, Variants = <>] | |
| impl::visit_homogenizer( | |
| ^ | |
| /home/jackie/code/scelta/include/./scelta/./visitation/match.hpp:37:13: note: while substituting deduced template arguments into function template 'visit' [with Visitor = const scelta::overloader<(lambda at /home/jackie/code/scelta/example/error_handling.cpp:54:9), (lambda at /home/jackie/code/scelta/example/error_handling.cpp:55:9)> &, Variant = std::variant<io_outcome::success, io_outcome::not_found>, Variants = <>] | |
| DEFINE_BOUND_VISITOR_CALL(const Visitor&, const&) | |
| ^ | |
| /home/jackie/code/scelta/include/./scelta/./visitation/match.hpp:30:13: note: expanded from macro 'DEFINE_BOUND_VISITOR_CALL' | |
| visit(std::declval<m_visitor_type>(), FWD(variants)...) \ | |
| ^ | |
| /home/jackie/code/scelta/example/error_handling.cpp:56:9: note: while substituting deduced template arguments into function template 'operator()' [with Variants = <std::variant<io_outcome::success, io_outcome::not_found>>] | |
| (read_file(argv[1])); | |
| ^ | |
| /usr/local/bin/../lib/gcc/x86_64-pc-linux-gnu/7.0.1/../../../../include/c++/7.0.1/variant:906:7: note: constrained by private inheritance here | |
| : private __detail::__variant::_Variant_base<_Types...>, | |
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
| /usr/local/bin/../lib/gcc/x86_64-pc-linux-gnu/7.0.1/../../../../include/c++/7.0.1/variant:235:74: error: '_M_u' is a private member of 'std::__detail::__variant::_Variant_storage<false, io_outcome::success, io_outcome::not_found>' | |
| return __get(std::in_place_index<_Np>, std::forward<_Variant>(__v)._M_u); | |
| ^ | |
| /usr/local/bin/../lib/gcc/x86_64-pc-linux-gnu/7.0.1/../../../../include/c++/7.0.1/variant:906:7: note: constrained by private inheritance here | |
| : private __detail::__variant::_Variant_base<_Types...>, | |
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
| /usr/local/bin/../lib/gcc/x86_64-pc-linux-gnu/7.0.1/../../../../include/c++/7.0.1/variant:356:34: note: member is declared here | |
| _Variadic_union<_Types...> _M_u; | |
| ^ | |
| /usr/local/bin/../lib/gcc/x86_64-pc-linux-gnu/7.0.1/../../../../include/c++/7.0.1/variant:235:46: error: cannot cast 'std::variant<io_outcome::success, io_outcome::not_found>' to its private base class 'std::__detail::__variant::_Variant_storage<false, io_outcome::success, io_outcome::not_found>' | |
| return __get(std::in_place_index<_Np>, std::forward<_Variant>(__v)._M_u); | |
| ^ | |
| /usr/local/bin/../lib/gcc/x86_64-pc-linux-gnu/7.0.1/../../../../include/c++/7.0.1/variant:1233:35: note: in instantiation of function template specialization 'std::__detail::__variant::__get<0, std::variant<io_outcome::success, io_outcome::not_found> >' requested here | |
| return __detail::__variant::__get<_Np>(std::move(__v)); | |
| ^ | |
| /usr/local/bin/../lib/gcc/x86_64-pc-linux-gnu/7.0.1/../../../../include/c++/7.0.1/variant:676:9: note: in instantiation of function template specialization 'std::get<0, io_outcome::success, io_outcome::not_found>' requested here | |
| std::get<__indices>( | |
| ^ | |
| /usr/local/bin/../lib/gcc/x86_64-pc-linux-gnu/7.0.1/../../../../include/c++/7.0.1/variant:682:29: note: in instantiation of member function 'std::__detail::__variant::__gen_vtable_impl<std::__detail::__variant::_Multi_array<int (*)(const scelta::overloader<(lambda at /home/jackie/code/scelta/example/error_handling.cpp:54:9), (lambda at /home/jackie/code/scelta/example/error_handling.cpp:55:9)> &, std::variant<io_outcome::success, io_outcome::not_found> &&)>, std::tuple<std::variant<io_outcome::success, io_outcome::not_found> &&>, std::integer_sequence<unsigned long, 0> >::__visit_invoke' requested here | |
| { return _Array_type{&__visit_invoke}; } | |
| ^ | |
| /usr/local/bin/../lib/gcc/x86_64-pc-linux-gnu/7.0.1/../../../../include/c++/7.0.1/variant:659:53: note: in instantiation of member function 'std::__detail::__variant::__gen_vtable_impl<std::__detail::__variant::_Multi_array<int (*)(const scelta::overloader<(lambda at /home/jackie/code/scelta/example/error_handling.cpp:54:9), (lambda at /home/jackie/code/scelta/example/error_handling.cpp:55:9)> &, std::variant<io_outcome::success, io_outcome::not_found> &&)>, std::tuple<std::variant<io_outcome::success, io_outcome::not_found> &&>, std::integer_sequence<unsigned long, 0> >::_S_apply' requested here | |
| std::index_sequence<__indices..., __index>>::_S_apply(); | |
| ^ | |
| /usr/local/bin/../lib/gcc/x86_64-pc-linux-gnu/7.0.1/../../../../include/c++/7.0.1/variant:647:5: note: in instantiation of function template specialization 'std::__detail::__variant::__gen_vtable_impl<std::__detail::__variant::_Multi_array<int (*)(const scelta::overloader<(lambda at /home/jackie/code/scelta/example/error_handling.cpp:54:9), (lambda at /home/jackie/code/scelta/example/error_handling.cpp:55:9)> &, std::variant<io_outcome::success, io_outcome::not_found> &&), 2>, std::tuple<std::variant<io_outcome::success, io_outcome::not_found> &&>, std::integer_sequence<unsigned long> >::_S_apply_single_alt<0, std::__detail::__variant::_Multi_array<int (*)(const scelta::overloader<(lambda at /home/jackie/code/scelta/example/error_handling.cpp:54:9), (lambda at /home/jackie/code/scelta/example/error_handling.cpp:55:9)> &, std::variant<io_outcome::success, io_outcome::not_found> &&)> >' requested here | |
| (_S_apply_single_alt<__var_indices>( | |
| ^ | |
| /usr/local/bin/../lib/gcc/x86_64-pc-linux-gnu/7.0.1/../../../../include/c++/7.0.1/variant:637:2: note: (skipping 4 contexts in backtrace; use -ftemplate-backtrace-limit=0 to see all) | |
| _S_apply_all_alts( | |
| ^ | |
| /home/jackie/code/scelta/include/./scelta/./support/./variant/std.hpp:16:58: note: in instantiation of function template specialization 'std::visit<const scelta::overloader<(lambda at /home/jackie/code/scelta/example/error_handling.cpp:54:9), (lambda at /home/jackie/code/scelta/example/error_handling.cpp:55:9)> &, std::variant<io_outcome::success, io_outcome::not_found> >' requested here | |
| SCELTA_DEFINE_HOMOGENIZER_VARIANT(::std::variant, ::std::visit) | |
| ^ | |
| /home/jackie/code/scelta/include/./scelta/./support/./variant/../../utils/homogenizer.hpp:36:13: note: while substituting deduced template arguments into function template 'operator()' [with Ts = <const scelta::overloader<(lambda at /home/jackie/code/scelta/example/error_handling.cpp:54:9), (lambda at /home/jackie/code/scelta/example/error_handling.cpp:55:9)> &, std::variant<io_outcome::success, io_outcome::not_found>>] | |
| homogenizer_helper_t<std::decay_t<Variant>>{}( | |
| ^ | |
| /home/jackie/code/scelta/include/./scelta/./recursive/../visitation/./visit.hpp:21:13: note: while substituting deduced template arguments into function template 'visit_homogenizer' [with Visitor = const scelta::overloader<(lambda at /home/jackie/code/scelta/example/error_handling.cpp:54:9), (lambda at /home/jackie/code/scelta/example/error_handling.cpp:55:9)> &, Variant = std::variant<io_outcome::success, io_outcome::not_found>, Variants = <>] | |
| impl::visit_homogenizer( | |
| ^ | |
| /home/jackie/code/scelta/include/./scelta/./visitation/match.hpp:37:13: note: while substituting deduced template arguments into function template 'visit' [with Visitor = const scelta::overloader<(lambda at /home/jackie/code/scelta/example/error_handling.cpp:54:9), (lambda at /home/jackie/code/scelta/example/error_handling.cpp:55:9)> &, Variant = std::variant<io_outcome::success, io_outcome::not_found>, Variants = <>] | |
| DEFINE_BOUND_VISITOR_CALL(const Visitor&, const&) | |
| ^ | |
| /home/jackie/code/scelta/include/./scelta/./visitation/match.hpp:30:13: note: expanded from macro 'DEFINE_BOUND_VISITOR_CALL' | |
| visit(std::declval<m_visitor_type>(), FWD(variants)...) \ | |
| ^ | |
| /home/jackie/code/scelta/example/error_handling.cpp:56:9: note: while substituting deduced template arguments into function template 'operator()' [with Variants = <std::variant<io_outcome::success, io_outcome::not_found>>] | |
| (read_file(argv[1])); | |
| ^ | |
| /usr/local/bin/../lib/gcc/x86_64-pc-linux-gnu/7.0.1/../../../../include/c++/7.0.1/variant:906:7: note: constrained by private inheritance here | |
| : private __detail::__variant::_Variant_base<_Types...>, | |
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
| /usr/local/bin/../lib/gcc/x86_64-pc-linux-gnu/7.0.1/../../../../include/c++/7.0.1/variant:235:74: error: '_M_u' is a private member of 'std::__detail::__variant::_Variant_storage<false, io_outcome::success, io_outcome::not_found>' | |
| return __get(std::in_place_index<_Np>, std::forward<_Variant>(__v)._M_u); | |
| ^ | |
| /usr/local/bin/../lib/gcc/x86_64-pc-linux-gnu/7.0.1/../../../../include/c++/7.0.1/variant:906:7: note: constrained by private inheritance here | |
| : private __detail::__variant::_Variant_base<_Types...>, | |
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
| /usr/local/bin/../lib/gcc/x86_64-pc-linux-gnu/7.0.1/../../../../include/c++/7.0.1/variant:356:34: note: member is declared here | |
| _Variadic_union<_Types...> _M_u; | |
| ^ | |
| /usr/local/bin/../lib/gcc/x86_64-pc-linux-gnu/7.0.1/../../../../include/c++/7.0.1/variant:235:46: error: cannot cast 'const std::variant<io_outcome::success, io_outcome::not_found>' to its private base class 'std::__detail::__variant::_Variant_storage<false, io_outcome::success, io_outcome::not_found>' | |
| return __get(std::in_place_index<_Np>, std::forward<_Variant>(__v)._M_u); | |
| ^ | |
| /usr/local/bin/../lib/gcc/x86_64-pc-linux-gnu/7.0.1/../../../../include/c++/7.0.1/variant:1255:35: note: in instantiation of function template specialization 'std::__detail::__variant::__get<1, const std::variant<io_outcome::success, io_outcome::not_found> >' requested here | |
| return __detail::__variant::__get<_Np>(std::move(__v)); | |
| ^ | |
| /usr/local/bin/../lib/gcc/x86_64-pc-linux-gnu/7.0.1/../../../../include/c++/7.0.1/variant:676:9: note: in instantiation of function template specialization 'std::get<1, io_outcome::success, io_outcome::not_found>' requested here | |
| std::get<__indices>( | |
| ^ | |
| /usr/local/bin/../lib/gcc/x86_64-pc-linux-gnu/7.0.1/../../../../include/c++/7.0.1/variant:682:29: note: in instantiation of member function 'std::__detail::__variant::__gen_vtable_impl<std::__detail::__variant::_Multi_array<int (*)(scelta::overloader<(lambda at /home/jackie/code/scelta/example/error_handling.cpp:54:9), (lambda at /home/jackie/code/scelta/example/error_handling.cpp:55:9)> &&, std::variant<io_outcome::success, io_outcome::not_found> &&)>, std::tuple<std::variant<io_outcome::success, io_outcome::not_found> &&>, std::integer_sequence<unsigned long, 1> >::__visit_invoke' requested here | |
| { return _Array_type{&__visit_invoke}; } | |
| ^ | |
| /usr/local/bin/../lib/gcc/x86_64-pc-linux-gnu/7.0.1/../../../../include/c++/7.0.1/variant:659:53: note: in instantiation of member function 'std::__detail::__variant::__gen_vtable_impl<std::__detail::__variant::_Multi_array<int (*)(scelta::overloader<(lambda at /home/jackie/code/scelta/example/error_handling.cpp:54:9), (lambda at /home/jackie/code/scelta/example/error_handling.cpp:55:9)> &&, std::variant<io_outcome::success, io_outcome::not_found> &&)>, std::tuple<std::variant<io_outcome::success, io_outcome::not_found> &&>, std::integer_sequence<unsigned long, 1> >::_S_apply' requested here | |
| std::index_sequence<__indices..., __index>>::_S_apply(); | |
| ^ | |
| /usr/local/bin/../lib/gcc/x86_64-pc-linux-gnu/7.0.1/../../../../include/c++/7.0.1/variant:647:5: note: in instantiation of function template specialization 'std::__detail::__variant::__gen_vtable_impl<std::__detail::__variant::_Multi_array<int (*)(scelta::overloader<(lambda at /home/jackie/code/scelta/example/error_handling.cpp:54:9), (lambda at /home/jackie/code/scelta/example/error_handling.cpp:55:9)> &&, std::variant<io_outcome::success, io_outcome::not_found> &&), 2>, std::tuple<std::variant<io_outcome::success, io_outcome::not_found> &&>, std::integer_sequence<unsigned long> >::_S_apply_single_alt<1, std::__detail::__variant::_Multi_array<int (*)(scelta::overloader<(lambda at /home/jackie/code/scelta/example/error_handling.cpp:54:9), (lambda at /home/jackie/code/scelta/example/error_handling.cpp:55:9)> &&, std::variant<io_outcome::success, io_outcome::not_found> &&)> >' requested here | |
| (_S_apply_single_alt<__var_indices>( | |
| ^ | |
| /usr/local/bin/../lib/gcc/x86_64-pc-linux-gnu/7.0.1/../../../../include/c++/7.0.1/variant:637:2: note: (skipping 4 contexts in backtrace; use -ftemplate-backtrace-limit=0 to see all) | |
| _S_apply_all_alts( | |
| ^ | |
| /home/jackie/code/scelta/include/./scelta/./support/./variant/std.hpp:16:58: note: in instantiation of function template specialization 'std::visit<scelta::overloader<(lambda at /home/jackie/code/scelta/example/error_handling.cpp:54:9), (lambda at /home/jackie/code/scelta/example/error_handling.cpp:55:9)>, std::variant<io_outcome::success, io_outcome::not_found> >' requested here | |
| SCELTA_DEFINE_HOMOGENIZER_VARIANT(::std::variant, ::std::visit) | |
| ^ | |
| /home/jackie/code/scelta/include/./scelta/./support/./variant/../../utils/homogenizer.hpp:36:13: note: while substituting deduced template arguments into function template 'operator()' [with Ts = <scelta::overloader<(lambda at /home/jackie/code/scelta/example/error_handling.cpp:54:9), (lambda at /home/jackie/code/scelta/example/error_handling.cpp:55:9)>, std::variant<io_outcome::success, io_outcome::not_found>>] | |
| homogenizer_helper_t<std::decay_t<Variant>>{}( | |
| ^ | |
| /home/jackie/code/scelta/include/./scelta/./recursive/../visitation/./visit.hpp:21:13: note: while substituting deduced template arguments into function template 'visit_homogenizer' [with Visitor = scelta::overloader<(lambda at /home/jackie/code/scelta/example/error_handling.cpp:54:9), (lambda at /home/jackie/code/scelta/example/error_handling.cpp:55:9)>, Variant = std::variant<io_outcome::success, io_outcome::not_found>, Variants = <>] | |
| impl::visit_homogenizer( | |
| ^ | |
| /home/jackie/code/scelta/include/./scelta/./visitation/match.hpp:38:13: note: while substituting deduced template arguments into function template 'visit' [with Visitor = scelta::overloader<(lambda at /home/jackie/code/scelta/example/error_handling.cpp:54:9), (lambda at /home/jackie/code/scelta/example/error_handling.cpp:55:9)>, Variant = std::variant<io_outcome::success, io_outcome::not_found>, Variants = <>] | |
| DEFINE_BOUND_VISITOR_CALL(Visitor&&, &&) | |
| ^ | |
| /home/jackie/code/scelta/include/./scelta/./visitation/match.hpp:30:13: note: expanded from macro 'DEFINE_BOUND_VISITOR_CALL' | |
| visit(std::declval<m_visitor_type>(), FWD(variants)...) \ | |
| ^ | |
| /home/jackie/code/scelta/example/error_handling.cpp:56:9: note: while substituting deduced template arguments into function template 'operator()' [with Variants = <std::variant<io_outcome::success, io_outcome::not_found>>] | |
| (read_file(argv[1])); | |
| ^ | |
| /usr/local/bin/../lib/gcc/x86_64-pc-linux-gnu/7.0.1/../../../../include/c++/7.0.1/variant:906:7: note: constrained by private inheritance here | |
| : private __detail::__variant::_Variant_base<_Types...>, | |
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
| /usr/local/bin/../lib/gcc/x86_64-pc-linux-gnu/7.0.1/../../../../include/c++/7.0.1/variant:235:74: error: '_M_u' is a private member of 'std::__detail::__variant::_Variant_storage<false, io_outcome::success, io_outcome::not_found>' | |
| return __get(std::in_place_index<_Np>, std::forward<_Variant>(__v)._M_u); | |
| ^ | |
| /usr/local/bin/../lib/gcc/x86_64-pc-linux-gnu/7.0.1/../../../../include/c++/7.0.1/variant:906:7: note: constrained by private inheritance here | |
| : private __detail::__variant::_Variant_base<_Types...>, | |
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
| /usr/local/bin/../lib/gcc/x86_64-pc-linux-gnu/7.0.1/../../../../include/c++/7.0.1/variant:356:34: note: member is declared here | |
| _Variadic_union<_Types...> _M_u; | |
| ^ | |
| /usr/local/bin/../lib/gcc/x86_64-pc-linux-gnu/7.0.1/../../../../include/c++/7.0.1/variant:235:46: error: cannot cast 'const std::variant<io_outcome::success, io_outcome::not_found>' to its private base class 'std::__detail::__variant::_Variant_storage<false, io_outcome::success, io_outcome::not_found>' | |
| return __get(std::in_place_index<_Np>, std::forward<_Variant>(__v)._M_u); | |
| ^ | |
| /usr/local/bin/../lib/gcc/x86_64-pc-linux-gnu/7.0.1/../../../../include/c++/7.0.1/variant:1255:35: note: in instantiation of function template specialization 'std::__detail::__variant::__get<0, const std::variant<io_outcome::success, io_outcome::not_found> >' requested here | |
| return __detail::__variant::__get<_Np>(std::move(__v)); | |
| ^ | |
| /usr/local/bin/../lib/gcc/x86_64-pc-linux-gnu/7.0.1/../../../../include/c++/7.0.1/variant:676:9: note: in instantiation of function template specialization 'std::get<0, io_outcome::success, io_outcome::not_found>' requested here | |
| std::get<__indices>( | |
| ^ | |
| /usr/local/bin/../lib/gcc/x86_64-pc-linux-gnu/7.0.1/../../../../include/c++/7.0.1/variant:682:29: note: in instantiation of member function 'std::__detail::__variant::__gen_vtable_impl<std::__detail::__variant::_Multi_array<int (*)(scelta::overloader<(lambda at /home/jackie/code/scelta/example/error_handling.cpp:54:9), (lambda at /home/jackie/code/scelta/example/error_handling.cpp:55:9)> &&, std::variant<io_outcome::success, io_outcome::not_found> &&)>, std::tuple<std::variant<io_outcome::success, io_outcome::not_found> &&>, std::integer_sequence<unsigned long, 0> >::__visit_invoke' requested here | |
| { return _Array_type{&__visit_invoke}; } | |
| ^ | |
| /usr/local/bin/../lib/gcc/x86_64-pc-linux-gnu/7.0.1/../../../../include/c++/7.0.1/variant:659:53: note: in instantiation of member function 'std::__detail::__variant::__gen_vtable_impl<std::__detail::__variant::_Multi_array<int (*)(scelta::overloader<(lambda at /home/jackie/code/scelta/example/error_handling.cpp:54:9), (lambda at /home/jackie/code/scelta/example/error_handling.cpp:55:9)> &&, std::variant<io_outcome::success, io_outcome::not_found> &&)>, std::tuple<std::variant<io_outcome::success, io_outcome::not_found> &&>, std::integer_sequence<unsigned long, 0> >::_S_apply' requested here | |
| std::index_sequence<__indices..., __index>>::_S_apply(); | |
| ^ | |
| /usr/local/bin/../lib/gcc/x86_64-pc-linux-gnu/7.0.1/../../../../include/c++/7.0.1/variant:647:5: note: in instantiation of function template specialization 'std::__detail::__variant::__gen_vtable_impl<std::__detail::__variant::_Multi_array<int (*)(scelta::overloader<(lambda at /home/jackie/code/scelta/example/error_handling.cpp:54:9), (lambda at /home/jackie/code/scelta/example/error_handling.cpp:55:9)> &&, std::variant<io_outcome::success, io_outcome::not_found> &&), 2>, std::tuple<std::variant<io_outcome::success, io_outcome::not_found> &&>, std::integer_sequence<unsigned long> >::_S_apply_single_alt<0, std::__detail::__variant::_Multi_array<int (*)(scelta::overloader<(lambda at /home/jackie/code/scelta/example/error_handling.cpp:54:9), (lambda at /home/jackie/code/scelta/example/error_handling.cpp:55:9)> &&, std::variant<io_outcome::success, io_outcome::not_found> &&)> >' requested here | |
| (_S_apply_single_alt<__var_indices>( | |
| ^ | |
| /usr/local/bin/../lib/gcc/x86_64-pc-linux-gnu/7.0.1/../../../../include/c++/7.0.1/variant:637:2: note: (skipping 4 contexts in backtrace; use -ftemplate-backtrace-limit=0 to see all) | |
| _S_apply_all_alts( | |
| ^ | |
| /home/jackie/code/scelta/include/./scelta/./support/./variant/std.hpp:16:58: note: in instantiation of function template specialization 'std::visit<scelta::overloader<(lambda at /home/jackie/code/scelta/example/error_handling.cpp:54:9), (lambda at /home/jackie/code/scelta/example/error_handling.cpp:55:9)>, std::variant<io_outcome::success, io_outcome::not_found> >' requested here | |
| SCELTA_DEFINE_HOMOGENIZER_VARIANT(::std::variant, ::std::visit) | |
| ^ | |
| /home/jackie/code/scelta/include/./scelta/./support/./variant/../../utils/homogenizer.hpp:36:13: note: while substituting deduced template arguments into function template 'operator()' [with Ts = <scelta::overloader<(lambda at /home/jackie/code/scelta/example/error_handling.cpp:54:9), (lambda at /home/jackie/code/scelta/example/error_handling.cpp:55:9)>, std::variant<io_outcome::success, io_outcome::not_found>>] | |
| homogenizer_helper_t<std::decay_t<Variant>>{}( | |
| ^ | |
| /home/jackie/code/scelta/include/./scelta/./recursive/../visitation/./visit.hpp:21:13: note: while substituting deduced template arguments into function template 'visit_homogenizer' [with Visitor = scelta::overloader<(lambda at /home/jackie/code/scelta/example/error_handling.cpp:54:9), (lambda at /home/jackie/code/scelta/example/error_handling.cpp:55:9)>, Variant = std::variant<io_outcome::success, io_outcome::not_found>, Variants = <>] | |
| impl::visit_homogenizer( | |
| ^ | |
| /home/jackie/code/scelta/include/./scelta/./visitation/match.hpp:38:13: note: while substituting deduced template arguments into function template 'visit' [with Visitor = scelta::overloader<(lambda at /home/jackie/code/scelta/example/error_handling.cpp:54:9), (lambda at /home/jackie/code/scelta/example/error_handling.cpp:55:9)>, Variant = std::variant<io_outcome::success, io_outcome::not_found>, Variants = <>] | |
| DEFINE_BOUND_VISITOR_CALL(Visitor&&, &&) | |
| ^ | |
| /home/jackie/code/scelta/include/./scelta/./visitation/match.hpp:30:13: note: expanded from macro 'DEFINE_BOUND_VISITOR_CALL' | |
| visit(std::declval<m_visitor_type>(), FWD(variants)...) \ | |
| ^ | |
| /home/jackie/code/scelta/example/error_handling.cpp:56:9: note: while substituting deduced template arguments into function template 'operator()' [with Variants = <std::variant<io_outcome::success, io_outcome::not_found>>] | |
| (read_file(argv[1])); | |
| ^ | |
| /usr/local/bin/../lib/gcc/x86_64-pc-linux-gnu/7.0.1/../../../../include/c++/7.0.1/variant:906:7: note: constrained by private inheritance here | |
| : private __detail::__variant::_Variant_base<_Types...>, | |
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
| /usr/local/bin/../lib/gcc/x86_64-pc-linux-gnu/7.0.1/../../../../include/c++/7.0.1/variant:235:74: error: '_M_u' is a private member of 'std::__detail::__variant::_Variant_storage<false, io_outcome::success, io_outcome::not_found>' | |
| return __get(std::in_place_index<_Np>, std::forward<_Variant>(__v)._M_u); | |
| ^ | |
| /usr/local/bin/../lib/gcc/x86_64-pc-linux-gnu/7.0.1/../../../../include/c++/7.0.1/variant:906:7: note: constrained by private inheritance here | |
| : private __detail::__variant::_Variant_base<_Types...>, | |
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
| /usr/local/bin/../lib/gcc/x86_64-pc-linux-gnu/7.0.1/../../../../include/c++/7.0.1/variant:356:34: note: member is declared here | |
| _Variadic_union<_Types...> _M_u; | |
| ^ | |
| 8 errors generated. | |
| make[2]: *** [example/CMakeFiles/example_error_handling.dir/error_handling.cpp.o] Error 1 | |
| make[1]: *** [example/CMakeFiles/example_error_handling.dir/all] Error 2 | |
| make: *** [all] Error 2 |
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I got a similar error today with the libstdc++ version of std::variant when compiling with clang-SVN (gcc 7.1 works fine). I found the following LLVM bug report for it. FWIW, my example is too big for bug isolation, but it went away using Boost.Variant.