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boostorg / hana

Your standard library for metaprogramming
http://boostorg.github.io/hana
Boost Software License 1.0
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std::aligned_storage and std::aligned_union deprecated in C++23 #519

Open ecatmur opened 11 months ago

ecatmur commented 11 months ago

https://godbolt.org/z/Yx16avdqP

/opt/compiler-explorer/libs/boost_1_82_0/boost/hana/traits.hpp: In member function 'constexpr auto boost::hana::traits::aligned_storage_t::operator()(const Len&, const Align&) const':
/opt/compiler-explorer/libs/boost_1_82_0/boost/hana/traits.hpp:173:42: warning: 'template<long unsigned int _Len, long unsigned int _Align> struct std::aligned_storage' is deprecated [-Wdeprecated-declarations]
  173 |             using Result = typename std::aligned_storage<len, align>::type;
      |                                          ^~~~~~~~~~~~~~~
In file included from /opt/compiler-explorer/libs/boost_1_82_0/boost/hana/core/default.hpp:17,
                 from /opt/compiler-explorer/libs/boost_1_82_0/boost/hana/concept/struct.hpp:17,
                 from /opt/compiler-explorer/libs/boost_1_82_0/boost/hana/accessors.hpp:15,
                 from /opt/compiler-explorer/libs/boost_1_82_0/boost/hana.hpp:58:
/opt/compiler-explorer/gcc-trunk-20230801/include/c++/14.0.0/type_traits:2099:5: note: declared here
 2099 |     aligned_storage
      |     ^~~~~~~~~~~~~~~
/opt/compiler-explorer/libs/boost_1_82_0/boost/hana/traits.hpp: In member function 'constexpr auto boost::hana::traits::aligned_storage_t::operator()(const Len&) const':
/opt/compiler-explorer/libs/boost_1_82_0/boost/hana/traits.hpp:180:42: warning: 'template<long unsigned int _Len, long unsigned int _Align> struct std::aligned_storage' is deprecated [-Wdeprecated-declarations]
  180 |             using Result = typename std::aligned_storage<len>::type;
      |                                          ^~~~~~~~~~~~~~~
/opt/compiler-explorer/gcc-trunk-20230801/include/c++/14.0.0/type_traits:2099:5: note: declared here
 2099 |     aligned_storage
      |     ^~~~~~~~~~~~~~~
/opt/compiler-explorer/libs/boost_1_82_0/boost/hana/traits.hpp: In member function 'constexpr auto boost::hana::traits::aligned_union_t::operator()(const Len&, const T& ...) const':
/opt/compiler-explorer/libs/boost_1_82_0/boost/hana/traits.hpp:189:42: warning: 'template<long unsigned int _Len, class ... _Types> struct std::aligned_union' is deprecated [-Wdeprecated-declarations]
  189 |             using Result = typename std::aligned_union<len, typename T::type...>::type;
      |                                          ^~~~~~~~~~~~~
/opt/compiler-explorer/gcc-trunk-20230801/include/c++/14.0.0/type_traits:2144:5: note: declared here
 2144 |     aligned_union
      |     ^~~~~~~~~~~~~