5b417b3582
Clang has some bugs with destructors that use constraints to be conditionally trivial, so disable the P2231R1 constexpr changes to std::variant unless the compiler is GCC 12 or later. If/when P2493R0 gets accepted and implemented by G++ we can remove the __GNUC__ check and use __cpp_concepts >= 202002 instead. libstdc++-v3/ChangeLog: PR libstdc++/103891 * include/bits/c++config (_GLIBCXX_HAVE_COND_TRIVIAL_SPECIAL_MEMBERS): Define. * include/std/variant (__cpp_lib_variant): Only define C++20 value when the compiler is known to support conditionally trivial destructors. * include/std/version (__cpp_lib_variant): Likewise. |
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| c++tools | ||
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