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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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| testsuite | ||
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| ChangeLog | ||
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| config.h.in | ||
| configure | ||
| configure.ac | ||
| configure.host | ||
| crossconfig.m4 | ||
| fragment.am | ||
| linkage.m4 | ||
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| Makefile.in | ||
| README | ||
file: libstdc++-v3/README New users may wish to point their web browsers to the file index.html in the 'doc/html' subdirectory. It contains brief building instructions and notes on how to configure the library in interesting ways.