Arthur O'Dwyer 7b00e9fae3 [libc++] [P1065] Constexpr invoke, reference_wrapper, mem_fn, not_fn, default_searcher. ... This completes the implementation of P1065 "constexpr INVOKE": http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/p1065r2.html This doesn't yet complete the implementation of P1032 "Misc constexpr bits," http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p1032r1.html but it does complete all of the <functional> bits, which means that we can now set `__cpp_lib_constexpr_functional` for C++20. This could use more constexpr tests for `std::reference_wrapper<T>`, but the existing tests are extremely non-constexpr-friendly and so I don't want to get into that rabbit-hole today. Differential Revision: https://reviews.llvm.org/D93815		2020-12-28 13:24:07 -05:00
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not_fn.pass.cpp	[libc++] [P1065] Constexpr invoke, reference_wrapper, mem_fn, not_fn, default_searcher.	2020-12-28 13:24:07 -05:00