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clang-p2996/libcxx/docs/Status/Cxx2cPapers.csv
A. Jiang cae351f345 [libc++] Bump __cpp_lib_optional and __cpp_lib_variant (#113650) 
In C++20 mode, `__cpp_lib_optional` and `__cpp_lib_variant` should be
`202106L` due to DR P2231R1.

In C++26 mode, `__cpp_lib_variant` should be bumped to `202306L` due to
P2637R3.
- Clang 16/17 shouldn't get this bumping (as member `visit` requires
explicit object parameters), but it's very tricky to make the bumping
conditionally enabled. I _hope_ unconditionally bumping in C++26 will be
OK for LLVM 20 when the support for Clang 17 is dropped.

Related PRs:
- https://reviews.llvm.org/D102119
- #83335
- #76447
2024-10-26 07:38:52 +08:00

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"Paper #","Paper Name","Meeting","Status","First released version","Notes"
"`P2497R0 <https://wg21.link/P2497R0>`__","Testing for success or failure of ``<charconv>`` functions","2023-06 (Varna)","|Complete|","18.0",""
"`P2592R3 <https://wg21.link/P2592R3>`__","Hashing support for ``std::chrono`` value classes","2023-06 (Varna)","","",""
"`P2587R3 <https://wg21.link/P2587R3>`__","``to_string`` or not ``to_string``","2023-06 (Varna)","","",""
"`P2562R1 <https://wg21.link/P2562R1>`__","``constexpr`` Stable Sorting","2023-06 (Varna)","","",""
"`P2545R4 <https://wg21.link/P2545R4>`__","Read-Copy Update (RCU)","2023-06 (Varna)","","",""
"`P2530R3 <https://wg21.link/P2530R3>`__","Hazard Pointers for C++26","2023-06 (Varna)","","",""
"`P2538R1 <https://wg21.link/P2538R1>`__","ADL-proof ``std::projected``","2023-06 (Varna)","|Complete|","18.0",""
"`P2495R3 <https://wg21.link/P2495R3>`__","Interfacing ``stringstream``\s with ``string_view``","2023-06 (Varna)","|Complete|","19.0",""
"`P2510R3 <https://wg21.link/P2510R3>`__","Formatting pointers","2023-06 (Varna)","|Complete|","17.0","Implemented as a DR against C++20. (MSVC STL and libstdc++ will do the same.)"
"`P2198R7 <https://wg21.link/P2198R7>`__","Freestanding Feature-Test Macros and Implementation-Defined Extensions","2023-06 (Varna)","","",""
"`P2338R4 <https://wg21.link/P2338R4>`__","Freestanding Library: Character primitives and the C library","2023-06 (Varna)","","",""
"`P2013R5 <https://wg21.link/P2013R5>`__","Freestanding Language: Optional ``::operator new``","2023-06 (Varna)","","",""
"`P2363R5 <https://wg21.link/P2363R5>`__","Extending associative containers with the remaining heterogeneous overloads","2023-06 (Varna)","","",""
"`P1901R2 <https://wg21.link/P1901R2>`__","Enabling the Use of ``weak_ptr`` as Keys in Unordered Associative Containers","2023-06 (Varna)","","",""
"`P1885R12 <https://wg21.link/P1885R12>`__","Naming Text Encodings to Demystify Them","2023-06 (Varna)","","",""
"`P0792R14 <https://wg21.link/P0792R14>`__","``function_ref``: a type-erased callable reference","2023-06 (Varna)","","",""
"`P2874R2 <https://wg21.link/P2874R2>`__","Mandating Annex D Require No More","2023-06 (Varna)","","",""
"`P2757R3 <https://wg21.link/P2757R3>`__","Type-checking format args","2023-06 (Varna)","","",""
"`P2637R3 <https://wg21.link/P2637R3>`__","Member ``visit``","2023-06 (Varna)","|Complete|","19.0","Change of ``__cpp_lib_variant`` is completed in LLVM 20. Change of ``__cpp_lib_format`` is blocked by `P2419R2 <https://wg21.link/P2419R2>`__."
"`P2641R4 <https://wg21.link/P2641R4>`__","Checking if a ``union`` alternative is active","2023-06 (Varna)","","",""
"`P1759R6 <https://wg21.link/P1759R6>`__","Native handles and file streams","2023-06 (Varna)","|Complete|","18.0",""
"`P2697R1 <https://wg21.link/P2697R1>`__","Interfacing ``bitset`` with ``string_view``","2023-06 (Varna)","|Complete|","18.0",""
"`P1383R2 <https://wg21.link/P1383R2>`__","More ``constexpr`` for ``<cmath>`` and ``<complex>``","2023-06 (Varna)","","",""
"`P2734R0 <https://wg21.link/P2734R0>`__","Adding the new SI prefixes","2023-06 (Varna)","|Complete|","17.0",""
"`P2548R6 <https://wg21.link/P2548R6>`__","``copyable_function``","2023-06 (Varna)","","",""
"`P2714R1 <https://wg21.link/P2714R1>`__","Bind front and back to NTTP callables","2023-06 (Varna)","","",""
"`P2630R4 <https://wg21.link/P2630R4>`__","``submdspan``","2023-06 (Varna)","","",""
"","","","","",""
"`P0543R3 <https://wg21.link/P0543R3>`__","Saturation arithmetic","2023-11 (Kona)","|Complete|","18.0",""
"`P2407R5 <https://wg21.link/P2407R5>`__","Freestanding Library: Partial Classes","2023-11 (Kona)","","",""
"`P2546R5 <https://wg21.link/P2546R5>`__","Debugging Support","2023-11 (Kona)","","",""
"`P2905R2 <https://wg21.link/P2905R2>`__","Runtime format strings","2023-11 (Kona)","|Complete|","18.0",""
"`P2918R2 <https://wg21.link/P2918R2>`__","Runtime format strings II","2023-11 (Kona)","|Complete|","18.0",""
"`P2909R4 <https://wg21.link/P2909R4>`__","Fix formatting of code units as integers (Dude, where’s my ``char``?)","2023-11 (Kona)","|Complete|","18.0",""
"`P0952R2 <https://wg21.link/P0952R2>`__","A new specification for ``std::generate_canonical``","2023-11 (Kona)","","",""
"`P2447R6 <https://wg21.link/P2447R6>`__","``std::span`` over an initializer list","2023-11 (Kona)","|Complete|","18.0",""
"`P2821R5 <https://wg21.link/P2821R5>`__","``span.at()``","2023-11 (Kona)","|Complete|","18.0",""
"`P2868R3 <https://wg21.link/P2868R3>`__","Remove Deprecated ``std::allocator`` Typedef From C++26","2023-11 (Kona)","|Complete|","18.0",""
"`P2870R3 <https://wg21.link/P2870R3>`__","Remove ``basic_string::reserve()`` From C++26","2023-11 (Kona)","|Complete|","18.0",""
"`P2871R3 <https://wg21.link/P2871R3>`__","Remove Deprecated Unicode Conversion Facets from C++26","2023-11 (Kona)","|Complete|","18.0",""
"`P2819R2 <https://wg21.link/P2819R2>`__","Add tuple protocol to complex","2023-11 (Kona)","|Complete|","19.0",""
"`P2937R0 <https://wg21.link/P2937R0>`__","Freestanding: Remove ``strtok``","2023-11 (Kona)","","",""
"`P2833R2 <https://wg21.link/P2833R2>`__","Freestanding Library: inout expected span","2023-11 (Kona)","","",""
"`P2836R1 <https://wg21.link/P2836R1>`__","``std::basic_const_iterator`` should follow its underlying type's convertibility","2023-11 (Kona)","","",""
"`P2264R7 <https://wg21.link/P2264R7>`__","Make ``assert()`` macro user friendly for C and C++","2023-11 (Kona)","","",""
"`P1673R13 <https://wg21.link/P1673R13>`__","A free function linear algebra interface based on the BLAS","2023-11 (Kona)","","",""
"","","","","",""
"`P2875R4 <https://wg21.link/P2875R4>`__","Undeprecate ``polymorphic_allocator::destroy`` for C++26","2024-03 (Tokyo)","|Complete|","15.0",""
"`P2867R2 <https://wg21.link/P2867R2>`__","Remove Deprecated ``strstreams`` From C++26","2024-03 (Tokyo)","|Complete|","19.0",""
"`P2869R4 <https://wg21.link/P2869R4>`__","Remove Deprecated ``shared_ptr`` Atomic Access APIs from C++26","2024-03 (Tokyo)","","",""
"`P2872R3 <https://wg21.link/P2872R3>`__","Remove ``wstring_convert`` From C++26","2024-03 (Tokyo)","|Complete|","19.0",""
"`P3107R5 <https://wg21.link/P3107R5>`__","Permit an efficient implementation of ``std::print``","2024-03 (Tokyo)","","",""
"`P3142R0 <https://wg21.link/P3142R0>`__","Printing Blank Lines with ``println``","2024-03 (Tokyo)","|Complete|","19.0","Implemented as a DR against C++23. (MSVC STL and libstdc++ will do the same.)"
"`P2845R8 <https://wg21.link/P2845R8>`__","Formatting of ``std::filesystem::path``","2024-03 (Tokyo)","","",""
"`P0493R5 <https://wg21.link/P0493R5>`__","Atomic minimum/maximum","2024-03 (Tokyo)","","",""
"`P2542R8 <https://wg21.link/P2542R8>`__","``views::concat``","2024-03 (Tokyo)","","",""
"`P2591R5 <https://wg21.link/P2591R5>`__","Concatenation of strings and string views","2024-03 (Tokyo)","|Complete|","19.0",""
"`P2248R8 <https://wg21.link/P2248R8>`__","Enabling list-initialization for algorithms","2024-03 (Tokyo)","","",""
"`P2810R4 <https://wg21.link/P2810R4>`__","``is_debugger_present`` ``is_replaceable``","2024-03 (Tokyo)","","",""
"`P1068R11 <https://wg21.link/P1068R11>`__","Vector API for random number generation","2024-03 (Tokyo)","","",""
"`P2944R3 <https://wg21.link/P2944R3>`__","Comparisons for ``reference_wrapper``","2024-03 (Tokyo)","|Partial|","19.0","Implemented comparisons for ``reference_wrapper`` only"
"`P2642R6 <https://wg21.link/P2642R6>`__","Padded ``mdspan`` layouts","2024-03 (Tokyo)","","",""
"`P3029R1 <https://wg21.link/P3029R1>`__","Better ``mdspan``'s CTAD","2024-03 (Tokyo)","|Complete|","19.0",""
"","","","","",""
"`P2747R2 <https://wg21.link/P2747R2>`__","``constexpr`` placement new","2024-06 (St. Louis)","|Complete|","20.0",""
"`P2997R1 <https://wg21.link/P2997R1>`__","Removing the common reference requirement from the indirectly invocable concepts","2024-06 (St. Louis)","|Complete|","19.0","Implemented as a DR against C++20. (MSVC STL and libstdc++ will do the same.)"
"`P2389R2 <https://wg21.link/P2389R2>`__","``dextents`` Index Type Parameter","2024-06 (St. Louis)","|Complete|","19.0",""
"`P3168R2 <https://wg21.link/P3168R2>`__","Give ``std::optional`` Range Support","2024-06 (St. Louis)","","",""
"`P3217R0 <https://wg21.link/P3217R0>`__","Adjoints to 'Enabling list-initialization for algorithms': find_last","2024-06 (St. Louis)","","",""
"`P2985R0 <https://wg21.link/P2985R0>`__","A type trait for detecting virtual base classes","2024-06 (St. Louis)","|Complete|","20.0",""
"`P0843R14 <https://wg21.link/P0843R14>`__","``inplace_vector``","2024-06 (St. Louis)","","",""
"`P3235R3 <https://wg21.link/P3235R3>`__","``std::print`` more types faster with less memory","2024-06 (St. Louis)","","",""
"`P2968R2 <https://wg21.link/P2968R2>`__","Make ``std::ignore`` a first-class object","2024-06 (St. Louis)","|Complete|","19.0",""
"`P2075R6 <https://wg21.link/P2075R6>`__","Philox as an extension of the C++ RNG engines","2024-06 (St. Louis)","","",""
"`P2422R1 <https://wg21.link/P2422R1>`__","Remove ``nodiscard`` annotations from the standard library specification","2024-06 (St. Louis)","|Complete|","19.0","``nodiscard`` attributes were kept as a conforming extension"
"`P2300R10 <https://wg21.link/P2300R10>`__","``std::execution``","2024-06 (St. Louis)","","",""
"","","","","",""
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