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[libc++] Update status after the Kona meeting. (#72421)
This updates: - The status tables - Feature test macros (including previously missing ones) - New headers for modules
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‎libcxx/docs/FeatureTestMacroTable.rst

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--------------------------------------------------- -----------------
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``__cpp_lib_format`` *unimplemented*
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--------------------------------------------------- -----------------
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``__cpp_lib_format_uchar`` *unimplemented*
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--------------------------------------------------- -----------------
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``__cpp_lib_generic_unordered_lookup`` ``201811L``
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--------------------------------------------------- -----------------
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``__cpp_lib_int_pow2`` ``202002L``
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--------------------------------------------------- -----------------
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``__cpp_lib_print`` *unimplemented*
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--------------------------------------------------- -----------------
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``__cpp_lib_ranges_as_const`` *unimplemented*
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--------------------------------------------------- -----------------
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``__cpp_lib_ranges_as_rvalue`` ``202207L``
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--------------------------------------------------- -----------------
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``__cpp_lib_ranges_chunk`` *unimplemented*
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--------------------------------------------------- -----------------
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``__cpp_lib_to_underlying`` ``202102L``
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--------------------------------------------------- -----------------
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``__cpp_lib_tuple_like`` *unimplemented*
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--------------------------------------------------- -----------------
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``__cpp_lib_unreachable`` ``202202L``
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--------------------------------------------------- -----------------
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**C++ 26**
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--------------------------------------------------- -----------------
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``__cpp_lib_copyable_function`` *unimplemented*
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--------------------------------------------------- -----------------
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``__cpp_lib_debugging`` *unimplemented*
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--------------------------------------------------- -----------------
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``__cpp_lib_freestanding_algorithm`` *unimplemented*
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--------------------------------------------------- -----------------
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``__cpp_lib_freestanding_array`` *unimplemented*
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--------------------------------------------------- -----------------
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``__cpp_lib_freestanding_cstring`` *unimplemented*
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--------------------------------------------------- -----------------
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``__cpp_lib_freestanding_expected`` *unimplemented*
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--------------------------------------------------- -----------------
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``__cpp_lib_freestanding_mdspan`` *unimplemented*
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--------------------------------------------------- -----------------
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``__cpp_lib_freestanding_optional`` *unimplemented*
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--------------------------------------------------- -----------------
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``__cpp_lib_freestanding_string_view`` *unimplemented*
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--------------------------------------------------- -----------------
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``__cpp_lib_freestanding_variant`` *unimplemented*
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--------------------------------------------------- -----------------
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``__cpp_lib_fstream_native_handle`` *unimplemented*
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--------------------------------------------------- -----------------
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``__cpp_lib_function_ref`` *unimplemented*
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--------------------------------------------------- -----------------
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``__cpp_lib_hazard_pointer`` *unimplemented*
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--------------------------------------------------- -----------------
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``__cpp_lib_linalg`` *unimplemented*
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--------------------------------------------------- -----------------
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``__cpp_lib_out_ptr`` *unimplemented*
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--------------------------------------------------- -----------------
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``__cpp_lib_ratio`` ``202306L``
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``__cpp_lib_rcu`` *unimplemented*
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--------------------------------------------------- -----------------
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``__cpp_lib_saturation_arithmetic`` *unimplemented*
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--------------------------------------------------- -----------------
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``__cpp_lib_smart_ptr_owner_equality`` *unimplemented*
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--------------------------------------------------- -----------------
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``__cpp_lib_span_initializer_list`` *unimplemented*
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--------------------------------------------------- -----------------
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``__cpp_lib_sstream_from_string_view`` *unimplemented*
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--------------------------------------------------- -----------------
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``__cpp_lib_submdspan`` *unimplemented*
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--------------------------------------------------- -----------------
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``__cpp_lib_to_chars`` *unimplemented*
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--------------------------------------------------- -----------------
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``__cpp_lib_tuple_like`` *unimplemented*
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--------------------------------------------------- -----------------
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``__cpp_lib_within_lifetime`` *unimplemented*
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=================================================== =================
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‎libcxx/docs/Helpers/Styles.rst

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.spaceship { background-color: #B0E0E6; }
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.fc { background-color: #8EAF63; white-space:nowrap; }
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.concurrency { background-color: #909090; white-space:nowrap; }
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.dr { background-color: #FFFF99; }
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</style>
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.. role:: notstarted
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.. role:: spaceship
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.. role:: fc
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.. role:: concurrency
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.. role:: dr
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.. |chrono| replace:: :chrono:`chrono`
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.. |format| replace:: :format:`format`
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.. |ranges| replace:: :ranges:`ranges`
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.. |spaceship| replace:: :spaceship:`spaceship`
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.. |flat_containers| replace:: :fc:`flat containers`
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.. |concurrency TS| replace:: :concurrency:`concurrency TS`
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.. |DR| replace:: :dr:`Defect Report`
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.. |sect| unicode:: U+00A7
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.. |hellip| unicode:: U+2026

‎libcxx/docs/Status/Cxx2cIssues.csv

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"`3938 <https://wg21.link/LWG3938>`__","Cannot use ``std::expected`` monadic ops with move-only ``error_type``","Varna June 2023","|Complete|","18.0",""
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"`3940 <https://wg21.link/LWG3940>`__","``std::expected<void, E>::value()`` also needs ``E`` to be copy constructible","Varna June 2023","","",""
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"","","","","",""
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"`2392 <https://wg21.link/LWG2392>`__","""character type"" is used but not defined","Kona November 2023","","",""
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"`3203 <https://wg21.link/LWG3203>`__","``span`` element access invalidation","Kona November 2023","","",""
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"`3305 <https://wg21.link/LWG3305>`__","``any_cast<void>``","Kona November 2023","","",""
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"`3431 <https://wg21.link/LWG3431>`__","``<=>`` for containers should require ``three_way_comparable<T>`` instead of ``<=>``","Kona November 2023","","",""
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"`3749 <https://wg21.link/LWG3749>`__","``common_iterator`` should handle integer-class difference types","Kona November 2023","","",""
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"`3809 <https://wg21.link/LWG3809>`__","Is ``std::subtract_with_carry_engine<uint16_t>`` supposed to work","Kona November 2023","","",""
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"`3892 <https://wg21.link/LWG3892>`__","Incorrect formatting of nested ranges and tuples","Kona November 2023","|Complete|","17.0","|format|"
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"`3897 <https://wg21.link/LWG3897>`__","``inout_ptr`` will not update raw pointer to 0","Kona November 2023","","",""
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"`3946 <https://wg21.link/LWG3946>`__","The definition of ``const_iterator_t`` should be reworked","Kona November 2023","","",""
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"`3947 <https://wg21.link/LWG3947>`__","Unexpected constraints on ``adjacent_transform_view::base()``","Kona November 2023","","","|ranges|"
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"`3948 <https://wg21.link/LWG3948>`__","``possibly-const-range and as-const-pointer`` should be ``noexcept``","Kona November 2023","","","|ranges|"
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"`3949 <https://wg21.link/LWG3949>`__","``std::atomic<bool>``'s trivial destructor dropped in C++17 spec wording","Kona November 2023","","",""
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"`3951 <https://wg21.link/LWG3951>`__","[expected.object.swap]: Using ``value()`` instead of ``has_value()``","Kona November 2023","","",""
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"`3953 <https://wg21.link/LWG3953>`__","``iter_move`` for ``common_iterator`` and ``counted_iterator`` should return ``decltype(auto)``","Kona November 2023","","","|ranges|"
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"`3957 <https://wg21.link/LWG3957>`__","[container.alloc.reqmts] The value category of v should be claimed","Kona November 2023","","",""
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"`3965 <https://wg21.link/LWG3965>`__","Incorrect example in [format.string.escaped] p3 for formatting of combining characters","Kona November 2023","","","|format|"
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"`3970 <https://wg21.link/LWG3970>`__","[mdspan.syn] Missing definition of ``full_extent_t`` and ``full_extent``","Kona November 2023","","",""
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"`3973 <https://wg21.link/LWG3973>`__","Monadic operations should be ADL-proof","Kona November 2023","","",""
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"`3974 <https://wg21.link/LWG3974>`__","``mdspan::operator[]`` should not copy ``OtherIndexTypes``","Kona November 2023","","",""
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"`3987 <https://wg21.link/LWG3987>`__","Including ``<flat_foo>`` doesn't provide ``std::begin``/``end``","Kona November 2023","","","|flat_containers|"
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"`3990 <https://wg21.link/LWG3990>`__","Program-defined specializations of ``std::tuple`` and ``std::variant`` can't be properly supported","Kona November 2023","","",""
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"`4001 <https://wg21.link/LWG4001>`__","``iota_view`` should provide ``empty``","Kona November 2023","","","|ranges|"
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"`3343 <https://wg21.link/LWG3343>`__","Ordering of calls to ``unlock()`` and ``notify_all()`` in Effects element of ``notify_all_at_thread_exit()`` should be reversed","Not Yet Adopted","|Complete|","16.0",""
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"`3892 <https://wg21.link/LWG3892>`__","Incorrect formatting of nested ranges and tuples","Not Yet Adopted","|Complete|","17.0","|format|"
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‎libcxx/docs/Status/Cxx2cPapers.csv

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"`P2714R1 <https://wg21.link/P2714R1>`__","LWG","Bind front and back to NTTP callables","Varna June 2023","","",""
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"`P2630R4 <https://wg21.link/P2630R4>`__","LWG","``submdspan``","Varna June 2023","","",""
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"","","","","","",""
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"`P0543R3 <https://wg21.link/P0543R3>`__","LWG","Saturation arithmetic","Kona November 2023","","",""
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"`P2407R5 <https://wg21.link/P2407R5>`__","LWG","Freestanding Library: Partial Classes","Kona November 2023","","",""
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"`P2546R5 <https://wg21.link/P2546R5>`__","LWG","Debugging Support","Kona November 2023","","",""
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"`P2905R2 <https://wg21.link/P2905R2>`__","LWG","Runtime format strings","Kona November 2023","","","|format| |DR|"
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"`P2918R2 <https://wg21.link/P2918R2>`__","LWG","Runtime format strings II","Kona November 2023","","","|format|"
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"`P2909R4 <https://wg21.link/P2909R4>`__","LWG","Fix formatting of code units as integers (Dude, where’s my ``char``?)","Kona November 2023","","","|format| |DR|"
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"`P0952R2 <https://wg21.link/P0952R2>`__","LWG","A new specification for ``std::generate_canonical``","Kona November 2023","","",""
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"`P2447R6 <https://wg21.link/P2447R6>`__","LWG","``std::span`` over an initializer list","Kona November 2023","","",""
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"`P2821R5 <https://wg21.link/P2821R5>`__","LWG","``span.at()``","Kona November 2023","","",""
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"`P2868R3 <https://wg21.link/P2868R3>`__","LWG","Remove Deprecated ``std::allocator`` Typedef From C++26","Kona November 2023","","",""
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"`P2870R3 <https://wg21.link/P2870R3>`__","LWG","Remove ``basic_string::reserve()`` From C++26","Kona November 2023","","",""
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"`P2871R3 <https://wg21.link/P2871R3>`__","LWG","Remove Deprecated Unicode Conversion Facets from C++26","Kona November 2023","","",""
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"`P2819R2 <https://wg21.link/P2819R2>`__","LWG","Add tuple protocol to complex","Kona November 2023","","",""
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"`P2937R0 <https://wg21.link/P2937R0>`__","LWG","Freestanding: Remove ``strtok``","Kona November 2023","","",""
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"`P2833R2 <https://wg21.link/P2833R2>`__","LWG","Freestanding Library: inout expected span","Kona November 2023","","",""
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"`P2836R1 <https://wg21.link/P2836R1>`__","LWG","``std::basic_const_iterator`` should follow its underlying type's convertibility","Kona November 2023","","","|DR|"
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"`P2264R7 <https://wg21.link/P2264R7>`__","LWG","Make ``assert()`` macro user friendly for C and C++","Kona November 2023","","",""
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"`P1673R13 <https://wg21.link/P1673R13>`__","LWG","A free function linear algebra interface based on the BLAS","Kona November 2023","","",""
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