docs/Status/Cxx20Issues.csv

"Issue #","Issue Name","Meeting","Status","First released version","Labels"
"`2070 <https://wg21.link/LWG2070>`__","``allocate_shared``\  should use ``allocator_traits<A>::construct``\ ","Toronto","Resolved by `P0674R1 <https://wg21.link/P0674R1>`__",""
"`2444 <https://wg21.link/LWG2444>`__","Inconsistent complexity for ``std::sort_heap``\ ","Toronto","",""
"`2593 <https://wg21.link/LWG2593>`__","Moved-from state of Allocators","Toronto","",""
"`2597 <https://wg21.link/LWG2597>`__","``std::log``\  misspecified for complex numbers","Toronto","",""
"`2783 <https://wg21.link/LWG2783>`__","``stack::emplace()``\  and ``queue::emplace()``\  should return ``decltype(auto)``\ ","Toronto","|Complete|",""
"`2932 <https://wg21.link/LWG2932>`__","Constraints on parallel algorithm implementations are underspecified","Toronto","",""
"`2937 <https://wg21.link/LWG2937>`__","Is ``equivalent(""existing_thing"", ""not_existing_thing"")``\  an error","Toronto","|Complete|",""
"`2940 <https://wg21.link/LWG2940>`__","``result_of``\  specification also needs a little cleanup","Toronto","",""
"`2942 <https://wg21.link/LWG2942>`__","LWG 2873's resolution missed ``weak_ptr::owner_before``\ ","Toronto","|Complete|",""
"`2954 <https://wg21.link/LWG2954>`__","Specialization of the convenience variable templates should be prohibited","Toronto","|Complete|",""
"`2961 <https://wg21.link/LWG2961>`__","Bad postcondition for ``set_default_resource``\ ","Toronto","",""
"`2966 <https://wg21.link/LWG2966>`__","Incomplete resolution of US 74","Toronto","|Nothing To Do|",""
"`2974 <https://wg21.link/LWG2974>`__","Diagnose out of bounds ``tuple_element/variant_alternative``\ ","Toronto","|Complete|",""
"","","","",""
"`2779 <https://wg21.link/LWG2779>`__","[networking.ts] Relax requirements on buffer sequence iterators","Albuquerque","",""
"`2870 <https://wg21.link/LWG2870>`__","Default value of parameter theta of polar should be dependent","Albuquerque","|Complete|",""
"`2935 <https://wg21.link/LWG2935>`__","What should create_directories do when p already exists but is not a directory?","Albuquerque","|Nothing To Do|",""
"`2941 <https://wg21.link/LWG2941>`__","[thread.req.timing] wording should apply to both member and namespace-level functions","Albuquerque","|Nothing To Do|",""
"`2944 <https://wg21.link/LWG2944>`__","LWG 2905 accidentally removed requirement that construction of the deleter doesn't throw an exception","Albuquerque","|Nothing To Do|",""
"`2945 <https://wg21.link/LWG2945>`__","Order of template parameters in optional comparisons","Albuquerque","|Complete|",""
"`2948 <https://wg21.link/LWG2948>`__","unique_ptr does not define operator<< for stream output","Albuquerque","|Complete|",""
"`2950 <https://wg21.link/LWG2950>`__","std::byte operations are misspecified","Albuquerque","|Complete|",""
"`2952 <https://wg21.link/LWG2952>`__","iterator_traits should work for pointers to cv T","Albuquerque","|Complete|",""
"`2953 <https://wg21.link/LWG2953>`__","LWG 2853 should apply to deque::erase too","Albuquerque","|Complete|",""
"`2958 <https://wg21.link/LWG2958>`__","Moves improperly defined as deleted","Albuquerque","|Complete|",""
"`2964 <https://wg21.link/LWG2964>`__","Apparently redundant requirement for dynamic_pointer_cast","Albuquerque","",""
"`2965 <https://wg21.link/LWG2965>`__","Non-existing path::native_string() in filesystem_error::what() specification","Albuquerque","|Nothing To Do|",""
"`2972 <https://wg21.link/LWG2972>`__","What is ``is_trivially_destructible_v<int>``\ ?","Albuquerque","|Complete|",""
"`2976 <https://wg21.link/LWG2976>`__","Dangling uses_allocator specialization for packaged_task","Albuquerque","|Complete|",""
"`2977 <https://wg21.link/LWG2977>`__","unordered_meow::merge() has incorrect Throws: clause","Albuquerque","|Nothing To Do|",""
"`2978 <https://wg21.link/LWG2978>`__","Hash support for pmr::string and friends","Albuquerque","",""
"`2979 <https://wg21.link/LWG2979>`__","aligned_union should require complete object types","Albuquerque","|Complete|",""
"`2980 <https://wg21.link/LWG2980>`__","Cannot compare_exchange empty pointers","Albuquerque","",""
"`2981 <https://wg21.link/LWG2981>`__","Remove redundant deduction guides from standard library","Albuquerque","|Nothing To Do|",""
"`2982 <https://wg21.link/LWG2982>`__","Making size_type consistent in associative container deduction guides","Albuquerque","",""
"`2988 <https://wg21.link/LWG2988>`__","Clause 32 cleanup missed one typename","Albuquerque","|Complete|","13.0"
"`2993 <https://wg21.link/LWG2993>`__","reference_wrapper<T> conversion from T&&","Albuquerque","|Complete|","13.0"
"`2998 <https://wg21.link/LWG2998>`__","Requirements on function objects passed to {``forward_``,}list-specific algorithms","Albuquerque","|Nothing To Do|",""
"`3001 <https://wg21.link/LWG3001>`__","weak_ptr::element_type needs remove_extent_t","Albuquerque","|Complete|","14.0"
"`3024 <https://wg21.link/LWG3024>`__","variant's copies must be deleted instead of disabled via SFINAE","Albuquerque","|Complete|",""
"","","","",""
"`2164 <https://wg21.link/LWG2164>`__","What are the semantics of ``vector.emplace(vector.begin(), vector.back())``\ ?","Jacksonville","|Complete|",""
"`2243 <https://wg21.link/LWG2243>`__","``istream::putback``\  problem","Jacksonville","|Complete|",""
"`2816 <https://wg21.link/LWG2816>`__","``resize_file``\  has impossible postcondition","Jacksonville","|Nothing To Do|",""
"`2843 <https://wg21.link/LWG2843>`__","Unclear behavior of ``std::pmr::memory_resource::do_allocate()``\ ","Jacksonville","|Complete|",""
"`2849 <https://wg21.link/LWG2849>`__","Why does ``!is_regular_file(from)``\  cause ``copy_file``\  to report a ""file already exists"" error?","Jacksonville","|Nothing To Do|",""
"`2851 <https://wg21.link/LWG2851>`__","``std::filesystem``\  enum classes are now underspecified","Jacksonville","|Nothing To Do|",""
"`2946 <https://wg21.link/LWG2946>`__","LWG 2758's resolution missed further corrections","Jacksonville","|Complete|",""
"`2969 <https://wg21.link/LWG2969>`__","``polymorphic_allocator::construct()``\  shouldn't pass ``resource()``\ ","Jacksonville","|Complete|",""
"`2975 <https://wg21.link/LWG2975>`__","Missing case for ``pair``\  construction in scoped and polymorphic allocators","Jacksonville","",""
"`2989 <https://wg21.link/LWG2989>`__","``path``\ 's stream insertion operator lets you insert everything under the sun","Jacksonville","|Complete|",""
"`3000 <https://wg21.link/LWG3000>`__","``monotonic_memory_resource::do_is_equal``\  uses ``dynamic_cast``\  unnecessarily","Jacksonville","",""
"`3002 <https://wg21.link/LWG3002>`__","[networking.ts] ``basic_socket_acceptor::is_open()``\  isn't ``noexcept``\ ","Jacksonville","",""
"`3004 <https://wg21.link/LWG3004>`__","|sect|\ [string.capacity] and |sect|\ [vector.capacity] should specify time complexity for ``capacity()``\ ","Jacksonville","|Nothing To Do|",""
"`3005 <https://wg21.link/LWG3005>`__","Destruction order of arrays by ``make_shared/allocate_shared``\  only recommended?","Jacksonville","",""
"`3007 <https://wg21.link/LWG3007>`__","``allocate_shared``\  should rebind allocator to *cv*-unqualified ``value_type``\  for construction","Jacksonville","",""
"`3009 <https://wg21.link/LWG3009>`__","Including ``<string_view>``\  doesn't provide ``std::size/empty/data``\ ","Jacksonville","|Complete|",""
"`3010 <https://wg21.link/LWG3010>`__","[networking.ts] ``uses_executor``\  says ""if a type ``T::executor_type``\  exists""","Jacksonville","",""
"`3013 <https://wg21.link/LWG3013>`__","``(recursive_)directory_iterator``\  construction and traversal should not be ``noexcept``\ ","Jacksonville","|Complete|",""
"`3014 <https://wg21.link/LWG3014>`__","More ``noexcept``\  issues with filesystem operations","Jacksonville","|Complete|",""
"`3015 <https://wg21.link/LWG3015>`__","``copy_options::*unspecified*``\  underspecified","Jacksonville","|Nothing To Do|",""
"`3017 <https://wg21.link/LWG3017>`__","``list splice``\  functions should use ``addressof``\ ","Jacksonville","|Complete|",""
"`3020 <https://wg21.link/LWG3020>`__","[networking.ts] Remove spurious nested ``value_type``\  buffer sequence requirement","Jacksonville","",""
"`3026 <https://wg21.link/LWG3026>`__","``filesystem::weakly_canonical``\  still defined in terms of ``canonical(p, base)``\ ","Jacksonville","|Complete|",""
"`3030 <https://wg21.link/LWG3030>`__","Who shall meet the requirements of ``try_lock``\ ?","Jacksonville","|Nothing To Do|",""
"`3034 <https://wg21.link/LWG3034>`__","P0767R1 breaks previously-standard-layout types","Jacksonville","|Complete|",""
"`3035 <https://wg21.link/LWG3035>`__","``std::allocator``\ 's constructors should be ``constexpr``\ ","Jacksonville","|Complete|",""
"`3039 <https://wg21.link/LWG3039>`__","Unnecessary ``decay``\  in ``thread``\  and ``packaged_task``\ ","Jacksonville","|Complete|",""
"`3041 <https://wg21.link/LWG3041>`__","Unnecessary ``decay``\  in ``reference_wrapper``\ ","Jacksonville","|Complete|",""
"`3042 <https://wg21.link/LWG3042>`__","``is_literal_type_v``\  should be inline","Jacksonville","|Complete|",""
"`3043 <https://wg21.link/LWG3043>`__","Bogus postcondition for ``filesystem_error``\  constructor","Jacksonville","|Complete|",""
"`3045 <https://wg21.link/LWG3045>`__","``atomic<floating-point>``\  doesn't have ``value_type``\  or ``difference_type``\ ","Jacksonville","",""
"`3048 <https://wg21.link/LWG3048>`__","``transform_reduce(exec, first1, last1, first2, init)``\  discards execution policy","Jacksonville","",""
"`3051 <https://wg21.link/LWG3051>`__","Floating point classifications were inadvertently changed in P0175","Jacksonville","|Nothing To Do|",""
"`3075 <https://wg21.link/LWG3075>`__","``basic_string``\  needs deduction guides from ``basic_string_view``\ ","Jacksonville","|Complete|",""
"","","","",""
"`2139 <https://wg21.link/LWG2139>`__","What is a user-defined type?","Rapperswil","",""
"`2970 <https://wg21.link/LWG2970>`__","Return type of std::visit misspecified","Rapperswil","",""
"`3058 <https://wg21.link/LWG3058>`__","Parallel adjacent_difference shouldn't require creating temporaries","Rapperswil","",""
"`3062 <https://wg21.link/LWG3062>`__","Unnecessary decay_t in is_execution_policy_v should be remove_cvref_t","Rapperswil","",""
"`3067 <https://wg21.link/LWG3067>`__","recursive_directory_iterator::pop must invalidate","Rapperswil","|Nothing To Do|",""
"`3071 <https://wg21.link/LWG3071>`__","[networking.ts] read_until still refers to ""input sequence""","Rapperswil","|Nothing To Do|",""
"`3074 <https://wg21.link/LWG3074>`__","Non-member functions for valarray should only deduce from the valarray","Rapperswil","",""
"`3076 <https://wg21.link/LWG3076>`__","basic_string CTAD ambiguity","Rapperswil","|Complete|",""
"`3079 <https://wg21.link/LWG3079>`__","LWG 2935 forgot to fix the existing_p overloads of create_directory","Rapperswil","|Nothing To Do|",""
"`3080 <https://wg21.link/LWG3080>`__","Floating point from_chars pattern specification breaks round-tripping","Rapperswil","",""
"`3083 <https://wg21.link/LWG3083>`__","What should ios::iword(-1) do?","Rapperswil","|Nothing To Do|",""
"`3094 <https://wg21.link/LWG3094>`__","[time.duration.io]p4 makes surprising claims about encoding","Rapperswil","",""
"`3100 <https://wg21.link/LWG3100>`__","Unnecessary and confusing ""empty span"" wording","Rapperswil","|Nothing To Do|",""
"`3102 <https://wg21.link/LWG3102>`__","Clarify span iterator and ``const_iterator`` behavior","Rapperswil","|Complete|",""
"`3104 <https://wg21.link/LWG3104>`__","Fixing duration division","Rapperswil","|Complete|",""
"","","","",""
"`2183 <https://wg21.link/LWG2183>`__","Muddled allocator requirements for ``match_results``\  constructors","San Diego","|Complete|",""
"`2184 <https://wg21.link/LWG2184>`__","Muddled allocator requirements for ``match_results``\  assignments","San Diego","|Complete|",""
"`2412 <https://wg21.link/LWG2412>`__","``promise::set_value()``\  and ``promise::get_future()``\  should not race","San Diego","",""
"`2499 <https://wg21.link/LWG2499>`__","``operator>>(basic_istream&, CharT*)``\  makes it hard to avoid buffer overflows","San Diego","Resolved by P0487R1",""
"`2682 <https://wg21.link/LWG2682>`__","``filesystem::copy()``\  won't create a symlink to a directory","San Diego","|Nothing To Do|",""
"`2697 <https://wg21.link/LWG2697>`__","[concurr.ts] Behavior of ``future/shared_future``\  unwrapping constructor when given an invalid ``future``\ ","San Diego","",""
"`2797 <https://wg21.link/LWG2797>`__","Trait precondition violations","San Diego","Resolved by 1285R0",""
"`2936 <https://wg21.link/LWG2936>`__","Path comparison is defined in terms of the generic format","San Diego","|Complete|",""
"`2943 <https://wg21.link/LWG2943>`__","Problematic specification of the wide version of ``basic_filebuf::open``\ ","San Diego","|Nothing To Do|",""
"`2960 <https://wg21.link/LWG2960>`__","[fund.ts.v3] ``nonesuch``\  is insufficiently useless","San Diego","|Complete|",""
"`2995 <https://wg21.link/LWG2995>`__","``basic_stringbuf``\  default constructor forbids it from using SSO capacity","San Diego","",""
"`2996 <https://wg21.link/LWG2996>`__","Missing rvalue overloads for ``shared_ptr``\  operations","San Diego","",""
"`3008 <https://wg21.link/LWG3008>`__","``make_shared``\  (sub)object destruction semantics are not specified","San Diego","",""
"`3022 <https://wg21.link/LWG3022>`__","``is_convertible<derived*, base*>``\  may lead to ODR","San Diego","Resolved by 1285R0",""
"`3025 <https://wg21.link/LWG3025>`__","Map-like container deduction guides should use ``pair<Key, T>``\ , not ``pair<const Key, T>``\ ","San Diego","|Complete|",""
"`3031 <https://wg21.link/LWG3031>`__","Algorithms and predicates with non-const reference arguments","San Diego","",""
"`3037 <https://wg21.link/LWG3037>`__","``polymorphic_allocator``\  and incomplete types","San Diego","",""
"`3038 <https://wg21.link/LWG3038>`__","``polymorphic_allocator::allocate``\  should not allow integer overflow to create vulnerabilities","San Diego","|Complete|","14.0"
"`3054 <https://wg21.link/LWG3054>`__","``uninitialized_copy``\  appears to not be able to meet its exception-safety guarantee","San Diego","",""
"`3065 <https://wg21.link/LWG3065>`__","LWG 2989 missed that all ``path``\ 's other operators should be hidden friends as well","San Diego","|Complete|",""
"`3096 <https://wg21.link/LWG3096>`__","``path::lexically_relative``\  is confused by trailing slashes","San Diego","|Complete|",""
"`3116 <https://wg21.link/LWG3116>`__","``OUTERMOST_ALLOC_TRAITS``\  needs ``remove_reference_t``\ ","San Diego","",""
"`3122 <https://wg21.link/LWG3122>`__","``__cpp_lib_chrono_udls``\  was accidentally dropped","San Diego","|Complete|",""
"`3127 <https://wg21.link/LWG3127>`__","``basic_osyncstream::rdbuf``\  needs a ``const_cast``\ ","San Diego","",""
"`3128 <https://wg21.link/LWG3128>`__","``strstream::rdbuf``\  needs a ``const_cast``\ ","San Diego","|Nothing To Do|",""
"`3129 <https://wg21.link/LWG3129>`__","``regex_token_iterator``\  constructor uses wrong pointer arithmetic","San Diego","",""
"`3130 <https://wg21.link/LWG3130>`__","|sect|\ [input.output] needs many ``addressof``\ ","San Diego","",""
"`3131 <https://wg21.link/LWG3131>`__","``addressof``\  all the things","San Diego","",""
"`3132 <https://wg21.link/LWG3132>`__","Library needs to ban macros named ``expects``\  or ``ensures``\ ","San Diego","|Nothing To Do|",""
"`3134 <https://wg21.link/LWG3134>`__","[fund.ts.v3] LFTSv3 contains extraneous [meta] variable templates that should have been deleted by P09961","San Diego","Resolved by P1210R0",""
"`3137 <https://wg21.link/LWG3137>`__","Header for ``__cpp_lib_to_chars``\ ","San Diego","|Complete|",""
"`3145 <https://wg21.link/LWG3145>`__","``file_clock``\  breaks ABI for C++17 implementations","San Diego","|Complete|",""
"`3147 <https://wg21.link/LWG3147>`__","Definitions of ""likely"" and ""unlikely"" are likely to cause problems","San Diego","",""
"`3148 <https://wg21.link/LWG3148>`__","``<concepts>``\  should be freestanding","San Diego","",""
"`3153 <https://wg21.link/LWG3153>`__","``Common``\  and ``common_type``\  have too little in common","San Diego","|Complete|","13.0"
"`3154 <https://wg21.link/LWG3154>`__","``Common``\  and ``CommonReference``\  have a common defect","San Diego","",""
"","","","",""
"`3012 <https://wg21.link/LWG3012>`__","``atomic<T>``\  is unimplementable for non-``is_trivially_copy_constructible T``\ ","Kona","",""
"`3040 <https://wg21.link/LWG3040>`__","``basic_string_view::starts_with``\  *Effects* are incorrect","Kona","|Complete|",""
"`3077 <https://wg21.link/LWG3077>`__","``(push|emplace)_back``\  should invalidate the ``end``\  iterator","Kona","|Nothing To Do|",""
"`3087 <https://wg21.link/LWG3087>`__","One final ``&x``\  in |sect|\ [list.ops]","Kona","|Nothing To Do|",""
"`3101 <https://wg21.link/LWG3101>`__","``span``\ 's ``Container``\  constructors need another constraint","Kona","|Complete|",""
"`3112 <https://wg21.link/LWG3112>`__","``system_error``\  and ``filesystem_error``\  constructors taking a ``string``\  may not be able to meet their postconditions","Kona","",""
"`3119 <https://wg21.link/LWG3119>`__","Program-definedness of closure types","Kona","|Nothing To Do|",""
"`3133 <https://wg21.link/LWG3133>`__","Modernizing numeric type requirements","Kona","",""
"`3144 <https://wg21.link/LWG3144>`__","``span``\  does not have a ``const_pointer``\  typedef","Kona","|Complete|",""
"`3173 <https://wg21.link/LWG3173>`__","Enable CTAD for ``ref-view``\ ","Kona","","","|ranges|"
"`3179 <https://wg21.link/LWG3179>`__","``subrange``\  should always model ``Range``\ ","Kona","","","|ranges|"
"`3180 <https://wg21.link/LWG3180>`__","Inconsistently named return type for ``ranges::minmax_element``\ ","Kona","","","|ranges|"
"`3182 <https://wg21.link/LWG3182>`__","Specification of ``Same``\  could be clearer","Kona","",""
"","","","",""
"`2899 <https://wg21.link/LWG2899>`__","``is_(nothrow_)move_constructible``\  and ``tuple``\ , ``optional``\  and ``unique_ptr``\ ","Cologne","",""
"`3055 <https://wg21.link/LWG3055>`__","``path::operator+=(*single-character*)``\  misspecified","Cologne","|Complete|","7.0"
"`3158 <https://wg21.link/LWG3158>`__","``tuple(allocator_arg_t, const Alloc&)``\  should be conditionally explicit","Cologne","|Complete|","10.0"
"`3169 <https://wg21.link/LWG3169>`__","``ranges``\  permutation generators discard useful information","Cologne","","","|ranges|"
"`3183 <https://wg21.link/LWG3183>`__","Normative permission to specialize Ranges variable templates","Cologne","","","|ranges|"
"`3184 <https://wg21.link/LWG3184>`__","Inconsistencies in ``bind_front``\  wording","Cologne","|Complete|","13.0"
"`3185 <https://wg21.link/LWG3185>`__","Uses-allocator construction functions missing ``constexpr``\  and ``noexcept``\ ","Cologne","",""
"`3186 <https://wg21.link/LWG3186>`__","``ranges``\  removal, partition, and ``partial_sort_copy``\  algorithms discard useful information","Cologne","","","|ranges|"
"`3187 <https://wg21.link/LWG3187>`__","`P0591R4 <https://wg21.link/p0591r4>`__ reverted DR 2586 fixes to ``scoped_allocator_adaptor::construct()``\ ","Cologne","",""
"`3191 <https://wg21.link/LWG3191>`__","``std::ranges::shuffle``\  synopsis does not match algorithm definition","Cologne","","","|ranges|"
"`3196 <https://wg21.link/LWG3196>`__","``std::optional<T>``\  is ill-formed is ``T``\  is an array","Cologne","|Complete|",""
"`3198 <https://wg21.link/LWG3198>`__","Bad constraint on ``std::span::span()``\ ","Cologne","|Complete|",""
"`3199 <https://wg21.link/LWG3199>`__","``istream >> bitset<0>``\  fails","Cologne","",""
"`3202 <https://wg21.link/LWG3202>`__","P0318R1 was supposed to be revised","Cologne","|Complete|",""
"`3206 <https://wg21.link/LWG3206>`__","``year_month_day``\  conversion to ``sys_days``\  uses not-existing member function","Cologne","|Complete|",""
"`3208 <https://wg21.link/LWG3208>`__","``Boolean``\ 's expression requirements are ordered inconsistently","Cologne","|Nothing To Do|",""
"`3209 <https://wg21.link/LWG3209>`__","Expression in ``year::ok()``\  returns clause is ill-formed","Cologne","|Complete|",""
"","","","",""
"`3231 <https://wg21.link/LWG3231>`__","``year_month_day_last::day``\  specification does not cover ``!ok()``\  values","Belfast","|Nothing To Do|",""
"`3225 <https://wg21.link/LWG3225>`__","``zoned_time``\  converting constructor shall not be ``noexcept``\ ","Belfast","","","|chrono|"
"`3190 <https://wg21.link/LWG3190>`__","``std::allocator::allocate``\  sometimes returns too little storage","Belfast","|Complete|","14.0"
"`3218 <https://wg21.link/LWG3218>`__","Modifier for ``%d``\  parse flag does not match POSIX and ``format``\  specification","Belfast","","","|chrono| |format|"
"`3224 <https://wg21.link/LWG3224>`__","``zoned_time``\  constructor from ``TimeZonePtr``\  does not specify initialization of ``tp_``\ ","Belfast","","","|chrono|"
"`3230 <https://wg21.link/LWG3230>`__","Format specifier ``%y/%Y``\  is missing locale alternative versions","Belfast","","","|chrono| |format|"
"`3232 <https://wg21.link/LWG3232>`__","Inconsistency in ``zoned_time``\  deduction guides","Belfast","","","|chrono|"
"`3222 <https://wg21.link/LWG3222>`__","P0574R1 introduced preconditions on non-existent parameters","Belfast","",""
"`3221 <https://wg21.link/LWG3221>`__","Result of ``year_month``\  arithmetic with ``months``\  is ambiguous","Belfast","|Complete|","8.0"
"`3235 <https://wg21.link/LWG3235>`__","``parse``\  manipulator without abbreviation is not callable","Belfast","",""
"`3246 <https://wg21.link/LWG3246>`__","What are the constraints on the template parameter of ``basic_format_arg``\ ?","Belfast","","","|format|"
"`3253 <https://wg21.link/LWG3253>`__","``basic_syncbuf::basic_syncbuf()``\  should not be explicit","Belfast","",""
"`3245 <https://wg21.link/LWG3245>`__","Unnecessary restriction on ``'%p'``\  parse specifier","Belfast","","","|chrono|"
"`3244 <https://wg21.link/LWG3244>`__","Constraints for ``Source``\  in |sect|\ [fs.path.req] insufficiently constrainty","Belfast","",""
"`3241 <https://wg21.link/LWG3241>`__","``chrono-spec``\  grammar ambiguity in |sect|\ [time.format]","Belfast","","","|chrono| |format|"
"`3257 <https://wg21.link/LWG3257>`__","Missing feature testing macro update from P0858","Belfast","",""
"`3256 <https://wg21.link/LWG3256>`__","Feature testing macro for ``constexpr``\  algorithms","Belfast","|Complete|","13.0"
"`3273 <https://wg21.link/LWG3273>`__","Specify ``weekday_indexed``\  to range of ``[0, 7]``\ ","Belfast","","","|chrono|"
"`3070 <https://wg21.link/LWG3070>`__","``path::lexically_relative``\  causes surprising results if a filename can also be a  *root-name*","Belfast","",""
"`3266 <https://wg21.link/LWG3266>`__","``to_chars(bool)``\  should be deleted","Belfast","|Complete|","14.0"
"`3272 <https://wg21.link/LWG3272>`__","``%I%p``\  should parse/format ``duration``\  since midnight","Belfast","","","|chrono| |format|"
"`3259 <https://wg21.link/LWG3259>`__","The definition of *constexpr iterators* should be adjusted","Belfast","","","|ranges|"
"`3103 <https://wg21.link/LWG3103>`__","Errors in taking subview of ``span``\  should be ill-formed where possible","Belfast","",""
"`3274 <https://wg21.link/LWG3274>`__","Missing feature test macro for ``<span>``\ ","Belfast","|Complete|","11.0"
"`3276 <https://wg21.link/LWG3276>`__","Class ``split_view::outer_iterator::value_type``\  should inherit from ``view_interface``\ ","Belfast","","","|ranges|"
"`3277 <https://wg21.link/LWG3277>`__","Pre-increment on prvalues is not a requirement of ``weakly_incrementable``\ ","Belfast","","","|ranges|"
"`3149 <https://wg21.link/LWG3149>`__","``DefaultConstructible``\  should require default initialization","Belfast","|Complete|","13.0"
"","","","",""
"`1203 <https://wg21.link/LWG1203>`__","More useful rvalue stream insertion","Prague","|Complete|","12.0"
"`2859 <https://wg21.link/LWG2859>`__","Definition of *reachable* in [ptr.launder] misses pointer arithmetic from pointer-interconvertible object","Prague","",""
"`3018 <https://wg21.link/LWG3018>`__","``shared_ptr``\  of function type","Prague","",""
"`3050 <https://wg21.link/LWG3050>`__","Conversion specification problem in ``chrono::duration``\  constructor","Prague","","","|chrono|"
"`3141 <https://wg21.link/LWG3141>`__","``CopyConstructible``\  doesn't preserve source values","Prague","|Nothing to do|",""
"`3150 <https://wg21.link/LWG3150>`__","``UniformRandomBitGenerator``\  should validate ``min``\  and ``max``\ ","Prague","|Complete|","13.0"
"`3175 <https://wg21.link/LWG3175>`__","The ``CommonReference``\  requirement of concept ``SwappableWith``\  is not satisfied in the example","Prague","|Complete|","13.0"
"`3194 <https://wg21.link/LWG3194>`__","``ConvertibleTo``\  prose does not match code","Prague","|Complete|","13.0"
"`3200 <https://wg21.link/LWG3200>`__","``midpoint``\  should not constrain ``T``\  is complete","Prague","|Nothing To Do|",""
"`3201 <https://wg21.link/LWG3201>`__","``lerp``\  should be marked as ``noexcept``\ ","Prague","|Complete|",""
"`3226 <https://wg21.link/LWG3226>`__","``zoned_time``\  constructor from ``string_view``\  should accept ``zoned_time<Duration2, TimeZonePtr2>``\ ","Prague","","","|chrono|"
"`3233 <https://wg21.link/LWG3233>`__","Broken requirements for ``shared_ptr``\  converting constructors","Prague","",""
"`3237 <https://wg21.link/LWG3237>`__","LWG 3038 and 3190 have inconsistent PRs","Prague","|Complete|","14.0"
"`3238 <https://wg21.link/LWG3238>`__","Insufficiently-defined behavior of ``std::function``\  deduction guides","Prague","",""
"`3242 <https://wg21.link/LWG3242>`__","``std::format``\ : missing rules for ``arg-id``\  in ``width``\  and ``precision``\ ","Prague","|Complete|","Clang 14","|format|"
"`3243 <https://wg21.link/LWG3243>`__","``std::format``\  and negative zeroes","Prague","|Complete|","14.0","|format|"
"`3247 <https://wg21.link/LWG3247>`__","``ranges::iter_move``\  should perform ADL-only lookup of ``iter_move``\ ","Prague","","","|ranges|"
"`3248 <https://wg21.link/LWG3248>`__","``std::format``\  ``#b``\ , ``#B``\ , ``#o``\ , ``#x``\ , and ``#X``\   presentation types misformat negative numbers","Prague","|Complete|","14.0","|format|"
"`3250 <https://wg21.link/LWG3250>`__","``std::format``\ : ``#``\  (alternate form) for NaN and inf","Prague","|Complete|","14.0","|format|"
"`3251 <https://wg21.link/LWG3251>`__","Are ``std::format``\  alignment specifiers applied to string arguments?","Prague","|Complete|","14.0","|format|"
"`3252 <https://wg21.link/LWG3252>`__","Parse locale's aware modifiers for commands are not consistent with POSIX spec","Prague","","","|chrono|"
"`3254 <https://wg21.link/LWG3254>`__","Strike ``stop_token``\ 's ``operator!=``\ ","Prague","",""
"`3255 <https://wg21.link/LWG3255>`__","``span``\ 's ``array``\  constructor is too strict","Prague","|Complete|",""
"`3260 <https://wg21.link/LWG3260>`__","``year_month*``\  arithmetic rejects durations convertible to years","Prague","","","|chrono|"
"`3262 <https://wg21.link/LWG3262>`__","Formatting of negative durations is not specified","Prague","","","|chrono| |format|"
"`3264 <https://wg21.link/LWG3264>`__","``sized_range``\  and ``ranges::size``\  redundantly use ``disable_sized_range``\ ","Prague","","","|ranges|"
"`3269 <https://wg21.link/LWG3269>`__","Parse manipulators do not specify the result of the extraction from stream","Prague","","","|chrono|"
"`3270 <https://wg21.link/LWG3270>`__","Parsing and formatting ``%j``\  with ``duration``\ s","Prague","","","|chrono| |format|"
"`3280 <https://wg21.link/LWG3280>`__","View converting constructors can cause constraint recursion and are unneeded","Prague","","","|ranges|"
"`3281 <https://wg21.link/LWG3281>`__","Conversion from ``*pair-like*``\  types to ``subrange``\  is a silent semantic promotion","Prague","","","|ranges|"
"`3282 <https://wg21.link/LWG3282>`__","``subrange``\  converting constructor should disallow derived to base conversions","Prague","","","|ranges|"
"`3284 <https://wg21.link/LWG3284>`__","``random_access_iterator``\  semantic constraints accidentally promote difference type  using unary negate","Prague","","","|ranges|"
"`3285 <https://wg21.link/LWG3285>`__","The type of a customization point object shall satisfy ``semiregular``\ ","Prague","",""
"`3286 <https://wg21.link/LWG3286>`__","``ranges::size``\  is not required to be valid after a call to ``ranges::begin``\  on an input range","Prague","","","|ranges|"
"`3291 <https://wg21.link/LWG3291>`__","``iota_view::iterator``\  has the wrong ``iterator_category``\ ","Prague","","","|ranges|"
"`3292 <https://wg21.link/LWG3292>`__","``iota_view``\  is under-constrained","Prague","","","|ranges|"
"`3294 <https://wg21.link/LWG3294>`__","``zoned_time``\  deduction guides misinterprets ``string``\ /``char*``\ ","Prague","","","|chrono|"
"`3296 <https://wg21.link/LWG3296>`__","Inconsistent default argument for ``basic_regex<>::assign``\ ","Prague","|Complete|",""
"`3299 <https://wg21.link/LWG3299>`__","Pointers don't need customized iterator behavior","Prague","","","|ranges|"
"`3300 <https://wg21.link/LWG3300>`__","Non-array ``ssize``\  overload is underconstrained","Prague","",""
"`3301 <https://wg21.link/LWG3301>`__","``transform_view::iterator``\  has incorrect ``iterator_category``\ ","Prague","","","|ranges|"
"`3302 <https://wg21.link/LWG3302>`__","Range adaptor objects ``keys``\  and ``values``\  are unspecified","Prague","","","|ranges|"
"`3303 <https://wg21.link/LWG3303>`__","Bad ""``constexpr``\ "" marker for ``destroy/destroy_n``\ ","Prague","",""
"`3304 <https://wg21.link/LWG3304>`__","Allocate functions of ``std::polymorphic_allocator``\  should require ``[[nodiscard]]``\ ","Prague","",""
"`3307 <https://wg21.link/LWG3307>`__","``std::allocator<void>().allocate(n)``\ ","Prague","",""
"`3310 <https://wg21.link/LWG3310>`__","Replace ``SIZE_MAX``\  with ``numeric_limits<size_t>::max()``\ ","Prague","",""
"`3313 <https://wg21.link/LWG3313>`__","``join_view::iterator::operator--``\  is incorrectly constrained","Prague","","","|ranges|"
"`3314 <https://wg21.link/LWG3314>`__","Is stream insertion behavior locale dependent when ``Period::type``\  is ``micro``\ ?","Prague","","","|chrono|"
"`3315 <https://wg21.link/LWG3315>`__","Correct Allocator Default Behavior","Prague","",""
"`3316 <https://wg21.link/LWG3316>`__","Correctly define epoch for ``utc_clock``\  / ``utc_timepoint``\ ","Prague","","","|chrono|"
"`3317 <https://wg21.link/LWG3317>`__","Incorrect ``operator<<``\  for floating-point durations","Prague","","","|chrono|"
"`3318 <https://wg21.link/LWG3318>`__","Clarify whether clocks can represent time before their epoch","Prague","","","|chrono|"
"`3319 <https://wg21.link/LWG3319>`__","Properly reference specification of IANA time zone database","Prague","","","|chrono|"
"`3320 <https://wg21.link/LWG3320>`__","``span::cbegin/cend``\  methods produce different results than ``std::[ranges::]cbegin/cend``\ ","Prague","|Complete|",""
"`3321 <https://wg21.link/LWG3321>`__","``uninitialized_construct_using_allocator``\  should use ``construct_at``\ ","Prague","",""
"`3323 <https://wg21.link/LWG3323>`__","``*has-tuple-element*``\  helper concept needs ``convertible_to``\ ","Prague","","","|ranges|"
"`3324 <https://wg21.link/LWG3324>`__","Special-case ``std::strong/weak/partial_order``\  for pointers","Prague","|Complete|","14.0","|spaceship|"
"`3325 <https://wg21.link/LWG3325>`__","Constrain return type of transformation function for ``transform_view``\ ","Prague","","","|ranges|"
"`3326 <https://wg21.link/LWG3326>`__","``enable_view``\  has false positives","Prague","|In progress|","","|ranges|"
"`3327 <https://wg21.link/LWG3327>`__","Format alignment specifiers vs. text direction","Prague","|Nothing To Do|","","|format|"
"`3328 <https://wg21.link/LWG3328>`__","Clarify that ``std::string``\  is not good for UTF-8","Prague","",""
"`3329 <https://wg21.link/LWG3329>`__","``totally_ordered_with``\  both directly and indirectly requires ``common_reference_with``\ ","Prague","|Complete|","13.0"
"`3330 <https://wg21.link/LWG3330>`__","Include ``<compare>``\  from most library headers","Prague","|Complete|","13.0","|spaceship|"
"`3331 <https://wg21.link/LWG3331>`__","Define ``totally_ordered/_with``\  in terms of ``partially-ordered-with``\ ","Prague","|Complete|","13.0"
"`3332 <https://wg21.link/LWG3332>`__","Issue in |sect|\ [time.format]","Prague","","","|chrono| |format|"
"`3334 <https://wg21.link/LWG3334>`__","``basic_osyncstream``\  move assignment and destruction calls ``basic_syncbuf::emit()``\  twice","Prague","",""
"`3335 <https://wg21.link/LWG3335>`__","Resolve C++20 NB comments US 273 and GB 274","Prague","","","|ranges|"
"`3338 <https://wg21.link/LWG3338>`__","Rename ``default_constructible``\  to ``default_initializable``\ ","Prague","|Complete|","13.0"
"`3340 <https://wg21.link/LWG3340>`__","Formatting functions should throw on argument/format string mismatch in |sect|\ [format.functions]","Prague","|Complete|","14.0","|format|"
"`3346 <https://wg21.link/LWG3346>`__","``pair``\  and ``tuple``\  copy and move constructor have backwards specification","Prague","",""
"`3347 <https://wg21.link/LWG3347>`__","``std::pair<T, U>``\  now requires ``T``\  and ``U``\  to be less-than-comparable","Prague","",""
"`3348 <https://wg21.link/LWG3348>`__","``__cpp_lib_unwrap_ref``\  in wrong header","Prague","|Complete|","12.0"
"`3349 <https://wg21.link/LWG3349>`__","Missing ``__cpp_lib_constexpr_complex``\  for P0415R1","Prague","",""
"`3350 <https://wg21.link/LWG3350>`__","Simplify return type of ``lexicographical_compare_three_way``\ ","Prague","","","|spaceship|"
"`3351 <https://wg21.link/LWG3351>`__","``ranges::enable_safe_range``\  should not be constrained","Prague","","","|ranges|"
"`3352 <https://wg21.link/LWG3352>`__","``strong_equality``\  isn't a thing","Prague","|Nothing To Do|","","|spaceship|"
"`3354 <https://wg21.link/LWG3354>`__","``has_strong_structural_equality``\  has a meaningless definition","Prague","","","|spaceship|"
"`3355 <https://wg21.link/LWG3355>`__","The memory algorithms should support move-only input iterators introduced by P1207","Prague","","","|ranges|"
"`3356 <https://wg21.link/LWG3356>`__","``__cpp_lib_nothrow_convertible``\  should be ``__cpp_lib_is_nothrow_convertible``\ ","Prague","|Complete|","12.0"
"`3358 <https://wg21.link/LWG3358>`__","|sect|\ [span.cons] is mistaken that ``to_address``\  can throw","Prague","",""
"`3359 <https://wg21.link/LWG3359>`__","``<chrono>``\  leap second support should allow for negative leap seconds","Prague","","","|chrono|"
"`3360 <https://wg21.link/LWG3360>`__","``three_way_comparable_with``\  is inconsistent with similar concepts","Prague","|Nothing To Do|","","|spaceship|"
"`3362 <https://wg21.link/LWG3362>`__","Strike ``stop_source``\ 's ``operator!=``\ ","Prague","",""
"`3363 <https://wg21.link/LWG3363>`__","``drop_while_view``\  should opt-out of ``sized_range``\ ","Prague","","","|ranges|"
"`3364 <https://wg21.link/LWG3364>`__","Initialize data members of ranges and their iterators","Prague","","","|ranges|"
"`3367 <https://wg21.link/LWG3367>`__","Integer-class conversions should not throw","Prague","",""
"`3369 <https://wg21.link/LWG3369>`__","``span``\ 's deduction-guide for built-in arrays doesn't work","Prague","|Complete|","14.0"
"`3371 <https://wg21.link/LWG3371>`__","``visit_format_arg``\  and ``make_format_args``\  are not hidden friends","Prague","|Complete|","14.0","|format|"
"`3372 <https://wg21.link/LWG3372>`__","``vformat_to``\  should not try to deduce ``Out``\  twice","Prague","|Complete|","14.0","|format|"
"`3373 <https://wg21.link/LWG3373>`__","``{to,from}_chars_result``\  and ``format_to_n_result``\  need the  ""we really mean what we say"" wording","Prague","|Complete|","14.0","|format|"
"`3374 <https://wg21.link/LWG3374>`__","P0653 + P1006 should have made the other ``std::to_address``\  overload ``constexpr``\ ","Prague","|Complete|","12.0"
"`3375 <https://wg21.link/LWG3375>`__","``decay``\  in ``viewable_range``\  should be ``remove_cvref``\ ","Prague","","","|ranges|"
"`3377 <https://wg21.link/LWG3377>`__","``elements_view::iterator``\  befriends a specialization of itself","Prague","","","|ranges|"
"`3379 <https://wg21.link/LWG3379>`__","""``safe``\ "" in several library names is misleading","Prague","|In Progress|",""
"`3380 <https://wg21.link/LWG3380>`__","``common_type``\  and comparison categories","Prague","","","|spaceship|"
"`3381 <https://wg21.link/LWG3381>`__","``begin``\  and ``data``\  must agree for ``contiguous_range``\ ","Prague","","","|ranges|"
"`3382 <https://wg21.link/LWG3382>`__","NTTP for ``pair``\  and ``array``\ ","Prague","",""
"`3383 <https://wg21.link/LWG3383>`__","|sect|\ [time.zone.leap.nonmembers] ``sys_seconds``\  should be replaced with ``seconds``\ ","Prague","","","|chrono|"
"`3384 <https://wg21.link/LWG3384>`__","``transform_view::*sentinel*``\  has an incorrect ``operator-``\ ","Prague","","","|ranges|"
"`3385 <https://wg21.link/LWG3385>`__","``common_iterator``\  is not sufficiently constrained for non-copyable iterators","Prague","","","|ranges|"
"`3387 <https://wg21.link/LWG3387>`__","|sect|\ [range.reverse.view] ``reverse_view<V>``\  unintentionally requires ``range<const V>``\ ","Prague","","","|ranges|"
"`3388 <https://wg21.link/LWG3388>`__","``view``\  iterator types have ill-formed ``<=>``\  operators","Prague","","","|ranges|"
"`3389 <https://wg21.link/LWG3389>`__","A move-only iterator still does not have a ``counted_iterator``\ ","Prague","","","|ranges|"
"`3390 <https://wg21.link/LWG3390>`__","``make_move_iterator()``\  cannot be used to construct a ``move_iterator``\  for a move-only iterator","Prague","|Complete|","14.0","|ranges|"
"`3393 <https://wg21.link/LWG3393>`__","Missing/incorrect feature test macro for coroutines","Prague","|Complete|","14.0"
"`3395 <https://wg21.link/LWG3395>`__","Definition for three-way comparison needs to be updated (US 152)","Prague","","","|spaceship|"
"`3396 <https://wg21.link/LWG3396>`__","Clarify point of reference for ``source_location::current()``\  (DE 169)","Prague","",""
"`3397 <https://wg21.link/LWG3397>`__","``ranges::basic_istream_view::iterator``\  should not provide ``iterator_category``\ ","Prague","","","|ranges|"
"`3398 <https://wg21.link/LWG3398>`__","``tuple_element_t``\  is also wrong for ``const subrange``\ ","Prague","|Complete|","14.0","|ranges|"
"`3446 <https://wg21.link/LWG3446>`__","``indirectly_readable_traits``\ ambiguity for types with both ``value_type``\ and ``element_type``\ ","November virtual meeting","|Complete|","13.0"