libcxx/docs/Status/Cxx20Issues.csv

   1 "Issue #","Issue Name","Meeting","Status","First released version","Labels"
   2 "`2070 <https://wg21.link/LWG2070>`__","``allocate_shared``\  should use ``allocator_traits<A>::construct``\ ","Toronto","Resolved by `P0674R1 <https://wg21.link/P0674R1>`__",""
   3 "`2444 <https://wg21.link/LWG2444>`__","Inconsistent complexity for ``std::sort_heap``\ ","Toronto","|Nothing To Do|",""
   4 "`2593 <https://wg21.link/LWG2593>`__","Moved-from state of Allocators","Toronto","",""
   5 "`2597 <https://wg21.link/LWG2597>`__","``std::log``\  misspecified for complex numbers","Toronto","",""
   6 "`2783 <https://wg21.link/LWG2783>`__","``stack::emplace()``\  and ``queue::emplace()``\  should return ``decltype(auto)``\ ","Toronto","|Complete|",""
   7 "`2932 <https://wg21.link/LWG2932>`__","Constraints on parallel algorithm implementations are underspecified","Toronto","",""
   8 "`2937 <https://wg21.link/LWG2937>`__","Is ``equivalent(""existing_thing"", ""not_existing_thing"")``\  an error","Toronto","|Complete|",""
   9 "`2940 <https://wg21.link/LWG2940>`__","``result_of``\  specification also needs a little cleanup","Toronto","|Nothing To Do|",""
  10 "`2942 <https://wg21.link/LWG2942>`__","LWG 2873's resolution missed ``weak_ptr::owner_before``\ ","Toronto","|Complete|",""
  11 "`2954 <https://wg21.link/LWG2954>`__","Specialization of the convenience variable templates should be prohibited","Toronto","|Complete|",""
  12 "`2961 <https://wg21.link/LWG2961>`__","Bad postcondition for ``set_default_resource``\ ","Toronto","|Complete|","16.0"
  13 "`2966 <https://wg21.link/LWG2966>`__","Incomplete resolution of US 74","Toronto","|Nothing To Do|",""
  14 "`2974 <https://wg21.link/LWG2974>`__","Diagnose out of bounds ``tuple_element/variant_alternative``\ ","Toronto","|Complete|",""
  15 "","","","","",""
  16 "`2779 <https://wg21.link/LWG2779>`__","[networking.ts] Relax requirements on buffer sequence iterators","Albuquerque","",""
  17 "`2870 <https://wg21.link/LWG2870>`__","Default value of parameter theta of polar should be dependent","Albuquerque","|Complete|",""
  18 "`2935 <https://wg21.link/LWG2935>`__","What should create_directories do when p already exists but is not a directory?","Albuquerque","|Nothing To Do|",""
  19 "`2941 <https://wg21.link/LWG2941>`__","[thread.req.timing] wording should apply to both member and namespace-level functions","Albuquerque","|Nothing To Do|",""
  20 "`2944 <https://wg21.link/LWG2944>`__","LWG 2905 accidentally removed requirement that construction of the deleter doesn't throw an exception","Albuquerque","|Nothing To Do|",""
  21 "`2945 <https://wg21.link/LWG2945>`__","Order of template parameters in optional comparisons","Albuquerque","|Complete|",""
  22 "`2948 <https://wg21.link/LWG2948>`__","unique_ptr does not define operator<< for stream output","Albuquerque","|Complete|",""
  23 "`2950 <https://wg21.link/LWG2950>`__","std::byte operations are misspecified","Albuquerque","|Complete|",""
  24 "`2952 <https://wg21.link/LWG2952>`__","iterator_traits should work for pointers to cv T","Albuquerque","|Complete|",""
  25 "`2953 <https://wg21.link/LWG2953>`__","LWG 2853 should apply to deque::erase too","Albuquerque","|Complete|",""
  26 "`2958 <https://wg21.link/LWG2958>`__","Moves improperly defined as deleted","Albuquerque","|Complete|",""
  27 "`2964 <https://wg21.link/LWG2964>`__","Apparently redundant requirement for dynamic_pointer_cast","Albuquerque","",""
  28 "`2965 <https://wg21.link/LWG2965>`__","Non-existing path::native_string() in filesystem_error::what() specification","Albuquerque","|Nothing To Do|",""
  29 "`2972 <https://wg21.link/LWG2972>`__","What is ``is_trivially_destructible_v<int>``\ ?","Albuquerque","|Complete|",""
  30 "`2976 <https://wg21.link/LWG2976>`__","Dangling uses_allocator specialization for packaged_task","Albuquerque","|Complete|",""
  31 "`2977 <https://wg21.link/LWG2977>`__","unordered_meow::merge() has incorrect Throws: clause","Albuquerque","|Nothing To Do|",""
  32 "`2978 <https://wg21.link/LWG2978>`__","Hash support for pmr::string and friends","Albuquerque","|Complete|","16.0"
  33 "`2979 <https://wg21.link/LWG2979>`__","aligned_union should require complete object types","Albuquerque","|Complete|",""
  34 "`2980 <https://wg21.link/LWG2980>`__","Cannot compare_exchange empty pointers","Albuquerque","",""
  35 "`2981 <https://wg21.link/LWG2981>`__","Remove redundant deduction guides from standard library","Albuquerque","|Nothing To Do|",""
  36 "`2982 <https://wg21.link/LWG2982>`__","Making size_type consistent in associative container deduction guides","Albuquerque","",""
  37 "`2988 <https://wg21.link/LWG2988>`__","Clause 32 cleanup missed one typename","Albuquerque","|Complete|","13.0"
  38 "`2993 <https://wg21.link/LWG2993>`__","reference_wrapper<T> conversion from T&&","Albuquerque","|Complete|","13.0"
  39 "`2998 <https://wg21.link/LWG2998>`__","Requirements on function objects passed to {``forward_``,}list-specific algorithms","Albuquerque","|Nothing To Do|",""
  40 "`3001 <https://wg21.link/LWG3001>`__","weak_ptr::element_type needs remove_extent_t","Albuquerque","|Complete|","14.0"
  41 "`3024 <https://wg21.link/LWG3024>`__","variant's copies must be deleted instead of disabled via SFINAE","Albuquerque","|Complete|",""
  42 "","","","","",""
  43 "`2164 <https://wg21.link/LWG2164>`__","What are the semantics of ``vector.emplace(vector.begin(), vector.back())``\ ?","Jacksonville","|Complete|",""
  44 "`2243 <https://wg21.link/LWG2243>`__","``istream::putback``\  problem","Jacksonville","|Complete|",""
  45 "`2816 <https://wg21.link/LWG2816>`__","``resize_file``\  has impossible postcondition","Jacksonville","|Nothing To Do|",""
  46 "`2843 <https://wg21.link/LWG2843>`__","Unclear behavior of ``std::pmr::memory_resource::do_allocate()``\ ","Jacksonville","|Complete|",""
  47 "`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|",""
  48 "`2851 <https://wg21.link/LWG2851>`__","``std::filesystem``\  enum classes are now underspecified","Jacksonville","|Nothing To Do|",""
  49 "`2946 <https://wg21.link/LWG2946>`__","LWG 2758's resolution missed further corrections","Jacksonville","|Complete|",""
  50 "`2969 <https://wg21.link/LWG2969>`__","``polymorphic_allocator::construct()``\  shouldn't pass ``resource()``\ ","Jacksonville","|Complete|",""
  51 "`2975 <https://wg21.link/LWG2975>`__","Missing case for ``pair``\  construction in scoped and polymorphic allocators","Jacksonville","",""
  52 "`2989 <https://wg21.link/LWG2989>`__","``path``\ 's stream insertion operator lets you insert everything under the sun","Jacksonville","|Complete|",""
  53 "`3000 <https://wg21.link/LWG3000>`__","``monotonic_memory_resource::do_is_equal``\  uses ``dynamic_cast``\  unnecessarily","Jacksonville","|Complete|","16.0"
  54 "`3002 <https://wg21.link/LWG3002>`__","[networking.ts] ``basic_socket_acceptor::is_open()``\  isn't ``noexcept``\ ","Jacksonville","",""
  55 "`3004 <https://wg21.link/LWG3004>`__","|sect|\ [string.capacity] and |sect|\ [vector.capacity] should specify time complexity for ``capacity()``\ ","Jacksonville","|Nothing To Do|",""
  56 "`3005 <https://wg21.link/LWG3005>`__","Destruction order of arrays by ``make_shared/allocate_shared``\  only recommended?","Jacksonville","",""
  57 "`3007 <https://wg21.link/LWG3007>`__","``allocate_shared``\  should rebind allocator to *cv*-unqualified ``value_type``\  for construction","Jacksonville","",""
  58 "`3009 <https://wg21.link/LWG3009>`__","Including ``<string_view>``\  doesn't provide ``std::size/empty/data``\ ","Jacksonville","|Complete|",""
  59 "`3010 <https://wg21.link/LWG3010>`__","[networking.ts] ``uses_executor``\  says ""if a type ``T::executor_type``\  exists""","Jacksonville","",""
  60 "`3013 <https://wg21.link/LWG3013>`__","``(recursive_)directory_iterator``\  construction and traversal should not be ``noexcept``\ ","Jacksonville","|Complete|",""
  61 "`3014 <https://wg21.link/LWG3014>`__","More ``noexcept``\  issues with filesystem operations","Jacksonville","|Complete|",""
  62 "`3015 <https://wg21.link/LWG3015>`__","``copy_options::*unspecified*``\  underspecified","Jacksonville","|Nothing To Do|",""
  63 "`3017 <https://wg21.link/LWG3017>`__","``list splice``\  functions should use ``addressof``\ ","Jacksonville","|Complete|",""
  64 "`3020 <https://wg21.link/LWG3020>`__","[networking.ts] Remove spurious nested ``value_type``\  buffer sequence requirement","Jacksonville","",""
  65 "`3026 <https://wg21.link/LWG3026>`__","``filesystem::weakly_canonical``\  still defined in terms of ``canonical(p, base)``\ ","Jacksonville","|Complete|",""
  66 "`3030 <https://wg21.link/LWG3030>`__","Who shall meet the requirements of ``try_lock``\ ?","Jacksonville","|Nothing To Do|",""
  67 "`3034 <https://wg21.link/LWG3034>`__","P0767R1 breaks previously-standard-layout types","Jacksonville","|Complete|",""
  68 "`3035 <https://wg21.link/LWG3035>`__","``std::allocator``\ 's constructors should be ``constexpr``\ ","Jacksonville","|Complete|",""
  69 "`3039 <https://wg21.link/LWG3039>`__","Unnecessary ``decay``\  in ``thread``\  and ``packaged_task``\ ","Jacksonville","|Complete|",""
  70 "`3041 <https://wg21.link/LWG3041>`__","Unnecessary ``decay``\  in ``reference_wrapper``\ ","Jacksonville","|Complete|",""
  71 "`3042 <https://wg21.link/LWG3042>`__","``is_literal_type_v``\  should be inline","Jacksonville","|Complete|",""
  72 "`3043 <https://wg21.link/LWG3043>`__","Bogus postcondition for ``filesystem_error``\  constructor","Jacksonville","|Complete|",""
  73 "`3045 <https://wg21.link/LWG3045>`__","``atomic<floating-point>``\  doesn't have ``value_type``\  or ``difference_type``\ ","Jacksonville","",""
  74 "`3048 <https://wg21.link/LWG3048>`__","``transform_reduce(exec, first1, last1, first2, init)``\  discards execution policy","Jacksonville","|Complete|","17.0"
  75 "`3051 <https://wg21.link/LWG3051>`__","Floating point classifications were inadvertently changed in P0175","Jacksonville","|Nothing To Do|",""
  76 "`3075 <https://wg21.link/LWG3075>`__","``basic_string``\  needs deduction guides from ``basic_string_view``\ ","Jacksonville","|Complete|",""
  77 "","","","","",""
  78 "`2139 <https://wg21.link/LWG2139>`__","What is a user-defined type?","Rapperswil","",""
  79 "`2970 <https://wg21.link/LWG2970>`__","Return type of std::visit misspecified","Rapperswil","|Complete|","11.0"
  80 "`3058 <https://wg21.link/LWG3058>`__","Parallel adjacent_difference shouldn't require creating temporaries","Rapperswil","",""
  81 "`3062 <https://wg21.link/LWG3062>`__","Unnecessary decay_t in is_execution_policy_v should be remove_cvref_t","Rapperswil","",""
  82 "`3067 <https://wg21.link/LWG3067>`__","recursive_directory_iterator::pop must invalidate","Rapperswil","|Nothing To Do|",""
  83 "`3071 <https://wg21.link/LWG3071>`__","[networking.ts] read_until still refers to ""input sequence""","Rapperswil","|Nothing To Do|",""
  84 "`3074 <https://wg21.link/LWG3074>`__","Non-member functions for valarray should only deduce from the valarray","Rapperswil","",""
  85 "`3076 <https://wg21.link/LWG3076>`__","basic_string CTAD ambiguity","Rapperswil","|Complete|",""
  86 "`3079 <https://wg21.link/LWG3079>`__","LWG 2935 forgot to fix the existing_p overloads of create_directory","Rapperswil","|Nothing To Do|",""
  87 "`3080 <https://wg21.link/LWG3080>`__","Floating point from_chars pattern specification breaks round-tripping","Rapperswil","",""
  88 "`3083 <https://wg21.link/LWG3083>`__","What should ios::iword(-1) do?","Rapperswil","|Nothing To Do|",""
  89 "`3094 <https://wg21.link/LWG3094>`__","[time.duration.io]p4 makes surprising claims about encoding","Rapperswil","",""
  90 "`3100 <https://wg21.link/LWG3100>`__","Unnecessary and confusing ""empty span"" wording","Rapperswil","|Nothing To Do|",""
  91 "`3102 <https://wg21.link/LWG3102>`__","Clarify span iterator and ``const_iterator`` behavior","Rapperswil","|Complete|",""
  92 "`3104 <https://wg21.link/LWG3104>`__","Fixing duration division","Rapperswil","|Complete|",""
  93 "","","","","",""
  94 "`2183 <https://wg21.link/LWG2183>`__","Muddled allocator requirements for ``match_results``\  constructors","San Diego","|Complete|",""
  95 "`2184 <https://wg21.link/LWG2184>`__","Muddled allocator requirements for ``match_results``\  assignments","San Diego","|Complete|",""
  96 "`2412 <https://wg21.link/LWG2412>`__","``promise::set_value()``\  and ``promise::get_future()``\  should not race","San Diego","",""
  97 "`2499 <https://wg21.link/LWG2499>`__","``operator>>(basic_istream&, CharT*)``\  makes it hard to avoid buffer overflows","San Diego","Resolved by `P0487R1 <https://wg21.link/P0487R1>`__",""
  98 "`2682 <https://wg21.link/LWG2682>`__","``filesystem::copy()``\  won't create a symlink to a directory","San Diego","|Nothing To Do|",""
  99 "`2697 <https://wg21.link/LWG2697>`__","[concurr.ts] Behavior of ``future/shared_future``\  unwrapping constructor when given an invalid ``future``\ ","San Diego","",""
 100 "`2797 <https://wg21.link/LWG2797>`__","Trait precondition violations","San Diego","Resolved by `P1285R0 <https://wg21.link/P1285R0>`__",""
 101 "`2936 <https://wg21.link/LWG2936>`__","Path comparison is defined in terms of the generic format","San Diego","|Complete|",""
 102 "`2943 <https://wg21.link/LWG2943>`__","Problematic specification of the wide version of ``basic_filebuf::open``\ ","San Diego","|Nothing To Do|",""
 103 "`2960 <https://wg21.link/LWG2960>`__","[fund.ts.v3] ``nonesuch``\  is insufficiently useless","San Diego","|Complete|",""
 104 "`2995 <https://wg21.link/LWG2995>`__","``basic_stringbuf``\  default constructor forbids it from using SSO capacity","San Diego","",""
 105 "`2996 <https://wg21.link/LWG2996>`__","Missing rvalue overloads for ``shared_ptr``\  operations","San Diego","|Complete|","17.0"
 106 "`3008 <https://wg21.link/LWG3008>`__","``make_shared``\  (sub)object destruction semantics are not specified","San Diego","|Complete|","16.0"
 107 "`3022 <https://wg21.link/LWG3022>`__","``is_convertible<derived*, base*>``\  may lead to ODR","San Diego","Resolved by `P1285R0 <https://wg21.link/P1285R0>`__",""
 108 "`3025 <https://wg21.link/LWG3025>`__","Map-like container deduction guides should use ``pair<Key, T>``\ , not ``pair<const Key, T>``\ ","San Diego","|Complete|",""
 109 "`3031 <https://wg21.link/LWG3031>`__","Algorithms and predicates with non-const reference arguments","San Diego","",""
 110 "`3037 <https://wg21.link/LWG3037>`__","``polymorphic_allocator``\  and incomplete types","San Diego","|Complete|","16.0"
 111 "`3038 <https://wg21.link/LWG3038>`__","``polymorphic_allocator::allocate``\  should not allow integer overflow to create vulnerabilities","San Diego","|Complete|","14.0"
 112 "`3054 <https://wg21.link/LWG3054>`__","``uninitialized_copy``\  appears to not be able to meet its exception-safety guarantee","San Diego","|Nothing To Do|",""
 113 "`3065 <https://wg21.link/LWG3065>`__","LWG 2989 missed that all ``path``\ 's other operators should be hidden friends as well","San Diego","|Complete|",""
 114 "`3096 <https://wg21.link/LWG3096>`__","``path::lexically_relative``\  is confused by trailing slashes","San Diego","|Complete|",""
 115 "`3116 <https://wg21.link/LWG3116>`__","``OUTERMOST_ALLOC_TRAITS``\  needs ``remove_reference_t``\ ","San Diego","",""
 116 "`3122 <https://wg21.link/LWG3122>`__","``__cpp_lib_chrono_udls``\  was accidentally dropped","San Diego","|Complete|",""
 117 "`3127 <https://wg21.link/LWG3127>`__","``basic_osyncstream::rdbuf``\  needs a ``const_cast``\ ","San Diego","",""
 118 "`3128 <https://wg21.link/LWG3128>`__","``strstream::rdbuf``\  needs a ``const_cast``\ ","San Diego","|Nothing To Do|",""
 119 "`3129 <https://wg21.link/LWG3129>`__","``regex_token_iterator``\  constructor uses wrong pointer arithmetic","San Diego","",""
 120 "`3130 <https://wg21.link/LWG3130>`__","|sect|\ [input.output] needs many ``addressof``\ ","San Diego","",""
 121 "`3131 <https://wg21.link/LWG3131>`__","``addressof``\  all the things","San Diego","",""
 122 "`3132 <https://wg21.link/LWG3132>`__","Library needs to ban macros named ``expects``\  or ``ensures``\ ","San Diego","|Nothing To Do|",""
 123 "`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 <https://wg21.link/P1210R0>`__",""
 124 "`3137 <https://wg21.link/LWG3137>`__","Header for ``__cpp_lib_to_chars``\ ","San Diego","|Complete|",""
 125 "`3140 <https://wg21.link/LWG3140>`__","``COMMON_REF``\ is unimplementable as specified","San Diego","|Nothing To Do|",""
 126 "`3145 <https://wg21.link/LWG3145>`__","``file_clock``\  breaks ABI for C++17 implementations","San Diego","|Complete|",""
 127 "`3147 <https://wg21.link/LWG3147>`__","Definitions of ""likely"" and ""unlikely"" are likely to cause problems","San Diego","",""
 128 "`3148 <https://wg21.link/LWG3148>`__","``<concepts>``\  should be freestanding","San Diego","",""
 129 "`3153 <https://wg21.link/LWG3153>`__","``Common``\  and ``common_type``\  have too little in common","San Diego","|Complete|","13.0"
 130 "`3154 <https://wg21.link/LWG3154>`__","``Common``\  and ``CommonReference``\  have a common defect","San Diego","|Nothing To Do|",""
 131 "","","","","",""
 132 "`3012 <https://wg21.link/LWG3012>`__","``atomic<T>``\  is unimplementable for non-``is_trivially_copy_constructible T``\ ","Kona","",""
 133 "`3040 <https://wg21.link/LWG3040>`__","``basic_string_view::starts_with``\  *Effects* are incorrect","Kona","|Complete|",""
 134 "`3077 <https://wg21.link/LWG3077>`__","``(push|emplace)_back``\  should invalidate the ``end``\  iterator","Kona","|Nothing To Do|",""
 135 "`3087 <https://wg21.link/LWG3087>`__","One final ``&x``\  in |sect|\ [list.ops]","Kona","|Nothing To Do|",""
 136 "`3101 <https://wg21.link/LWG3101>`__","``span``\ 's ``Container``\  constructors need another constraint","Kona","|Complete|",""
 137 "`3112 <https://wg21.link/LWG3112>`__","``system_error``\  and ``filesystem_error``\  constructors taking a ``string``\  may not be able to meet their postconditions","Kona","",""
 138 "`3119 <https://wg21.link/LWG3119>`__","Program-definedness of closure types","Kona","|Nothing To Do|",""
 139 "`3133 <https://wg21.link/LWG3133>`__","Modernizing numeric type requirements","Kona","",""
 140 "`3144 <https://wg21.link/LWG3144>`__","``span``\  does not have a ``const_pointer``\  typedef","Kona","|Complete|",""
 141 "`3173 <https://wg21.link/LWG3173>`__","Enable CTAD for ``ref-view``\ ","Kona","|Complete|","15.0","|ranges|"
 142 "`3179 <https://wg21.link/LWG3179>`__","``subrange``\  should always model ``Range``\ ","Kona","|Nothing To Do|","","|ranges|"
 143 "`3180 <https://wg21.link/LWG3180>`__","Inconsistently named return type for ``ranges::minmax_element``\ ","Kona","|Complete|","15.0","|ranges|"
 144 "`3182 <https://wg21.link/LWG3182>`__","Specification of ``Same``\  could be clearer","Kona","|Complete|","15.0"
 145 "","","","","",""
 146 "`2899 <https://wg21.link/LWG2899>`__","``is_(nothrow_)move_constructible``\  and ``tuple``\ , ``optional``\  and ``unique_ptr``\ ","Cologne","",""
 147 "`3055 <https://wg21.link/LWG3055>`__","``path::operator+=(*single-character*)``\  misspecified","Cologne","|Complete|","7.0"
 148 "`3158 <https://wg21.link/LWG3158>`__","``tuple(allocator_arg_t, const Alloc&)``\  should be conditionally explicit","Cologne","|Complete|","10.0"
 149 "`3169 <https://wg21.link/LWG3169>`__","``ranges``\  permutation generators discard useful information","Cologne","|Complete|","15.0","|ranges|"
 150 "`3183 <https://wg21.link/LWG3183>`__","Normative permission to specialize Ranges variable templates","Cologne","|Nothing To Do|","","|ranges|"
 151 "`3184 <https://wg21.link/LWG3184>`__","Inconsistencies in ``bind_front``\  wording","Cologne","|Complete|","13.0"
 152 "`3185 <https://wg21.link/LWG3185>`__","Uses-allocator construction functions missing ``constexpr``\  and ``noexcept``\ ","Cologne","|Complete|","16.0"
 153 "`3186 <https://wg21.link/LWG3186>`__","``ranges``\  removal, partition, and ``partial_sort_copy``\  algorithms discard useful information","Cologne","|Complete|","15.0","|ranges|"
 154 "`3187 <https://wg21.link/LWG3187>`__","`P0591R4 <https://wg21.link/p0591r4>`__ reverted DR 2586 fixes to ``scoped_allocator_adaptor::construct()``\ ","Cologne","",""
 155 "`3191 <https://wg21.link/LWG3191>`__","``std::ranges::shuffle``\  synopsis does not match algorithm definition","Cologne","|Complete|","15.0","|ranges|"
 156 "`3196 <https://wg21.link/LWG3196>`__","``std::optional<T>``\  is ill-formed is ``T``\  is an array","Cologne","|Complete|",""
 157 "`3198 <https://wg21.link/LWG3198>`__","Bad constraint on ``std::span::span()``\ ","Cologne","|Complete|",""
 158 "`3199 <https://wg21.link/LWG3199>`__","``istream >> bitset<0>``\  fails","Cologne","",""
 159 "`3202 <https://wg21.link/LWG3202>`__","P0318R1 was supposed to be revised","Cologne","|Complete|",""
 160 "`3206 <https://wg21.link/LWG3206>`__","``year_month_day``\  conversion to ``sys_days``\  uses not-existing member function","Cologne","|Complete|",""
 161 "`3208 <https://wg21.link/LWG3208>`__","``Boolean``\ 's expression requirements are ordered inconsistently","Cologne","|Nothing To Do|",""
 162 "`3209 <https://wg21.link/LWG3209>`__","Expression in ``year::ok()``\  returns clause is ill-formed","Cologne","|Complete|",""
 163 "","","","","",""
 164 "`3231 <https://wg21.link/LWG3231>`__","``year_month_day_last::day``\  specification does not cover ``!ok()``\  values","Belfast","|Nothing To Do|",""
 165 "`3225 <https://wg21.link/LWG3225>`__","``zoned_time``\  converting constructor shall not be ``noexcept``\ ","Belfast","","","|chrono|"
 166 "`3190 <https://wg21.link/LWG3190>`__","``std::allocator::allocate``\  sometimes returns too little storage","Belfast","|Complete|","14.0"
 167 "`3218 <https://wg21.link/LWG3218>`__","Modifier for ``%d``\  parse flag does not match POSIX and ``format``\  specification","Belfast","","","|chrono| |format|"
 168 "`3224 <https://wg21.link/LWG3224>`__","``zoned_time``\  constructor from ``TimeZonePtr``\  does not specify initialization of ``tp_``\ ","Belfast","","","|chrono|"
 169 "`3230 <https://wg21.link/LWG3230>`__","Format specifier ``%y/%Y``\  is missing locale alternative versions","Belfast","|Complete|","16.0","|chrono| |format|"
 170 "`3232 <https://wg21.link/LWG3232>`__","Inconsistency in ``zoned_time``\  deduction guides","Belfast","","","|chrono|"
 171 "`3222 <https://wg21.link/LWG3222>`__","P0574R1 introduced preconditions on non-existent parameters","Belfast","",""
 172 "`3221 <https://wg21.link/LWG3221>`__","Result of ``year_month``\  arithmetic with ``months``\  is ambiguous","Belfast","|Complete|","8.0"
 173 "`3235 <https://wg21.link/LWG3235>`__","``parse``\  manipulator without abbreviation is not callable","Belfast","",""
 174 "`3246 <https://wg21.link/LWG3246>`__","What are the constraints on the template parameter of ``basic_format_arg``\ ?","Belfast","","","|format|"
 175 "`3253 <https://wg21.link/LWG3253>`__","``basic_syncbuf::basic_syncbuf()``\  should not be explicit","Belfast","",""
 176 "`3245 <https://wg21.link/LWG3245>`__","Unnecessary restriction on ``'%p'``\  parse specifier","Belfast","","","|chrono|"
 177 "`3244 <https://wg21.link/LWG3244>`__","Constraints for ``Source``\  in |sect|\ [fs.path.req] insufficiently constrainty","Belfast","",""
 178 "`3241 <https://wg21.link/LWG3241>`__","``chrono-spec``\  grammar ambiguity in |sect|\ [time.format]","Belfast","|Complete|","16.0","|chrono| |format|"
 179 "`3257 <https://wg21.link/LWG3257>`__","Missing feature testing macro update from P0858","Belfast","",""
 180 "`3256 <https://wg21.link/LWG3256>`__","Feature testing macro for ``constexpr``\  algorithms","Belfast","|Complete|","13.0"
 181 "`3273 <https://wg21.link/LWG3273>`__","Specify ``weekday_indexed``\  to range of ``[0, 7]``\ ","Belfast","|Complete|","16.0","|chrono|"
 182 "`3070 <https://wg21.link/LWG3070>`__","``path::lexically_relative``\  causes surprising results if a filename can also be a  *root-name*","Belfast","",""
 183 "`3266 <https://wg21.link/LWG3266>`__","``to_chars(bool)``\  should be deleted","Belfast","|Complete|","14.0"
 184 "`3272 <https://wg21.link/LWG3272>`__","``%I%p``\  should parse/format ``duration``\  since midnight","Belfast","","","|chrono| |format|"
 185 "`3259 <https://wg21.link/LWG3259>`__","The definition of *constexpr iterators* should be adjusted","Belfast","|Nothing To Do|",""
 186 "`3103 <https://wg21.link/LWG3103>`__","Errors in taking subview of ``span``\  should be ill-formed where possible","Belfast","|Complete|","11.0"
 187 "`3274 <https://wg21.link/LWG3274>`__","Missing feature test macro for ``<span>``\ ","Belfast","|Complete|","11.0"
 188 "`3276 <https://wg21.link/LWG3276>`__","Class ``split_view::outer_iterator::value_type``\  should inherit from ``view_interface``\ ","Belfast","|Complete|","15.0","|ranges|"
 189 "`3277 <https://wg21.link/LWG3277>`__","Pre-increment on prvalues is not a requirement of ``weakly_incrementable``\ ","Belfast","|Nothing To Do|","","|ranges|"
 190 "`3149 <https://wg21.link/LWG3149>`__","``DefaultConstructible``\  should require default initialization","Belfast","|Complete|","13.0"
 191 "","","","","",""
 192 "`1203 <https://wg21.link/LWG1203>`__","More useful rvalue stream insertion","Prague","|Complete|","12.0"
 193 "`2859 <https://wg21.link/LWG2859>`__","Definition of *reachable* in [ptr.launder] misses pointer arithmetic from pointer-interconvertible object","Prague","",""
 194 "`3018 <https://wg21.link/LWG3018>`__","``shared_ptr``\  of function type","Prague","",""
 195 "`3050 <https://wg21.link/LWG3050>`__","Conversion specification problem in ``chrono::duration``\  constructor","Prague","","","|chrono|"
 196 "`3141 <https://wg21.link/LWG3141>`__","``CopyConstructible``\  doesn't preserve source values","Prague","|Nothing to do|",""
 197 "`3150 <https://wg21.link/LWG3150>`__","``UniformRandomBitGenerator``\  should validate ``min``\  and ``max``\ ","Prague","|Complete|","13.0","|ranges|"
 198 "`3175 <https://wg21.link/LWG3175>`__","The ``CommonReference``\  requirement of concept ``SwappableWith``\  is not satisfied in the example","Prague","|Complete|","13.0"
 199 "`3194 <https://wg21.link/LWG3194>`__","``ConvertibleTo``\  prose does not match code","Prague","|Complete|","13.0"
 200 "`3200 <https://wg21.link/LWG3200>`__","``midpoint``\  should not constrain ``T``\  is complete","Prague","|Nothing To Do|",""
 201 "`3201 <https://wg21.link/LWG3201>`__","``lerp``\  should be marked as ``noexcept``\ ","Prague","|Complete|",""
 202 "`3226 <https://wg21.link/LWG3226>`__","``zoned_time``\  constructor from ``string_view``\  should accept ``zoned_time<Duration2, TimeZonePtr2>``\ ","Prague","","","|chrono|"
 203 "`3233 <https://wg21.link/LWG3233>`__","Broken requirements for ``shared_ptr``\  converting constructors","Prague","",""
 204 "`3237 <https://wg21.link/LWG3237>`__","LWG 3038 and 3190 have inconsistent PRs","Prague","|Complete|","16.0"
 205 "`3238 <https://wg21.link/LWG3238>`__","Insufficiently-defined behavior of ``std::function``\  deduction guides","Prague","",""
 206 "`3242 <https://wg21.link/LWG3242>`__","``std::format``\ : missing rules for ``arg-id``\  in ``width``\  and ``precision``\ ","Prague","|Complete|","14.0","|format|"
 207 "`3243 <https://wg21.link/LWG3243>`__","``std::format``\  and negative zeroes","Prague","|Complete|","14.0","|format|"
 208 "`3247 <https://wg21.link/LWG3247>`__","``ranges::iter_move``\  should perform ADL-only lookup of ``iter_move``\ ","Prague","|Complete|","15.0","|ranges|"
 209 "`3248 <https://wg21.link/LWG3248>`__","``std::format``\  ``#b``\ , ``#B``\ , ``#o``\ , ``#x``\ , and ``#X``\   presentation types misformat negative numbers","Prague","|Complete|","14.0","|format|"
 210 "`3250 <https://wg21.link/LWG3250>`__","``std::format``\ : ``#``\  (alternate form) for NaN and inf","Prague","|Complete|","14.0","|format|"
 211 "`3251 <https://wg21.link/LWG3251>`__","Are ``std::format``\  alignment specifiers applied to string arguments?","Prague","|Complete|","14.0","|format|"
 212 "`3252 <https://wg21.link/LWG3252>`__","Parse locale's aware modifiers for commands are not consistent with POSIX spec","Prague","","","|chrono|"
 213 "`3254 <https://wg21.link/LWG3254>`__","Strike ``stop_token``\ 's ``operator!=``\ ","Prague","|Complete|","17.0"
 214 "`3255 <https://wg21.link/LWG3255>`__","``span``\ 's ``array``\  constructor is too strict","Prague","|Complete|",""
 215 "`3260 <https://wg21.link/LWG3260>`__","``year_month*``\  arithmetic rejects durations convertible to years","Prague","","","|chrono|"
 216 "`3262 <https://wg21.link/LWG3262>`__","Formatting of negative durations is not specified","Prague","|Complete|","16.0","|chrono| |format|"
 217 "`3264 <https://wg21.link/LWG3264>`__","``sized_range``\  and ``ranges::size``\  redundantly use ``disable_sized_range``\ ","Prague","|Complete|","15.0","|ranges|"
 218 "`3269 <https://wg21.link/LWG3269>`__","Parse manipulators do not specify the result of the extraction from stream","Prague","","","|chrono|"
 219 "`3270 <https://wg21.link/LWG3270>`__","Parsing and formatting ``%j``\  with ``duration``\ s","Prague","|Partial|","","|chrono| |format|"
 220 "`3280 <https://wg21.link/LWG3280>`__","View converting constructors can cause constraint recursion and are unneeded","Prague","|Complete|","15.0","|ranges|"
 221 "`3281 <https://wg21.link/LWG3281>`__","Conversion from ``*pair-like*``\  types to ``subrange``\  is a silent semantic promotion","Prague","|Complete|","15.0","|ranges|"
 222 "`3282 <https://wg21.link/LWG3282>`__","``subrange``\  converting constructor should disallow derived to base conversions","Prague","|Complete|","15.0","|ranges|"
 223 "`3284 <https://wg21.link/LWG3284>`__","``random_access_iterator``\  semantic constraints accidentally promote difference type using unary negate","Prague","|Nothing To Do|","","|ranges|"
 224 "`3285 <https://wg21.link/LWG3285>`__","The type of a customization point object shall satisfy ``semiregular``\ ","Prague","|Nothing To Do|","","|ranges|"
 225 "`3286 <https://wg21.link/LWG3286>`__","``ranges::size``\  is not required to be valid after a call to ``ranges::begin``\  on an input range","Prague","|Complete|","15.0","|ranges|"
 226 "`3291 <https://wg21.link/LWG3291>`__","``iota_view::iterator``\  has the wrong ``iterator_category``\ ","Prague","|Complete|","15.0","|ranges|"
 227 "`3292 <https://wg21.link/LWG3292>`__","``iota_view``\  is under-constrained","Prague","|Complete|","15.0","|ranges|"
 228 "`3294 <https://wg21.link/LWG3294>`__","``zoned_time``\  deduction guides misinterprets ``string``\ /``char*``\ ","Prague","","","|chrono|"
 229 "`3296 <https://wg21.link/LWG3296>`__","Inconsistent default argument for ``basic_regex<>::assign``\ ","Prague","|Complete|",""
 230 "`3299 <https://wg21.link/LWG3299>`__","Pointers don't need customized iterator behavior","Prague","|Complete|","15.0","|ranges|"
 231 "`3300 <https://wg21.link/LWG3300>`__","Non-array ``ssize``\  overload is underconstrained","Prague","|Nothing To Do|",""
 232 "`3301 <https://wg21.link/LWG3301>`__","``transform_view::iterator``\  has incorrect ``iterator_category``\ ","Prague","|Complete|","15.0","|ranges|"
 233 "`3302 <https://wg21.link/LWG3302>`__","Range adaptor objects ``keys``\  and ``values``\  are unspecified","Prague","|Complete|","16.0","|ranges|"
 234 "`3303 <https://wg21.link/LWG3303>`__","Bad ""``constexpr``\ "" marker for ``destroy/destroy_n``\ ","Prague","",""
 235 "`3304 <https://wg21.link/LWG3304>`__","Allocate functions of ``std::polymorphic_allocator``\  should require ``[[nodiscard]]``\ ","Prague","|Complete|","16.0"
 236 "`3307 <https://wg21.link/LWG3307>`__","``std::allocator<void>().allocate(n)``\ ","Prague","",""
 237 "`3310 <https://wg21.link/LWG3310>`__","Replace ``SIZE_MAX``\  with ``numeric_limits<size_t>::max()``\ ","Prague","|Complete|","16.0"
 238 "`3313 <https://wg21.link/LWG3313>`__","``join_view::iterator::operator--``\  is incorrectly constrained","Prague","|Complete|","14.0","|ranges|"
 239 "`3314 <https://wg21.link/LWG3314>`__","Is stream insertion behavior locale dependent when ``Period::type``\  is ``micro``\ ?","Prague","|Complete|","16.0","|chrono|"
 240 "`3315 <https://wg21.link/LWG3315>`__","Correct Allocator Default Behavior","Prague","",""
 241 "`3316 <https://wg21.link/LWG3316>`__","Correctly define epoch for ``utc_clock``\  / ``utc_timepoint``\ ","Prague","","","|chrono|"
 242 "`3317 <https://wg21.link/LWG3317>`__","Incorrect ``operator<<``\  for floating-point durations","Prague","","","|chrono|"
 243 "`3318 <https://wg21.link/LWG3318>`__","Clarify whether clocks can represent time before their epoch","Prague","","","|chrono|"
 244 "`3319 <https://wg21.link/LWG3319>`__","Properly reference specification of IANA time zone database","Prague","|Nothing To Do|","","|chrono|"
 245 "`3320 <https://wg21.link/LWG3320>`__","``span::cbegin/cend``\  methods produce different results than ``std::[ranges::]cbegin/cend``\ ","Prague","|Complete|",""
 246 "`3321 <https://wg21.link/LWG3321>`__","``uninitialized_construct_using_allocator``\  should use ``construct_at``\ ","Prague","|Complete|","16.0"
 247 "`3323 <https://wg21.link/LWG3323>`__","``*has-tuple-element*``\  helper concept needs ``convertible_to``\ ","Prague","|Complete|","16.0","|ranges|"
 248 "`3324 <https://wg21.link/LWG3324>`__","Special-case ``std::strong/weak/partial_order``\  for pointers","Prague","|Complete|","14.0","|spaceship|"
 249 "`3325 <https://wg21.link/LWG3325>`__","Constrain return type of transformation function for ``transform_view``\ ","Prague","|Complete|","15.0","|ranges|"
 250 "`3326 <https://wg21.link/LWG3326>`__","``enable_view``\  has false positives","Prague","|Complete|","15.0","|ranges|"
 251 "`3327 <https://wg21.link/LWG3327>`__","Format alignment specifiers vs. text direction","Prague","|Nothing To Do|","","|format|"
 252 "`3328 <https://wg21.link/LWG3328>`__","Clarify that ``std::string``\  is not good for UTF-8","Prague","",""
 253 "`3329 <https://wg21.link/LWG3329>`__","``totally_ordered_with``\  both directly and indirectly requires ``common_reference_with``\ ","Prague","|Complete|","13.0"
 254 "`3330 <https://wg21.link/LWG3330>`__","Include ``<compare>``\  from most library headers","Prague","|Complete|","13.0","|spaceship|"
 255 "`3331 <https://wg21.link/LWG3331>`__","Define ``totally_ordered/_with``\  in terms of ``partially-ordered-with``\ ","Prague","|Complete|","13.0"
 256 "`3332 <https://wg21.link/LWG3332>`__","Issue in |sect|\ [time.format]","Prague","|Complete|","16.0","|chrono| |format|"
 257 "`3334 <https://wg21.link/LWG3334>`__","``basic_osyncstream``\  move assignment and destruction calls ``basic_syncbuf::emit()``\  twice","Prague","",""
 258 "`3335 <https://wg21.link/LWG3335>`__","Resolve C++20 NB comments US 273 and GB 274","Prague","|Complete|","15.0","|ranges|"
 259 "`3338 <https://wg21.link/LWG3338>`__","Rename ``default_constructible``\  to ``default_initializable``\ ","Prague","|Complete|","13.0"
 260 "`3340 <https://wg21.link/LWG3340>`__","Formatting functions should throw on argument/format string mismatch in |sect|\ [format.functions]","Prague","|Complete|","14.0","|format|"
 261 "`3346 <https://wg21.link/LWG3346>`__","``pair``\  and ``tuple``\  copy and move constructor have backwards specification","Prague","",""
 262 "`3347 <https://wg21.link/LWG3347>`__","``std::pair<T, U>``\  now requires ``T``\  and ``U``\  to be less-than-comparable","Prague","|Complete|","17.0"
 263 "`3348 <https://wg21.link/LWG3348>`__","``__cpp_lib_unwrap_ref``\  in wrong header","Prague","|Complete|","12.0"
 264 "`3349 <https://wg21.link/LWG3349>`__","Missing ``__cpp_lib_constexpr_complex``\  for P0415R1","Prague","|Complete|","16.0"
 265 "`3350 <https://wg21.link/LWG3350>`__","Simplify return type of ``lexicographical_compare_three_way``\ ","Prague","|Complete|","17.0","|spaceship|"
 266 "`3351 <https://wg21.link/LWG3351>`__","``ranges::enable_safe_range``\  should not be constrained","Prague","|Complete|","15.0","|ranges|"
 267 "`3352 <https://wg21.link/LWG3352>`__","``strong_equality``\  isn't a thing","Prague","|Nothing To Do|","","|spaceship|"
 268 "`3354 <https://wg21.link/LWG3354>`__","``has_strong_structural_equality``\  has a meaningless definition","Prague","|Nothing To Do|","","|spaceship|"
 269 "`3355 <https://wg21.link/LWG3355>`__","The memory algorithms should support move-only input iterators introduced by P1207","Prague","|Complete|","15.0","|ranges|"
 270 "`3356 <https://wg21.link/LWG3356>`__","``__cpp_lib_nothrow_convertible``\  should be ``__cpp_lib_is_nothrow_convertible``\ ","Prague","|Complete|","12.0"
 271 "`3358 <https://wg21.link/LWG3358>`__","|sect|\ [span.cons] is mistaken that ``to_address``\  can throw","Prague","|Complete|","17.0"
 272 "`3359 <https://wg21.link/LWG3359>`__","``<chrono>``\  leap second support should allow for negative leap seconds","Prague","","","|chrono|"
 273 "`3360 <https://wg21.link/LWG3360>`__","``three_way_comparable_with``\  is inconsistent with similar concepts","Prague","|Nothing To Do|","","|spaceship|"
 274 "`3362 <https://wg21.link/LWG3362>`__","Strike ``stop_source``\ 's ``operator!=``\ ","Prague","",""
 275 "`3363 <https://wg21.link/LWG3363>`__","``drop_while_view``\  should opt-out of ``sized_range``\ ","Prague","|Nothing To Do|","","|ranges|"
 276 "`3364 <https://wg21.link/LWG3364>`__","Initialize data members of ranges and their iterators","Prague","|Complete|","16.0","|ranges|"
 277 "`3367 <https://wg21.link/LWG3367>`__","Integer-class conversions should not throw","Prague","|Nothing To Do|",""
 278 "`3369 <https://wg21.link/LWG3369>`__","``span``\ 's deduction-guide for built-in arrays doesn't work","Prague","|Complete|","14.0"
 279 "`3371 <https://wg21.link/LWG3371>`__","``visit_format_arg``\  and ``make_format_args``\  are not hidden friends","Prague","|Complete|","14.0","|format|"
 280 "`3372 <https://wg21.link/LWG3372>`__","``vformat_to``\  should not try to deduce ``Out``\  twice","Prague","|Complete|","14.0","|format|"
 281 "`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|"
 282 "`3374 <https://wg21.link/LWG3374>`__","P0653 + P1006 should have made the other ``std::to_address``\  overload ``constexpr``\ ","Prague","|Complete|","12.0"
 283 "`3375 <https://wg21.link/LWG3375>`__","``decay``\  in ``viewable_range``\  should be ``remove_cvref``\ ","Prague","|Complete|","15.0","|ranges|"
 284 "`3377 <https://wg21.link/LWG3377>`__","``elements_view::iterator``\  befriends a specialization of itself","Prague","|Nothing To Do|","","|ranges|"
 285 "`3379 <https://wg21.link/LWG3379>`__","""``safe``\ "" in several library names is misleading","Prague","|Complete|","15.0","|ranges|"
 286 "`3380 <https://wg21.link/LWG3380>`__","``common_type``\  and comparison categories","Prague","|Complete|","15.0","|spaceship|"
 287 "`3381 <https://wg21.link/LWG3381>`__","``begin``\  and ``data``\  must agree for ``contiguous_range``\ ","Prague","|Nothing To Do|","","|ranges|"
 288 "`3382 <https://wg21.link/LWG3382>`__","NTTP for ``pair``\  and ``array``\ ","Prague","",""
 289 "`3383 <https://wg21.link/LWG3383>`__","|sect|\ [time.zone.leap.nonmembers] ``sys_seconds``\  should be replaced with ``seconds``\ ","Prague","","","|chrono|"
 290 "`3384 <https://wg21.link/LWG3384>`__","``transform_view::*sentinel*``\  has an incorrect ``operator-``\ ","Prague","|Complete|","15.0","|ranges|"
 291 "`3385 <https://wg21.link/LWG3385>`__","``common_iterator``\  is not sufficiently constrained for non-copyable iterators","Prague","|Complete|","15.0","|ranges|"
 292 "`3387 <https://wg21.link/LWG3387>`__","|sect|\ [range.reverse.view] ``reverse_view<V>``\  unintentionally requires ``range<const V>``\ ","Prague","|Complete|","15.0","|ranges|"
 293 "`3388 <https://wg21.link/LWG3388>`__","``view``\  iterator types have ill-formed ``<=>``\  operators","Prague","|Complete|","16.0","|ranges|"
 294 "`3389 <https://wg21.link/LWG3389>`__","A move-only iterator still does not have a ``counted_iterator``\ ","Prague","|Complete|","15.0","|ranges|"
 295 "`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|"
 296 "`3393 <https://wg21.link/LWG3393>`__","Missing/incorrect feature test macro for coroutines","Prague","|Complete|","14.0"
 297 "`3395 <https://wg21.link/LWG3395>`__","Definition for three-way comparison needs to be updated (US 152)","Prague","","","|spaceship|"
 298 "`3396 <https://wg21.link/LWG3396>`__","Clarify point of reference for ``source_location::current()``\  (DE 169)","Prague","|Nothing To Do|","16.0"
 299 "`3397 <https://wg21.link/LWG3397>`__","``ranges::basic_istream_view::iterator``\  should not provide ``iterator_category``\ ","Prague","|Complete|","16.0","|ranges|"
 300 "`3398 <https://wg21.link/LWG3398>`__","``tuple_element_t``\  is also wrong for ``const subrange``\ ","Prague","|Complete|","14.0","|ranges|"
 301 "`3446 <https://wg21.link/LWG3446>`__","``indirectly_readable_traits``\  ambiguity for types with both ``value_type``\  and ``element_type``\ ","November virtual meeting","|Complete|","13.0","|ranges|"