"Issue #","Issue Name","Meeting","Status","First released version","Notes" "`LWG2070 `__","``allocate_shared``\ should use ``allocator_traits::construct``\ ","2017-07 (Toronto)","|Nothing To Do|","","Resolved by `P0674R1 `__" "`LWG2444 `__","Inconsistent complexity for ``std::sort_heap``\ ","2017-07 (Toronto)","|Nothing To Do|","","" "`LWG2593 `__","Moved-from state of Allocators","2017-07 (Toronto)","|Nothing To Do|","","" "`LWG2597 `__","``std::log``\ misspecified for complex numbers","2017-07 (Toronto)","","","" "`LWG2783 `__","``stack::emplace()``\ and ``queue::emplace()``\ should return ``decltype(auto)``\ ","2017-07 (Toronto)","|Complete|","","" "`LWG2932 `__","Constraints on parallel algorithm implementations are underspecified","2017-07 (Toronto)","","","" "`LWG2937 `__","Is ``equivalent(""existing_thing"", ""not_existing_thing"")``\ an error","2017-07 (Toronto)","|Complete|","","" "`LWG2940 `__","``result_of``\ specification also needs a little cleanup","2017-07 (Toronto)","|Nothing To Do|","","" "`LWG2942 `__","LWG 2873's resolution missed ``weak_ptr::owner_before``\ ","2017-07 (Toronto)","|Complete|","","" "`LWG2954 `__","Specialization of the convenience variable templates should be prohibited","2017-07 (Toronto)","|Complete|","","" "`LWG2961 `__","Bad postcondition for ``set_default_resource``\ ","2017-07 (Toronto)","|Complete|","16","" "`LWG2966 `__","Incomplete resolution of US 74","2017-07 (Toronto)","|Nothing To Do|","","" "`LWG2974 `__","Diagnose out of bounds ``tuple_element/variant_alternative``\ ","2017-07 (Toronto)","|Complete|","","" "","","","","","" "`LWG2779 `__","[networking.ts] Relax requirements on buffer sequence iterators","2017-11 (Albuquerque)","|Nothing To Do|","","" "`LWG2870 `__","Default value of parameter theta of polar should be dependent","2017-11 (Albuquerque)","|Complete|","","" "`LWG2935 `__","What should create_directories do when p already exists but is not a directory?","2017-11 (Albuquerque)","|Nothing To Do|","","" "`LWG2941 `__","[thread.req.timing] wording should apply to both member and namespace-level functions","2017-11 (Albuquerque)","|Nothing To Do|","","" "`LWG2944 `__","LWG 2905 accidentally removed requirement that construction of the deleter doesn't throw an exception","2017-11 (Albuquerque)","|Nothing To Do|","","" "`LWG2945 `__","Order of template parameters in optional comparisons","2017-11 (Albuquerque)","|Complete|","","" "`LWG2948 `__","unique_ptr does not define operator<< for stream output","2017-11 (Albuquerque)","|Complete|","","" "`LWG2950 `__","std::byte operations are misspecified","2017-11 (Albuquerque)","|Complete|","","" "`LWG2952 `__","iterator_traits should work for pointers to cv T","2017-11 (Albuquerque)","|Complete|","","" "`LWG2953 `__","LWG 2853 should apply to deque::erase too","2017-11 (Albuquerque)","|Complete|","","" "`LWG2958 `__","Moves improperly defined as deleted","2017-11 (Albuquerque)","|Complete|","","" "`LWG2964 `__","Apparently redundant requirement for dynamic_pointer_cast","2017-11 (Albuquerque)","","","" "`LWG2965 `__","Non-existing path::native_string() in filesystem_error::what() specification","2017-11 (Albuquerque)","|Nothing To Do|","","" "`LWG2972 `__","What is ``is_trivially_destructible_v``\ ?","2017-11 (Albuquerque)","|Complete|","","" "`LWG2976 `__","Dangling uses_allocator specialization for packaged_task","2017-11 (Albuquerque)","|Complete|","20","Originally implemented in LLVM 6 but reverted later. Old documentation incorrectly said it was implemented." "`LWG2977 `__","unordered_meow::merge() has incorrect Throws: clause","2017-11 (Albuquerque)","|Nothing To Do|","","" "`LWG2978 `__","Hash support for pmr::string and friends","2017-11 (Albuquerque)","|Complete|","16","" "`LWG2979 `__","aligned_union should require complete object types","2017-11 (Albuquerque)","|Complete|","","" "`LWG2980 `__","Cannot compare_exchange empty pointers","2017-11 (Albuquerque)","","","" "`LWG2981 `__","Remove redundant deduction guides from standard library","2017-11 (Albuquerque)","|Nothing To Do|","","" "`LWG2982 `__","Making size_type consistent in associative container deduction guides","2017-11 (Albuquerque)","","","" "`LWG2988 `__","Clause 32 cleanup missed one typename","2017-11 (Albuquerque)","|Complete|","13","" "`LWG2993 `__","reference_wrapper conversion from T&&","2017-11 (Albuquerque)","|Complete|","13","" "`LWG2998 `__","Requirements on function objects passed to {``forward_``,}list-specific algorithms","2017-11 (Albuquerque)","|Nothing To Do|","","" "`LWG3001 `__","weak_ptr::element_type needs remove_extent_t","2017-11 (Albuquerque)","|Complete|","14","" "`LWG3024 `__","variant's copies must be deleted instead of disabled via SFINAE","2017-11 (Albuquerque)","|Complete|","","" "","","","","","" "`LWG2164 `__","What are the semantics of ``vector.emplace(vector.begin(), vector.back())``\ ?","2018-03 (Jacksonville)","|Complete|","","" "`LWG2243 `__","``istream::putback``\ problem","2018-03 (Jacksonville)","|Complete|","","" "`LWG2816 `__","``resize_file``\ has impossible postcondition","2018-03 (Jacksonville)","|Nothing To Do|","","" "`LWG2843 `__","Unclear behavior of ``std::pmr::memory_resource::do_allocate()``\ ","2018-03 (Jacksonville)","|Complete|","","" "`LWG2849 `__","Why does ``!is_regular_file(from)``\ cause ``copy_file``\ to report a ""file already exists"" error?","2018-03 (Jacksonville)","|Nothing To Do|","","" "`LWG2851 `__","``std::filesystem``\ enum classes are now underspecified","2018-03 (Jacksonville)","|Nothing To Do|","","" "`LWG2946 `__","LWG 2758's resolution missed further corrections","2018-03 (Jacksonville)","|Complete|","","" "`LWG2969 `__","``polymorphic_allocator::construct()``\ shouldn't pass ``resource()``\ ","2018-03 (Jacksonville)","|Complete|","","" "`LWG2975 `__","Missing case for ``pair``\ construction in scoped and polymorphic allocators","2018-03 (Jacksonville)","","","" "`LWG2989 `__","``path``\ 's stream insertion operator lets you insert everything under the sun","2018-03 (Jacksonville)","|Complete|","","" "`LWG3000 `__","``monotonic_memory_resource::do_is_equal``\ uses ``dynamic_cast``\ unnecessarily","2018-03 (Jacksonville)","|Complete|","16","" "`LWG3002 `__","[networking.ts] ``basic_socket_acceptor::is_open()``\ isn't ``noexcept``\ ","2018-03 (Jacksonville)","|Nothing To Do|","","" "`LWG3004 `__","|sect|\ [string.capacity] and |sect|\ [vector.capacity] should specify time complexity for ``capacity()``\ ","2018-03 (Jacksonville)","|Nothing To Do|","","" "`LWG3005 `__","Destruction order of arrays by ``make_shared/allocate_shared``\ only recommended?","2018-03 (Jacksonville)","","","" "`LWG3007 `__","``allocate_shared``\ should rebind allocator to *cv*-unqualified ``value_type``\ for construction","2018-03 (Jacksonville)","","","" "`LWG3009 `__","Including ````\ doesn't provide ``std::size/empty/data``\ ","2018-03 (Jacksonville)","|Complete|","","" "`LWG3010 `__","[networking.ts] ``uses_executor``\ says ""if a type ``T::executor_type``\ exists""","2018-03 (Jacksonville)","|Nothing To Do|","","" "`LWG3013 `__","``(recursive_)directory_iterator``\ construction and traversal should not be ``noexcept``\ ","2018-03 (Jacksonville)","|Complete|","","" "`LWG3014 `__","More ``noexcept``\ issues with filesystem operations","2018-03 (Jacksonville)","|Complete|","","" "`LWG3015 `__","``copy_options::*unspecified*``\ underspecified","2018-03 (Jacksonville)","|Nothing To Do|","","" "`LWG3017 `__","``list splice``\ functions should use ``addressof``\ ","2018-03 (Jacksonville)","|Complete|","","" "`LWG3020 `__","[networking.ts] Remove spurious nested ``value_type``\ buffer sequence requirement","2018-03 (Jacksonville)","|Nothing To Do|","","" "`LWG3026 `__","``filesystem::weakly_canonical``\ still defined in terms of ``canonical(p, base)``\ ","2018-03 (Jacksonville)","|Complete|","","" "`LWG3030 `__","Who shall meet the requirements of ``try_lock``\ ?","2018-03 (Jacksonville)","|Nothing To Do|","","" "`LWG3034 `__","P0767R1 breaks previously-standard-layout types","2018-03 (Jacksonville)","|Complete|","","" "`LWG3035 `__","``std::allocator``\ 's constructors should be ``constexpr``\ ","2018-03 (Jacksonville)","|Complete|","","" "`LWG3039 `__","Unnecessary ``decay``\ in ``thread``\ and ``packaged_task``\ ","2018-03 (Jacksonville)","|Complete|","","" "`LWG3041 `__","Unnecessary ``decay``\ in ``reference_wrapper``\ ","2018-03 (Jacksonville)","|Complete|","","" "`LWG3042 `__","``is_literal_type_v``\ should be inline","2018-03 (Jacksonville)","|Complete|","","" "`LWG3043 `__","Bogus postcondition for ``filesystem_error``\ constructor","2018-03 (Jacksonville)","|Complete|","","" "`LWG3045 `__","``atomic``\ doesn't have ``value_type``\ or ``difference_type``\ ","2018-03 (Jacksonville)","|Complete|","18","" "`LWG3048 `__","``transform_reduce(exec, first1, last1, first2, init)``\ discards execution policy","2018-03 (Jacksonville)","|Complete|","17","" "`LWG3051 `__","Floating point classifications were inadvertently changed in P0175","2018-03 (Jacksonville)","|Nothing To Do|","","" "`LWG3075 `__","``basic_string``\ needs deduction guides from ``basic_string_view``\ ","2018-03 (Jacksonville)","|Complete|","","" "","","","","","" "`LWG2139 `__","What is a user-defined type?","2018-06 (Rapperswil)","","","" "`LWG2970 `__","Return type of std::visit misspecified","2018-06 (Rapperswil)","|Complete|","11","" "`LWG3058 `__","Parallel adjacent_difference shouldn't require creating temporaries","2018-06 (Rapperswil)","","","" "`LWG3062 `__","Unnecessary decay_t in is_execution_policy_v should be remove_cvref_t","2018-06 (Rapperswil)","|Complete|","17","" "`LWG3067 `__","recursive_directory_iterator::pop must invalidate","2018-06 (Rapperswil)","|Nothing To Do|","","" "`LWG3071 `__","[networking.ts] read_until still refers to ""input sequence""","2018-06 (Rapperswil)","|Nothing To Do|","","" "`LWG3074 `__","Non-member functions for valarray should only deduce from the valarray","2018-06 (Rapperswil)","","","" "`LWG3076 `__","basic_string CTAD ambiguity","2018-06 (Rapperswil)","|Complete|","","" "`LWG3079 `__","LWG 2935 forgot to fix the existing_p overloads of create_directory","2018-06 (Rapperswil)","|Nothing To Do|","","" "`LWG3080 `__","Floating point from_chars pattern specification breaks round-tripping","2018-06 (Rapperswil)","","","" "`LWG3083 `__","What should ios::iword(-1) do?","2018-06 (Rapperswil)","|Nothing To Do|","","" "`LWG3094 `__","[time.duration.io]p4 makes surprising claims about encoding","2018-06 (Rapperswil)","","","" "`LWG3100 `__","Unnecessary and confusing ""empty span"" wording","2018-06 (Rapperswil)","|Nothing To Do|","","" "`LWG3102 `__","Clarify span iterator and ``const_iterator`` behavior","2018-06 (Rapperswil)","|Complete|","","" "`LWG3104 `__","Fixing duration division","2018-06 (Rapperswil)","|Complete|","","" "","","","","","" "`LWG2183 `__","Muddled allocator requirements for ``match_results``\ constructors","2018-11 (San Diego)","|Complete|","","" "`LWG2184 `__","Muddled allocator requirements for ``match_results``\ assignments","2018-11 (San Diego)","|Complete|","","" "`LWG2412 `__","``promise::set_value()``\ and ``promise::get_future()``\ should not race","2018-11 (San Diego)","","","" "`LWG2499 `__","``operator>>(basic_istream&, CharT*)``\ makes it hard to avoid buffer overflows","2018-11 (San Diego)","|Nothing To Do|","","Resolved by `P0487R1 `__" "`LWG2682 `__","``filesystem::copy()``\ won't create a symlink to a directory","2018-11 (San Diego)","|Nothing To Do|","","" "`LWG2697 `__","[concurr.ts] Behavior of ``future/shared_future``\ unwrapping constructor when given an invalid ``future``\ ","2018-11 (San Diego)","","","" "`LWG2797 `__","Trait precondition violations","2018-11 (San Diego)","|Nothing To Do|","","Resolved by `P1285R0 `__" "`LWG2936 `__","Path comparison is defined in terms of the generic format","2018-11 (San Diego)","|Complete|","","" "`LWG2943 `__","Problematic specification of the wide version of ``basic_filebuf::open``\ ","2018-11 (San Diego)","|Nothing To Do|","","" "`LWG2960 `__","[fund.ts.v3] ``nonesuch``\ is insufficiently useless","2018-11 (San Diego)","|Complete|","","" "`LWG2995 `__","``basic_stringbuf``\ default constructor forbids it from using SSO capacity","2018-11 (San Diego)","|Complete|","20","" "`LWG2996 `__","Missing rvalue overloads for ``shared_ptr``\ operations","2018-11 (San Diego)","|Complete|","17","" "`LWG3008 `__","``make_shared``\ (sub)object destruction semantics are not specified","2018-11 (San Diego)","|Complete|","16","" "`LWG3022 `__","``is_convertible``\ may lead to ODR","2018-11 (San Diego)","|Nothing To Do|","","Resolved by `P1285R0 `__" "`LWG3025 `__","Map-like container deduction guides should use ``pair``\ , not ``pair``\ ","2018-11 (San Diego)","|Complete|","","" "`LWG3031 `__","Algorithms and predicates with non-const reference arguments","2018-11 (San Diego)","","","" "`LWG3037 `__","``polymorphic_allocator``\ and incomplete types","2018-11 (San Diego)","|Complete|","16","" "`LWG3038 `__","``polymorphic_allocator::allocate``\ should not allow integer overflow to create vulnerabilities","2018-11 (San Diego)","|Complete|","14","" "`LWG3054 `__","``uninitialized_copy``\ appears to not be able to meet its exception-safety guarantee","2018-11 (San Diego)","|Nothing To Do|","","" "`LWG3065 `__","LWG 2989 missed that all ``path``\ 's other operators should be hidden friends as well","2018-11 (San Diego)","|Complete|","","" "`LWG3096 `__","``path::lexically_relative``\ is confused by trailing slashes","2018-11 (San Diego)","|Complete|","","" "`LWG3116 `__","``OUTERMOST_ALLOC_TRAITS``\ needs ``remove_reference_t``\ ","2018-11 (San Diego)","","","" "`LWG3122 `__","``__cpp_lib_chrono_udls``\ was accidentally dropped","2018-11 (San Diego)","|Complete|","","" "`LWG3127 `__","``basic_osyncstream::rdbuf``\ needs a ``const_cast``\ ","2018-11 (San Diego)","|Complete|","18","" "`LWG3128 `__","``strstream::rdbuf``\ needs a ``const_cast``\ ","2018-11 (San Diego)","|Nothing To Do|","","" "`LWG3129 `__","``regex_token_iterator``\ constructor uses wrong pointer arithmetic","2018-11 (San Diego)","","","" "`LWG3130 `__","|sect|\ [input.output] needs many ``addressof``\ ","2018-11 (San Diego)","|Complete|","20","" "`LWG3131 `__","``addressof``\ all the things","2018-11 (San Diego)","","","" "`LWG3132 `__","Library needs to ban macros named ``expects``\ or ``ensures``\ ","2018-11 (San Diego)","|Nothing To Do|","","" "`LWG3134 `__","[fund.ts.v3] LFTSv3 contains extraneous [meta] variable templates that should have been deleted by P09961","2018-11 (San Diego)","|Nothing To Do|","","Resolved by `P1210R0 `__" "`LWG3137 `__","Header for ``__cpp_lib_to_chars``\ ","2018-11 (San Diego)","|Complete|","","" "`LWG3140 `__","``COMMON_REF``\ is unimplementable as specified","2018-11 (San Diego)","|Nothing To Do|","","" "`LWG3145 `__","``file_clock``\ breaks ABI for C++17 implementations","2018-11 (San Diego)","|Complete|","","" "`LWG3147 `__","Definitions of ""likely"" and ""unlikely"" are likely to cause problems","2018-11 (San Diego)","|Nothing To Do|","","" "`LWG3148 `__","````\ should be freestanding","2018-11 (San Diego)","","","" "`LWG3153 `__","``Common``\ and ``common_type``\ have too little in common","2018-11 (San Diego)","|Complete|","13","" "`LWG3154 `__","``Common``\ and ``CommonReference``\ have a common defect","2018-11 (San Diego)","|Nothing To Do|","","" "","","","","","" "`LWG3012 `__","``atomic``\ is unimplementable for non-``is_trivially_copy_constructible T``\ ","2019-02 (Kona)","","","" "`LWG3040 `__","``basic_string_view::starts_with``\ *Effects* are incorrect","2019-02 (Kona)","|Complete|","","" "`LWG3077 `__","``(push|emplace)_back``\ should invalidate the ``end``\ iterator","2019-02 (Kona)","|Nothing To Do|","","" "`LWG3087 `__","One final ``&x``\ in |sect|\ [list.ops]","2019-02 (Kona)","|Nothing To Do|","","" "`LWG3101 `__","``span``\ 's ``Container``\ constructors need another constraint","2019-02 (Kona)","|Complete|","","" "`LWG3112 `__","``system_error``\ and ``filesystem_error``\ constructors taking a ``string``\ may not be able to meet their postconditions","2019-02 (Kona)","|Nothing To Do|","","" "`LWG3119 `__","Program-definedness of closure types","2019-02 (Kona)","|Nothing To Do|","","" "`LWG3133 `__","Modernizing numeric type requirements","2019-02 (Kona)","","","" "`LWG3144 `__","``span``\ does not have a ``const_pointer``\ typedef","2019-02 (Kona)","|Complete|","","" "`LWG3173 `__","Enable CTAD for ``ref-view``\ ","2019-02 (Kona)","|Complete|","15","" "`LWG3179 `__","``subrange``\ should always model ``Range``\ ","2019-02 (Kona)","|Nothing To Do|","","" "`LWG3180 `__","Inconsistently named return type for ``ranges::minmax_element``\ ","2019-02 (Kona)","|Complete|","15","" "`LWG3182 `__","Specification of ``Same``\ could be clearer","2019-02 (Kona)","|Complete|","15","" "","","","","","" "`LWG2899 `__","``is_(nothrow_)move_constructible``\ and ``tuple``\ , ``optional``\ and ``unique_ptr``\ ","2019-07 (Cologne)","","","" "`LWG3055 `__","``path::operator+=(*single-character*)``\ misspecified","2019-07 (Cologne)","|Complete|","7","" "`LWG3158 `__","``tuple(allocator_arg_t, const Alloc&)``\ should be conditionally explicit","2019-07 (Cologne)","|Complete|","10","" "`LWG3169 `__","``ranges``\ permutation generators discard useful information","2019-07 (Cologne)","|Complete|","15","" "`LWG3183 `__","Normative permission to specialize Ranges variable templates","2019-07 (Cologne)","|Nothing To Do|","","" "`LWG3184 `__","Inconsistencies in ``bind_front``\ wording","2019-07 (Cologne)","|Complete|","13","" "`LWG3185 `__","Uses-allocator construction functions missing ``constexpr``\ and ``noexcept``\ ","2019-07 (Cologne)","|Complete|","16","" "`LWG3186 `__","``ranges``\ removal, partition, and ``partial_sort_copy``\ algorithms discard useful information","2019-07 (Cologne)","|Complete|","15","" "`LWG3187 `__","`P0591R4 `__ reverted DR 2586 fixes to ``scoped_allocator_adaptor::construct()``\ ","2019-07 (Cologne)","","","" "`LWG3191 `__","``std::ranges::shuffle``\ synopsis does not match algorithm definition","2019-07 (Cologne)","|Complete|","15","" "`LWG3196 `__","``std::optional``\ is ill-formed is ``T``\ is an array","2019-07 (Cologne)","|Complete|","","" "`LWG3198 `__","Bad constraint on ``std::span::span()``\ ","2019-07 (Cologne)","|Complete|","","" "`LWG3199 `__","``istream >> bitset<0>``\ fails","2019-07 (Cologne)","|Complete|","10","" "`LWG3202 `__","P0318R1 was supposed to be revised","2019-07 (Cologne)","|Complete|","","" "`LWG3206 `__","``year_month_day``\ conversion to ``sys_days``\ uses not-existing member function","2019-07 (Cologne)","|Complete|","","" "`LWG3208 `__","``Boolean``\ 's expression requirements are ordered inconsistently","2019-07 (Cologne)","|Nothing To Do|","","" "`LWG3209 `__","Expression in ``year::ok()``\ returns clause is ill-formed","2019-07 (Cologne)","|Complete|","","" "","","","","","" "`LWG3231 `__","``year_month_day_last::day``\ specification does not cover ``!ok()``\ values","2019-11 (Belfast)","|Nothing To Do|","","" "`LWG3225 `__","``zoned_time``\ converting constructor shall not be ``noexcept``\ ","2019-11 (Belfast)","|Complete|","19","" "`LWG3190 `__","``std::allocator::allocate``\ sometimes returns too little storage","2019-11 (Belfast)","|Complete|","14","" "`LWG3218 `__","Modifier for ``%d``\ parse flag does not match POSIX and ``format``\ specification","2019-11 (Belfast)","","","" "`LWG3224 `__","``zoned_time``\ constructor from ``TimeZonePtr``\ does not specify initialization of ``tp_``\ ","2019-11 (Belfast)","|Complete|","19","" "`LWG3230 `__","Format specifier ``%y/%Y``\ is missing locale alternative versions","2019-11 (Belfast)","|Complete|","16","" "`LWG3232 `__","Inconsistency in ``zoned_time``\ deduction guides","2019-11 (Belfast)","|Complete|","19","" "`LWG3222 `__","P0574R1 introduced preconditions on non-existent parameters","2019-11 (Belfast)","","","" "`LWG3221 `__","Result of ``year_month``\ arithmetic with ``months``\ is ambiguous","2019-11 (Belfast)","|Complete|","8","" "`LWG3235 `__","``parse``\ manipulator without abbreviation is not callable","2019-11 (Belfast)","","","" "`LWG3246 `__","LWG3246: What are the constraints on the template parameter of `basic_format_arg`?","2019-11 (Belfast)","|Nothing To Do|","","" "`LWG3253 `__","``basic_syncbuf::basic_syncbuf()``\ should not be explicit","2019-11 (Belfast)","|Complete|","20","" "`LWG3245 `__","Unnecessary restriction on ``'%p'``\ parse specifier","2019-11 (Belfast)","","","" "`LWG3244 `__","Constraints for ``Source``\ in |sect|\ [fs.path.req] insufficiently constrainty","2019-11 (Belfast)","","","" "`LWG3241 `__","``chrono-spec``\ grammar ambiguity in |sect|\ [time.format]","2019-11 (Belfast)","|Complete|","16","" "`LWG3257 `__","Missing feature testing macro update from P0858","2019-11 (Belfast)","|Complete|","12","" "`LWG3256 `__","Feature testing macro for ``constexpr``\ algorithms","2019-11 (Belfast)","|Complete|","13","" "`LWG3273 `__","Specify ``weekday_indexed``\ to range of ``[0, 7]``\ ","2019-11 (Belfast)","|Complete|","16","" "`LWG3070 `__","``path::lexically_relative``\ causes surprising results if a filename can also be a *root-name*","2019-11 (Belfast)","","","" "`LWG3266 `__","``to_chars(bool)``\ should be deleted","2019-11 (Belfast)","|Complete|","14","" "`LWG3272 `__","``%I%p``\ should parse/format ``duration``\ since midnight","2019-11 (Belfast)","","","" "`LWG3259 `__","The definition of *constexpr iterators* should be adjusted","2019-11 (Belfast)","|Nothing To Do|","","" "`LWG3103 `__","Errors in taking subview of ``span``\ should be ill-formed where possible","2019-11 (Belfast)","|Complete|","11","" "`LWG3274 `__","Missing feature test macro for ````\ ","2019-11 (Belfast)","|Complete|","11","" "`LWG3276 `__","Class ``split_view::outer_iterator::value_type``\ should inherit from ``view_interface``\ ","2019-11 (Belfast)","|Complete|","15","" "`LWG3277 `__","Pre-increment on prvalues is not a requirement of ``weakly_incrementable``\ ","2019-11 (Belfast)","|Nothing To Do|","","" "`LWG3149 `__","``DefaultConstructible``\ should require default initialization","2019-11 (Belfast)","|Complete|","13","" "","","","","","" "`LWG1203 `__","More useful rvalue stream insertion","2020-02 (Prague)","|Complete|","12","" "`LWG2859 `__","Definition of *reachable* in [ptr.launder] misses pointer arithmetic from pointer-interconvertible object","2020-02 (Prague)","","","" "`LWG3018 `__","``shared_ptr``\ of function type","2020-02 (Prague)","|Nothing To Do|","","" "`LWG3050 `__","Conversion specification problem in ``chrono::duration``\ constructor","2020-02 (Prague)","|Complete|","19","" "`LWG3141 `__","``CopyConstructible``\ doesn't preserve source values","2020-02 (Prague)","|Nothing To Do|","","" "`LWG3150 `__","``UniformRandomBitGenerator``\ should validate ``min``\ and ``max``\ ","2020-02 (Prague)","|Complete|","13","" "`LWG3175 `__","The ``CommonReference``\ requirement of concept ``SwappableWith``\ is not satisfied in the example","2020-02 (Prague)","|Complete|","13","" "`LWG3194 `__","``ConvertibleTo``\ prose does not match code","2020-02 (Prague)","|Complete|","13","" "`LWG3200 `__","``midpoint``\ should not constrain ``T``\ is complete","2020-02 (Prague)","|Nothing To Do|","","" "`LWG3201 `__","``lerp``\ should be marked as ``noexcept``\ ","2020-02 (Prague)","|Complete|","","" "`LWG3226 `__","``zoned_time``\ constructor from ``string_view``\ should accept ``zoned_time``\ ","2020-02 (Prague)","|Complete|","19","" "`LWG3233 `__","Broken requirements for ``shared_ptr``\ converting constructors","2020-02 (Prague)","|Complete|","19","" "`LWG3237 `__","LWG 3038 and 3190 have inconsistent PRs","2020-02 (Prague)","|Complete|","16","" "`LWG3238 `__","Insufficiently-defined behavior of ``std::function``\ deduction guides","2020-02 (Prague)","|Nothing To Do|","","" "`LWG3242 `__","``std::format``\ : missing rules for ``arg-id``\ in ``width``\ and ``precision``\ ","2020-02 (Prague)","|Complete|","14","" "`LWG3243 `__","``std::format``\ and negative zeroes","2020-02 (Prague)","|Complete|","14","" "`LWG3247 `__","``ranges::iter_move``\ should perform ADL-only lookup of ``iter_move``\ ","2020-02 (Prague)","|Complete|","15","" "`LWG3248 `__","``std::format``\ ``#b``\ , ``#B``\ , ``#o``\ , ``#x``\ , and ``#X``\ presentation types misformat negative numbers","2020-02 (Prague)","|Complete|","14","" "`LWG3250 `__","``std::format``\ : ``#``\ (alternate form) for NaN and inf","2020-02 (Prague)","|Complete|","14","" "`LWG3251 `__","Are ``std::format``\ alignment specifiers applied to string arguments?","2020-02 (Prague)","|Complete|","14","" "`LWG3252 `__","Parse locale's aware modifiers for commands are not consistent with POSIX spec","2020-02 (Prague)","","","" "`LWG3254 `__","Strike ``stop_token``\ 's ``operator!=``\ ","2020-02 (Prague)","|Complete|","17","" "`LWG3255 `__","``span``\ 's ``array``\ constructor is too strict","2020-02 (Prague)","|Complete|","","" "`LWG3260 `__","``year_month*``\ arithmetic rejects durations convertible to years","2020-02 (Prague)","","","" "`LWG3262 `__","Formatting of negative durations is not specified","2020-02 (Prague)","|Complete|","16","" "`LWG3264 `__","``sized_range``\ and ``ranges::size``\ redundantly use ``disable_sized_range``\ ","2020-02 (Prague)","|Complete|","15","" "`LWG3269 `__","Parse manipulators do not specify the result of the extraction from stream","2020-02 (Prague)","","","" "`LWG3270 `__","Parsing and formatting ``%j``\ with ``duration``\ s","2020-02 (Prague)","|Partial|","","" "`LWG3280 `__","View converting constructors can cause constraint recursion and are unneeded","2020-02 (Prague)","|Complete|","15","" "`LWG3281 `__","Conversion from ``*pair-like*``\ types to ``subrange``\ is a silent semantic promotion","2020-02 (Prague)","|Complete|","13","" "`LWG3282 `__","``subrange``\ converting constructor should disallow derived to base conversions","2020-02 (Prague)","|Complete|","15","" "`LWG3284 `__","``random_access_iterator``\ semantic constraints accidentally promote difference type using unary negate","2020-02 (Prague)","|Nothing To Do|","","" "`LWG3285 `__","The type of a customization point object shall satisfy ``semiregular``\ ","2020-02 (Prague)","|Nothing To Do|","","" "`LWG3286 `__","``ranges::size``\ is not required to be valid after a call to ``ranges::begin``\ on an input range","2020-02 (Prague)","|Complete|","15","" "`LWG3291 `__","``iota_view::iterator``\ has the wrong ``iterator_category``\ ","2020-02 (Prague)","|Complete|","15","" "`LWG3292 `__","``iota_view``\ is under-constrained","2020-02 (Prague)","|Complete|","15","" "`LWG3294 `__","``zoned_time``\ deduction guides misinterprets ``string``\ /``char*``\ ","2020-02 (Prague)","|Complete|","19","" "`LWG3296 `__","Inconsistent default argument for ``basic_regex<>::assign``\ ","2020-02 (Prague)","|Complete|","","" "`LWG3299 `__","Pointers don't need customized iterator behavior","2020-02 (Prague)","|Complete|","15","" "`LWG3300 `__","Non-array ``ssize``\ overload is underconstrained","2020-02 (Prague)","|Nothing To Do|","","" "`LWG3301 `__","``transform_view::iterator``\ has incorrect ``iterator_category``\ ","2020-02 (Prague)","|Complete|","15","" "`LWG3302 `__","Range adaptor objects ``keys``\ and ``values``\ are unspecified","2020-02 (Prague)","|Complete|","16","" "`LWG3303 `__","Bad ""``constexpr``\ "" marker for ``destroy/destroy_n``\ ","2020-02 (Prague)","","","" "`LWG3304 `__","Allocate functions of ``std::polymorphic_allocator``\ should require ``[[nodiscard]]``\ ","2020-02 (Prague)","|Complete|","16","" "`LWG3307 `__","``std::allocator().allocate(n)``\ ","2020-02 (Prague)","|Complete|","20","" "`LWG3310 `__","Replace ``SIZE_MAX``\ with ``numeric_limits::max()``\ ","2020-02 (Prague)","|Complete|","16","" "`LWG3313 `__","``join_view::iterator::operator--``\ is incorrectly constrained","2020-02 (Prague)","|Complete|","14","" "`LWG3314 `__","Is stream insertion behavior locale dependent when ``Period::type``\ is ``micro``\ ?","2020-02 (Prague)","|Complete|","16","" "`LWG3315 `__","Correct Allocator Default Behavior","2020-02 (Prague)","|Complete|","","" "`LWG3316 `__","Correctly define epoch for ``utc_clock``\ / ``utc_timepoint``\ ","2020-02 (Prague)","","","" "`LWG3317 `__","Incorrect ``operator<<``\ for floating-point durations","2020-02 (Prague)","|Complete|","16","" "`LWG3318 `__","Clarify whether clocks can represent time before their epoch","2020-02 (Prague)","","","" "`LWG3319 `__","Properly reference specification of IANA time zone database","2020-02 (Prague)","|Nothing To Do|","","" "`LWG3320 `__","``span::cbegin/cend``\ methods produce different results than ``std::[ranges::]cbegin/cend``\ ","2020-02 (Prague)","|Complete|","","" "`LWG3321 `__","``uninitialized_construct_using_allocator``\ should use ``construct_at``\ ","2020-02 (Prague)","|Complete|","16","" "`LWG3323 `__","``*has-tuple-element*``\ helper concept needs ``convertible_to``\ ","2020-02 (Prague)","|Complete|","16","" "`LWG3324 `__","Special-case ``std::strong/weak/partial_order``\ for pointers","2020-02 (Prague)","|Complete|","14","" "`LWG3325 `__","Constrain return type of transformation function for ``transform_view``\ ","2020-02 (Prague)","|Complete|","15","" "`LWG3326 `__","``enable_view``\ has false positives","2020-02 (Prague)","|Complete|","15","" "`LWG3327 `__","Format alignment specifiers vs. text direction","2020-02 (Prague)","|Nothing To Do|","","" "`LWG3328 `__","Clarify that ``std::string``\ is not good for UTF-8","2020-02 (Prague)","|Nothing To Do|","","" "`LWG3329 `__","``totally_ordered_with``\ both directly and indirectly requires ``common_reference_with``\ ","2020-02 (Prague)","|Complete|","13","" "`LWG3330 `__","Include ````\ from most library headers","2020-02 (Prague)","|Complete|","13","" "`LWG3331 `__","Define ``totally_ordered/_with``\ in terms of ``partially-ordered-with``\ ","2020-02 (Prague)","|Complete|","13","" "`LWG3332 `__","Issue in |sect|\ [time.format]","2020-02 (Prague)","|Complete|","16","" "`LWG3334 `__","``basic_osyncstream``\ move assignment and destruction calls ``basic_syncbuf::emit()``\ twice","2020-02 (Prague)","|Complete|","18","" "`LWG3335 `__","Resolve C++20 NB comments US 273 and GB 274","2020-02 (Prague)","|Complete|","15","" "`LWG3338 `__","Rename ``default_constructible``\ to ``default_initializable``\ ","2020-02 (Prague)","|Complete|","13","" "`LWG3340 `__","Formatting functions should throw on argument/format string mismatch in |sect|\ [format.functions]","2020-02 (Prague)","|Complete|","14","" "`LWG3346 `__","``pair``\ and ``tuple``\ copy and move constructor have backwards specification","2020-02 (Prague)","|Nothing To Do|","","" "`LWG3347 `__","``std::pair``\ now requires ``T``\ and ``U``\ to be less-than-comparable","2020-02 (Prague)","|Complete|","17","" "`LWG3348 `__","``__cpp_lib_unwrap_ref``\ in wrong header","2020-02 (Prague)","|Complete|","12","" "`LWG3349 `__","Missing ``__cpp_lib_constexpr_complex``\ for P0415R1","2020-02 (Prague)","|Complete|","16","" "`LWG3350 `__","Simplify return type of ``lexicographical_compare_three_way``\ ","2020-02 (Prague)","|Complete|","17","" "`LWG3351 `__","``ranges::enable_safe_range``\ should not be constrained","2020-02 (Prague)","|Complete|","15","" "`LWG3352 `__","``strong_equality``\ isn't a thing","2020-02 (Prague)","|Complete|","19","" "`LWG3354 `__","``has_strong_structural_equality``\ has a meaningless definition","2020-02 (Prague)","|Nothing To Do|","","" "`LWG3355 `__","The memory algorithms should support move-only input iterators introduced by P1207","2020-02 (Prague)","|Complete|","15","" "`LWG3356 `__","``__cpp_lib_nothrow_convertible``\ should be ``__cpp_lib_is_nothrow_convertible``\ ","2020-02 (Prague)","|Complete|","12","" "`LWG3358 `__","|sect|\ [span.cons] is mistaken that ``to_address``\ can throw","2020-02 (Prague)","|Complete|","17","" "`LWG3359 `__","````\ leap second support should allow for negative leap seconds","2020-02 (Prague)","|Complete|","21","" "`LWG3360 `__","``three_way_comparable_with``\ is inconsistent with similar concepts","2020-02 (Prague)","|Nothing To Do|","","" "`LWG3362 `__","Strike ``stop_source``\ 's ``operator!=``\ ","2020-02 (Prague)","|Complete|","17","" "`LWG3363 `__","``drop_while_view``\ should opt-out of ``sized_range``\ ","2020-02 (Prague)","|Nothing To Do|","","" "`LWG3364 `__","Initialize data members of ranges and their iterators","2020-02 (Prague)","|Complete|","16","" "`LWG3367 `__","Integer-class conversions should not throw","2020-02 (Prague)","|Nothing To Do|","","" "`LWG3369 `__","``span``\ 's deduction-guide for built-in arrays doesn't work","2020-02 (Prague)","|Complete|","14","" "`LWG3371 `__","``visit_format_arg``\ and ``make_format_args``\ are not hidden friends","2020-02 (Prague)","|Complete|","14","" "`LWG3372 `__","``vformat_to``\ should not try to deduce ``Out``\ twice","2020-02 (Prague)","|Complete|","14","" "`LWG3373 `__","``{to,from}_chars_result``\ and ``format_to_n_result``\ need the ""we really mean what we say"" wording","2020-02 (Prague)","|Complete|","14","" "`LWG3374 `__","P0653 + P1006 should have made the other ``std::to_address``\ overload ``constexpr``\ ","2020-02 (Prague)","|Complete|","12","" "`LWG3375 `__","``decay``\ in ``viewable_range``\ should be ``remove_cvref``\ ","2020-02 (Prague)","|Complete|","15","" "`LWG3377 `__","``elements_view::iterator``\ befriends a specialization of itself","2020-02 (Prague)","|Nothing To Do|","","" "`LWG3379 `__","""``safe``\ "" in several library names is misleading","2020-02 (Prague)","|Complete|","15","" "`LWG3380 `__","``common_type``\ and comparison categories","2020-02 (Prague)","|Complete|","15","" "`LWG3381 `__","``begin``\ and ``data``\ must agree for ``contiguous_range``\ ","2020-02 (Prague)","|Nothing To Do|","","" "`LWG3382 `__","NTTP for ``pair``\ and ``array``\ ","2020-02 (Prague)","|Nothing To Do|","","" "`LWG3383 `__","|sect|\ [time.zone.leap.nonmembers] ``sys_seconds``\ should be replaced with ``seconds``\ ","2020-02 (Prague)","|Complete|","19","" "`LWG3384 `__","``transform_view::*sentinel*``\ has an incorrect ``operator-``\ ","2020-02 (Prague)","|Complete|","15","" "`LWG3385 `__","``common_iterator``\ is not sufficiently constrained for non-copyable iterators","2020-02 (Prague)","|Complete|","15","" "`LWG3387 `__","|sect|\ [range.reverse.view] ``reverse_view``\ unintentionally requires ``range``\ ","2020-02 (Prague)","|Complete|","15","" "`LWG3388 `__","``view``\ iterator types have ill-formed ``<=>``\ operators","2020-02 (Prague)","|Complete|","16","" "`LWG3389 `__","A move-only iterator still does not have a ``counted_iterator``\ ","2020-02 (Prague)","|Complete|","15","" "`LWG3390 `__","``make_move_iterator()``\ cannot be used to construct a ``move_iterator``\ for a move-only iterator","2020-02 (Prague)","|Complete|","14","" "`LWG3393 `__","Missing/incorrect feature test macro for coroutines","2020-02 (Prague)","|Complete|","14","" "`LWG3395 `__","Definition for three-way comparison needs to be updated (US 152)","2020-02 (Prague)","|Nothing To Do|","","" "`LWG3396 `__","Clarify point of reference for ``source_location::current()``\ (DE 169)","2020-02 (Prague)","|Nothing To Do|","16","" "`LWG3397 `__","``ranges::basic_istream_view::iterator``\ should not provide ``iterator_category``\ ","2020-02 (Prague)","|Complete|","16","" "`LWG3398 `__","``tuple_element_t``\ is also wrong for ``const subrange``\ ","2020-02 (Prague)","|Complete|","14","" "","","","","","" "`LWG3446 `__","``indirectly_readable_traits``\ ambiguity for types with both ``value_type``\ and ``element_type``\ ","2020-11 (Virtual)","|Complete|","13",""