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LWG Table of Contents

Issue Status Section Title Proposed Resolution Priority Duplicates 1⁽ⁱ⁾ TC1 16.4.3.3 [using.linkage] C library linkage editing oversight Yes 2⁽ⁱ⁾ NAD 99 [auto.ptr.conv] Auto_ptr conversions effects incorrect Yes 3⁽ⁱ⁾ TC1 17.5 [support.start.term] Atexit registration during atexit() call is not described Yes 4⁽ⁱ⁾ NAD 27.4.3 [basic.string] basic_string size_type and difference_type should be implementation defined Yes 5⁽ⁱ⁾ TC1 27.4.3.7.8 [string.swap] String::compare specification questionable Yes 87 6⁽ⁱ⁾ NAD 31.5.3 [fpos] File position not an offset unimplementable Yes 7⁽ⁱ⁾ TC1 27 [strings] String clause minor problems Yes 8⁽ⁱ⁾ TC1 28.3.3.1.6 [locale.statics] Locale::global lacks guarantee Yes 9⁽ⁱ⁾ TC1 17.6.3 [new.delete] Operator new(0) calls should not yield the same pointer Yes 10⁽ⁱ⁾ Dup 28.3.4.2.6 [locale.codecvt.byname] Codecvt<>::do unclear Yes 19 11⁽ⁱ⁾ TC1 22.9.2 [template.bitset] Bitset minor problems Yes 12⁽ⁱ⁾ NAD 16.4.4.6 [allocator.requirements] Way objects hold allocators unclear Yes 13⁽ⁱ⁾ TC1 31.7.5.3.3 [istream.extractors] Eos refuses to die Yes 14⁽ⁱ⁾ TC1 28.3.3.1.4 [locale.members] Locale::combine should be const Yes 15⁽ⁱ⁾ TC1 28.3.3.1.4 [locale.members] Locale::name requirement inconsistent Yes 16⁽ⁱ⁾ TC1 28.3.4.2.5 [locale.codecvt] Bad ctype_byname<char> decl Yes 17⁽ⁱ⁾ TC1 28.3.4.3.2.3 [facet.num.get.virtuals] Bad bool parsing Yes 18⁽ⁱ⁾ TC1 28.3.4.3.2.2 [facet.num.get.members] Get(...bool&) omitted Yes 19⁽ⁱ⁾ TC1 28.3.4.2.5 [locale.codecvt] "Noconv" definition too vague Yes 10 20⁽ⁱ⁾ TC1 28.3.4.4.1.3 [facet.numpunct.virtuals] Thousands_sep returns wrong type Yes 21⁽ⁱ⁾ TC1 28.3.3.1.2.1 [locale.category] Codecvt_byname<> instantiations Yes 22⁽ⁱ⁾ TC1 31.10.4.4 [ifstream.members] Member open vs. flags Yes 23⁽ⁱ⁾ CD1 28.3.4.3.2.3 [facet.num.get.virtuals] Num_get overflow result Yes 24⁽ⁱ⁾ TC1 28.3.4.2.5 [locale.codecvt] "do_convert" doesn't exist Yes 72 25⁽ⁱ⁾ TC1 27.4.4.4 [string.io] String operator<< uses width() value wrong Yes 67 26⁽ⁱ⁾ TC1 31.7.5.2.4 [istream.sentry] Bad sentry example Yes 27⁽ⁱ⁾ TC1 27.4.3.7.5 [string.erase] String::erase(range) yields wrong iterator Yes 28⁽ⁱ⁾ TC1 28.3.4.2.4.3 [facet.ctype.char.members] Ctype<char>is ambiguous Yes 236 29⁽ⁱ⁾ TC1 31.4.3 [narrow.stream.objects] Ios_base::init doesn't exist Yes 30⁽ⁱ⁾ TC1 28.3.3.1.2.1 [locale.category] Wrong header for LC_* Yes 31⁽ⁱ⁾ TC1 28.3.3.1 [locale] Immutable locale values Yes 378 32⁽ⁱ⁾ TC1 31.6.3.5.4 [streambuf.virt.pback] Pbackfail description inconsistent Yes 33⁽ⁱ⁾ TC1 28.3.4.2.5 [locale.codecvt] Codecvt<> mentions from_type Yes 43 34⁽ⁱ⁾ TC1 28.3.4.3.3.3 [facet.num.put.virtuals] True/falsename() not in ctype<> Yes 35⁽ⁱ⁾ TC1 31.5 [iostreams.base] No manipulator unitbuf in synopsis Yes 36⁽ⁱ⁾ TC1 31.5.2.6 [ios.base.storage] Iword & pword storage lifetime omitted Yes 37⁽ⁱ⁾ TC1 28.3.3.1 [locale] Leftover "global" reference Yes 38⁽ⁱ⁾ TC1 28.3.3.2 [locale.global.templates] Facet definition incomplete Yes 39⁽ⁱ⁾ TC1 24.6.4.4 [istreambuf.iterator.ops] istreambuf_iterator<>::operator++(int) definition garbled Yes 40⁽ⁱ⁾ TC1 99 [facets.examples] Meaningless normative paragraph in examples Yes 41⁽ⁱ⁾ TC1 31.5.2 [ios.base] Ios_base needs clear(), exceptions() Yes 157 42⁽ⁱ⁾ TC1 27.4.3 [basic.string] String ctors specify wrong default allocator Yes 43⁽ⁱ⁾ Dup 28.3.4.2.6 [locale.codecvt.byname] Locale table correction Yes 33 44⁽ⁱ⁾ CD1 31 [input.output] Iostreams use operator== on int_type values Yes 45⁽ⁱ⁾ NAD 31.8.4 [ostringstream] Stringstreams read/write pointers initial position unclear Yes 46⁽ⁱ⁾ TC1 99 [depr.str.strstreams] Minor Annex D errors Yes 47⁽ⁱ⁾ TC1 31.5.2.4 [ios.base.locales] Imbue() and getloc() Returns clauses swapped Yes 48⁽ⁱ⁾ TC1 31.5.2.2.1 [ios.failure] Use of non-existent exception constructor Yes 49⁽ⁱ⁾ CD1 31.5.2.5 [ios.members.static] Underspecification of ios_base::sync_with_stdio Yes 50⁽ⁱ⁾ TC1 31.5.2 [ios.base] Copy constructor and assignment operator of ios_base Yes 51⁽ⁱ⁾ TC1 23.2 [container.requirements] Requirement to not invalidate iterators missing Yes 52⁽ⁱ⁾ TC1 31.5.3.3 [fpos.operations] Small I/O problems Yes 53⁽ⁱ⁾ TC1 31.5.4.2 [basic.ios.cons] Basic_ios destructor unspecified Yes 54⁽ⁱ⁾ TC1 31.6.3.2 [streambuf.cons] Basic_streambuf's destructor Yes 55⁽ⁱ⁾ TC1 31 [input.output] Invalid stream position is undefined Yes 56⁽ⁱ⁾ TC1 31.6.3 [streambuf] Showmanyc's return type Yes 57⁽ⁱ⁾ TC1 27.2.4.6 [char.traits.specializations.wchar.t] Mistake in char_traits Yes 58⁽ⁱ⁾ NAD 31.7.5.3.3 [istream.extractors] Extracting a char from a wide-oriented stream Yes 59⁽ⁱ⁾ TC1 31.6.3.4.2 [streambuf.get.area] Ambiguity in specification of gbump Yes 60⁽ⁱ⁾ TC1 31.7.5.3.1 [istream.formatted.reqmts] What is a formatted input function? Yes 162, 163, 166 61⁽ⁱ⁾ TC1 31.7.5.4 [istream.unformatted] Ambiguity in iostreams exception policy Yes 62⁽ⁱ⁾ TC1 31.7.5.4 [istream.unformatted] Sync's return value Yes 63⁽ⁱ⁾ TC1 31.7.6.4 [ostream.unformatted] Exception-handling policy for unformatted output Yes 64⁽ⁱ⁾ TC1 31.7.5.3.3 [istream.extractors] Exception handling in basic_istream::operator>>(basic_streambuf*) Yes 65⁽ⁱ⁾ NAD 99 [depr.strstreambuf.virtuals] Underspecification of strstreambuf::seekoff Yes 66⁽ⁱ⁾ TC1 99 [depr.strstreambuf.virtuals] Strstreambuf::setbuf Yes 67⁽ⁱ⁾ Dup 27.4.4.4 [string.io] Setw useless for strings Yes 25 68⁽ⁱ⁾ TC1 31.7.5.3.3 [istream.extractors] Extractors for char* should store null at end Yes 69⁽ⁱ⁾ TC1 23.3.13 [vector] Must elements of a vector be contiguous? Yes 70⁽ⁱ⁾ TC1 17.9 [support.exception] Uncaught_exception() missing throw() specification Yes 71⁽ⁱ⁾ TC1 28.3.4.6.2 [locale.time.get] Do_get_monthname synopsis missing argument Yes 72⁽ⁱ⁾ Dup 28.3.4.2.5 [locale.codecvt] Do_convert phantom member function Yes 24 73⁽ⁱ⁾ NAD 31.10 [file.streams] is_open should be const Yes 74⁽ⁱ⁾ TC1 28.3.4.2.5 [locale.codecvt] Garbled text for codecvt::do_max_length Yes 75⁽ⁱ⁾ TC1 28.3.4.2.5 [locale.codecvt] Contradiction in codecvt::length's argument types Yes 76⁽ⁱ⁾ CD1 28.3.4.2.5 [locale.codecvt] Can a codecvt facet always convert one internal character at a time? Yes 77⁽ⁱ⁾ Dup 29.6.2.4 [valarray.access] Valarray operator[] const returning value Yes 389 78⁽ⁱ⁾ TC1 31.5.2 [ios.base] Typo: event_call_back Yes 79⁽ⁱ⁾ TC1 29.4.2 [complex.syn] Inconsistent declaration of polar() Yes 80⁽ⁱ⁾ TC1 29.4.2 [complex.syn] Global Operators of complex declared twice Yes 81⁽ⁱ⁾ NAD 29.6.5 [template.slice.array] Wrong declaration of slice operations Yes 82⁽ⁱ⁾ NAD 23.2.7 [associative.reqmts] Missing constant for set elements Yes 83⁽ⁱ⁾ TC1 27.4.3 [basic.string] String::npos vs. string::max_size() Yes 89 84⁽ⁱ⁾ NAD 27.4.3.6 [string.access] Ambiguity with string::insert() Yes 85⁽ⁱ⁾ NAD 27 [strings] String char types Yes 86⁽ⁱ⁾ TC1 27.4.3.2 [string.require] String constructors don't describe exceptions Yes 87⁽ⁱ⁾ Dup 27.4.3.7.8 [string.swap] Error in description of string::compare() Yes 5 88⁽ⁱ⁾ NAD 27.4.3.7.4 [string.insert] Inconsistency between string::insert() and string::append() Yes 89⁽ⁱ⁾ Dup 27.4.3.7.4 [string.insert] Missing throw specification for string::insert() and string::replace() Yes 83 90⁽ⁱ⁾ TC1 27.4.4.4 [string.io] Incorrect description of operator >> for strings Yes 91⁽ⁱ⁾ CD1 27.4.4.4 [string.io] Description of operator>> and getline() for string<> might cause endless loop Yes 92⁽ⁱ⁾ CD1 26 [algorithms] Incomplete Algorithm Requirements Yes 93⁽ⁱ⁾ NAD 29.6 [numarray] Incomplete Valarray Subset Definitions Yes 94⁽ⁱ⁾ NAD 16.4.6 [conforming] May library implementors add template parameters to Standard Library classes? Yes 95⁽ⁱ⁾ NAD 16.4.6.5 [member.functions] Members added by the implementation Yes 96⁽ⁱ⁾ NAD 23.3.13 [vector] Vector<bool> is not a container Yes 97⁽ⁱ⁾ NAD 23 [containers] Insert inconsistent definition Yes 98⁽ⁱ⁾ CD1 24.3.5.3 [input.iterators] Input iterator requirements are badly written Yes 99⁽ⁱ⁾ NAD 24.5.1.8 [reverse.iter.cmp] Reverse_iterator comparisons completely wrong Yes 100⁽ⁱ⁾ NAD 24.5.2 [insert.iterators] Insert iterators/ostream_iterators overconstrained Yes 101⁽ⁱ⁾ NAD Editorial 23.3.13 [vector] No way to free storage for vector and deque Yes 102⁽ⁱ⁾ Dup 23.2.7 [associative.reqmts] Bug in insert range in associative containers Yes 264 103⁽ⁱ⁾ CD1 23.2.7 [associative.reqmts] set::iterator is required to be modifiable, but this allows modification of keys Yes 104⁽ⁱ⁾ NAD 27.4.3.5 [string.capacity] Description of basic_string::operator[] is unclear Yes 105⁽ⁱ⁾ Dup 31.10 [file.streams] fstream ctors argument types desired Yes 454 106⁽ⁱ⁾ TC1 29.6.5 [template.slice.array] Numeric library private members are implementation defined Yes 107⁽ⁱ⁾ NAD 29.6.2 [template.valarray] Valarray constructor is strange Yes 108⁽ⁱ⁾ TC1 17.7.3 [type.info] Lifetime of exception::what() return unspecified Yes 109⁽ⁱ⁾ CD1 99 [depr.lib.binders] Missing binders for non-const sequence elements Yes 110⁽ⁱ⁾ TC1 24.6.4 [istreambuf.iterator] istreambuf_iterator::equal not const Yes 111⁽ⁱ⁾ NAD 24.6.4.4 [istreambuf.iterator.ops] istreambuf_iterator::equal overspecified, inefficient Yes 112⁽ⁱ⁾ TC1 24.6.5.2 [ostreambuf.iter.cons] Minor typo in ostreambuf_iterator constructor Yes 113⁽ⁱ⁾ NAD 31.7.5.2 [istream] Missing/extra iostream sync semantics Yes 114⁽ⁱ⁾ TC1 17.6.3.4 [new.delete.placement] Placement forms example in error twice Yes 196 115⁽ⁱ⁾ TC1 99 [depr.strstream.cons] Typo in strstream constructors Yes 116⁽ⁱ⁾ Dup 22.9.2 [template.bitset] bitset cannot be constructed with a const char* Yes 778 117⁽ⁱ⁾ CD1 31.7.6.3.2 [ostream.inserters.arithmetic] basic_ostream uses nonexistent num_put member functions Yes 118⁽ⁱ⁾ CD1 31.7.5.3.2 [istream.formatted.arithmetic] basic_istream uses nonexistent num_get member functions Yes 119⁽ⁱ⁾ TC1 16.4.6.14 [res.on.exception.handling] Should virtual functions be allowed to strengthen the exception specification? Yes 120⁽ⁱ⁾ CD1 16.4.5.3 [reserved.names] Can an implementor add specializations? Yes 121⁽ⁱ⁾ NAD 28.3.3.1.2.1 [locale.category] Detailed definition for ctype<wchar_t> specialization Yes 122⁽ⁱ⁾ TC1 31.6.3 [streambuf] streambuf/wstreambuf description should not say they are specializations Yes 123⁽ⁱ⁾ CD1 29.6.5.4 [slice.arr.fill] Should valarray helper arrays fill functions be const? Yes 124⁽ⁱ⁾ TC1 28.3.4.2.3 [locale.ctype.byname] ctype_byname<charT>::do_scan_is & do_scan_not return type should be const charT* Yes 125⁽ⁱ⁾ TC1 29.6.2 [template.valarray] valarray<T>::operator!() return type is inconsistent Yes 126⁽ⁱ⁾ TC1 28.3.4.2.2.3 [locale.ctype.virtuals] typos in Effects clause of ctype::do_narrow() Yes 127⁽ⁱ⁾ TC1 99 [auto.ptr] auto_ptr<> conversion issues Yes 128⁽ⁱ⁾ NAD 31.8 [string.streams] Need open_mode() function for file stream, string streams, file buffers, and string buffers Yes 129⁽ⁱ⁾ TC1 31.7.5.4 [istream.unformatted] Need error indication from seekp() and seekg() Yes 130⁽ⁱ⁾ CD1 23.2.7 [associative.reqmts] Return type of container::erase(iterator) differs for associative containers Yes 451 131⁽ⁱ⁾ NAD 23.3.11.5 [list.ops] list::splice throws nothing Yes 132⁽ⁱ⁾ TC1 23.3.11.3 [list.capacity] list::resize description uses random access iterators Yes 133⁽ⁱ⁾ TC1 23.4.3 [map] map missing get_allocator() Yes 134⁽ⁱ⁾ TC1 23.3.13.2 [vector.cons] vector constructors over specified Yes 135⁽ⁱ⁾ NAD 31.7.5.7.2 [iostream.cons] basic_iostream doubly initialized Yes 136⁽ⁱ⁾ CD1 31.7.5.4 [istream.unformatted] seekp, seekg setting wrong streams? Yes 137⁽ⁱ⁾ TC1 28.3.3.1 [locale] Do use_facet and has_facet look in the global locale? Yes 138⁽ⁱ⁾ NAD 28.3.4.2.5 [locale.codecvt] Class ctype_byname<char> redundant and misleading Yes 139⁽ⁱ⁾ TC1 23.2.4 [sequence.reqmts] Optional sequence operation table description unclear Yes 140⁽ⁱ⁾ NAD Editorial 23.4.3 [map] map<Key, T>::value_type does not satisfy the assignable requirement Yes 141⁽ⁱ⁾ TC1 27.4.3.7.4 [string.insert] basic_string::find_last_of, find_last_not_of say pos instead of xpos Yes 142⁽ⁱ⁾ TC1 26.8.11 [alg.lex.comparison] lexicographical_compare complexity wrong Yes 143⁽ⁱ⁾ NAD 17.15 [support.c.headers] C .h header wording unclear Yes 144⁽ⁱ⁾ TC1 23.3.5.2 [deque.cons] Deque constructor complexity wrong Yes 145⁽ⁱ⁾ NAD 31.5.4.2 [basic.ios.cons] adjustfield lacks default value Yes 146⁽ⁱ⁾ TC1 29.4.6 [complex.ops] complex<T> Inserter and Extractor need sentries Yes 147⁽ⁱ⁾ TC1 16.4.6.4 [global.functions] Library Intro refers to global functions that aren't global Yes 148⁽ⁱ⁾ TC1 99 [facets.examples] Functions in the example facet BoolNames should be const Yes 149⁽ⁱ⁾ C++11 23.2.4 [sequence.reqmts] Insert should return iterator to first element inserted Yes 150⁽ⁱ⁾ TC1 26.6.9 [alg.find.first.of] Find_first_of says integer instead of iterator Yes 151⁽ⁱ⁾ TC1 23.2.4 [sequence.reqmts] Can't currently clear() empty container Yes 152⁽ⁱ⁾ TC1 28.3.4.2.2.3 [locale.ctype.virtuals] Typo in scan_is() semantics Yes 153⁽ⁱ⁾ CD1 28.3.4.2.4.3 [facet.ctype.char.members] Typo in narrow() semantics Yes 207 154⁽ⁱ⁾ TC1 28.3.4.3.2.3 [facet.num.get.virtuals] Missing double specifier for do_get() Yes 155⁽ⁱ⁾ TC1 31.4 [iostream.objects] Typo in naming the class defining the class Init Yes 156⁽ⁱ⁾ TC1 31.5.2.4 [ios.base.locales] Typo in imbue() description Yes 157⁽ⁱ⁾ Dup 31.5.2.6 [ios.base.storage] Meaningless error handling for pword() and iword() Yes 41 158⁽ⁱ⁾ TC1 31.6.3.5.2 [streambuf.virt.buffer] Underspecified semantics for setbuf() Yes 159⁽ⁱ⁾ TC1 31.6.3.5.3 [streambuf.virt.get] Strange use of underflow() Yes 160⁽ⁱ⁾ TC1 31.7.5.2 [istream] Typo: Use of non-existing function exception() Yes 161⁽ⁱ⁾ TC1 31.7.5.3.2 [istream.formatted.arithmetic] Typo: istream_iterator vs. istreambuf_iterator Yes 162⁽ⁱ⁾ Dup 31.7.5.3.3 [istream.extractors] Really "formatted input functions"? Yes 60 163⁽ⁱ⁾ Dup 31.7.5.4 [istream.unformatted] Return of gcount() after a call to gcount Yes 60 164⁽ⁱ⁾ TC1 28.3.4.6.4.3 [locale.time.put.virtuals] do_put() has apparently unused fill argument Yes 165⁽ⁱ⁾ CD1 31.7.6.2 [ostream] xsputn(), pubsync() never called by basic_ostream members? Yes 166⁽ⁱ⁾ Dup 31.7.6.3.3 [ostream.inserters] Really "formatted output functions"? Yes 60 167⁽ⁱ⁾ CD1 31.7.6.3.4 [ostream.inserters.character] Improper use of traits_type::length() Yes 168⁽ⁱ⁾ TC1 31.7.6.4 [ostream.unformatted] Typo: formatted vs. unformatted Yes 169⁽ⁱ⁾ TC1 31.8.2.5 [stringbuf.virtuals] Bad efficiency of overflow() mandated Yes 170⁽ⁱ⁾ TC1 31.8.5 [stringstream] Inconsistent definition of traits_type Yes 171⁽ⁱ⁾ CD1 31.10.3.5 [filebuf.virtuals] Strange seekpos() semantics due to joint position Yes 172⁽ⁱ⁾ TC1 31.7.5.4 [istream.unformatted] Inconsistent types for basic_istream::ignore() Yes 173⁽ⁱ⁾ TC1 31.10.3.5 [filebuf.virtuals] Inconsistent types for basic_filebuf::setbuf() Yes 174⁽ⁱ⁾ TC1 99 [depr.ios.members] Typo: OFF_T vs. POS_T Yes 175⁽ⁱ⁾ TC1 99 [depr.ios.members] Ambiguity for basic_streambuf::pubseekpos() and a few other functions. Yes 176⁽ⁱ⁾ TC1 99 [depr.ios.members] exceptions() in ios_base...? Yes 177⁽ⁱ⁾ NAD 29.4.6 [complex.ops] Complex operators cannot be explicitly instantiated Yes 178⁽ⁱ⁾ NAD 31.4.3 [narrow.stream.objects] Should clog and cerr initially be tied to cout? Yes 179⁽ⁱ⁾ CD1 23.2 [container.requirements] Comparison of const_iterators to iterators doesn't work Yes 180⁽ⁱ⁾ CD1 27.4.3 [basic.string] Container member iterator arguments constness has unintended consequences Yes 181⁽ⁱ⁾ TC1 22.3 [pairs] make_pair() unintended behavior Yes 182⁽ⁱ⁾ CD1 16 [library] Ambiguous references to size_t Yes 183⁽ⁱ⁾ CD1 31.7.7 [std.manip] I/O stream manipulators don't work for wide character streams Yes 184⁽ⁱ⁾ CD1 17.3.5.3 [numeric.special] numeric_limits<bool> wording problems Yes 185⁽ⁱ⁾ CD1 22.10 [function.objects] Questionable use of term "inline" Yes 186⁽ⁱ⁾ CD1 22.9.2.3 [bitset.members] bitset::set() second parameter should be bool Yes 187⁽ⁱ⁾ CD1 26.7.3 [alg.swap] iter_swap underspecified Yes 188⁽ⁱ⁾ NAD 29.6.2.7 [valarray.cassign] valarray helpers missing augmented assignment operators Yes 189⁽ⁱ⁾ TC1 31.5.2.3 [fmtflags.state] setprecision() not specified correctly Yes 190⁽ⁱ⁾ NAD 26.8.9 [alg.min.max] min() and max() functions should be std::binary_functions Yes 191⁽ⁱ⁾ NAD 26.8.4 [alg.binary.search] Unclear complexity for algorithms such as binary search Yes 192⁽ⁱ⁾ NAD 23.2.7 [associative.reqmts] a.insert(p,t) is inefficient and overconstrained Yes 233 193⁽ⁱ⁾ TC1 26.8.8 [alg.heap.operations] Heap operations description incorrect Yes 216 194⁽ⁱ⁾ NAD 31.5.4 [ios] rdbuf() functions poorly specified Yes 195⁽ⁱ⁾ TC1 31.7.5.2.4 [istream.sentry] Should basic_istream::sentry's constructor ever set eofbit? Yes 196⁽ⁱ⁾ Dup 17.6.3.4 [new.delete.placement] Placement new example has alignment problems Yes 114 197⁽ⁱ⁾ NAD 16.4.4.6 [allocator.requirements] max_size() underspecified Yes 198⁽ⁱ⁾ CD1 24.3.4 [iterator.concepts] Validity of pointers and references unspecified after iterator destruction Yes 199⁽ⁱ⁾ TC1 16.4.4.6 [allocator.requirements] What does allocate(0) return? Yes 200⁽ⁱ⁾ CD1 24.3.5.5 [forward.iterators] Forward iterator requirements don't allow constant iterators Yes 201⁽ⁱ⁾ CD1 17.3 [support.limits] Numeric limits terminology wrong Yes 202⁽ⁱ⁾ CD1 26.7.9 [alg.unique] unique() effects unclear when predicate not an equivalence relation Yes 203⁽ⁱ⁾ NAD 31.7.5.2.4 [istream.sentry] basic_istream::sentry::sentry() is uninstantiable with ctype<user-defined type> Yes 204⁽ⁱ⁾ NAD 24.4.3 [iterator.operations] distance(first, last) when "last" is before "first" Yes 205⁽ⁱ⁾ NAD 17.3.5.2 [numeric.limits.members] numeric_limits unclear on how to determine floating point types Yes 206⁽ⁱ⁾ CD1 17.6.3.2 [new.delete.single] operator new(size_t, nothrow) may become unlinked to ordinary operator new if ordinary version replaced Yes 207⁽ⁱ⁾ Dup 28.3.4.2.4.3 [facet.ctype.char.members] ctype<char> members return clause incomplete Yes 153 208⁽ⁱ⁾ TC1 24.3.4 [iterator.concepts] Unnecessary restriction on past-the-end iterators Yes 209⁽ⁱ⁾ TC1 27.4.3 [basic.string] basic_string declarations inconsistent Yes 210⁽ⁱ⁾ TC1 26 [algorithms] distance first and last confused Yes 211⁽ⁱ⁾ TC1 27.4.4.4 [string.io] operator>>(istream&, string&) doesn't set failbit Yes 212⁽ⁱ⁾ TC1 26.8.9 [alg.min.max] Empty range behavior unclear for several algorithms Yes 213⁽ⁱ⁾ NAD 29.7 [c.math] Math function overloads ambiguous Yes 214⁽ⁱ⁾ CD1 23.4.6 [set] set::find() missing const overload Yes 450 215⁽ⁱ⁾ NAD 23.2.7 [associative.reqmts] Can a map's key_type be const? Yes 216⁽ⁱ⁾ Dup 31.7.7 [std.manip] setbase manipulator description flawed Yes 193 217⁽ⁱ⁾ TC1 99 [facets.examples] Facets example (Classifying Japanese characters) contains errors Yes 218⁽ⁱ⁾ NAD 26.8 [alg.sorting] Algorithms do not use binary predicate objects for default comparisons Yes 219⁽ⁱ⁾ NAD 26.6.6 [alg.find] find algorithm missing version that takes a binary predicate argument Yes 220⁽ⁱ⁾ TC1 31.5.2.8 [ios.base.cons] ~ios_base() usage valid? Yes 221⁽ⁱ⁾ CD1 28.3.4.3.2.3 [facet.num.get.virtuals] num_get<>::do_get stage 2 processing broken Yes 222⁽ⁱ⁾ TC1 16.3.2.4 [structure.specifications] Are throw clauses necessary if a throw is already implied by the effects clause? Yes 223⁽ⁱ⁾ TC1 26.7.10 [alg.reverse] reverse algorithm should use iter_swap rather than swap Yes 224⁽ⁱ⁾ TC1 23.2.7 [associative.reqmts] clear() complexity for associative containers refers to undefined N Yes 225⁽ⁱ⁾ CD1 16.4.6.4 [global.functions] std:: algorithms use of other unqualified algorithms Yes 226⁽ⁱ⁾ CD1 16.4.5.3 [reserved.names] User supplied specializations or overloads of namespace std function templates Yes 227⁽ⁱ⁾ TC1 26.7.3 [alg.swap] std::swap() should require CopyConstructible or DefaultConstructible arguments Yes 228⁽ⁱ⁾ CD1 28.3.4 [locale.categories] Incorrect specification of "..._byname" facets Yes 229⁽ⁱ⁾ CD1 16.4.2.2 [contents] Unqualified references of other library entities Yes 230⁽ⁱ⁾ CD1 16 [library] Assignable specified without also specifying CopyConstructible Yes 231⁽ⁱ⁾ CD1 28.3.4.3.3.3 [facet.num.put.virtuals] Precision in iostream? Yes 232⁽ⁱ⁾ CD1 16.4.5.3 [reserved.names] "depends" poorly defined in 17.4.3.1 Yes 233⁽ⁱ⁾ CD1 23.2.7 [associative.reqmts] Insertion hints in associative containers Yes 192, 246 234⁽ⁱ⁾ CD1 20.2.10.2 [allocator.members] Typos in allocator definition Yes 235⁽ⁱ⁾ CD1 24.5.1.2 [reverse.iterator] No specification of default ctor for reverse_iterator Yes 236⁽ⁱ⁾ Dup 28.3.4.2.4.3 [facet.ctype.char.members] ctype<char>::is() member modifies facet Yes 28 237⁽ⁱ⁾ CD1 23.3.5.2 [deque.cons] Undefined expression in complexity specification Yes 238⁽ⁱ⁾ CD1 31.8.2.2 [stringbuf.cons] Contradictory results of stringbuf initialization. Yes 239⁽ⁱ⁾ CD1 26.7.9 [alg.unique] Complexity of unique() and/or unique_copy incorrect Yes 240⁽ⁱ⁾ CD1 26.6.10 [alg.adjacent.find] Complexity of adjacent_find() is meaningless Yes 241⁽ⁱ⁾ CD1 26.7.9 [alg.unique] Does unique_copy() require CopyConstructible and Assignable? Yes 242⁽ⁱ⁾ CD1 26.7.4 [alg.transform] Side effects of function objects Yes 243⁽ⁱ⁾ CD1 31.7.5.4 [istream.unformatted] get and getline when sentry reports failure Yes 244⁽ⁱ⁾ NAD 26.6.6 [alg.find] Must find's third argument be CopyConstructible? Yes 245⁽ⁱ⁾ NAD 24.6.2 [istream.iterator] Which operations on istream_iterator trigger input operations? Yes 246⁽ⁱ⁾ Dup 23.2.7 [associative.reqmts] a.insert(p,t) is incorrectly specified Yes 233 247⁽ⁱ⁾ CD1 23.3.13.5 [vector.modifiers] vector, deque::insert complexity Yes 248⁽ⁱ⁾ CD1 28.3.4.6 [category.time] time_get fails to set eofbit Yes 249⁽ⁱ⁾ NAD 99 [auto.ptr] Return Type of auto_ptr::operator= Yes 250⁽ⁱ⁾ CD1 23.3.11.5 [list.ops] splicing invalidates iterators Yes 251⁽ⁱ⁾ CD1 31.8.2 [stringbuf] basic_stringbuf missing allocator_type Yes 252⁽ⁱ⁾ CD1 31.8 [string.streams] missing casts/C-style casts used in iostreams Yes 253⁽ⁱ⁾ CD1 29.6.2.2 [valarray.cons] valarray helper functions are almost entirely useless Yes 254⁽ⁱ⁾ CD1 19.2 [std.exceptions] Exception types in clause 19 are constructed from std::string Yes 255⁽ⁱ⁾ NAD 31.6.3 [streambuf] Why do basic_streambuf<>::pbump() and gbump() take an int? Yes 256⁽ⁱ⁾ CD1 31.5.4.3 [basic.ios.members] typo in 27.4.4.2, p17: copy_event does not exist Yes 257⁽ⁱ⁾ NAD 99 [depr.base] STL functional object and iterator inheritance. Yes 258⁽ⁱ⁾ CD1 16.4.4.6 [allocator.requirements] Missing allocator requirement Yes 259⁽ⁱ⁾ CD1 27.4.3.5 [string.capacity] basic_string::operator[] and const correctness Yes 260⁽ⁱ⁾ CD1 24.6.2.3 [istream.iterator.ops] Inconsistent return type of istream_iterator::operator++(int) Yes 261⁽ⁱ⁾ CD1 24.6.2.3 [istream.iterator.ops] Missing description of istream_iterator::operator!= Yes 262⁽ⁱ⁾ CD1 16.3.3.3.3 [bitmask.types] Bitmask operator ~ specified incorrectly Yes 263⁽ⁱ⁾ CD1 27.4.3 [basic.string] Severe restriction on basic_string reference counting Yes 264⁽ⁱ⁾ CD1 23.2.7 [associative.reqmts] Associative container insert(i, j) complexity requirements are not feasible. Yes 102 265⁽ⁱ⁾ CD1 22.3 [pairs] std::pair::pair() effects overly restrictive Yes 266⁽ⁱ⁾ CD1 17.9.4 [bad.exception] bad_exception::~bad_exception() missing Effects clause Yes 267⁽ⁱ⁾ NAD 99 [depr.strstreambuf.virtuals] interaction of strstreambuf::overflow() and seekoff() Yes 268⁽ⁱ⁾ CD1 28.3.3.1 [locale] Typo in locale synopsis Yes 269⁽ⁱ⁾ NAD 17.9 [support.exception] cstdarg and unnamed parameters Yes 270⁽ⁱ⁾ CD1 26.8.4 [alg.binary.search] Binary search requirements overly strict Yes 472 271⁽ⁱ⁾ CD1 31.7.5.7 [iostreamclass] basic_iostream missing typedefs Yes 272⁽ⁱ⁾ CD1 31.5.4.4 [iostate.flags] Missing parentheses around subexpression Yes 569 273⁽ⁱ⁾ CD1 31 [input.output] Missing ios_base qualification on members of a dependent class Yes 274⁽ⁱ⁾ CD1 16.4.4.6 [allocator.requirements] a missing/impossible allocator requirement Yes 275⁽ⁱ⁾ CD1 28.3.4.3.2.2 [facet.num.get.members] Wrong type in num_get::get() overloads Yes 276⁽ⁱ⁾ CD1 23.2 [container.requirements] Assignable requirement for container value type overly strict Yes 277⁽ⁱ⁾ NAD 16.4.4.6 [allocator.requirements] Normative encouragement in allocator requirements unclear Yes 278⁽ⁱ⁾ CD1 23.3.11.5 [list.ops] What does iterator validity mean? Yes 279⁽ⁱ⁾ NAD 23.2 [container.requirements] const and non-const iterators should have equivalent typedefs Yes 280⁽ⁱ⁾ CD1 24.5.1 [reverse.iterators] Comparison of reverse_iterator to const reverse_iterator Yes 281⁽ⁱ⁾ CD1 26.8.9 [alg.min.max] std::min() and max() requirements overly restrictive Yes 486 282⁽ⁱ⁾ CD1 28.3.4.3.3.3 [facet.num.put.virtuals] What types does numpunct grouping refer to? Yes 283⁽ⁱ⁾ CD1 26.7.5 [alg.replace] std::replace() requirement incorrect/insufficient Yes 483 284⁽ⁱ⁾ CD1 22.10.8 [comparisons] unportable example in 20.3.7, p6 Yes 285⁽ⁱ⁾ CD1 31.10.4.2 [ifstream.cons] minor editorial errors in fstream ctors Yes 286⁽ⁱ⁾ CD1 26.13 [alg.c.library] <cstdlib> requirements missing size_t typedef Yes 287⁽ⁱ⁾ NAD 31.5.2.3 [fmtflags.state] conflicting ios_base fmtflags Yes 288⁽ⁱ⁾ CD1 19.4 [errno] <cerrno> requirements missing macro EILSEQ Yes 289⁽ⁱ⁾ NAD 29.7 [c.math] <cmath> requirements missing C float and long double versions Yes 290⁽ⁱ⁾ NAD 26.6.5 [alg.foreach] Requirements to for_each and its function object Yes 291⁽ⁱ⁾ CD1 26.8.7 [alg.set.operations] Underspecification of set algorithms Yes 292⁽ⁱ⁾ CD1 31.5.4.3 [basic.ios.members] effects of a.copyfmt (a) Yes 293⁽ⁱ⁾ NAD 26.7.4 [alg.transform] Order of execution in transform algorithm Yes 294⁽ⁱ⁾ CD1 16.4.5.3.3 [macro.names] User defined macros and standard headers Yes 295⁽ⁱ⁾ CD1 29.7 [c.math] Is abs defined in <cmath>? Yes 296⁽ⁱ⁾ C++11 22.3 [pairs] Missing descriptions and requirements of pair operators Yes 297⁽ⁱ⁾ CD1 22.10.10 [logical.operations] const_mem_fun_t<>::argument_type should be const T* Yes 298⁽ⁱ⁾ CD1 17.6.3.3 [new.delete.array] ::operator delete[] requirement incorrect/insufficient Yes 299⁽ⁱ⁾ NAD Editorial 24.3.5.6 [bidirectional.iterators] Incorrect return types for iterator dereference Yes 300⁽ⁱ⁾ CD1 23.3.11.5 [list.ops] list::merge() specification incomplete Yes 301⁽ⁱ⁾ CD1 27.4.3.2 [string.require] basic_string template ctor effects clause omits allocator argument Yes 302⁽ⁱ⁾ NAD 28.3.4.2.6 [locale.codecvt.byname] Need error indication from codecvt<>::do_length Yes 303⁽ⁱ⁾ CD1 22.9.4 [bitset.operators] Bitset input operator underspecified Yes 304⁽ⁱ⁾ NAD 24.3.4 [iterator.concepts] Must *a return an lvalue when a is an input iterator? Yes 305⁽ⁱ⁾ CD1 28.3.4.2.6 [locale.codecvt.byname] Default behavior of codecvt<wchar_t, char, mbstate_t>::length() Yes 306⁽ⁱ⁾ CD1 17.2 [support.types] offsetof macro and non-POD types Yes 307⁽ⁱ⁾ CD1 23.3.11 [list] Lack of reference typedefs in container adaptors Yes 308⁽ⁱ⁾ CD1 31 [input.output] Table 82 mentions unrelated headers Yes 309⁽ⁱ⁾ NAD 31.7 [iostream.format] Does sentry catch exceptions? Yes 310⁽ⁱ⁾ CD1 16.4.2.3 [headers] Is errno a macro? Yes 311⁽ⁱ⁾ CD1 31.7.6.2 [ostream] Incorrect wording in basic_ostream class synopsis Yes 312⁽ⁱ⁾ CD1 22 [utilities] Table 27 is missing headers Yes 313⁽ⁱ⁾ NAD 17.9.5.4 [terminate] set_terminate and set_unexpected question Yes 314⁽ⁱ⁾ NAD 17.9.5.4 [terminate] Is the stack unwound when terminate() is called? Yes 315⁽ⁱ⁾ CD1 23.3.11.5 [list.ops] Bad "range" in list::unique complexity Yes 316⁽ⁱ⁾ CD1 23.2.7 [associative.reqmts] Vague text in Table 69 Yes 317⁽ⁱ⁾ CD1 28.3 [localization] Instantiation vs. specialization of facets Yes 318⁽ⁱ⁾ CD1 28.3.4.4.2 [locale.numpunct.byname] Misleading comment in definition of numpunct_byname Yes 319⁽ⁱ⁾ CD1 17.6.3.2 [new.delete.single] Storage allocation wording confuses "Required behavior", "Requires" Yes 320⁽ⁱ⁾ CD1 23.3.11.2 [list.cons] list::assign overspecified Yes 321⁽ⁱ⁾ CD1 28.3.4.3.2.3 [facet.num.get.virtuals] Typo in num_get Yes 322⁽ⁱ⁾ CD1 23.2 [container.requirements] iterator and const_iterator should have the same value type Yes 323⁽ⁱ⁾ NAD 29.7 [c.math] abs() overloads in different headers Yes 324⁽ⁱ⁾ CD1 24.3.5.4 [output.iterators] Do output iterators have value types? Yes 325⁽ⁱ⁾ CD1 28.3.4.7.4.3 [locale.moneypunct.virtuals] Misleading text in moneypunct<>::do_grouping Yes 326⁽ⁱ⁾ NAD 28.3.4.7.5 [locale.moneypunct.byname] Missing typedef in moneypunct_byname Yes 327⁽ⁱ⁾ CD1 28.3.3.1.2.1 [locale.category] Typo in time_get facet in table 52 Yes 447 328⁽ⁱ⁾ CD1 28.3.4.7.3.3 [locale.money.put.virtuals] Bad sprintf format modifier in money_put<>::do_put() Yes 329⁽ⁱ⁾ CD1 23.3.13.3 [vector.capacity] vector capacity, reserve and reallocation Yes 330⁽ⁱ⁾ NAD 28.3.3.1 [locale] Misleading "exposition only" value in class locale definition Yes 331⁽ⁱ⁾ CD1 31.5.2.2.1 [ios.failure] bad declaration of destructor for ios_base::failure Yes 332⁽ⁱ⁾ NAD 31.5.3 [fpos] Consider adding increment and decrement operators to std::fpos< T > Yes 333⁽ⁱ⁾ CD1 31.7.6.5 [ostream.manip] does endl imply synchronization with the device? Yes 334⁽ⁱ⁾ CD1 23.4.3.3 [map.access] map::operator[] specification forces inefficient implementation Yes 335⁽ⁱ⁾ CD1 27.2.2 [char.traits.require] minor issue with char_traits, table 37 Yes 336⁽ⁱ⁾ CD1 16 [library] Clause 17 lack of references to deprecated headers Yes 337⁽ⁱ⁾ CD1 26.7.5 [alg.replace] replace_copy_if's template parameter should be InputIterator Yes 338⁽ⁱ⁾ CD1 28.3.4 [locale.categories] is whitespace allowed between `-' and a digit? Yes 339⁽ⁱ⁾ CD1 28.3.4.2 [category.ctype] definition of bitmask type restricted to clause 27 Yes 340⁽ⁱ⁾ CD1 28.3.3.1.2.1 [locale.category] interpretation of has_facet<Facet>(loc) Yes 341⁽ⁱ⁾ CD1 23.3.13.3 [vector.capacity] Vector reallocation and swap Yes 342⁽ⁱ⁾ NAD 31.7.5.4 [istream.unformatted] seek and eofbit Yes 343⁽ⁱ⁾ Resolved 16 [library] Unspecified library header dependencies Yes 344⁽ⁱ⁾ NAD 28.3.4.3 [category.numeric] grouping + showbase Yes 345⁽ⁱ⁾ CD1 27.5 [c.strings] type tm in <cwchar> Yes 346⁽ⁱ⁾ CD1 24.3.4 [iterator.concepts] Some iterator member functions should be const Yes 347⁽ⁱ⁾ CD1 28.3.3.1.2.1 [locale.category] locale::category and bitmask requirements Yes 348⁽ⁱ⁾ Dup 22.3 [pairs] Minor issue with std::pair operator< Yes 532 349⁽ⁱ⁾ CD1 24.6.3 [ostream.iterator] Minor typographical error in ostream_iterator Yes 350⁽ⁱ⁾ Dup 20.2.10.2 [allocator.members] allocator<>::address Yes 634 351⁽ⁱ⁾ NAD Editorial 22.10 [function.objects] unary_negate and binary_negate: struct or class? Yes 352⁽ⁱ⁾ CD1 27.2.3 [char.traits.typedefs] missing fpos requirements Yes 353⁽ⁱ⁾ Resolved 22.3 [pairs] std::pair missing template assignment Yes 354⁽ⁱ⁾ CD1 23.2.7 [associative.reqmts] Associative container lower/upper bound requirements Yes 355⁽ⁱ⁾ CD1 23.2.4 [sequence.reqmts] Operational semantics for a.back() Yes 356⁽ⁱ⁾ NAD 28.3.4.2 [category.ctype] Meaning of ctype_base::mask enumerators Yes 357⁽ⁱ⁾ NAD Editorial 29.7 [c.math] <cmath> float functions cannot return HUGE_VAL Yes 358⁽ⁱ⁾ CD1 28.3.4.3.2.3 [facet.num.get.virtuals] interpreting thousands_sep after a decimal_point Yes 359⁽ⁱ⁾ CD1 28.3.4.3.3.2 [facet.num.put.members] num_put<>::do_put (..., bool) undocumented Yes 360⁽ⁱ⁾ CD1 28.3.3.1 [locale] locale mandates inefficient implementation Yes 361⁽ⁱ⁾ NAD 28.3.4.3.3.3 [facet.num.put.virtuals] num_get<>::do_get (..., void*&) checks grouping Yes 362⁽ⁱ⁾ CD1 99 [depr.lib.binders] bind1st/bind2nd type safety Yes 363⁽ⁱ⁾ CD1 31.5.2.2.1 [ios.failure] Missing exception specification in 27.4.2.1.1 Yes 364⁽ⁱ⁾ CD1 31.6.3.5.2 [streambuf.virt.buffer] Inconsistent wording in 27.5.2.4.2 Yes 365⁽ⁱ⁾ CD1 31 [input.output] Lack of const-qualification in clause 27 Yes 366⁽ⁱ⁾ NAD 31 [input.output] Excessive const-qualification Yes 367⁽ⁱ⁾ NAD 26.7.8 [alg.remove] remove_copy/remove_copy_if and Input Iterators Yes 368⁽ⁱ⁾ NAD Editorial 27.4.3.7.6 [string.replace] basic_string::replace has two "Throws" paragraphs Yes 369⁽ⁱ⁾ CD1 31.4 [iostream.objects] io stream objects and static ctors Yes 370⁽ⁱ⁾ CD1 31.7.5.4 [istream.unformatted] Minor error in basic_istream::get Yes 371⁽ⁱ⁾ CD1 23.2 [container.requirements] Stability of multiset and multimap member functions Yes 372⁽ⁱ⁾ NAD 16.4.6.14 [res.on.exception.handling] Inconsistent description of stdlib exceptions Yes 373⁽ⁱ⁾ CD1 31.7.5.3.1 [istream.formatted.reqmts] Are basic_istream and basic_ostream to use (exceptions()&badbit) != 0 ? Yes 374⁽ⁱ⁾ NAD 28.3.4.7.4.2 [locale.moneypunct.members] moneypunct::frac_digits returns int not unsigned Yes 375⁽ⁱ⁾ CD1 31.8.2.5 [stringbuf.virtuals] basic_ios should be ios_base in 27.7.1.3 Yes 376⁽ⁱ⁾ CD1 31.8.2.5 [stringbuf.virtuals] basic_streambuf semantics Yes 377⁽ⁱ⁾ NAD 27.4.3.7.4 [string.insert] basic_string::insert and length_error Yes 378⁽ⁱ⁾ Dup 28.3.3.1 [locale] locale immutability and locale::operator=() Yes 31 379⁽ⁱ⁾ CD1 28.3.4.2.2.3 [locale.ctype.virtuals] nonsensical ctype::do_widen() requirement Yes 380⁽ⁱ⁾ CD1 28.3.4.2.6 [locale.codecvt.byname] typos in codecvt tables 53 and 54 Yes 381⁽ⁱ⁾ CD1 28.3.4.2.6 [locale.codecvt.byname] detection of invalid mbstate_t in codecvt Yes 382⁽ⁱ⁾ NAD 28.3.4.2.5 [locale.codecvt] codecvt do_in/out result Yes 383⁽ⁱ⁾ CD1 24.3.5.6 [bidirectional.iterators] Bidirectional iterator assertion typo Yes 384⁽ⁱ⁾ CD1 26.8.4.4 [equal.range] equal_range has unimplementable runtime complexity Yes 385⁽ⁱ⁾ NAD 16 [library] Does call by value imply the CopyConstructible requirement? Yes 386⁽ⁱ⁾ CD1 24.5.1.6 [reverse.iter.elem] Reverse iterator's operator[] has impossible return type Yes 387⁽ⁱ⁾ CD1 29.4 [complex.numbers] std::complex over-encapsulated Yes 388⁽ⁱ⁾ NAD 29.4 [complex.numbers] Use of complex as a key in associative containers Yes 389⁽ⁱ⁾ CD1 29.6.2.4 [valarray.access] Const overload of valarray::operator[] returns by value Yes 77 390⁽ⁱ⁾ NAD Editorial 16.4.4.2 [utility.arg.requirements] CopyConstructible requirements too strict Yes 391⁽ⁱ⁾ CD1 28.3.3.3.2 [conversions.character] non-member functions specified as const Yes 392⁽ⁱ⁾ NAD 24.3.5.3 [input.iterators] 'equivalence' for input iterators Yes 393⁽ⁱ⁾ NAD Editorial 28.3.4.2.5.3 [locale.codecvt.virtuals] do_in/do_out operation on state unclear Yes 394⁽ⁱ⁾ NAD 31.7.6.3.1 [ostream.formatted.reqmts] behavior of formatted output on failure Yes 395⁽ⁱ⁾ CD1 29.7 [c.math] inconsistencies in the definitions of rand() and random_shuffle() Yes 396⁽ⁱ⁾ CD1 22.9.2.2 [bitset.cons] what are characters zero and one Yes 397⁽ⁱ⁾ NAD Editorial 31.7.6.2.4 [ostream.sentry] ostream::sentry dtor throws exceptions Yes 398⁽ⁱ⁾ NAD 31.7.6.2.4 [ostream.sentry] effects of end-of-file on unformatted input functions Yes 399⁽ⁱ⁾ NAD 31.7.5.4 [istream.unformatted] volations of unformatted input function requirements Yes 400⁽ⁱ⁾ CD1 20.2.10.2 [allocator.members] redundant type cast in lib.allocator.members Yes 401⁽ⁱ⁾ CD1 16.4.4.6 [allocator.requirements] incorrect type casts in table 32 in lib.allocator.requirements Yes 402⁽ⁱ⁾ CD1 16.4.4.6 [allocator.requirements] wrong new expression in [some_]allocator::construct Yes 403⁽ⁱ⁾ CD1 27.4.3.7.8 [string.swap] basic_string::swap should not throw exceptions Yes 404⁽ⁱ⁾ CD1 16.4.5.6 [replacement.functions] May a replacement allocation function be declared inline? Yes 405⁽ⁱ⁾ CD1 26.13 [alg.c.library] qsort and POD Yes 406⁽ⁱ⁾ CD1 23.3.13.5 [vector.modifiers] vector::insert(s) exception safety Yes 407⁽ⁱ⁾ CD1 24.3.4 [iterator.concepts] Can singular iterators be destroyed? Yes 408⁽ⁱ⁾ NAD Editorial 24.3 [iterator.requirements] Is vector<reverse_iterator<char*> > forbidden? Yes 409⁽ⁱ⁾ CD1 31.10.4.4 [ifstream.members] Closing an fstream should clear error state Yes 410⁽ⁱ⁾ CD1 23.3.11.2 [list.cons] Missing semantics for stack and queue comparison operators Yes 411⁽ⁱ⁾ CD1 26.8.7 [alg.set.operations] Wrong names of set member functions Yes 412⁽ⁱ⁾ CD1 31.5.4.4 [iostate.flags] Typo in 27.4.4.3 Yes 429 413⁽ⁱ⁾ CD1 31.7.5.3.3 [istream.extractors] Proposed resolution to LDR#64 still wrong Yes 414⁽ⁱ⁾ CD1 23.3.13.5 [vector.modifiers] Which iterators are invalidated by v.erase()? Yes 415⁽ⁱ⁾ CD1 31.7.5.5 [istream.manip] behavior of std::ws Yes 416⁽ⁱ⁾ CD1 17.3.6 [climits.syn] definitions of XXX_MIN and XXX_MAX macros in climits Yes 417⁽ⁱ⁾ NAD 28.3.4.2.2.3 [locale.ctype.virtuals] what does ctype::do_widen() return on failure Yes 418⁽ⁱ⁾ NAD 31.5.2.2.6 [ios.init] exceptions thrown during iostream cleanup Yes 419⁽ⁱ⁾ C++11 31.7.5.2.4 [istream.sentry] istream extractors not setting failbit if eofbit is already set Yes 420⁽ⁱ⁾ CD1 31.10 [file.streams] is std::FILE a complete type? Yes 421⁽ⁱ⁾ NAD 31.6.3.2 [streambuf.cons] is basic_streambuf copy-constructible? Yes 422⁽ⁱ⁾ CD1 16.4.5.3 [reserved.names] explicit specializations of member functions of class templates Yes 423⁽ⁱ⁾ Open 31 [input.output] Effects of negative streamsize in iostreams Yes 3 424⁽ⁱ⁾ NAD Editorial 16.3.2.2 [structure.summary] normative notes Yes 425⁽ⁱ⁾ CD1 99 [depr.temporary.buffer] return value of std::get_temporary_buffer Yes 426⁽ⁱ⁾ CD1 26.6.15 [alg.search] search_n(), fill_n(), and generate_n() with negative n Yes 427⁽ⁱ⁾ C++11 28.3.4.3.2.3 [facet.num.get.virtuals] Stage 2 and rationale of DR 221 Yes 428⁽ⁱ⁾ CD1 27.4.3.7.5 [string.erase] string::erase(iterator) validity Yes 429⁽ⁱ⁾ Dup 31.5.4.4 [iostate.flags] typo in basic_ios::clear(iostate) Yes 412 430⁽ⁱ⁾ C++11 29.6.2.5 [valarray.sub] valarray subset operations Yes 431⁽ⁱ⁾ Resolved 16.4.4.6 [allocator.requirements] Swapping containers with unequal allocators Yes 432⁽ⁱ⁾ CD1 31.8.2.5 [stringbuf.virtuals] stringbuf::overflow() makes only one write position available Yes 433⁽ⁱ⁾ NAD 99 [unexpected] Contradiction in specification of unexpected() Yes 434⁽ⁱ⁾ CD1 22.9.2.3 [bitset.members] bitset::to_string() hard to use Yes 435⁽ⁱ⁾ CD1 27.4.4.4 [string.io] bug in DR 25 Yes 436⁽ⁱ⁾ CD1 28.3.3.1.2.2 [locale.facet] are cv-qualified facet types valid facets? Yes 437⁽ⁱ⁾ NAD 31.7.6.3.2 [ostream.inserters.arithmetic] Formatted output of function pointers is confusing Yes 438⁽ⁱ⁾ CD1 23.2.4 [sequence.reqmts] Ambiguity in the "do the right thing" clause Yes 439⁽ⁱ⁾ NAD 28.3.4 [locale.categories] Should facets be copyable? Yes 440⁽ⁱ⁾ NAD 29.4.8 [complex.transcendentals] Should std::complex use unqualified transcendentals? Yes 441⁽ⁱ⁾ CD1 31.5.3 [fpos] Is fpos::state const? Yes 442⁽ⁱ⁾ CD1 31.7.6.2.4 [ostream.sentry] sentry::operator bool() inconsistent signature Yes 443⁽ⁱ⁾ CD1 31.10.3.4 [filebuf.members] filebuf::close() inconsistent use of EOF Yes 444⁽ⁱ⁾ CD1 31.10 [file.streams] Bad use of casts in fstream Yes 445⁽ⁱ⁾ CD1 24.3.2.3 [iterator.traits] iterator_traits::reference unspecified for some iterator categories Yes 446⁽ⁱ⁾ NAD Editorial 24.3 [iterator.requirements] Iterator equality between different containers Yes 447⁽ⁱ⁾ Dup 28.3.3.1.2.1 [locale.category] Wrong template argument for time facets Yes 327 448⁽ⁱ⁾ CD1 24.3.5.7 [random.access.iterators] Random Access Iterators over abstract classes Yes 449⁽ⁱ⁾ CD1 17.2 [support.types] Library Issue 306 Goes Too Far Yes 450⁽ⁱ⁾ Dup 23.4.6 [set] set::find is inconsistent with associative container requirements Yes 214 451⁽ⁱ⁾ Dup 23.2.7 [associative.reqmts] Associative erase should return an iterator Yes 130 452⁽ⁱ⁾ NAD 28.3.3.1.4 [locale.members] locale::combine should be permitted to generate a named locale Yes 453⁽ⁱ⁾ CD1 31.8.2.5 [stringbuf.virtuals] basic_stringbuf::seekoff need not always fail for an empty stream Yes 454⁽ⁱ⁾ NAD 31.10.3.4 [filebuf.members] basic_filebuf::open should accept wchar_t names Yes 105 455⁽ⁱ⁾ CD1 31.4 [iostream.objects] cerr::tie() and wcerr::tie() are overspecified Yes 456⁽ⁱ⁾ CD1 16.4.2.3 [headers] Traditional C header files are overspecified Yes 457⁽ⁱ⁾ CD1 22.9.2.2 [bitset.cons] bitset constructor: incorrect number of initialized bits Yes 458⁽ⁱ⁾ NAD 24.3.5.7 [random.access.iterators] 24.1.5 contains unintended limitation for operator- Yes 459⁽ⁱ⁾ NAD 28.3.4.3.2.3 [facet.num.get.virtuals] Requirement for widening in stage 2 is overspecification Yes 460⁽ⁱ⁾ CD1 31.10 [file.streams] Default modes missing from basic_fstream member specifications Yes 461⁽ⁱ⁾ CD1 28.3.4.6.2.3 [locale.time.get.virtuals] time_get hard or impossible to implement Yes 462⁽ⁱ⁾ NAD 6.10.3.4 [basic.start.term] Destroying objects with static storage duration Yes 463⁽ⁱ⁾ NAD 99 [auto.ptr] auto_ptr usability issues Yes 464⁽ⁱ⁾ CD1 23.3.13 [vector] Suggestion for new member functions in standard containers Yes 465⁽ⁱ⁾ CD1 16.4.2.3 [headers] Contents of <ciso646> Yes 466⁽ⁱ⁾ NAD 27.4.3.2 [string.require] basic_string ctor should prevent null pointer error Yes 467⁽ⁱ⁾ CD1 27.2.4.2 [char.traits.specializations.char] char_traits::lt(), compare(), and memcmp() Yes 468⁽ⁱ⁾ CD1 31.5.4.4 [iostate.flags] unexpected consequences of ios_base::operator void*() Yes 469⁽ⁱ⁾ CD1 23.3.13 [vector] vector<bool> ill-formed relational operators Yes 470⁽ⁱ⁾ NAD 23 [containers] accessing containers from their elements' special functions Yes 471⁽ⁱ⁾ C++11 17.9.3 [exception] result of what() implementation-defined Yes 472⁽ⁱ⁾ Dup 26.8.4.4 [equal.range] Missing "Returns" clause in std::equal_range Yes 270 473⁽ⁱ⁾ C++11 28.3.4.2.2 [locale.ctype] underspecified ctype calls Yes 474⁽ⁱ⁾ CD1 31.7.6.3.4 [ostream.inserters.character] confusing Footnote 297 Yes 475⁽ⁱ⁾ CD1 26.6.5 [alg.foreach] May the function object passed to for_each modify the elements of the iterated sequence? Yes 476⁽ⁱ⁾ NAD 24.3.5.5 [forward.iterators] Forward Iterator implied mutability Yes 477⁽ⁱ⁾ Dup 24.3.5.5 [forward.iterators] Operator-> for const forward iterators Yes 478 478⁽ⁱ⁾ CD1 24.3.5.5 [forward.iterators] Should forward iterator requirements table have a line for r->m? Yes 477 479⁽ⁱ⁾ Dup 23.2 [container.requirements] Container requirements and placement new Yes 580 480⁽ⁱ⁾ NAD 99 [depr.base] unary_function and binary_function should have protected nonvirtual destructors Yes 481⁽ⁱ⁾ NAD 26.7.9 [alg.unique] unique's effects on the range [result, last) Yes 482⁽ⁱ⁾ Resolved 22.3 [pairs] Swapping pairs Yes 483⁽ⁱ⁾ Dup 26.6 [alg.nonmodifying] Heterogeneous equality and EqualityComparable Yes 283 484⁽ⁱ⁾ Open 24.3.5.3 [input.iterators] Convertible to T No 3 485⁽ⁱ⁾ Resolved 24.3.5.4 [output.iterators] output iterator insufficiently constrained Yes 486⁽ⁱ⁾ Dup 26.8.9 [alg.min.max] min/max CopyConstructible requirement is too strict Yes 281 487⁽ⁱ⁾ NAD 16.4.4.6 [allocator.requirements] Allocator::construct is too limiting Yes 488⁽ⁱ⁾ CD1 26.7.11 [alg.rotate] rotate throws away useful information Yes 489⁽ⁱ⁾ NAD 26.7.8 [alg.remove] std::remove / std::remove_if wrongly specified Yes 490⁽ⁱ⁾ NAD 26.7.9 [alg.unique] std::unique wrongly specified Yes 491⁽ⁱ⁾ NAD 23.3.11.5 [list.ops] std::list<>::unique incorrectly specified Yes 492⁽ⁱ⁾ NAD 16.3.2.4 [structure.specifications] Invalid iterator arithmetic expressions Yes 493⁽ⁱ⁾ NAD 24.3.5.3 [input.iterators] Undefined Expression in Input Iterator Note Title Yes 494⁽ⁱ⁾ NAD 23.2.7 [associative.reqmts] Wrong runtime complexity for associative container's insert and delete Yes 495⁽ⁱ⁾ CD1 28.3 [localization] Clause 22 template parameter requirements Yes 496⁽ⁱ⁾ CD1 23.3.13 [vector] Illegal use of "T" in vector<bool> Yes 497⁽ⁱ⁾ CD1 17.3.5.2 [numeric.limits.members] meaning of numeric_limits::traps for floating point types Yes 498⁽ⁱ⁾ C++11 26.8.5 [alg.partitions] Requirements for partition() and stable_partition() too strong Yes 499⁽ⁱ⁾ NAD Editorial 26.8.2.2 [stable.sort] Std. doesn't seem to require stable_sort() to be stable! Yes 500⁽ⁱ⁾ NAD 28.3.4.2.6 [locale.codecvt.byname] do_length cannot be implemented correctly Yes 501⁽ⁱ⁾ NAD 99 [depr.base] Proposal: strengthen guarantees of lib.comparisons Yes 502⁽ⁱ⁾ NAD 28.3.3.1.2.1 [locale.category] Proposition: Clarification of the interaction between a facet and an iterator Yes 503⁽ⁱ⁾ NAD 28.3.4 [locale.categories] more on locales Yes 504⁽ⁱ⁾ NAD Editorial 29.5.3 [rand.req] Integer types in pseudo-random number engine requirements Yes 505⁽ⁱ⁾ CD1 29.5.3 [rand.req] Result_type in random distribution requirements Yes 506⁽ⁱ⁾ NAD 29.5 [rand] Requirements of Distribution parameter for variate_generator Yes 507⁽ⁱ⁾ CD1 29.5 [rand] Missing requirement for variate_generator::operator() Yes 508⁽ⁱ⁾ CD1 29.5.6 [rand.predef] Bad parameters for ranlux64_base_01 Yes 509⁽ⁱ⁾ NAD 29.5.9.2 [rand.dist.uni] Uniform_int template parameters Yes 510⁽ⁱ⁾ NAD 29.5.9.3 [rand.dist.bern] Input_type for bernoulli_distribution Yes 511⁽ⁱ⁾ NAD 29.5.9 [rand.dist] Input_type for binomial_distribution Yes 512⁽ⁱ⁾ NAD Editorial 29.5.4 [rand.eng] Seeding subtract_with_carry_01 from a single unsigned long Yes 513⁽ⁱ⁾ NAD Editorial 29.5.4 [rand.eng] Size of state for subtract_with_carry_01 Yes 514⁽ⁱ⁾ NAD Editorial 29.5.4.4 [rand.eng.sub] Size of state for subtract_with_carry Yes 515⁽ⁱ⁾ NAD 29.5.2 [rand.synopsis] Random number engine traits Yes 516⁽ⁱ⁾ NAD Editorial 29.5.4 [rand.eng] Seeding subtract_with_carry_01 using a generator Yes 517⁽ⁱ⁾ NAD 29.5.3 [rand.req] Should include name in external representation Yes 518⁽ⁱ⁾ CD1 23.2.8 [unord.req] Are insert and erase stable for unordered_multiset and unordered_multimap? Yes 519⁽ⁱ⁾ CD1 23.3.3 [array] Data() undocumented Yes 520⁽ⁱ⁾ CD1 22.10.15 [func.bind] Result_of and pointers to data members Yes 521⁽ⁱ⁾ CD1 22.10.6 [refwrap] Garbled requirements for argument_type in reference_wrapper Yes 522⁽ⁱ⁾ CD1 22.4 [tuple] Tuple doesn't define swap Yes 523⁽ⁱ⁾ Open 28.6 [re] regex case-insensitive character ranges are unimplementable as specified No 4 524⁽ⁱ⁾ CD1 28.6 [re] regex named character classes and case-insensitivity don't mix Yes 525⁽ⁱ⁾ Resolved 21.3.6 [meta.unary] type traits definitions not clear Yes 526⁽ⁱ⁾ NAD 23.2.4 [sequence.reqmts] Is it undefined if a function in the standard changes in parameters? Yes 527⁽ⁱ⁾ CD1 22.10.15.4 [func.bind.bind] tr1::bind has lost its Throws clause Yes 528⁽ⁱ⁾ NAD 23.5 [unord] const_iterator iterator issue when they are the same type Yes 529⁽ⁱ⁾ NAD Editorial 99 [res.on.required] The standard encourages redundant and confusing preconditions Yes 530⁽ⁱ⁾ CD1 27.4.3 [basic.string] Must elements of a string be contiguous? Yes 531⁽ⁱ⁾ CD1 31.7.5.4 [istream.unformatted] array forms of unformatted input functions Yes 532⁽ⁱ⁾ LEWG 22.4.9 [tuple.rel] Tuple comparison Yes 348 533⁽ⁱ⁾ CD1 20.3.2.2.11 [util.smartptr.getdeleter] typo in 2.2.3.10/1 Yes 534⁽ⁱ⁾ CD1 27.4.3 [basic.string] Missing basic_string members Yes 535⁽ⁱ⁾ CD1 27.4.3.7.8 [string.swap] std::string::swap specification poorly worded Yes 536⁽ⁱ⁾ Dup 23.2 [container.requirements] Container iterator constructor and explicit convertibility Yes 589 537⁽ⁱ⁾ CD1 31.7.5.4 [istream.unformatted] Typos in the signatures in 27.6.1.3/42-43 and 27.6.2.4 Yes 538⁽ⁱ⁾ CD1 26.7.9 [alg.unique] 241 again: Does unique_copy() require CopyConstructible and Assignable? Yes 539⁽ⁱ⁾ C++11 26.10.7 [partial.sum] partial_sum and adjacent_difference should mention requirements Yes 540⁽ⁱ⁾ CD1 20.3.2.2.6 [util.smartptr.shared.obs] shared_ptr<void>::operator*() Yes 541⁽ⁱ⁾ CD1 20.3.2.2 [util.smartptr.shared] shared_ptr template assignment and void Yes 542⁽ⁱ⁾ CD1 20.3.2.2.6 [util.smartptr.shared.obs] shared_ptr observers Yes 543⁽ⁱ⁾ CD1 29.6.4 [class.slice] valarray slice default constructor Yes 544⁽ⁱ⁾ NAD Editorial C.8 [diff.library] minor NULL problems in C.2 Yes 545⁽ⁱ⁾ CD1 20.3.2.2.11 [util.smartptr.getdeleter] When is a deleter deleted? Yes 546⁽ⁱ⁾ NAD 5.1.1 [tr1::tr.rand.req] [tr1] _Longlong and _ULonglong are integer types Yes 547⁽ⁱ⁾ NAD 29.5 [rand] division should be floating-point, not integer Yes 548⁽ⁱ⁾ NAD 29.5.7 [rand.device] May random_device block? Yes 549⁽ⁱ⁾ NAD Editorial 29.5.9 [rand.dist] Undefined variable in binomial_distribution Yes 550⁽ⁱ⁾ CD1 29.7 [c.math] What should the return type of pow(float,int) be? Yes 551⁽ⁱ⁾ CD1 17.15 [support.c.headers] <ccomplex> Yes 552⁽ⁱ⁾ CD1 26.7.13 [alg.random.shuffle] random_shuffle and its generator Yes 553⁽ⁱ⁾ NAD Editorial 17.4.1 [cstdint.syn] very minor editorial change intptr_t / uintptr_t Yes 554⁽ⁱ⁾ NAD 17.3.5.3 [numeric.special] Problem with lwg DR 184 numeric_limits<bool> Yes 555⁽ⁱ⁾ NAD Editorial 8.21 [tr1::tr.c99.boolh] [tr1] 8.21/1: typo Yes 556⁽ⁱ⁾ C++11 26.8 [alg.sorting] Is Compare a BinaryPredicate? Yes 557⁽ⁱ⁾ NAD Editorial 17.4.1 [cstdint.syn] TR1: div(_Longlong, _Longlong) vs div(intmax_t, intmax_t) Yes 558⁽ⁱ⁾ NAD Editorial 24.3.5.3 [input.iterators] lib.input.iterators Defect Yes 559⁽ⁱ⁾ CD1 17.3.5 [numeric.limits] numeric_limits<const T> Yes 560⁽ⁱ⁾ NAD 16.4.4.6 [allocator.requirements] User-defined allocators without default constructor Yes 561⁽ⁱ⁾ CD1 24.5.2.4.3 [inserter] inserter overly generic Yes 562⁽ⁱ⁾ CD1 31.8 [string.streams] stringbuf ctor inefficient Yes 563⁽ⁱ⁾ CD1 31.8.2.5 [stringbuf.virtuals] stringbuf seeking from end Yes 564⁽ⁱ⁾ C++11 31.8.2.5 [stringbuf.virtuals] stringbuf seekpos underspecified Yes 565⁽ⁱ⁾ C++11 31.6.3.5.5 [streambuf.virt.put] xsputn inefficient Yes 566⁽ⁱ⁾ CD1 31.7.5.4 [istream.unformatted] array forms of unformatted input function undefined for zero-element arrays Yes 567⁽ⁱ⁾ CD1 31.7 [iostream.format] streambuf inserter and extractor should be unformatted Yes 568⁽ⁱ⁾ NAD 8.16.4 [tr1::tr.c99.cmath.over] [tr1] log2 overloads missing Yes 569⁽ⁱ⁾ Dup 31.5.4.4 [iostate.flags] Postcondition for basic_ios::clear(iostate) incorrectly stated Yes 272 570⁽ⁱ⁾ NAD 27.2 [char.traits] Request adding additional explicit specializations of char_traits Yes 571⁽ⁱ⁾ NAD Editorial 2 [intro.refs] Update C90 references to C99? Yes 572⁽ⁱ⁾ NAD 29.5 [rand] Oops, we gave 507 WP status Yes 573⁽ⁱ⁾ NAD 31.5.3 [fpos] C++0x file positioning should handle modern file sizes Yes 574⁽ⁱ⁾ CD1 31.4 [iostream.objects] DR 369 Contradicts Text Yes 575⁽ⁱ⁾ CD1 20.3.2.2.3 [util.smartptr.shared.dest] the specification of ~shared_ptr is MT-unfriendly, makes implementation assumptions Yes 576⁽ⁱ⁾ CD1 26.6.9 [alg.find.first.of] find_first_of is overconstrained Yes 577⁽ⁱ⁾ CD1 26.8.4.3 [upper.bound] upper_bound(first, last, ...) cannot return last Yes 578⁽ⁱ⁾ CD1 20.2.10.2 [allocator.members] purpose of hint to allocator::allocate() Yes 579⁽ⁱ⁾ NAD 23.2.8 [unord.req] erase(iterator) for unordered containers should not return an iterator Yes 580⁽ⁱ⁾ NAD Editorial 23.2.2 [container.requirements.general] unused allocator members Yes 479 581⁽ⁱ⁾ CD1 31.7.6.4 [ostream.unformatted] flush() not unformatted function Yes 582⁽ⁱ⁾ NAD 26.11.5 [uninitialized.copy] specialized algorithms and volatile storage Yes 583⁽ⁱ⁾ NAD 29.7 [c.math] div() for unsigned integral types Yes 584⁽ⁱ⁾ NAD 29.7 [c.math] missing int pow(int,int) functionality Yes 585⁽ⁱ⁾ NAD 28.3.4 [locale.categories] facet error reporting Yes 586⁽ⁱ⁾ CD1 27.4.4.4 [string.io] string inserter not a formatted function Yes 587⁽ⁱ⁾ NAD Editorial 99 [depr.istrstream.cons] iststream ctor missing description Yes 588⁽ⁱ⁾ NAD 23.3.3 [array] requirements on zero sized tr1::arrays and other details Yes 589⁽ⁱ⁾ CD1 23.2 [container.requirements] Requirements on iterators of member template functions of containers Yes 536 590⁽ⁱ⁾ NAD Editorial 21 [meta] Type traits implementation latitude should be removed for C++0x Yes 591⁽ⁱ⁾ NAD Editorial 17.3.5.2 [numeric.limits.members] Misleading "built-in Yes 592⁽ⁱ⁾ NAD Editorial 31.10.4.4 [ifstream.members] Incorrect treatment of rdbuf()->close() return type Yes 593⁽ⁱ⁾ CD1 17.4.1 [cstdint.syn] __STDC_CONSTANT_MACROS Yes 594⁽ⁱ⁾ Resolved 16.4.4.2 [utility.arg.requirements] Disadvantages of defining Swappable in terms of CopyConstructible and Assignable Yes 595⁽ⁱ⁾ CD1 29.4.7 [complex.value.ops] TR1/C++0x: fabs(complex<T>) redundant / wrongly specified Yes 596⁽ⁱ⁾ CD1 31.10.3.4 [filebuf.members] 27.8.1.3 Table 112 omits "a+" and "a+b" modes Yes 597⁽ⁱ⁾ NAD 3.2 [dec.tr::trdec.types.types] [dec.tr] The notion of 'promotion' cannot be emulated by user-defined types. Yes 598⁽ⁱ⁾ TRDec 3.2 [dec.tr::trdec.types.types] [dec.tr] Conversion to integral should truncate, not round. Yes 599⁽ⁱ⁾ TRDec 3.1 [dec.tr::trdec.types.encodings] [dec.tr] Say "octets" instead of "bytes." Yes 600⁽ⁱ⁾ TRDec 3.9 [dec.tr::trdec.types.cwchar] [dec.tr] Wrong parameters for wcstod* functions Yes 601⁽ⁱ⁾ TRDec 3.3 [dec.tr::trdec.types.limits] [dec.tr] numeric_limits typos Yes 602⁽ⁱ⁾ TRDec 3 [dec.tr::trdec.types] [dec.tr] "generic floating type" not defined. Yes 603⁽ⁱ⁾ TRDec 3 [dec.tr::trdec.types] [dec.tr] Trivially simplifying decimal classes. Yes 604⁽ⁱ⁾ TRDec 3 [dec.tr::trdec.types] [dec.tr] Storing a reference to a facet unsafe. Yes 605⁽ⁱ⁾ TRDec 3.4 [dec.tr::trdec.types.cdecfloat] [dec.tr] <decfloat.h> doesn't live here anymore. Yes 606⁽ⁱ⁾ NAD 3.2 [dec.tr::trdec.types.types] [dec.tr] allow narrowing conversions Yes 607⁽ⁱ⁾ CD1 29.5.8.1 [rand.util.seedseq] Concern about short seed vectors Yes 608⁽ⁱ⁾ CD1 29.5.8.1 [rand.util.seedseq] Unclear seed_seq construction details Yes 609⁽ⁱ⁾ CD1 29.5.5.3 [rand.adapt.ibits] missing static const Yes 610⁽ⁱ⁾ CD1 22.10.17.3.2 [func.wrap.func.con] Suggested non-normative note for C++0x Yes 611⁽ⁱ⁾ CD1 16.4.5.8 [res.on.functions] Standard library templates and incomplete types Yes 612⁽ⁱ⁾ CD1 17.3.5.2 [numeric.limits.members] numeric_limits::is_modulo insufficiently defined Yes 613⁽ⁱ⁾ CD1 17.3.5.3 [numeric.special] max_digits10 missing from numeric_limits Yes 614⁽ⁱ⁾ NAD 27.4.3 [basic.string] std::string allocator requirements still inconsistent Yes 615⁽ⁱ⁾ NAD Editorial 27.5 [c.strings] Inconsistencies in Section 21.4 Yes 616⁽ⁱ⁾ CD1 28.3.4.2.3 [locale.ctype.byname] missing 'typename' in ctype_byname Yes 617⁽ⁱ⁾ Open 23.3.3 [array] std::array is a sequence that doesn't satisfy the sequence requirements? No 3 618⁽ⁱ⁾ CD1 29.6.2.8 [valarray.members] valarray::cshift() effects on empty array Yes 619⁽ⁱ⁾ CD1 17.14 [support.runtime] Longjmp wording problem Yes 620⁽ⁱ⁾ CD1 29.6.2.2 [valarray.cons] valid uses of empty valarrays Yes 621⁽ⁱ⁾ CD1 29.6 [numarray] non-const copy assignment operators of helper arrays Yes 622⁽ⁱ⁾ CD1 31.10.6.4 [fstream.members] behavior of filebuf dtor and close on error Yes 623⁽ⁱ⁾ CD1 31.2.1 [iostream.limits.imbue] pubimbue forbidden to call imbue Yes 624⁽ⁱ⁾ CD1 29.6.2.3 [valarray.assign] valarray assignment and arrays of unequal length Yes 625⁽ⁱ⁾ Resolved 16 [library] Mixed up Effects and Returns clauses Yes 895 626⁽ⁱ⁾ NAD Editorial 16.3.2.4 [structure.specifications] new Remark clauses not documented Yes 627⁽ⁱ⁾ NAD 17.6.3.2 [new.delete.single] Low memory and exceptions Yes 628⁽ⁱ⁾ CD1 28.6.7 [re.regex] Inconsistent definition of basic_regex constructor Yes 629⁽ⁱ⁾ CD1 29.4.6 [complex.ops] complex<T> insertion and locale dependence Yes 630⁽ⁱ⁾ C++11 29.6.2.2 [valarray.cons] arrays of valarray Yes 631⁽ⁱ⁾ NAD 26 [algorithms] conflicting requirements for BinaryPredicate Yes 632⁽ⁱ⁾ NAD 23.2 [container.requirements] Time complexity of size() for std::set Yes 633⁽ⁱ⁾ NAD Editorial 22.10.17.3.6 [func.wrap.func.targ] Return clause mentions undefined "type()" Yes 634⁽ⁱ⁾ CD1 20.2.10.2 [allocator.members] allocator.address() doesn't work for types overloading operator& Yes 350 635⁽ⁱ⁾ Resolved 16.4.4.6 [allocator.requirements] domain of allocator::address Yes 636⁽ⁱ⁾ NAD Editorial 29.6.2.4 [valarray.access] 26.5.2.3 valarray::operator[] Yes 637⁽ⁱ⁾ NAD Editorial 29.7 [c.math] §[c.math]/10 inconsistent return values Yes 638⁽ⁱ⁾ CD1 23.3.5.4 [deque.modifiers] deque end invalidation during erase Yes 639⁽ⁱ⁾ NAD 31.7.5.3.3 [istream.extractors] Still problems with exceptions during streambuf IO Yes 640⁽ⁱ⁾ CD1 31.7.6.3.2 [ostream.inserters.arithmetic] 27.6.2.5.2 does not handle (unsigned) long long Yes 641⁽ⁱ⁾ NAD Editorial 31.7.8 [ext.manip] Editorial fix for 27.6.4 (N2134) Yes 642⁽ⁱ⁾ NAD Editorial 31.10.4.4 [ifstream.members] Invalidated fstream footnotes in N2134 Yes 643⁽ⁱ⁾ CD1 31.10.3 [filebuf] Impossible "as if" clauses Yes 644⁽ⁱ⁾ NAD 22.10.17.3 [func.wrap.func] Possible typos in 'function' description Yes 645⁽ⁱ⁾ NAD Editorial 28.6.9 [re.results] Missing members in match_results Yes 646⁽ⁱ⁾ CD1 28.6.9.6 [re.results.form] const incorrect match_result members Yes 647⁽ⁱ⁾ NAD Editorial 28.6.10.3 [re.alg.search] Inconsistent regex_search params Yes 648⁽ⁱ⁾ NAD Editorial 28.6.11.1.2 [re.regiter.cnstr] regex_iterator c'tor needs clarification/editorial fix Yes 649⁽ⁱ⁾ NAD Editorial 28.6.11.2.2 [re.tokiter.cnstr] Several typos in regex_token_iterator constructors Yes 650⁽ⁱ⁾ CD1 28.6.11.2 [re.tokiter] regex_token_iterator and const correctness Yes 651⁽ⁱ⁾ CD1 28.6.11.2.2 [re.tokiter.cnstr] Missing preconditions for regex_token_iterator c'tors Yes 652⁽ⁱ⁾ CD1 28.6.11.1 [re.regiter] regex_iterator and const correctness Yes 653⁽ⁱ⁾ NAD 2 [intro.refs] Library reserved names Yes 654⁽ⁱ⁾ CD1 29.5.3.4 [rand.req.eng] Missing IO roundtrip for random number engines Yes 655⁽ⁱ⁾ CD1 29.5.8.2 [rand.util.canonical] Signature of generate_canonical not useful Yes 656⁽ⁱ⁾ NAD Editorial 29.5.2 [rand.synopsis] Typo in subtract_with_carry_engine declaration Yes 657⁽ⁱ⁾ NAD 16.4.3.2 [using.headers] unclear requirement about header inclusion Yes 658⁽ⁱ⁾ Resolved 22.10 [function.objects] Two unspecified function comparators in [function.objects] Yes 659⁽ⁱ⁾ C++11 24.6.4 [istreambuf.iterator] istreambuf_iterator should have an operator->() Yes 660⁽ⁱ⁾ CD1 22.10 [function.objects] Missing Bitwise Operations Yes 661⁽ⁱ⁾ CD1 31.7.5.3.2 [istream.formatted.arithmetic] New 27.6.1.2.2 changes make special extractions useless Yes 662⁽ⁱ⁾ NAD 28.3.4.3.2.3 [facet.num.get.virtuals] Inconsistent handling of incorrectly-placed thousands separators Yes 663⁽ⁱ⁾ NAD 16.3.2.4 [structure.specifications] Complexity Requirements Yes 664⁽ⁱ⁾ CD1 28.3.4.2.5.3 [locale.codecvt.virtuals] do_unshift for codecvt<char, char, mbstate_t> Yes 665⁽ⁱ⁾ CD1 28.3.4.2.5.3 [locale.codecvt.virtuals] do_unshift return value Yes 666⁽ⁱ⁾ CD1 28.3.4.7.4.3 [locale.moneypunct.virtuals] moneypunct::do_curr_symbol() Yes 667⁽ⁱ⁾ NAD 28.3.4.7.2.3 [locale.money.get.virtuals] money_get's widened minus sign Yes 668⁽ⁱ⁾ NAD 28.3.4.7.2.3 [locale.money.get.virtuals] money_get's empty minus sign Yes 669⁽ⁱ⁾ NAD 28.3.4.7.2.3 [locale.money.get.virtuals] Equivalent postive and negative signs in money_get Yes 670⁽ⁱ⁾ Dup 28.3.4.7.4 [locale.moneypunct] money_base::pattern and space Yes 836 671⁽ⁱ⁾ C++11 28.3.4.3.3.3 [facet.num.put.virtuals] precision of hexfloat Yes 672⁽ⁱ⁾ CD1 16.4.4.2 [utility.arg.requirements] Swappable requirements need updating Yes 673⁽ⁱ⁾ CD1 20.3.1 [unique.ptr] unique_ptr update Yes 674⁽ⁱ⁾ CD1 20.3.2.2 [util.smartptr.shared] shared_ptr interface changes for consistency with N1856 Yes 675⁽ⁱ⁾ CD1 23.2 [container.requirements] Move assignment of containers Yes 676⁽ⁱ⁾ C++11 23.5 [unord] Moving the unordered containers Yes 677⁽ⁱ⁾ CD1 29.5.8.1 [rand.util.seedseq] Weaknesses in seed_seq::randomize [rand.util.seedseq] Yes 678⁽ⁱ⁾ CD1 29.5.3.4 [rand.req.eng] Changes for [rand.req.eng] Yes 679⁽ⁱ⁾ CD1 23.3 [sequences] resize parameter by value Yes 680⁽ⁱ⁾ CD1 24.5.4.2 [move.iterator] move_iterator operator-> return Yes 681⁽ⁱ⁾ CD1 28.6.8.3 [re.submatch.op] Operator functions impossible to compare are defined in [re.submatch.op] Yes 682⁽ⁱ⁾ CD1 28.6.7.2 [re.regex.construct] basic_regex ctor takes InputIterator or ForwardIterator? Yes 683⁽ⁱ⁾ NAD Editorial 28.6.11.2 [re.tokiter] regex_token_iterator summary error Yes 684⁽ⁱ⁾ NAD Editorial 28.6.9 [re.results] Unclear which members of match_results should be used in comparison Yes 685⁽ⁱ⁾ CD1 24.5.1.9 [reverse.iter.nonmember] reverse_iterator/move_iterator difference has invalid signatures Yes 686⁽ⁱ⁾ NAD 20.3.1.3.5 [unique.ptr.single.observers] unique_ptr and shared_ptr fail to specify non-convertibility to int for unspecified-bool-type Yes 687⁽ⁱ⁾ CD1 20.3.2.2.2 [util.smartptr.shared.const] shared_ptr conversion constructor not constrained Yes 688⁽ⁱ⁾ C++11 22.10.6.2 [refwrap.const] reference_wrapper, cref unsafe, allow binding to rvalues Yes 689⁽ⁱ⁾ CD1 22.10.6.2 [refwrap.const] reference_wrapper constructor overly constrained Yes 690⁽ⁱ⁾ NAD Editorial 29.7 [c.math] abs(long long) should return long long Yes 691⁽ⁱ⁾ CD1 23.5 [unord] const_local_iterator cbegin, cend missing from TR1 Yes 692⁽ⁱ⁾ CD1 31.7.8 [ext.manip] get_money and put_money should be formatted I/O functions Yes 693⁽ⁱ⁾ CD1 22.9.2 [template.bitset] std::bitset::all() missing Yes 694⁽ⁱ⁾ CD1 22.9.2 [template.bitset] std::bitset and long long Yes 695⁽ⁱ⁾ CD1 28.3.4.2.4 [facet.ctype.special] ctype<char>::classic_table() not accessible Yes 696⁽ⁱ⁾ C++11 31.7.5.3.2 [istream.formatted.arithmetic] istream::operator>>(int&) broken Yes 697⁽ⁱ⁾ Resolved 19.5 [syserr] New <system_error> header leads to name clashes Yes 698⁽ⁱ⁾ CD1 19.5.8.1 [syserr.syserr.overview] system_error needs const char* constructors Yes 699⁽ⁱ⁾ CD1 29.5 [rand] N2111 changes min/max Yes 700⁽ⁱ⁾ CD1 22.2.4 [forward] N1856 defines struct identity Yes 701⁽ⁱ⁾ NAD 5.2.1.1 [tr1::tr.num.sf.Lnm] [tr1] assoc laguerre poly's Yes 702⁽ⁱ⁾ NAD 5.2.1.2 [tr1::tr.num.sf.Plm] [tr1] Restriction in associated Legendre functions Yes 703⁽ⁱ⁾ CD1 23.4.3.3 [map.access] map::at() need a complexity specification Yes 704⁽ⁱ⁾ C++11 23.2 [container.requirements] MoveAssignable requirement for container value type overly strict Yes 705⁽ⁱ⁾ CD1 21.3.9.7 [meta.trans.other] type-trait decay incompletely specified Yes 706⁽ⁱ⁾ CD1 22.3 [pairs] make_pair() should behave as make_tuple() wrt. reference_wrapper() Yes 707⁽ⁱ⁾ NAD 17.9.7 [propagation] null pointer constant for exception_ptr Yes 708⁽ⁱ⁾ NAD 28.3 [localization] Locales need to be per thread and updated for POSIX changes Yes 709⁽ⁱ⁾ CD1 27.2.4 [char.traits.specializations] char_traits::not_eof has wrong signature Yes 710⁽ⁱ⁾ CD1 20.3.2.2 [util.smartptr.shared] Missing postconditions Yes 711⁽ⁱ⁾ C++11 20.3.2.2.6 [util.smartptr.shared.obs] Contradiction in empty shared_ptr Yes 712⁽ⁱ⁾ CD1 29.5.8.1 [rand.util.seedseq] seed_seq::size no longer useful Yes 713⁽ⁱ⁾ CD1 26.8.2.1 [sort] sort() complexity is too lax Yes 714⁽ⁱ⁾ CD1 26.6.15 [alg.search] search_n complexity is too lax Yes 715⁽ⁱ⁾ CD1 26.8.9 [alg.min.max] minmax_element complexity is too lax Yes 716⁽ⁱ⁾ C++11 28.6.12 [re.grammar] Production in [re.grammar] not actually modified Yes 717⁽ⁱ⁾ NAD Editorial 29.6.2.4 [valarray.access] Incomplete valarray::operator[] specification in [valarray.access] Yes 718⁽ⁱ⁾ NAD Editorial 27.4.3 [basic.string] basic_string is not a sequence Yes 719⁽ⁱ⁾ Resolved 21 [meta] std::is_literal type traits should be provided Yes 750 720⁽ⁱ⁾ CD1 23.3.3 [array] Omissions in constexpr usages Yes 721⁽ⁱ⁾ NAD 99 [depr.conversions.string] wstring_convert inconsistensies Yes 722⁽ⁱ⁾ CD1 29.7 [c.math] Missing [c.math] functions nanf and nanl Yes 723⁽ⁱ⁾ C++11 28.6.7 [re.regex] basic_regex should be moveable Yes 724⁽ⁱ⁾ C++11 16.4.4.2 [utility.arg.requirements] DefaultConstructible is not defined Yes 725⁽ⁱ⁾ NAD Editorial 23.2.4 [sequence.reqmts] Optional sequence container requirements column label Yes 726⁽ⁱ⁾ NAD 28.6.10.4 [re.alg.replace] Missing regex_replace() overloads Yes 727⁽ⁱ⁾ C++11 28.6.10.4 [re.alg.replace] regex_replace() doesn't accept basic_strings with custom traits and allocators Yes 728⁽ⁱ⁾ CD1 29.5.4.3 [rand.eng.mers] Problem in [rand.eng.mers]/6 Yes 729⁽ⁱ⁾ NAD 29.5.3.4 [rand.req.eng] Problem in [rand.req.eng]/3 Yes 730⁽ⁱ⁾ NAD 29.5.3.5 [rand.req.adapt] Comment on [rand.req.adapt]/3 e) Yes 731⁽ⁱ⁾ NAD 29.5.8.1 [rand.util.seedseq] proposal for a customizable seed_seq Yes 732⁽ⁱ⁾ Resolved 99 [rand.dist.samp.genpdf] Defect in [rand.dist.samp.genpdf] Yes 795 733⁽ⁱ⁾ NAD 29.5.3.6 [rand.req.dist] Comment on [rand.req.dist]/9 Yes 734⁽ⁱ⁾ CD1 29.5.9.5.3 [rand.dist.norm.chisq] Unnecessary restriction in [rand.dist.norm.chisq] Yes 735⁽ⁱ⁾ NAD 29.5.9.3.2 [rand.dist.bern.bin] Unfortunate naming Yes 736⁽ⁱ⁾ NAD 29.5.9.6.1 [rand.dist.samp.discrete] Comment on [rand.dist.samp.discrete] Yes 737⁽ⁱ⁾ NAD 29.5.9.6.2 [rand.dist.samp.pconst] Comment on [rand.dist.samp.pconst] Yes 738⁽ⁱ⁾ NAD Editorial 29.5.5.2 [rand.adapt.disc] Editorial issue in [rand.adapt.disc]/3 Yes 739⁽ⁱ⁾ NAD 29.5.8.2 [rand.util.canonical] Defect in [rand.util.canonical]/3 Yes 740⁽ⁱ⁾ CD1 20.3.1 [unique.ptr] Please remove *_ptr<T[N]> Yes 741⁽ⁱ⁾ NAD 20.3.2.2.11 [util.smartptr.getdeleter] Const-incorrect get_deleter function for shared_ptr Yes 742⁽ⁱ⁾ Resolved 16.4.4.2 [utility.arg.requirements] Enabling swap for proxy iterators Yes 743⁽ⁱ⁾ CD1 20.3.2.2.9 [util.smartptr.shared.spec] rvalue swap for shared_ptr Yes 744⁽ⁱ⁾ CD1 17.9.7 [propagation] What is the lifetime of an exception pointed to by an exception_ptr? Yes 745⁽ⁱ⁾ NAD 17.9.7 [propagation] copy_exception API slices. Yes 746⁽ⁱ⁾ CD1 17.9.7 [propagation] current_exception may fail with bad_alloc Yes 747⁽ⁱ⁾ NAD 21.3.6.4 [meta.unary.prop] We have 3 separate type traits to identify classes supporting no-throw operations Yes 748⁽ⁱ⁾ NAD 21.3.6.4 [meta.unary.prop] The is_abstract type trait is defined by reference to 10.4. Yes 749⁽ⁱ⁾ CD1 21.3.6.4 [meta.unary.prop] Currently has_nothrow_copy_constructor<T>::value is true if T has 'a' nothrow copy constructor. Yes 750⁽ⁱ⁾ Dup 21.3.8 [meta.rel] The current definition for is_convertible requires that the type be implicitly convertible, so explicit constructors are ignored. Yes 719 751⁽ⁱ⁾ NAD 23.3.14 [vector.bool] change pass-by-reference members of vector<bool> to pass-by-value? Yes 752⁽ⁱ⁾ C++11 16.4.4.6 [allocator.requirements] Allocator complexity requirement Yes 753⁽ⁱ⁾ C++11 16.4.4.2 [utility.arg.requirements] Move constructor in draft Yes 754⁽ⁱ⁾ NAD Editorial 26.11.5 [uninitialized.copy] Ambiguous return clause for std::uninitialized_copy Yes 755⁽ⁱ⁾ CD1 23.3.13.3 [vector.capacity] std::vector and std:string lack explicit shrink-to-fit operations Yes 756⁽ⁱ⁾ Resolved 23.6 [container.adaptors] Container adaptors push Yes 757⁽ⁱ⁾ NAD Editorial 23.3.13 [vector] Typo in the synopsis of vector Yes 758⁽ⁱ⁾ C++11 20.3.2.2 [util.smartptr.shared] shared_ptr and nullptr Yes 759⁽ⁱ⁾ CD1 23.2 [container.requirements] A reference is not an object Yes 760⁽ⁱ⁾ NAD 23.2 [container.requirements] The emplace issue Yes 2 761⁽ⁱ⁾ CD1 23.5.3.3 [unord.map.elem] unordered_map needs an at() member function Yes 762⁽ⁱ⁾ CD1 20.3.1 [unique.ptr] std::unique_ptr requires complete type? Yes 763⁽ⁱ⁾ NAD 23.2.7 [associative.reqmts] Renaming emplace() overloads Yes 764⁽ⁱ⁾ NAD 23.2.8 [unord.req] equal_range on unordered containers should return a pair of local_iterators Yes 765⁽ⁱ⁾ C++11 24.3.4 [iterator.concepts] More on iterator validity Yes 766⁽ⁱ⁾ CD1 23.2 [container.requirements] Inconsistent exception guarantees between ordered and unordered associative containers Yes 767⁽ⁱ⁾ Resolved 23 [containers] Forwarding and backward compatibility Yes 768⁽ⁱ⁾ CD1 32.5.8 [atomics.types.generic] Typos in [atomics]? Yes 769⁽ⁱ⁾ CD1 22.10.17.3 [func.wrap.func] std::function should use nullptr_t instead of "unspecified-null-pointer-type" Yes 770⁽ⁱ⁾ CD1 22.10.17 [func.wrap] std::function should use rvalue swap Yes 771⁽ⁱ⁾ CD1 27.4.5 [string.conversions] Impossible throws clause in [string.conversions] Yes 772⁽ⁱ⁾ CD1 27.4.5 [string.conversions] Impossible return clause in [string.conversions] Yes 773⁽ⁱ⁾ NAD 29.5.9.2 [rand.dist.uni] issues with random Yes 774⁽ⁱ⁾ C++11 23 [containers] Member swap undefined for most containers Yes 775⁽ⁱ⁾ CD1 22.4.7 [tuple.helper] Tuple indexing should be unsigned? Yes 776⁽ⁱ⁾ CD1 23.3.3 [array] Undescribed assign function of std::array Yes 777⁽ⁱ⁾ CD1 32.5.8.2 [atomics.types.operations] Atomics Library Issue Yes 778⁽ⁱ⁾ CD1 22.9.2.2 [bitset.cons] std::bitset does not have any constructor taking a string literal Yes 116 779⁽ⁱ⁾ CD1 26.7.8 [alg.remove] Resolution of #283 incomplete Yes 780⁽ⁱ⁾ C++11 26.8.6 [alg.merge] std::merge() specification incorrect/insufficient Yes 781⁽ⁱ⁾ CD1 29.4.7 [complex.value.ops] std::complex should add missing C99 functions Yes 782⁽ⁱ⁾ CD1 29.5.8.1 [rand.util.seedseq] Extended seed_seq constructor is useless Yes 783⁽ⁱ⁾ CD1 32.4.3.2 [thread.thread.id] thread::id reuse Yes 784⁽ⁱ⁾ NAD 32.6.5.4.4 [thread.lock.unique.mod] unique_lock::release Yes 785⁽ⁱ⁾ NAD 5.1.4.5 [tr1::tr.rand.eng.disc] [tr1] Random Number Requirements in TR1 Yes 786⁽ⁱ⁾ Resolved 30 [time] Thread library timed waits, UTC and monotonic clocks Yes 787⁽ⁱ⁾ CD1 26.8.4.5 [binary.search] complexity of binary_search Yes 788⁽ⁱ⁾ C++11 24.6.2 [istream.iterator] Ambiguity in [istream.iterator] Yes 789⁽ⁱ⁾ CD1 99 [rand.adapt.xor] xor_combine_engine(result_type) should be explicit Yes 790⁽ⁱ⁾ NAD 99 [rand.adapt.xor] xor_combine::seed not specified Yes 791⁽ⁱ⁾ NAD 29.5.9.6.2 [rand.dist.samp.pconst] piecewise_constant_distribution::densities has wrong name Yes 792⁽ⁱ⁾ CD1 29.5.9.6.2 [rand.dist.samp.pconst] piecewise_constant_distribution is undefined for a range with just one endpoint Yes 793⁽ⁱ⁾ Resolved 29.5.9.6.1 [rand.dist.samp.discrete] discrete_distribution missing constructor Yes 794⁽ⁱ⁾ Resolved 29.5.9.6.2 [rand.dist.samp.pconst] piecewise_constant_distribution missing constructor Yes 795⁽ⁱ⁾ Dup 99 [rand.dist.samp.genpdf] general_pdf_distribution should be dropped Yes 732 796⁽ⁱ⁾ NAD 29.5.6 [rand.predef] ranlux48_base returns wrong value Yes 797⁽ⁱ⁾ NAD 29.5.6 [rand.predef] ranlux48 returns wrong value Yes 798⁽ⁱ⁾ CD1 99 [depr.lib.binders] Refactoring of binders lead to interface breakage Yes 799⁽ⁱ⁾ NAD 29.5.4.3 [rand.eng.mers] Mersenne twister equality overspecified Yes 800⁽ⁱ⁾ Resolved 29.5.8.1 [rand.util.seedseq] Issues in 26.4.7.1 [rand.util.seedseq](6) Yes 801⁽ⁱ⁾ Resolved 22.4 [tuple] tuple and pair trivial members Yes 802⁽ⁱ⁾ NAD 29.5.6 [rand.predef] knuth_b returns wrong value Yes 803⁽ⁱ⁾ Resolved 29.5.8.1 [rand.util.seedseq] Simplification of seed_seq::seq_seq Yes 804⁽ⁱ⁾ CD1 19.5 [syserr] Some problems with classes error_code/error_condition Yes 805⁽ⁱ⁾ CD1 19.5 [syserr] posix_error::posix_errno concerns Yes 806⁽ⁱ⁾ CD1 20.3.1.3.6 [unique.ptr.single.modifiers] unique_ptr::reset effects incorrect, too permissive Yes 807⁽ⁱ⁾ CD1 22.4.4.2 [tuple.cnstr] tuple construction should not fail unless its element's construction fails Yes 808⁽ⁱ⁾ CD1 22.2.4 [forward] §[forward] incorrect redundant specification Yes 809⁽ⁱ⁾ CD1 26.7.3 [alg.swap] std::swap should be overloaded for array types Yes 810⁽ⁱ⁾ C++11 31.7.8 [ext.manip] Missing traits dependencies in operational semantics of extended manipulators Yes 811⁽ⁱ⁾ C++11 22.3 [pairs] pair of pointers no longer works with literal 0 Yes 812⁽ⁱ⁾ NAD Editorial 26.8.2 [alg.sort] unsolicited multithreading considered harmful? Yes 813⁽ⁱ⁾ CD1 20.3.2.2 [util.smartptr.shared] "empty" undefined for shared_ptr Yes 814⁽ⁱ⁾ C++11 23.3.14 [vector.bool] vector<bool>::swap(reference, reference) not defined Yes 815⁽ⁱ⁾ Resolved 22.10.17.3.5 [func.wrap.func.inv] std::function and reference_closure do not use perfect forwarding Yes 816⁽ⁱ⁾ Resolved 22.10.15.4 [func.bind.bind] Should bind()'s returned functor have a nofail copy ctor when bind() is nofail? Yes 817⁽ⁱ⁾ C++11 22.10.15.4 [func.bind.bind] bind needs to be moved Yes 818⁽ⁱ⁾ CD1 32.5.4 [atomics.order] wording for memory ordering Yes 819⁽ⁱ⁾ C++11 17.9.8 [except.nested] rethrow_if_nested Yes 820⁽ⁱ⁾ CD1 17.9.7 [propagation] current_exception()'s interaction with throwing copy ctors Yes 821⁽ⁱ⁾ C++11 20.3.1.4.5 [unique.ptr.runtime.modifiers] Minor cleanup : unique_ptr Yes 822⁽ⁱ⁾ NAD 16.4.4.2 [utility.arg.requirements] Object with explicit copy constructor no longer CopyConstructible Yes 823⁽ⁱ⁾ Resolved 22.2.4 [forward] identity<void> seems broken Yes 824⁽ⁱ⁾ CD1 27.4.4.4 [string.io] rvalue ref issue with basic_string inserter Yes 825⁽ⁱ⁾ Resolved 19.5.4.1 [syserr.errcode.overview] Missing rvalues reference stream insert/extract operators? Yes 826⁽ⁱ⁾ NAD 28.3.4.3.3 [locale.nm.put] Equivalent of %'d, or rather, lack thereof? Yes 827⁽ⁱ⁾ Resolved 20.3.2.2.2 [util.smartptr.shared.const] constexpr shared_ptr::shared_ptr()? Yes 828⁽ⁱ⁾ Resolved 32.6.4.2.2 [thread.mutex.class] Static initialization for std::mutex? Yes 829⁽ⁱ⁾ CD1 17.9.7 [propagation] current_exception wording unclear about exception type Yes 830⁽ⁱ⁾ NAD Editorial 27.2 [char.traits] Incomplete list of char_traits specializations Yes 831⁽ⁱ⁾ NAD Editorial 27.2.4 [char.traits.specializations] wrong type for not_eof() Yes 832⁽ⁱ⁾ NAD 19.5 [syserr] Applying constexpr to System error support Yes 833⁽ⁱ⁾ NAD 16.4.2.5 [compliance] Freestanding implementations header list needs review for C++0x Yes 834⁽ⁱ⁾ Resolved 20.3.1.3 [unique.ptr.single] unique_ptr::pointer requirements underspecified Yes 835⁽ⁱ⁾ C++11 31.5.4.3 [basic.ios.members] Tying two streams together (correction to DR 581) Yes 836⁽ⁱ⁾ C++11 28.3.4.7.2.3 [locale.money.get.virtuals] Effects of money_base::space and money_base::none on money_get Yes 670 837⁽ⁱ⁾ NAD Editorial 31.5.4.3 [basic.ios.members] basic_ios::copyfmt() overly loosely specified Yes 838⁽ⁱ⁾ C++11 24.6.2 [istream.iterator] Can an end-of-stream iterator become a non-end-of-stream one? Yes 839⁽ⁱ⁾ Resolved 23.4 [associative] Maps and sets missing splice operation Yes 840⁽ⁱ⁾ NAD 22.3 [pairs] pair default template argument Yes 841⁽ⁱ⁾ NAD Editorial 17.4.1 [cstdint.syn] cstdint.syn inconsistent with C99 Yes 842⁽ⁱ⁾ CD1 23.2 [container.requirements] ConstructibleAsElement and bit containers Yes 843⁽ⁱ⁾ CD1 99 [func.referenceclosure.cons] Reference Closure Yes 844⁽ⁱ⁾ CD1 29.4.10 [cmplx.over] complex pow return type is ambiguous Yes 845⁽ⁱ⁾ CD1 32.5.8 [atomics.types.generic] atomics cannot support aggregate initialization Yes 846⁽ⁱ⁾ CD1 32.5.8.2 [atomics.types.operations] No definition for constructor Yes 847⁽ⁱ⁾ C++11 27.4.3.2 [string.require] string exception safety guarantees Yes 848⁽ⁱ⁾ CD1 22.10.19 [unord.hash] Missing std::hash specializations for std::bitset/std::vector<bool> Yes 849⁽ⁱ⁾ NAD 21.3.9.7 [meta.trans.other] missing type traits to compute root class and derived class of types in a class hierachy Yes 850⁽ⁱ⁾ CD1 23.3.5.3 [deque.capacity] Should shrink_to_fit apply to std::deque? Yes 851⁽ⁱ⁾ NAD 23.3.3 [array] simplified array construction Yes 852⁽ⁱ⁾ CD1 23.5 [unord] unordered containers begin(n) mistakenly const Yes 853⁽ⁱ⁾ C++11 22.9.2 [template.bitset] to_string needs updating with zero and one Yes 854⁽ⁱ⁾ C++11 20.3.1.2.2 [unique.ptr.dltr.dflt] default_delete converting constructor underspecified Yes 855⁽ⁱ⁾ NAD 23.3.5.3 [deque.capacity] capacity() and reserve() for deque? Yes 856⁽ⁱ⁾ CD1 21.3.9.7 [meta.trans.other] Removal of aligned_union Yes 857⁽ⁱ⁾ C++11 32.7.4 [thread.condition.condvar] condition_variable::time_wait return bool error prone Yes 858⁽ⁱ⁾ CD1 99 [util.dynamic.safety] Wording for Minimal Support for Garbage Collection Yes 859⁽ⁱ⁾ C++11 32.7 [thread.condition] Monotonic Clock is Conditionally Supported? Yes 860⁽ⁱ⁾ C++11 29 [numerics] Floating-Point State Yes 861⁽ⁱ⁾ C++11 23.2 [container.requirements] Incomplete specification of EqualityComparable for std::forward_list Yes 862⁽ⁱ⁾ NAD Editorial 26.8.7.2 [includes] Impossible complexity for 'includes' Yes 863⁽ⁱ⁾ NAD 31.10 [file.streams] What is the state of a stream after close() succeeds Yes 864⁽ⁱ⁾ NAD Editorial 32.5.8.2 [atomics.types.operations] Defect in atomic wording Yes 865⁽ⁱ⁾ C++11 26.7.6 [alg.fill] More algorithms that throw away information Yes 866⁽ⁱ⁾ C++11 26.11 [specialized.algorithms] Qualification of placement new-expressions Yes 867⁽ⁱ⁾ NAD Editorial 29.6.2.2 [valarray.cons] Valarray and value-initialization Yes 868⁽ⁱ⁾ C++11 23 [containers] Default construction and value-initialization Yes 869⁽ⁱ⁾ C++11 23.2.8 [unord.req] Bucket (local) iterators and iterating past end Yes 870⁽ⁱ⁾ C++11 23.2.8 [unord.req] Do unordered containers not support function pointers for predicate/hasher? Yes 871⁽ⁱ⁾ C++11 26.10.13 [numeric.iota] Iota's requirements on T are too strong Yes 872⁽ⁱ⁾ C++11 24.5.4.6 [move.iter.elem] move_iterator::operator[] has wrong return type Yes 873⁽ⁱ⁾ NAD Editorial 6.9.2 [basic.fundamental] signed integral type and unsigned integral type are not clearly defined Yes 874⁽ⁱ⁾ Resolved 29.5.9.6.1 [rand.dist.samp.discrete] Missing initializer_list constructor for discrete_distribution Yes 875⁽ⁱ⁾ Resolved 29.5.9.6.2 [rand.dist.samp.pconst] Missing initializer_list constructor for piecewise_constant_distribution Yes 876⁽ⁱ⁾ C++11 27.4.3 [basic.string] basic_string access operations should give stronger guarantees Yes 877⁽ⁱ⁾ NAD 16 [library] to throw() or to Throw: Nothing. Yes 878⁽ⁱ⁾ C++11 23.3.7 [forward.list] forward_list preconditions Yes 879⁽ⁱ⁾ NAD Editorial 32.5 [atomics] Atomic load const qualification Yes 880⁽ⁱ⁾ Resolved 32.5 [atomics] Missing atomic exchange parameter Yes 942 881⁽ⁱ⁾ C++11 20.3.2.2.2 [util.smartptr.shared.const] shared_ptr conversion issue Yes 882⁽ⁱ⁾ CD1 30.5.6 [time.duration.nonmember] duration non-member arithmetic requirements Yes 883⁽ⁱ⁾ C++11 23 [containers] swap circular definition Yes 884⁽ⁱ⁾ Resolved 20.3.2.2.5 [util.smartptr.shared.mod] shared_ptr swap Yes 885⁽ⁱ⁾ C++11 22.3 [pairs] pair assignment Yes 886⁽ⁱ⁾ C++11 22.4.4.2 [tuple.cnstr] tuple construction Yes 887⁽ⁱ⁾ NAD 32.7.4 [thread.condition.condvar] issue with condition::wait_... Yes 888⁽ⁱ⁾ C++11 32.4.5 [thread.thread.this] this_thread::yield too strong Yes 889⁽ⁱ⁾ Resolved 32.4.3.2 [thread.thread.id] thread::id comparisons Yes 890⁽ⁱ⁾ C++11 19.5.3 [syserr.errcat] Improving <system_error> initialization Yes 891⁽ⁱ⁾ C++11 32.4.3.3 [thread.thread.constr] std::thread, std::call_once issue Yes 892⁽ⁱ⁾ NAD Editorial 23.3.7.6 [forward.list.ops] Forward_list issues... Yes 893⁽ⁱ⁾ C++11 32.6.4.2.2 [thread.mutex.class] std::mutex issue Yes 905 894⁽ⁱ⁾ C++11 17.14 [support.runtime] longjmp and destructors Yes 895⁽ⁱ⁾ Dup 16.3.2.4 [structure.specifications] "Requires:" on std::string::at et al Yes 625 896⁽ⁱ⁾ C++11 20.3.2.2 [util.smartptr.shared] Library thread safety issue Yes 897⁽ⁱ⁾ Resolved 23.3.7.5 [forward.list.modifiers] Forward_list issues... Part 2 Yes 898⁽ⁱ⁾ C++11 23.3.7.6 [forward.list.ops] Small contradiction in n2723 to forward to committee Yes 899⁽ⁱ⁾ C++11 20.3.2.2.3 [util.smartptr.shared.dest] Adjusting shared_ptr for nullptr_t Yes 900⁽ⁱ⁾ C++11 31.10.4 [ifstream] Stream move-assignment Yes 901⁽ⁱ⁾ NAD 24.5.2.4 [insert.iterator] insert iterators can move from lvalues Yes 902⁽ⁱ⁾ NAD Concepts 17.3.5 [numeric.limits] Regular is the wrong concept to constrain numeric_limits Yes 903⁽ⁱ⁾ NAD 24.5.2.2 [back.insert.iterator] back_insert_iterator issue Yes 904⁽ⁱ⁾ C++11 99 [func.ret] result_of argument types Yes 905⁽ⁱ⁾ Dup 32.6.4.2.2 [thread.mutex.class] Mutex specification questions Yes 893 906⁽ⁱ⁾ NAD Concepts 17.11 [support.initlist] ObjectType is the wrong concept to constrain initializer_list Yes 907⁽ⁱ⁾ C++11 22.9.2.3 [bitset.members] Bitset's immutable element retrieval is inconsistently defined Yes 908⁽ⁱ⁾ Resolved 32.5.8 [atomics.types.generic] Deleted assignment operators for atomic types must be volatile Yes 909⁽ⁱ⁾ C++11 28.6.11.2 [re.tokiter] regex_token_iterator should use initializer_list Yes 910⁽ⁱ⁾ NAD Concepts 16.4.4.2 [utility.arg.requirements] Effects of MoveAssignable Yes 911⁽ⁱ⁾ C++11 31.7.5 [input.streams] I/O streams and move/swap semantic Yes 912⁽ⁱ⁾ NAD Concepts 26.7.3 [alg.swap] Array swap needs to be conceptualized Yes 913⁽ⁱ⁾ NAD Concepts 26.7.5 [alg.replace] Superfluous requirements for replace algorithms Yes 914⁽ⁱ⁾ NAD Concepts 26.7.9 [alg.unique] Superfluous requirement for unique Yes 915⁽ⁱ⁾ NAD Editorial 26.8.9 [alg.min.max] minmax with initializer_list should return pair of T, not pair of const T& Yes 916⁽ⁱ⁾ NAD 22.3 [pairs] Redundant move-assignment operator of pair should be removed Yes 917⁽ⁱ⁾ NAD 22.4.4.2 [tuple.cnstr] Redundant move-assignment operator of tuple should be removed Yes 918⁽ⁱ⁾ NAD Concepts 22.4.4.4 [tuple.swap] Swap for tuple needs to be conceptualized Yes 919⁽ⁱ⁾ NAD 23.3.7.6 [forward.list.ops] (forward_)list specialized remove algorithms are over constrained Yes 920⁽ⁱ⁾ C++11 22.10.16 [func.memfn] Ref-qualification support in the library Yes 1230 921⁽ⁱ⁾ C++11 21.5.3 [ratio.ratio] Rational Arithmetic should use template aliases Yes 922⁽ⁱ⁾ C++11 B [implimits] §[func.bind.place] Number of placeholders Yes 923⁽ⁱ⁾ Resolved 32.5 [atomics] atomics with floating-point Yes 924⁽ⁱ⁾ Resolved 32.5 [atomics] structs with internal padding Yes 925⁽ⁱ⁾ C++11 20.3.2.2.2 [util.smartptr.shared.const] shared_ptr's explicit conversion from unique_ptr Yes 926⁽ⁱ⁾ NAD Editorial 32.5.4 [atomics.order] Sequentially consistent fences, relaxed operations and modification order Yes 927⁽ⁱ⁾ NAD Concepts 99 [allocator.concepts] Dereferenceable should be HasDereference Yes 928⁽ⁱ⁾ NAD Concepts 22.4.9 [tuple.rel] Wrong concepts used for tuple's comparison operators Yes 929⁽ⁱ⁾ C++11 32.4.3.3 [thread.thread.constr] Thread constructor Yes 930⁽ⁱ⁾ NAD 23.3.3 [array] Access to std::array data as built-in array type Yes 931⁽ⁱ⁾ C++11 21.3.6.4 [meta.unary.prop] type trait extent<T, I> Yes 932⁽ⁱ⁾ Resolved 20.3.1.3.2 [unique.ptr.single.ctor] unique_ptr(pointer p) for pointer deleter types Yes 933⁽ⁱ⁾ NAD 20.3.1.3.6 [unique.ptr.single.modifiers] Unique_ptr defect Yes 934⁽ⁱ⁾ C++11 30.5 [time.duration] duration is missing operator% Yes 935⁽ⁱ⁾ NAD 30.7 [time.clock] clock error handling needs to be specified Yes 936⁽ⁱ⁾ LEWG 32.6.4 [thread.mutex.requirements] Mutex type overspecified No 961 937⁽ⁱ⁾ NAD Editorial 32.5 [atomics] Atomics for standard typedef types Yes 938⁽ⁱ⁾ C++11 20.3.1.2.3 [unique.ptr.dltr.dflt1] default_delete<T[]>::operator() should only accept T* Yes 939⁽ⁱ⁾ C++11 22.2.4 [forward] Problem with std::identity and reference-to-temporaries Yes 940⁽ⁱ⁾ Resolved 24.4.3 [iterator.operations] std::distance Yes 941⁽ⁱ⁾ NAD 16 [library] Ref-qualifiers for assignment operators Yes 942⁽ⁱ⁾ Dup 32.5 [atomics] Atomics synopsis typo Yes 880 943⁽ⁱ⁾ C++11 99 [atomics.types.address] ssize_t undefined Yes 944⁽ⁱ⁾ Resolved 32.5.8 [atomics.types.generic] atomic<bool> derive from atomic_bool? Yes 945⁽ⁱ⁾ NAD Editorial 30.7.2 [time.clock.system] system_clock::rep not specified Yes 946⁽ⁱ⁾ NAD 30.5.8 [time.duration.cast] duration_cast improperly specified Yes 947⁽ⁱ⁾ Resolved 30.5.6 [time.duration.nonmember] duration arithmetic: contradictory requirements Yes 948⁽ⁱ⁾ C++11 21.5.4 [ratio.arithmetic] ratio arithmetic tweak Yes 949⁽ⁱ⁾ C++11 20.3.2.4 [util.smartptr.ownerless] owner_less Yes 950⁽ⁱ⁾ Resolved 20.3.1.3.2 [unique.ptr.single.ctor] unique_ptr converting ctor shouldn't accept array form Yes 951⁽ⁱ⁾ C++11 30.4.1 [time.traits.is.fp] Various threading bugs #1 Yes 952⁽ⁱ⁾ NAD Editorial 30.5.8 [time.duration.cast] Various threading bugs #2 Yes 953⁽ⁱ⁾ Resolved 30.3 [time.clock.req] Various threading bugs #3 Yes 954⁽ⁱ⁾ C++11 30.3 [time.clock.req] Various threading bugs #4 Yes 955⁽ⁱ⁾ NAD 30.3 [time.clock.req] Various threading bugs #5 Yes 956⁽ⁱ⁾ C++11 30.3 [time.clock.req] Various threading bugs #6 Yes 957⁽ⁱ⁾ C++11 30.7.2 [time.clock.system] Various threading bugs #7 Yes 958⁽ⁱ⁾ Resolved 32.7.4 [thread.condition.condvar] Various threading bugs #8 Yes 959⁽ⁱ⁾ NAD 32.7.4 [thread.condition.condvar] Various threading bugs #9 Yes 960⁽ⁱ⁾ C++11 32.6.4 [thread.mutex.requirements] Various threading bugs #10 Yes 961⁽ⁱ⁾ LEWG 32.6.4 [thread.mutex.requirements] Various threading bugs #11 No 936 962⁽ⁱ⁾ C++11 32.6.5.4.3 [thread.lock.unique.locking] Various threading bugs #12 Yes 963⁽ⁱ⁾ C++11 32.4.3.6 [thread.thread.member] Various threading bugs #13 Yes 964⁽ⁱ⁾ Resolved 32.7.5 [thread.condition.condvarany] Various threading bugs #14 Yes 965⁽ⁱ⁾ C++11 32.7.4 [thread.condition.condvar] Various threading bugs #15 Yes 966⁽ⁱ⁾ Resolved 32.7.4 [thread.condition.condvar] Various threading bugs #16 Yes 967⁽ⁱ⁾ C++11 32.4.3.3 [thread.thread.constr] Various threading bugs #17 Yes 968⁽ⁱ⁾ C++11 32.6.4 [thread.mutex.requirements] Various threading bugs #18 Yes 969⁽ⁱ⁾ NAD Editorial 26.6.5 [alg.foreach] What happened to Library Issue 475? Yes 970⁽ⁱ⁾ C++11 20.2.11 [specialized.addressof] addressof overload unneeded Yes 971⁽ⁱ⁾ NAD 19.5.4.5 [syserr.errcode.nonmembers] Spurious diagnostic conversion function Yes 972⁽ⁱ⁾ NAD Editorial 16 [library] The term "Assignable" undefined but still in use Yes 973⁽ⁱ⁾ NAD Editorial 99 [auto.ptr] auto_ptr characteristics Yes 974⁽ⁱ⁾ C++11 30.5.2 [time.duration.cons] duration<double> should not implicitly convert to duration<int> Yes 975⁽ⁱ⁾ C++11 21.3.8 [meta.rel] is_convertible cannot be instantiated for non-convertible types Yes 976⁽ⁱ⁾ Resolved 23.6.6.2 [stack.defn] Class template std::stack should be movable Yes 977⁽ⁱ⁾ NAD 24.5.2 [insert.iterators] insert iterators inefficient for expensive to move types Yes 978⁽ⁱ⁾ C++11 22.10.19 [unord.hash] Hashing smart pointers Yes 979⁽ⁱ⁾ NAD Editorial 24.5.4 [move.iterators] Bad example Yes 980⁽ⁱ⁾ NAD 32.6.4 [thread.mutex.requirements] mutex lock() missing error conditions Yes 981⁽ⁱ⁾ C++11 23.2.8 [unord.req] Unordered container requirements should add initializer_list support Yes 982⁽ⁱ⁾ C++11 23.2.7 [associative.reqmts] Wrong complexity for initializer_list assignment in Table 85 Yes 983⁽ⁱ⁾ Resolved 20.3.1.3 [unique.ptr.single] unique_ptr reference deleters should not be moved from Yes 984⁽ⁱ⁾ C++11 31.13 [c.files] Does <cinttypes> have macro guards? Yes 985⁽ⁱ⁾ Resolved 23.2.2 [container.requirements.general] Allowing throwing move Yes 986⁽ⁱ⁾ C++11 32.6.6 [thread.lock.algorithm] Generic try_lock contradiction Yes 987⁽ⁱ⁾ C++11 22.10.6 [refwrap] reference_wrapper and function types Yes 988⁽ⁱ⁾ NAD 99 [concept.comparison] Reflexivity meaningless? Yes 989⁽ⁱ⁾ NAD Concepts 16 [library] late_check and library Yes 990⁽ⁱ⁾ C++11 99 [time.clock.monotonic] monotonic_clock::is_monotonic must be true Yes 991⁽ⁱ⁾ C++11 99 [depr.conversions.string] Provide allocator for wstring_convert Yes 992⁽ⁱ⁾ NAD 16.4.2.2 [contents] Allow implementations to implement C library in the global namespace Yes 993⁽ⁱ⁾ C++11 17.5 [support.start.term] _Exit needs better specification Yes 994⁽ⁱ⁾ C++11 17.6.4.3 [new.handler] quick_exit should terminate well-defined Yes 995⁽ⁱ⁾ NAD 16.3.2.3 [structure.requirements] Operational Semantics Unclear Yes 996⁽ⁱ⁾ NAD 16 [library] Move operation not well specified Yes 997⁽ⁱ⁾ C++11 16.3.2.4 [structure.specifications] "Effects: Equivalent to" is underspecified Yes 998⁽ⁱ⁾ C++11 20.3.1.3.6 [unique.ptr.single.modifiers] Smart pointer referencing its owner Yes 999⁽ⁱ⁾ C++11 26.11 [specialized.algorithms] Taking the address of a function Yes 1000⁽ⁱ⁾ NAD Concepts 26.6.10 [alg.adjacent.find] adjacent_find is over-constrained Yes 1001⁽ⁱ⁾ NAD Concepts 16 [library] Pointers, concepts and headers Yes 1002⁽ⁱ⁾ NAD 16.4.2.3 [headers] Provide bulk include headers Yes 1003⁽ⁱ⁾ NAD 16.4.2.5 [compliance] Require more useful headers for freestanding implementations Yes 1004⁽ⁱ⁾ C++11 16.4.5.8 [res.on.functions] Clarify "throws an exception" Yes 1005⁽ⁱ⁾ NAD Concepts 17.3.5 [numeric.limits] numeric_limits partial specializations not concept enabled Yes 1006⁽ⁱ⁾ C++11 17.6.3 [new.delete] operator delete in garbage collected implementation Yes 1007⁽ⁱ⁾ NAD Concepts 17.9.8 [except.nested] throw_with_nested not concept enabled Yes 1008⁽ⁱ⁾ NAD 17.9.8 [except.nested] nested_exception wording unclear Yes 1009⁽ⁱ⁾ NAD 24.3.5.2 [iterator.iterators] InputIterator post-increment dangerous Yes 1010⁽ⁱ⁾ NAD Concepts 24.3.5.7 [random.access.iterators] operator-= should use default in concept Yes 1011⁽ⁱ⁾ C++11 24.4.3 [iterator.operations] next/prev wrong iterator type Yes 1012⁽ⁱ⁾ C++11 24.5.1.4 [reverse.iter.cons] reverse_iterator default ctor should value initialize Yes 1013⁽ⁱ⁾ NAD Editorial 26.8.9 [alg.min.max] Remove IsSameType hold-over constraints Yes 1014⁽ⁱ⁾ C++11 28.6.7.2 [re.regex.construct] basic_regex should be created/assigned from initializer lists Yes 1015⁽ⁱ⁾ NAD Concepts 99 [concept.transform] C++ programs - but not users - need to provide support concept_maps Yes 1016⁽ⁱ⁾ NAD Concepts 99 [concept.comparison] Provide LessThanComparable and EqualityComparable for FloatingPointType Yes 1017⁽ⁱ⁾ NAD Concepts 99 [concept.regular] Floating-point types should not satisfy Regular Yes 1018⁽ⁱ⁾ NAD Concepts 21 [meta] Trait specifications should be expressed in terms of concepts Yes 1019⁽ⁱ⁾ C++11 21.3.4 [meta.help] Make integral_constant objects useable in integral-constant-expressions Yes 1020⁽ⁱ⁾ NAD 21.3.9.7 [meta.trans.other] Restore aligned_union Yes 1021⁽ⁱ⁾ C++11 20.3.1.3.4 [unique.ptr.single.asgn] Allow nullptr_t assignments to unique_ptr Yes 1022⁽ⁱ⁾ NAD Editorial 99 [util.dynamic.safety] Pointer-safety API has nothing to do with smart pointers Yes 1023⁽ⁱ⁾ NAD Editorial 22.10.17.3 [func.wrap.func] Unclear inheritance relation for std::function Yes 1024⁽ⁱ⁾ NAD Concepts 22.10.17.3 [func.wrap.func] std::function constructors overly generous Yes 1025⁽ⁱ⁾ NAD Future 22.10.19 [unord.hash] The library should provide more specializations for std::hash Yes 1026⁽ⁱ⁾ NAD Concepts 20.2 [memory] Smart pointers need to be concept-constrained templates Yes 1027⁽ⁱ⁾ NAD Concepts 20.2.10 [default.allocator] std::allocator needs to be a concept-constrained template Yes 1028⁽ⁱ⁾ NAD Concepts 99 [depr.storage.iterator] raw_storage_iterator needs to be a concept-constrained template Yes 1029⁽ⁱ⁾ NAD Concepts 26.11 [specialized.algorithms] Specialized algorithms for memory management need to be concept-constrained templates Yes 1030⁽ⁱ⁾ C++11 99 [depr.util.smartptr.shared.atomic] Missing requirements for smart-pointer safety API Yes 1031⁽ⁱ⁾ NAD 20.3.2.2 [util.smartptr.shared] Need shared_ptr conversion to a unique_ptr Yes 1032⁽ⁱ⁾ NAD Concepts 30 [time] Tome utility templates need to be concept-constrained Yes 1033⁽ⁱ⁾ C++11 32.4.3.6 [thread.thread.member] thread::join() effects? Yes 1034⁽ⁱ⁾ C++11 23.2.2 [container.requirements.general] Clarify generality of Container Requirement tables Yes 1035⁽ⁱ⁾ NAD 23.2.2 [container.requirements.general] <array>::swap can invalidate references, pointers, and iterators Yes 1036⁽ⁱ⁾ NAD Concepts 23.2.4 [sequence.reqmts] Remove iterator specification that is redundant due to concept constraints Yes 1037⁽ⁱ⁾ C++11 23.2.4 [sequence.reqmts] Unclear status of match_results as library container Yes 1038⁽ⁱ⁾ C++11 23.2.4 [sequence.reqmts] Sequence requirement table needs to reference several new containers Yes 1039⁽ⁱ⁾ C++11 23.2.4 [sequence.reqmts] Sequence container back function should also support const_iterator Yes 1040⁽ⁱ⁾ C++11 23.2.7 [associative.reqmts] Clarify possible sameness of associative container's iterator and const_iterator Yes 1041⁽ⁱ⁾ Resolved 23.2.7 [associative.reqmts] Add associative/unordered container functions that allow to extract elements Yes 1042⁽ⁱ⁾ NAD 23.3 [sequences] Provide ContiguousStorage concept and apply it to corresponding containers Yes 1043⁽ⁱ⁾ Resolved 32.5.8.2 [atomics.types.operations] Clarify that compare_exchange is not a read-modify-write operation Yes 1044⁽ⁱ⁾ C++11 32.6 [thread.mutex] Empty tag types should be constexpr literals Yes 1045⁽ⁱ⁾ C++11 32.6.5.4.2 [thread.lock.unique.cons] Remove unnecessary preconditions from unique_lock constructor Yes 1046⁽ⁱ⁾ Resolved 32.10 [futures] Provide simple facility to start asynchronous operations Yes 1047⁽ⁱ⁾ Resolved 32.10.7 [futures.unique.future] Ensure that future's get() blocks when not ready Yes 1048⁽ⁱ⁾ Resolved 32.10.7 [futures.unique.future] Provide empty-state inspection for std::unique_future Yes 1049⁽ⁱ⁾ Resolved 32.10.6 [futures.promise] Move assignment of promise inverted Yes 1050⁽ⁱ⁾ Resolved 32.10.6 [futures.promise] Clarify postconditions for get_future() Yes 1051⁽ⁱ⁾ NAD 24.5.1.6 [reverse.iter.elem] Specify subscript operation return types of reverse_iterator and move_iterator Yes 1052⁽ⁱ⁾ Resolved 24.5.1.6 [reverse.iter.elem] reverse_iterator::operator-> should also support smart pointers Yes 2775 1053⁽ⁱ⁾ NAD 26 [algorithms] Unify algorithms with operator and function object variants Yes 1054⁽ⁱ⁾ Resolved 22.2.4 [forward] forward broken Yes 1055⁽ⁱ⁾ Resolved 21.3.9.7 [meta.trans.other] Provide a trait that returns the underlying type of an enumeration type Yes 1056⁽ⁱ⁾ NAD 29.5 [rand] Must all Engines and Distributions be Streamable? Yes 1057⁽ⁱ⁾ NAD Concepts 29.5 [rand] RandomNumberEngineAdaptor Yes 1058⁽ⁱ⁾ NAD Editorial 23.2.4 [sequence.reqmts] New container issue Yes 1059⁽ⁱ⁾ NAD Concepts 22.10.17.3 [func.wrap.func] Usage of no longer existing FunctionType concept Yes 1060⁽ⁱ⁾ NAD Editorial 16.3.3.3.4.2 [byte.strings] Embedded nulls in NTBS Yes 1061⁽ⁱ⁾ NAD Editorial 22.3.4 [pair.astuple] Bad indexing for tuple access to pair (Editorial?) Yes 1062⁽ⁱ⁾ NAD 24.5.2 [insert.iterators] Missing insert_iterator for stacks/queues Yes 1063⁽ⁱ⁾ NAD Concepts 99 [iterator.backward] 03 iterator compatibilty Yes 1064⁽ⁱ⁾ NAD 99 [defns.obj.state] Term "object state" should not refer to classes Yes 1065⁽ⁱ⁾ C++11 16.4.2.2 [contents] Allow inline namespaces within namespace std for implementations Yes 1066⁽ⁱ⁾ C++11 17 [support] Use [[noreturn]] attribute in the library Yes 1067⁽ⁱ⁾ NAD Concepts 26.10 [numeric.ops] simplified wording for inner_product Yes 1068⁽ⁱ⁾ NAD 29.5.7 [rand.device] class random_device should be movable Yes 1069⁽ⁱ⁾ NAD 29.5.8.1 [rand.util.seedseq] class seed_seq should support efficient move operations Yes 1070⁽ⁱ⁾ C++11 22.10.17.3 [func.wrap.func] Ambiguous move overloads in function Yes 1071⁽ⁱ⁾ C++11 22.10.15.2 [func.bind.isbind] is_bind_expression should derive from integral_constant<bool> Yes 1072⁽ⁱ⁾ NAD Concepts 22.10.19 [unord.hash] Is std::hash a constrained template or not? Yes 1073⁽ⁱ⁾ C++11 20.2 [memory] Declaration of allocator_arg should be constexpr Yes 1074⁽ⁱ⁾ NAD Concepts 99 [allocator.element.concepts] concept map broken by N2840 Yes 1075⁽ⁱ⁾ Resolved 22 [utilities] Scoped allocators are too complex Yes 1076⁽ⁱ⁾ NAD Concepts 99 [depr.negators] unary/binary_negate need constraining and move support Yes 1077⁽ⁱ⁾ NAD Editorial 22.4.4 [tuple.tuple] Nonesense tuple declarations Yes 1078⁽ⁱ⁾ NAD Concepts 17.7.7 [type.index] DE-17: Remove class type_index Yes 1079⁽ⁱ⁾ C++11 24.3.5.7 [random.access.iterators] UK-265: RandomAccessIterator's operator- has nonsensical effects clause Yes 1080⁽ⁱ⁾ NAD Concepts 99 [concept.arithmetic] Concept ArithmeticLike should provide explicit boolean conversion Yes 1081⁽ⁱ⁾ NAD Concepts 27 [strings] basic_string needs to be a concept-constrained template Yes 1082⁽ⁱ⁾ NAD Concepts 28.3 [localization] codecvt needs to be a concept-constrained template Yes 1083⁽ⁱ⁾ NAD Concepts 28.3 [localization] InputIterator and OutputIterator template parameters need to be concept constraints Yes 1084⁽ⁱ⁾ NAD Concepts 24.3.5.5 [forward.iterators] Concept ForwardIterator should provide default implementation for post-increment Yes 1085⁽ⁱ⁾ NAD Concepts 24.3.5.6 [bidirectional.iterators] BidirectionalIterator concept should provide default implementation for post-decrement Yes 1086⁽ⁱ⁾ NAD Concepts 24.6 [stream.iterators] Stream iterators need to be concept-constrained templates Yes 1087⁽ⁱ⁾ NAD Concepts 26.7.5 [alg.replace] Incorrect OutputIterator concept requirements for replace algorithms Yes 1088⁽ⁱ⁾ Resolved 32.10.6 [futures.promise] std::promise should provide non-member swap overload Yes 1089⁽ⁱ⁾ C++11 32 [thread] Unify "Throws: Nothing." specifications Yes 1090⁽ⁱ⁾ Resolved 32.10.10 [futures.task] Missing description of packaged_task member swap, missing non-member swap Yes 1091⁽ⁱ⁾ NAD 23.4.4.3 [multimap.modifiers] Multimap description confusing Yes 1092⁽ⁱ⁾ NAD Concepts 21.3.4 [meta.help] Class template integral_constant should be a constrained template Yes 1093⁽ⁱ⁾ Resolved 26.7.13 [alg.random.shuffle] Multiple definitions for random_shuffle algorithm Yes 1094⁽ⁱ⁾ C++11 31.5.4.4 [iostate.flags] Replace "unspecified-bool-type" by "explicit operator bool() const" in I/O library Yes 1095⁽ⁱ⁾ C++11 16.4.5.10 [res.on.objects] Shared objects and the library wording unclear Yes 1096⁽ⁱ⁾ NAD Concepts 16 [library] unconstrained rvalue ref parameters Yes 1097⁽ⁱ⁾ C++11 17.2 [support.types] #define __STDCPP_THREADS Yes 1098⁽ⁱ⁾ C++11 99 [util.dynamic.safety] definition of get_pointer_safety() Yes 1099⁽ⁱ⁾ NAD 16 [library] Various issues Yes 1100⁽ⁱ⁾ Resolved 20.3.1.3.2 [unique.ptr.single.ctor] auto_ptr to unique_ptr conversion Yes 1101⁽ⁱ⁾ NAD Editorial 26.7.9 [alg.unique] unique requirements Yes 1102⁽ⁱ⁾ Open 23.3.13.3 [vector.capacity] std::vector's reallocation policy still unclear Yes 3 1103⁽ⁱ⁾ C++11 19.5.8.2 [syserr.syserr.members] system_error constructor postcondition overly strict Yes 1104⁽ⁱ⁾ C++11 31.5.4.3 [basic.ios.members] basic_ios::move should accept lvalues Yes 1105⁽ⁱ⁾ NAD Concepts 99 [iterator.concepts.range] Shouldn't Range be an auto concept Yes 1106⁽ⁱ⁾ Resolved 32.10.8 [futures.shared.future] Multiple exceptions from connected shared_future::get()? Yes 1107⁽ⁱ⁾ NAD Editorial 32.10.8 [futures.shared.future] constructor shared_future(unique_future) by value? Yes 1108⁽ⁱ⁾ C++11 32.2.2 [thread.req.exception] thread.req.exception overly constrains implementations Yes 1109⁽ⁱ⁾ NAD Concepts 26.8.7.2 [includes] std::includes should require CopyConstructible predicate Yes 1110⁽ⁱ⁾ C++11 26.6.5 [alg.foreach] Is for_each overconstrained? Yes 1111⁽ⁱ⁾ NAD Concepts 23.4 [associative] associative containers underconstrained Yes 1112⁽ⁱ⁾ NAD 22.9.2 [template.bitset] bitsets and new style for loop Yes 1113⁽ⁱ⁾ C++11 22.9.2 [template.bitset] bitset::to_string could be simplified Yes 1114⁽ⁱ⁾ C++11 21 [meta] Type traits underspecified Yes 1115⁽ⁱ⁾ NAD Editorial C.8 [diff.library] va_copy missing from Standard macros table Yes 1116⁽ⁱ⁾ Resolved 22.4.4 [tuple.tuple] Literal constructors for tuple Yes 1117⁽ⁱ⁾ Resolved 22.4.4.2 [tuple.cnstr] tuple copy constructor Yes 1118⁽ⁱ⁾ C++11 22.4.7 [tuple.helper] tuple query APIs do not support cv-qualification Yes 1119⁽ⁱ⁾ NAD 22.4.7 [tuple.helper] tuple query APIs do not support references Yes 1120⁽ⁱ⁾ NAD 21 [meta] New type trait - remove_all Yes 1121⁽ⁱ⁾ NAD 21.5.4 [ratio.arithmetic] Support for multiple arguments Yes 1122⁽ⁱ⁾ Resolved 21.5.3 [ratio.ratio] Ratio values should be constexpr Yes 1123⁽ⁱ⁾ C++11 31.5.2.2.6 [ios.init] No requirement that standard streams be flushed Yes 1124⁽ⁱ⁾ NAD Concepts 99 [concept.transform] Invalid definition of concept RvalueOf Yes 1125⁽ⁱ⁾ NAD 24.6.3.3 [ostream.iterator.ops] ostream_iterator does not work with movable types Yes 1126⁽ⁱ⁾ C++11 24.6.4.4 [istreambuf.iterator.ops] istreambuff_iterator::equal needs a const & parameter Yes 1127⁽ⁱ⁾ NAD Concepts 24.3.2.3 [iterator.traits] rvalue references and iterator traits Yes 1128⁽ⁱ⁾ NAD Concepts 24.2 [iterator.synopsis] Missing definition of iterator_traits<T*> Yes 1129⁽ⁱ⁾ Resolved 24.6.2.2 [istream.iterator.cons] istream(buf)_iterator should support literal sentinel value Yes 1130⁽ⁱ⁾ C++11 17.9.7 [propagation] copy_exception name misleading Yes 1131⁽ⁱ⁾ C++11 21.3.6.4 [meta.unary.prop] C++0x does not need alignment_of Yes 1132⁽ⁱ⁾ NAD 17.9.8 [except.nested] JP-30: nested exceptions Yes 1133⁽ⁱ⁾ C++11 23.3.7.6 [forward.list.ops] Does N2844 break current specification of list::splice? Yes 1134⁽ⁱ⁾ C++11 29.7 [c.math] Redundant specification of <stdint.h>, <fenv.h>, <tgmath.h>, and maybe <complex.h> Yes 1135⁽ⁱ⁾ Resolved 17.9.7 [propagation] exception_ptr should support contextual conversion to bool Yes 1136⁽ⁱ⁾ C++11 17.9.8 [except.nested] Incomplete specification of nested_exception::rethrow_nested() Yes 1137⁽ⁱ⁾ C++11 29.4.10 [cmplx.over] Return type of conj and proj Yes 1138⁽ⁱ⁾ C++11 27.4.4.1 [string.op.plus] Unusual return value for operator+ Yes 1139⁽ⁱ⁾ NAD Concepts 32 [thread] Thread support library not concept enabled Yes 1140⁽ⁱ⁾ NAD Concepts 29 [numerics] Numerics library not concept enabled Yes 1141⁽ⁱ⁾ NAD Concepts 31 [input.output] Input/Output library not concept enabled Yes 1142⁽ⁱ⁾ NAD Concepts 28.6 [re] Regular expressions library not concept enabled Yes 1143⁽ⁱ⁾ Resolved 32.5 [atomics] Atomic operations library not concept enabled Yes 1144⁽ⁱ⁾ C++11 17.5 [support.start.term] "thread safe" is undefined Yes 1145⁽ⁱ⁾ Resolved 32.5 [atomics] Inappropriate headers for atomics Yes 1146⁽ⁱ⁾ Resolved 32.5.5 [atomics.lockfree] "lockfree" does not say enough Yes 1147⁽ⁱ⁾ Resolved 32.5.8.2 [atomics.types.operations] Non-volatile atomic functions Yes 1148⁽ⁱ⁾ NAD 31.7 [iostream.format] Wrong argument type of I/O stream manipulators setprecision() and setw() Yes 1149⁽ⁱ⁾ NAD Concepts 99 [rand.concept.urng] Reformulating NonemptyRange axiom Yes 1150⁽ⁱ⁾ Resolved 31.10.6 [fstream] wchar_t, char16_t and char32_t filenames Yes 1151⁽ⁱ⁾ Resolved 16 [library] Behavior of the library in the presence of threads is incompletely specified Yes 1152⁽ⁱ⁾ C++11 28.3.4.3.3.3 [facet.num.put.virtuals] Expressions parsed differently than intended Yes 1153⁽ⁱ⁾ NAD 16 [library] Standard library needs review for constructors to be explicit to avoid treatment as initializer-list constructor Yes 1154⁽ⁱ⁾ NAD 29.4 [complex.numbers] complex should accept integral types Yes 1155⁽ⁱ⁾ NAD Editorial C.8 [diff.library] Reference should be to C99 Yes 1156⁽ⁱ⁾ NAD 16.3.3.3.2 [enumerated.types] Constraints on bitmask and enumeration types to be tightened Yes 1157⁽ⁱ⁾ C++11 16.4.5.2.1 [namespace.std] Local types can now instantiate templates Yes 1158⁽ⁱ⁾ C++11 32.2.4 [thread.req.timing] Encouragement to use monotonic clock Yes 1159⁽ⁱ⁾ C++11 32.6.5.4.3 [thread.lock.unique.locking] Unclear spec for resource_deadlock_would_occur Yes 1219 1160⁽ⁱ⁾ Resolved 32.10.4 [futures.future.error] future_error public constructor is 'exposition only' Yes 1161⁽ⁱ⁾ Resolved 32.10.7 [futures.unique.future] Unnecessary unique_future limitations Yes 1162⁽ⁱ⁾ Resolved 32.10.8 [futures.shared.future] shared_future should support an efficient move constructor Yes 1163⁽ⁱ⁾ Resolved 32.10.8 [futures.shared.future] shared_future is inconsistent with shared_ptr Yes 1164⁽ⁱ⁾ NAD 32.10.6 [futures.promise] promise::swap should pass by rvalue reference Yes 1165⁽ⁱ⁾ Resolved 32.10.6 [futures.promise] Unneeded promise move constructor Yes 1166⁽ⁱ⁾ Resolved 99 [allocator.propagation] Allocator-specific move/copy break model of move-constructor and move-assignment Yes 1167⁽ⁱ⁾ NAD Concepts 22.3 [pairs] pair<T,U> doesn't model LessThanComparable in unconstrained code even if T and U do. Yes 1168⁽ⁱ⁾ NAD Editorial 22.9.2.3 [bitset.members] Odd wording for bitset equality operators Yes 1169⁽ⁱ⁾ C++17 28.3.4.3.2.3 [facet.num.get.virtuals] num_get not fully compatible with strto* Yes 3 1170⁽ⁱ⁾ C++11 27.1 [strings.general] String char-like types no longer PODs Yes 1171⁽ⁱ⁾ C++11 30.5 [time.duration] duration types should be literal Yes 1172⁽ⁱ⁾ Resolved 99 [allocator.concepts.members] select_on_container_(copy|move)_construction over-constrained Yes 1173⁽ⁱ⁾ NAD 16 [library] "Equivalence" wishy-washiness Yes 3 1174⁽ⁱ⁾ Resolved 21.3.6.4 [meta.unary.prop] Type property predicates Yes 1175⁽ⁱ⁾ Open 23.2.8 [unord.req] unordered complexity Yes 3 1176⁽ⁱ⁾ NAD 32.4.3.3 [thread.thread.constr] Make thread constructor non-variadic Yes 1177⁽ⁱ⁾ C++11 30.5 [time.duration] Improve "diagnostic required" wording Yes 1178⁽ⁱ⁾ C++11 16.4.6.2 [res.on.headers] Header dependencies Yes 1179⁽ⁱ⁾ NAD Editorial 16.3.2.4 [structure.specifications] Probably editorial in [structure.specifications] Yes 1180⁽ⁱ⁾ C++11 28.6.8.2 [re.submatch.members] Missing string_type member typedef in class sub_match Yes 1181⁽ⁱ⁾ C++11 28.6.8.3 [re.submatch.op] Invalid sub_match comparison operators Yes 1182⁽ⁱ⁾ C++11 22.10.19 [unord.hash] Unfortunate hash dependencies Yes 1183⁽ⁱ⁾ C++11 31.5.4.3 [basic.ios.members] basic_ios::set_rdbuf may break class invariants Yes 1184⁽ⁱ⁾ NAD 23.3.13 [vector] Feature request: dynamic bitset Yes 1185⁽ⁱ⁾ Resolved 24.3 [iterator.requirements] Iterator categories and output iterators Yes 1186⁽ⁱ⁾ NAD Concepts 23.6.6 [stack] Forward list could model a stack Yes 1187⁽ⁱ⁾ C++11 21.3.9.7 [meta.trans.other] std::decay Yes 1188⁽ⁱ⁾ NAD 23.2.8 [unord.req] Unordered containers should have a minimum load factor as well as a maximum Yes 1189⁽ⁱ⁾ C++11 23.2.8 [unord.req] Awkward interface for changing the number of buckets in an unordered associative container Yes 1190⁽ⁱ⁾ NAD 23.2.8 [unord.req] Setting the maximum load factor should return the previous value Yes 1191⁽ⁱ⁾ C++11 22.4.8 [tuple.elem] tuple get API should respect rvalues Yes 1192⁽ⁱ⁾ C++11 27.4.3.4 [string.iterators] basic_string missing definitions for cbegin / cend / crbegin / crend Yes 1193⁽ⁱ⁾ C++11 20.3.1.2 [unique.ptr.dltr] default_delete cannot be instantiated with incomplete types Yes 1194⁽ⁱ⁾ C++11 23.6 [container.adaptors] Unintended queue constructor Yes 1195⁽ⁱ⁾ C++11 16 [library] "Diagnostic required" wording is insufficient to prevent UB Yes 1196⁽ⁱ⁾ Resolved 23.6.4.2 [priqueue.cons] move semantics undefined for priority_queue Yes 1197⁽ⁱ⁾ C++11 23.2.8 [unord.req] Can unordered containers have bucket_count() == 0? Yes 1198⁽ⁱ⁾ C++11 23.6 [container.adaptors] Container adaptor swap: member or non-member? Yes 1199⁽ⁱ⁾ C++11 23.6 [container.adaptors] Missing extended copy constructor in container adaptors Yes 1200⁽ⁱ⁾ NAD 27.2.3 [char.traits.typedefs] "surprising" char_traits<T>::int_type requirements Yes 1201⁽ⁱ⁾ Resolved 22.4.5 [tuple.creation] Do we always want to unwrap ref-wrappers in make_tuple Yes 1202⁽ⁱ⁾ NAD 21.3.4 [meta.help] integral_constant needs a spring clean Yes 1203⁽ⁱ⁾ C++20 31.7.6.6 [ostream.rvalue] More useful rvalue stream insertion Yes 2 1204⁽ⁱ⁾ C++11 16.4.5.9 [res.on.arguments] Global permission to move Yes 1205⁽ⁱ⁾ C++11 26 [algorithms] Some algorithms could more clearly document their handling of empty ranges Yes 1206⁽ⁱ⁾ C++11 26.7.2 [alg.move] Incorrect requires for move_backward and copy_backward Yes 1207⁽ⁱ⁾ C++11 23.3.11.5 [list.ops] Underspecified std::list operations? Yes 1208⁽ⁱ⁾ C++11 29.6.2.2 [valarray.cons] valarray initializer_list constructor has incorrect effects Yes 1209⁽ⁱ⁾ C++11 28.6.9.2 [re.results.const] match_results should be moveable Yes 1210⁽ⁱ⁾ Resolved 24.3 [iterator.requirements] Iterator reachability should not require a container Yes 1211⁽ⁱ⁾ Resolved 24.5.4.2 [move.iterator] Move iterators should be restricted as input iterators Yes 1212⁽ⁱ⁾ Resolved 24.3 [iterator.requirements] result of post-increment/decrement operator Yes 1213⁽ⁱ⁾ Open 24.3 [iterator.requirements] Meaning of valid and singular iterator underspecified No 4 1214⁽ⁱ⁾ C++14 23.2.7 [associative.reqmts] Insufficient/inconsistent key immutability requirements for associative containers Yes 1215⁽ⁱ⁾ C++11 23.3.11.5 [list.ops] list::merge with unequal allocators Yes 1216⁽ⁱ⁾ C++11 17.9.8 [except.nested] LWG 1066 Incomplete? Yes 1217⁽ⁱ⁾ NAD 29.4 [complex.numbers] Quaternion support Yes 1218⁽ⁱ⁾ C++11 32.6.4 [thread.mutex.requirements] mutex destructor synchronization Yes 1219⁽ⁱ⁾ Dup 32.6.5.4.3 [thread.lock.unique.locking] unique_lock::lock and resource_deadlock_would_occur Yes 1159 1220⁽ⁱ⁾ C++11 32.7 [thread.condition] What does condition_variable wait on? Yes 1221⁽ⁱ⁾ C++11 32.7.4 [thread.condition.condvar] condition_variable wording Yes 1222⁽ⁱ⁾ C++11 32.7 [thread.condition] condition_variable incorrect effects for exception safety Yes 1223⁽ⁱ⁾ NAD 32.7.5 [thread.condition.condvarany] condition_variable_any lock matching? Yes 1224⁽ⁱ⁾ NAD 32.7.5 [thread.condition.condvarany] condition_variable_any support for recursive mutexes? Yes 1225⁽ⁱ⁾ Resolved 99 [func.ret] C++0x result_of issue Yes 1226⁽ⁱ⁾ Resolved 32.10.3 [futures.errors] Incomplete changes of #890 Yes 1227⁽ⁱ⁾ C++11 22.9.2 [template.bitset] <bitset> synopsis overspecified Yes 1228⁽ⁱ⁾ NAD 21.3.6.4 [meta.unary.prop] User-specialized nothrow type traits Yes 1229⁽ⁱ⁾ Resolved 19.5.4.3 [syserr.errcode.modifiers] error_code operator= typo Yes 1230⁽ⁱ⁾ Dup 22.10.16 [func.memfn] mem_fn and variadic templates Yes 920 1231⁽ⁱ⁾ C++11 20.3.2.3.6 [util.smartptr.weak.obs] weak_ptr comparisons incompletely resolved Yes 1232⁽ⁱ⁾ NAD Editorial 16 [library] Still swap's with rvalue-references Yes 1233⁽ⁱ⁾ NAD Editorial 20.2 [memory] Missing unique_ptr signatures in synopsis Yes 1234⁽ⁱ⁾ C++11 23.2.4 [sequence.reqmts] "Do the right thing" and NULL Yes 1235⁽ⁱ⁾ NAD 29.5.3.6 [rand.req.dist] Issue with C++0x random number proposal Yes 1236⁽ⁱ⁾ NAD 16 [library] reserved identifiers in programs not using the library Yes 1237⁽ⁱ⁾ C++11 19.5 [syserr] Constrained error_code/error_condition members Yes 1238⁽ⁱ⁾ Open 26 [algorithms] Defining algorithms taking iterator for range No 3 1239⁽ⁱ⁾ NAD Editorial 21.3.6.4 [meta.unary.prop] Defect report Yes 1240⁽ⁱ⁾ C++11 22.10.17.3 [func.wrap.func] Deleted comparison functions of std::function not needed Yes 1241⁽ⁱ⁾ C++11 26.7.9 [alg.unique] unique_copy needs to require EquivalenceRelation Yes 1242⁽ⁱ⁾ NAD 23 [containers] Enable SCARY iterators Yes 1243⁽ⁱ⁾ NAD 29.6.2.7 [valarray.cassign] Missing operator+= (initializer_list<T>) for valarray Yes 1244⁽ⁱ⁾ Resolved 32.10 [futures] wait_*() in *future for synchronous functions Yes 1245⁽ⁱ⁾ C++11 22.10.19 [unord.hash] std::hash<string> & co Yes 1246⁽ⁱ⁾ NAD 23.3.13.3 [vector.capacity] vector::resize() missing efficiency guarantee Yes 1247⁽ⁱ⁾ C++11 99 [auto.ptr] auto_ptr is overspecified Yes 1248⁽ⁱ⁾ Resolved 23.5 [unord] Equality comparison for unordered containers Yes 1249⁽ⁱ⁾ C++11 31.5.4.2 [basic.ios.cons] basic_ios default ctor Yes 1250⁽ⁱ⁾ C++11 22.9.2 [template.bitset] <bitset> still overspecified Yes 1251⁽ⁱ⁾ NAD 31.8.2.2 [stringbuf.cons] move constructing basic_stringbuf Yes 1252⁽ⁱ⁾ C++11 99 [depr.conversions.buffer] wbuffer_convert::state_type inconsistency Yes 1253⁽ⁱ⁾ C++11 23.2.7 [associative.reqmts] invalidation of iterators and emplace vs. insert inconsistence in assoc. containers Yes 1254⁽ⁱ⁾ C++11 23.3.14 [vector.bool] Misleading sentence in vector<bool>::flip Yes 1255⁽ⁱ⁾ C++11 22.2 [utility] declval should be added to the library Yes 1256⁽ⁱ⁾ C++11 20.3.2.3 [util.smartptr.weak] weak_ptr comparison functions should be removed Yes 1257⁽ⁱ⁾ C++11 31.5 [iostreams.base] Header <ios> still contains a concept_map Yes 1258⁽ⁱ⁾ Resolved 22.10.17.3.3 [func.wrap.func.mod] std::function Effects clause impossible to satisfy Yes 1259⁽ⁱ⁾ NAD 23.2.4 [sequence.reqmts] Should initializer-list constructors move elements? Yes 1260⁽ⁱ⁾ Resolved 21.3.6.4 [meta.unary.prop] is_constructible<int*,void*> reports true Yes 1261⁽ⁱ⁾ C++11 27.4.5 [string.conversions] Insufficent overloads for to_string / to_wstring Yes 1262⁽ⁱ⁾ C++11 20.3.2.2.8 [util.smartptr.shared.cmp] std::less<std::shared_ptr<T>> is underspecified Yes 1263⁽ⁱ⁾ NAD 28.6.3 [re.syn] missing swap overloads for regex Yes 1264⁽ⁱ⁾ C++11 16.4.2.5 [compliance] quick_exit support for freestanding implementations Yes 1265⁽ⁱ⁾ NAD 17.14 [support.runtime] longjmp and destructors Yes 1266⁽ⁱ⁾ Resolved 32.10.8 [futures.shared.future] shared_future::get and deferred async functions Yes 1267⁽ⁱ⁾ C++11 32.7.5 [thread.condition.condvarany] Incorrect wording for condition_variable_any::wait_for Yes 1268⁽ⁱ⁾ Resolved 32.6 [thread.mutex] The Mutex requirements in 30.4.1 and 30.4.2 are wrong Yes 1269⁽ⁱ⁾ Resolved 32.10.5 [futures.state] Associated state doesn't account for async Yes 1270⁽ⁱ⁾ C++11 99 [func.ret] result_of should be moved to <type_traits> Yes 1271⁽ⁱ⁾ C++11 30.5.6 [time.duration.nonmember] CR undefined in duration operators Yes 1272⁽ⁱ⁾ Resolved 32.10.6 [futures.promise] confusing declarations of promise::set_value Yes 1273⁽ⁱ⁾ Resolved 32.10.7 [futures.unique.future] future::valid should be callable on an invalid future Yes 1274⁽ⁱ⁾ Resolved 99 [futures.atomic_future] atomic_future constructor Yes 1275⁽ⁱ⁾ Resolved 32.10 [futures] Creating and setting futures Yes 1276⁽ⁱ⁾ C++11 23.3.7 [forward.list] forwardlist missing allocator constructors Yes 1277⁽ⁱ⁾ C++11 32.4.3.2 [thread.thread.id] std::thread::id should be trivially copyable Yes 1278⁽ⁱ⁾ C++11 23.3.7.5 [forward.list.modifiers] Inconsistent return values for forward_list::insert_after Yes 1279⁽ⁱ⁾ C++11 99 [depr.base] forbid [u|bi]nary_function specialization Yes 1280⁽ⁱ⁾ C++11 24.6.2.2 [istream.iterator.cons] Initialization of stream iterators Yes 1281⁽ⁱ⁾ Resolved 21.5.3 [ratio.ratio] CopyConstruction and Assignment between ratios having the same normalized form Yes 1282⁽ⁱ⁾ NAD 26 [algorithms] A proposal to add std::split algorithm Yes 1283⁽ⁱ⁾ Resolved 16.4.4.2 [utility.arg.requirements] MoveConstructible and MoveAssignable need clarification of moved-from state Yes 1284⁽ⁱ⁾ C++11 23.3.14 [vector.bool] vector<bool> initializer_list constructor missing an allocator argument Yes 1285⁽ⁱ⁾ C++11 20.2.9.3 [allocator.traits.members] allocator_traits call to new Yes 1286⁽ⁱ⁾ C++11 20.2.9.3 [allocator.traits.members] allocator_traits::select_on_container_copy_construction type-o Yes 1287⁽ⁱ⁾ C++11 22.10.17.3.2 [func.wrap.func.con] std::function requires CopyConstructible target object Yes 1288⁽ⁱ⁾ C++11 22.10.17.3.2 [func.wrap.func.con] std::function assignment from rvalues Yes 1289⁽ⁱ⁾ NAD 22.2 [utility] Generic casting requirements for smart pointers Yes 1290⁽ⁱ⁾ Resolved 22.10 [function.objects] Don't require [u|bi]nary_function inheritance Yes 1291⁽ⁱ⁾ Resolved 32.10.6 [futures.promise] Exceptions thrown during promise::set_value Yes 1292⁽ⁱ⁾ C++11 22.10.17.3.2 [func.wrap.func.con] std::function should support all callable types Yes 1293⁽ⁱ⁾ Resolved 20.3.1.4 [unique.ptr.runtime] unique_ptr<T[], D> needs to get rid of unspecified-pointer-type Yes 1294⁽ⁱ⁾ C++11 22.10.4 [func.require] Difference between callable wrapper and forwarding call wrapper unclear Yes 1295⁽ⁱ⁾ C++11 22.10.4 [func.require] Contradictory call wrapper requirements Yes 1296⁽ⁱ⁾ NAD 23.4.3 [map] map and multimap value_compare overspecified Yes 1297⁽ⁱ⁾ Resolved 20.3.1.6 [unique.ptr.special] unique_ptr's relational operator functions should induce a total order Yes 1298⁽ⁱ⁾ C++11 28.3.2 [locale.syn] Missing specialization of ctype_byname<char> Yes 1299⁽ⁱ⁾ C++11 31.7.8 [ext.manip] Confusing typo in specification for get_time Yes 1300⁽ⁱ⁾ Resolved 32.10.6 [futures.promise] Circular definition of promise::swap Yes 1301⁽ⁱ⁾ NAD Editorial 23.2.4 [sequence.reqmts] clear() and assignment Yes 1302⁽ⁱ⁾ NAD 23.2.7 [associative.reqmts] different emplace semantics for sequence and associated containers Yes 1303⁽ⁱ⁾ C++11 20.3.1.3 [unique.ptr.single] shared_ptr, unique_ptr, and rvalue references v2 Yes 1304⁽ⁱ⁾ Resolved 32.10.8 [futures.shared.future] Missing preconditions for shared_future Yes 1305⁽ⁱ⁾ Resolved 99 [futures.atomic_future] preconditions for atomic_future Yes 1306⁽ⁱ⁾ C++11 23.3.3 [array] pointer and const_pointer for <array> Yes 1307⁽ⁱ⁾ Resolved 17.9.7 [propagation] exception_ptr and allocator pointers don't understand != Yes 1308⁽ⁱ⁾ NAD 26.8.9 [alg.min.max] Concerns about initializer_list overloads of min, max, and minmax Yes 1309⁽ⁱ⁾ C++11 16.4.4.2 [utility.arg.requirements] Missing expressions for Move/CopyConstructible Yes 1310⁽ⁱ⁾ C++11 23.3.7.6 [forward.list.ops] forward_list splice_after from lvalues Yes 1311⁽ⁱ⁾ Resolved 24.3.5.5 [forward.iterators] multi-pass property of Forward Iterator underspecified Yes 1312⁽ⁱ⁾ C++11 23.3.13.4 [vector.data] vector::data no longer returns a raw pointer Yes 1313⁽ⁱ⁾ NAD 29.5.8.1 [rand.util.seedseq] Seed sequence's param function not useful for pure output iterator Yes 1314⁽ⁱ⁾ NAD 17.2 [support.types] NULL and nullptr Yes 1315⁽ⁱ⁾ NAD Editorial 32.10.9 [futures.async] return type of async Yes 1316⁽ⁱ⁾ C++11 20.6 [allocator.adaptor] scoped_allocator_adaptor operator== has no definition Yes 1317⁽ⁱ⁾ NAD 22.10.19 [unord.hash] make_hash Yes 1318⁽ⁱ⁾ NAD 20.2.9.2 [allocator.traits.types] N2982 removes previous allocator capabilities Yes 1375 1319⁽ⁱ⁾ C++11 23.2.2 [container.requirements.general] Containers should require an iterator that is at least a Forward Iterator Yes 1320⁽ⁱ⁾ NAD 24.2 [iterator.synopsis] Header for iter_swap Yes 1321⁽ⁱ⁾ Resolved 20.6.4 [allocator.adaptor.members] scoped_allocator_adaptor construct and destroy don't use allocator_traits Yes 1322⁽ⁱ⁾ Resolved 16.4.4.2 [utility.arg.requirements] Explicit CopyConstructible requirements are insufficient Yes 1323⁽ⁱ⁾ C++11 27.4.3.7.6 [string.replace] basic_string::replace should use const_iterator Yes 1324⁽ⁱ⁾ Resolved 22.3.2 [pairs.pair] Still too many implicit conversions for pair and tuple Yes 1325⁽ⁱ⁾ C++11 22.9.2.2 [bitset.cons] bitset Yes 1326⁽ⁱ⁾ Resolved 22.3.2 [pairs.pair] Missing/wrong preconditions for pair and tuple functions Yes 1327⁽ⁱ⁾ Resolved 29.7 [c.math] templates defined in <cmath> replacing C macros with the same name Yes 1328⁽ⁱ⁾ Resolved 31.7.5.2.4 [istream.sentry] istream extractors not setting failbit if eofbit is already set Yes 1329⁽ⁱ⁾ Resolved 23.2.3 [container.requirements.dataraces] Data races on vector<bool> Yes 1330⁽ⁱ⁾ NAD 23.2 [container.requirements] Move container requirements into requirements tables Yes 1331⁽ⁱ⁾ NAD 16 [library] incorporate move special member functions into library Yes 1332⁽ⁱ⁾ C++11 16.4.4.5 [hash.requirements] Let Hash objects throw! Yes 1333⁽ⁱ⁾ C++11 22.10.17.3.5 [func.wrap.func.inv] Missing forwarding during std::function invocation Yes 1334⁽ⁱ⁾ C++11 24.5.2.2.2 [back.insert.iter.ops] Insert iterators are broken for some proxy containers compared to C++03 Yes 1335⁽ⁱ⁾ C++11 22.4.9 [tuple.rel] Insufficient requirements for tuple::operator<() Yes 1337⁽ⁱ⁾ C++11 28.6.6 [re.traits] Swapped arguments in regex_traits::isctype Yes 1338⁽ⁱ⁾ C++11 26.6.15 [alg.search] LWG 1205 incorrectly applied Yes 1339⁽ⁱ⁾ C++11 26.11.7 [uninitialized.fill] uninitialized_fill_n should return the end of its range Yes 1340⁽ⁱ⁾ C++11 23.3.7.5 [forward.list.modifiers] Why does forward_list::resize take the object to be copied by value? Yes 1344⁽ⁱ⁾ Resolved 16 [library] Replace throw() with noexcept Yes 1351 1345⁽ⁱ⁾ Resolved 16 [library] Library classes should have noexcept move operations Yes 1346⁽ⁱ⁾ Resolved 16 [library] Apply noexcept where library specification does not permit exceptions Yes 1352 1347⁽ⁱ⁾ Resolved 16 [library] Apply noexcept judiciously throughout the library Yes 1348⁽ⁱ⁾ NAD 16 [library] Exception safety of unspecified types Yes 1349⁽ⁱ⁾ C++11 16 [library] swap should not throw Yes 1350⁽ⁱ⁾ Dup 16 [library] Implicit contructors accidentally made some library types move-only Yes 1421 1351⁽ⁱ⁾ Dup 16 [library] Replace dynamic exception specifications with noexcept Yes 1344 1352⁽ⁱ⁾ Dup 16 [library] Apply noexcept where library specification says "Throws: Nothing" Yes 1346 1353⁽ⁱ⁾ Resolved 16 [library] Clarify the state of a moved-from object Yes 1354⁽ⁱ⁾ C++11 3.16 [defns.deadlock] The definition of deadlock excludes cases involving a single thread Yes 1355⁽ⁱ⁾ Resolved 99 [defns.move.assign.op] The definition of move-assignment operator is redundant Yes 1356⁽ⁱ⁾ Resolved 99 [defns.move.ctor] The definition of move-constructor is redundant Yes 1357⁽ⁱ⁾ Resolved 16.3.3.3.3 [bitmask.types] Library bitmask types to not satisfy the bimask type requirements Yes 1358⁽ⁱ⁾ NAD 16.4.2.5 [compliance] Add <chrono> and <ratio> to freestanding implementations Yes 1359⁽ⁱ⁾ NAD 16.4.2.5 [compliance] Add <tuple> and <utility> to freestanding implementations Yes 1360⁽ⁱ⁾ C++11 16.4.2.5 [compliance] Add <atomic> to free-standing implementations Yes 1361⁽ⁱ⁾ NAD 16.4.3 [using] Does use of std::size_t in a header imply that typedef name is available to users? Yes 1362⁽ⁱ⁾ C++11 16.4.5.9 [res.on.arguments] Description of binding to rvalue-references should use the new 'xvalue' vocabulary Yes 1363⁽ⁱ⁾ C++11 17.2 [support.types] offsetof should be marked noexcept Yes 1364⁽ⁱ⁾ Resolved 17.9.7 [propagation] It is not clear how exception_ptr is synchronized Yes 1365⁽ⁱ⁾ Resolved 17.6.4 [alloc.errors] Thread-safety of handler functions Yes 1366⁽ⁱ⁾ Resolved 17.6.3.5 [new.delete.dataraces] New-handler and data races Yes 1367⁽ⁱ⁾ C++11 99 [exception.unexpected] Deprecate library support for checking dynamic exception specifications Yes 1368⁽ⁱ⁾ C++11 99 [depr.uncaught] Thread safety of std::uncaught_exception() Yes 1369⁽ⁱ⁾ NAD 17.9.7 [propagation] rethrow_exception may introduce data races Yes 1370⁽ⁱ⁾ C++11 17.9.8 [except.nested] throw_with_nested should not use perfect forwarding Yes 1371⁽ⁱ⁾ NAD 19 [diagnostics] Standard exceptions require stronger no-throw guarantees Yes 1372⁽ⁱ⁾ C++11 19.5.3.5 [syserr.errcat.objects] Adopt recommended practice for standard error categories Yes 1373⁽ⁱ⁾ NAD 22.2 [utility] Customizable traits should have their own headers Yes 1374⁽ⁱ⁾ NAD 16.4.4.2 [utility.arg.requirements] Clarify moved-from objects are "toxic" Yes 1375⁽ⁱ⁾ Dup 16.4.4.6 [allocator.requirements] reference_type should not have been removed from the allocator requirements Yes 1318 1376⁽ⁱ⁾ NAD 16.4.4.6 [allocator.requirements] Allocator interface is not backward compatible Yes 1377⁽ⁱ⁾ Resolved 22.2 [utility] The revised forward is not compatible with access-control Yes 1378⁽ⁱ⁾ Resolved 22.3 [pairs] pair and tuple have too many conversions Yes 1379⁽ⁱ⁾ Resolved 22.3.2 [pairs.pair] pair copy-assignment not consistent for references Yes 1380⁽ⁱ⁾ Resolved 22.3 [pairs] pair and tuple of references need to better specify move-semantics Yes 1381⁽ⁱ⁾ C++11 99 [pair.range] Replace pair's range support by proper range facility Yes 1382⁽ⁱ⁾ Resolved 22.3 [pairs] pair and tuple constructors should forward arguments Yes 1383⁽ⁱ⁾ Resolved 22.3 [pairs] Inconsistent defaulted move/copy members in pair and tuple Yes 1384⁽ⁱ⁾ C++11 22.4.5 [tuple.creation] Function pack_arguments is poorly named Yes 1385⁽ⁱ⁾ C++11 22.4.5 [tuple.creation] tuple_cat should be a single variadic signature Yes 1386⁽ⁱ⁾ C++11 22.4.5 [tuple.creation] pack_arguments overly complex Yes 1387⁽ⁱ⁾ C++11 99 [tuple.range] Range support by tuple should be removed Yes 1388⁽ⁱ⁾ C++11 21.5.3 [ratio.ratio] LWG 1281 incorrectly accepted Yes 1389⁽ⁱ⁾ Resolved 21.5.4 [ratio.arithmetic] Compile-time rational arithmetic and overflow Yes 1390⁽ⁱ⁾ Resolved 21 [meta] Limit speculative compilation for constructible/convertible traits Yes 1391⁽ⁱ⁾ Resolved 21 [meta] constructible/convertible traits and access control Yes 1392⁽ⁱ⁾ Resolved 21.3.6 [meta.unary] result_of should support pointer-to-data-member Yes 1393⁽ⁱ⁾ Resolved 21.3.6.4 [meta.unary.prop] Trivial traits imply noexcept Yes 1394⁽ⁱ⁾ Resolved 21.3.6.4 [meta.unary.prop] is_constructible reports false positives Yes 1395⁽ⁱ⁾ NAD Editorial 21.3.8 [meta.rel] Inconsistent reference links should be unified Yes 1396⁽ⁱ⁾ NAD 28.6.7 [re.regex] regex should support allocators Yes 1451 1397⁽ⁱ⁾ Resolved 22.10 [function.objects] Deprecate '98 binders Yes 1398⁽ⁱ⁾ NAD 22.10 [function.objects] Users should be able to specialize functors without depending on whole <functional> header Yes 1399⁽ⁱ⁾ C++11 22.10.17.3 [func.wrap.func] function does not need an explicit default constructor Yes 1400⁽ⁱ⁾ C++11 22.10.17.3.2 [func.wrap.func.con] FCD function does not need an explicit default constructor Yes 1401⁽ⁱ⁾ C++11 20.2 [memory] Provide support for unique_ptr<T> == nullptr Yes 1402⁽ⁱ⁾ C++11 20.2 [memory] nullptr constructors for smart pointers should be constexpr Yes 1403⁽ⁱ⁾ C++11 20.2.7 [allocator.tag] Inconsistent definitions for allocator_arg Yes 1404⁽ⁱ⁾ C++11 20.2.3 [pointer.traits] pointer_traits should have a size_type member Yes 1405⁽ⁱ⁾ Resolved 20.6 [allocator.adaptor] Move scoped_allocator_adaptor into separate header Yes 1406⁽ⁱ⁾ NAD 20.3.2.2 [util.smartptr.shared] Support hashing smart-pointers based on owner Yes 1407⁽ⁱ⁾ Resolved 20.3.2.2.2 [util.smartptr.shared.const] Synch shared_ptr constructors taking movable types Yes 1408⁽ⁱ⁾ C++11 99 [util.dynamic.safety] Allow recycling of pointers after undeclare_no_pointers Yes 1409⁽ⁱ⁾ Resolved 99 [time.clock.monotonic] Specify whether monotonic_clock is a distinct type or a typedef Yes 1410⁽ⁱ⁾ Resolved 99 [time.clock.monotonic] Add a feature-detect macro for monotonic_clock Yes 1411 1411⁽ⁱ⁾ Dup 99 [time.clock.monotonic] Add a compile-time flag to detect monotonic_clock Yes 1410 1412⁽ⁱ⁾ Resolved 99 [time.clock.monotonic] Make monotonic clocks mandatory Yes 1413⁽ⁱ⁾ NAD 30.7.8 [time.clock.hires] Specify whether high_resolution_clock is a distinct type or a typedef Yes 1414⁽ⁱ⁾ C++11 27.2.4.4 [char.traits.specializations.char16.t] Fixing remaining dead links to POS_T and OFF_T Yes 1444 1415⁽ⁱ⁾ NAD Editorial 23.2.2 [container.requirements.general] Iterator stability bans the short-string optimization Yes 1416⁽ⁱ⁾ C++11 23.2 [container.requirements] forward_list::erase_after should not be allowed to throw Yes 1417⁽ⁱ⁾ C++11 23.3.3.5 [array.zero] front/back on a zero-sized array should be undefined Yes 1418⁽ⁱ⁾ C++11 23.3.5.3 [deque.capacity] Effects of resize(size()) on a deque Yes 1419⁽ⁱ⁾ NAD Editorial 23.3.7 [forward.list] forward_list::erase_after should return an iterator Yes 1420⁽ⁱ⁾ C++11 23.3.11.3 [list.capacity] Effects of resize(size()) on a list Yes 1421⁽ⁱ⁾ Resolved 23.6 [container.adaptors] Accidental move-only library types due to new core language rules Yes 1350 1422⁽ⁱ⁾ Open 23.3.14 [vector.bool] vector<bool> iterators are not random access No 3 1423⁽ⁱ⁾ C++11 23.4.3 [map] map constructor accepting an allocator as single parameter should be explicit Yes 1424⁽ⁱ⁾ C++11 23.4.4 [multimap] multimap constructor accepting an allocator as a single parameter should be explicit Yes 1425⁽ⁱ⁾ C++11 23.4.6 [set] set constructor accepting an allocator as a single parameter should be explicit Yes 1426⁽ⁱ⁾ C++11 23.4.7 [multiset] multiset constructor accepting an allocator as a single parameter should be explicit Yes 1427⁽ⁱ⁾ C++11 23.5.3 [unord.map] unordered_map constructor accepting an allocator as a single parameter should be explicit Yes 1428⁽ⁱ⁾ C++11 23.5.4 [unord.multimap] unordered_multimap constructor accepting an allocator as a single parameter should be explicit Yes 1429⁽ⁱ⁾ C++11 23.5.6 [unord.set] unordered_set constructor accepting an allocator as a single parameter should be explicit Yes 1430⁽ⁱ⁾ C++11 23.5.7 [unord.multiset] unordered_multiset constructor accepting an allocator as a single parameter should be explicit Yes 1431⁽ⁱ⁾ C++11 26.6.14 [alg.is.permutation] is_permutation must be more restrictive Yes 1432⁽ⁱ⁾ C++11 26.7.13 [alg.random.shuffle] random_shuffle signatures are inconsistent Yes 1433 1433⁽ⁱ⁾ Dup 26.7.13 [alg.random.shuffle] random_shuffle and shuffle should have consistent signatures Yes 1432 1434⁽ⁱ⁾ NAD Editorial 26.8.9 [alg.min.max] For min/max functions replace variadic arguments by initializer_list argument Yes 1435⁽ⁱ⁾ C++11 29.4.7 [complex.value.ops] Unclear returns specifications for C99 complex number functions Yes 1436⁽ⁱ⁾ C++11 29.5.4 [rand.eng] Random number engine constructor concerns Yes 1437⁽ⁱ⁾ C++11 29.5.4.3 [rand.eng.mers] Mersenne twister meaningless for word sizes less than two Yes 1438⁽ⁱ⁾ C++11 29.5.5.2 [rand.adapt.disc] No definition for base() Yes 1439⁽ⁱ⁾ C++11 29.5.9.6.2 [rand.dist.samp.pconst] Return from densities() functions? Yes 1440⁽ⁱ⁾ C++11 29.5.9.6.3 [rand.dist.samp.plinear] Incorrect specification for piecewise_linear_distribution Yes 1441⁽ⁱ⁾ C++11 29.7 [c.math] Floating-point test functions are incorrectly specified Yes 1442⁽ⁱ⁾ NAD Editorial 32 [thread] "happens-before" should be "synchronizes-with" Yes 1443 1443⁽ⁱ⁾ Dup 32 [thread] Imposed happens-before edges are not made transitive Yes 1442 1444⁽ⁱ⁾ Dup 31.5.3.3 [fpos.operations] OFF_T is not defined Yes 1414 1445⁽ⁱ⁾ Resolved 31.7 [iostream.format] Several iostreams member functions incorrectly specified Yes 1446⁽ⁱ⁾ NAD 31.7 [iostream.format] Move and swap for I/O streams Yes 1447⁽ⁱ⁾ Resolved 31.7 [iostream.format] Request to resolve issue LWG 1328 Yes 1448⁽ⁱ⁾ C++11 31.8.2.4 [stringbuf.members] Concerns about basic_stringbuf::str(basic_string) postconditions Yes 1449⁽ⁱ⁾ C++11 31.8.3 [istringstream] Incomplete specification of header <cinttypes> Yes 1450⁽ⁱ⁾ C++14 28.6.4.3 [re.matchflag] Contradiction in regex_constants Yes 3 1451⁽ⁱ⁾ Dup 28.6.7 [re.regex] regex should support allocators Yes 1396 1452⁽ⁱ⁾ NAD 28.6.9.5 [re.results.acc] "target sequence" is not defined Yes 1453⁽ⁱ⁾ Resolved 28.6.9.5 [re.results.acc] Default constructed match_results behavior for certain operations Yes 1454⁽ⁱ⁾ Dup 32.5 [atomics] Ensure C compatibility for atomics Yes 1455 1455⁽ⁱ⁾ Resolved 32.5 [atomics] C language compatibility for atomics Yes 1454 1456⁽ⁱ⁾ NAD 32.5 [atomics] Missing fixed-size atomic_ typedefs Yes 1457⁽ⁱ⁾ Resolved 32.5.2 [atomics.syn] Splitting lock-free properties Yes 1458⁽ⁱ⁾ Dup 32.5.4 [atomics.order] Overlapping evaluations are allowed Yes 1459 1459⁽ⁱ⁾ LEWG 32.5.4 [atomics.order] Overlapping evaluations are allowed No 1458 1460⁽ⁱ⁾ Resolved 32.5.5 [atomics.lockfree] Missing lock-free property for type bool should be added Yes 1461⁽ⁱ⁾ NAD 32.5 [atomics] Rename all ATOMIC_* macros as STD_ATOMIC_* Yes 1462⁽ⁱ⁾ Resolved 99 [atomics.types.integral] Ambiguous value assignment to atomic_bool Yes 1463 1463⁽ⁱ⁾ Dup 99 [atomics.types.integral] Inconsistent value assignment for atomic_bool Yes 1462 1464⁽ⁱ⁾ Resolved 99 [atomics.types.integral] Underspecified typedefs for atomic integral types Yes 1465⁽ⁱ⁾ Resolved 99 [atomics.types.address] Missing arithmetic operators for atomic_address Yes 1466⁽ⁱ⁾ Resolved 99 [atomics.types.address] Silent const breakage by compare_exchange_* member functions Yes 1467⁽ⁱ⁾ Resolved 99 [atomics.types.address] Deriving atomic<T*> from atomic_address breaks type safety Yes 1468⁽ⁱ⁾ Resolved 99 [atomics.types.address] atomic_address::compare_exchange_* member functions should match atomic_compare_exchange_* free functions Yes 1469⁽ⁱ⁾ Resolved 32.5.8 [atomics.types.generic] atomic<T*> inheritance from atomic_address breaks type safety Yes 1470⁽ⁱ⁾ Dup 32.5.8.2 [atomics.types.operations] "Same-ness" curiosities Yes 1474 1471⁽ⁱ⁾ NAD Editorial 32.5.8.2 [atomics.types.operations] Default constructor of atomics needs specification Yes 1472⁽ⁱ⁾ NAD Editorial 32.5.8.2 [atomics.types.operations] Incorrect semantics of atomic_init Yes 1473⁽ⁱ⁾ NAD 32.5.8.2 [atomics.types.operations] Incomplete memory order specifications Yes 1474⁽ⁱ⁾ C++11 32.5.8.2 [atomics.types.operations] weak compare-and-exchange confusion Yes 1470, 1475, 1476, 1477 1475⁽ⁱ⁾ Dup 32.5.8.2 [atomics.types.operations] weak compare-and-exchange confusion II Yes 1474 1476⁽ⁱ⁾ Dup 32.5.8.2 [atomics.types.operations] Meaningless specification of spurious failure Yes 1474 1477⁽ⁱ⁾ Dup 32.5.8.2 [atomics.types.operations] weak compare-and-exchange confusion III Yes 1474 1478⁽ⁱ⁾ C++11 32.5.8.2 [atomics.types.operations] Clarify race conditions in atomics initialization Yes 1479⁽ⁱ⁾ C++11 32.5.11 [atomics.fences] Fence functions should be extern "C" Yes 1480⁽ⁱ⁾ C++11 32.5.11 [atomics.fences] Atomic fences don't have synchronizes with relation Yes 1481⁽ⁱ⁾ Resolved 32.2 [thread.req] Missing Lockable requirements Yes 1482⁽ⁱ⁾ Resolved 32.2.4 [thread.req.timing] Timeout operations are under-specified Yes 1483⁽ⁱ⁾ NAD Editorial 32.4 [thread.threads] __STDCPP_THREADS spelling Yes 1484⁽ⁱ⁾ LEWG 32.4.3 [thread.thread.class] Need a way to join a thread with a timeout No 1485⁽ⁱ⁾ NAD 32.4.3.2 [thread.thread.id] Unclear thread::id specification Yes 1486⁽ⁱ⁾ NAD 32.4.5 [thread.thread.this] Value of this_thread::get_id() underspecified for detached thread Yes 1487⁽ⁱ⁾ C++11 32.4.5 [thread.thread.this] Clock related operations exception specifications conflict Yes 1488⁽ⁱ⁾ LEWG 32.6 [thread.mutex] Improve interoperability between the C++0x and C1x threads APIs No 1489⁽ⁱ⁾ NAD Editorial 32.6 [thread.mutex] unlock functions and unlock mutex requirements are inconsistent Yes 1490⁽ⁱ⁾ Resolved 32.6.4 [thread.mutex.requirements] Mutex requirements too stringent Yes 1491⁽ⁱ⁾ Resolved 32.6.4 [thread.mutex.requirements] try_lock does not guarantee forward progress Yes 1492⁽ⁱ⁾ Resolved 32.6.4 [thread.mutex.requirements] Mutex requirements should not be bound to threads Yes 1493⁽ⁱ⁾ LEWG 32.6.4 [thread.mutex.requirements] Add mutex, recursive_mutex, is_locked function No 1494⁽ⁱ⁾ C++11 32.6.7.2 [thread.once.callonce] Term "are serialized" not defined Yes 1495⁽ⁱ⁾ NAD Editorial 32.7 [thread.condition] Condition variable wait_for return value insufficient Yes 1496⁽ⁱ⁾ NAD Editorial 32.7.4 [thread.condition.condvar] condition_variable not implementable Yes 1497⁽ⁱ⁾ C++11 32.7 [thread.condition] lock() postcondition can not be generally achieved Yes 1498⁽ⁱ⁾ Resolved 32.7 [thread.condition] Unclear specification for [thread.condition] Yes 1499⁽ⁱ⁾ NAD 32.7 [thread.condition] Condition variables preclude wakeup optimization Yes 1500⁽ⁱ⁾ NAD Editorial 32.7.5 [thread.condition.condvarany] Consider removal of native_handle() Yes 1501⁽ⁱ⁾ Resolved 32.10 [futures] Specification for managing associated asynchronous state has problems Yes 1502⁽ⁱ⁾ Resolved 32.10.5 [futures.state] Specification of [futures.state] unclear Yes 1503⁽ⁱ⁾ NAD Editorial 32.10.5 [futures.state] "associated asynchronous state" must go Yes 1504⁽ⁱ⁾ Resolved 32.10.6 [futures.promise] Term "are serialized" is not defined Yes 1505⁽ⁱ⁾ Resolved 32.10.6 [futures.promise] Synchronization between promise::set_value and future::get Yes 1506⁽ⁱ⁾ NAD Editorial 32.10.6 [futures.promise] set_exception with a null pointer Yes 1507⁽ⁱ⁾ Resolved 32.10.6 [futures.promise] promise::XXX_at_thread_exit functions have no synchronization requirements Yes 1508⁽ⁱ⁾ Resolved 32.10.10 [futures.task] Rename packaged_task::operator bool() Yes 1509⁽ⁱ⁾ NAD Editorial 99 [futures.atomic_future] No restriction on calling future::get more than once Yes 1510⁽ⁱ⁾ NAD Editorial 99 [futures.atomic_future] Should be undefined behaviour to call atomic_future operations unless valid() Yes 1511⁽ⁱ⁾ NAD Editorial 99 [futures.atomic_future] Synchronize the move-constructor for atomic_future Yes 1512⁽ⁱ⁾ NAD Editorial 32.10.9 [futures.async] Conflict in specification: block or join? Yes 1513⁽ⁱ⁾ Resolved 32.10 [futures] 'launch' enum too restrictive Yes 1514⁽ⁱ⁾ C++11 32.10.10.2 [futures.task.members] packaged_task constructors need review Yes 1515⁽ⁱ⁾ Resolved 32.10.10.2 [futures.task.members] packaged_task::make_ready_at_thread_exit has no synchronization requirements Yes 1516⁽ⁱ⁾ C++11 99 [depr.auto.ptr] No specification for which header contains auto_ptr Yes 1517⁽ⁱ⁾ C++11 20.3.1.2.2 [unique.ptr.dltr.dflt] default_delete's default constructor should be trivial Yes 1518⁽ⁱ⁾ C++11 32.10 [futures] Waiting for deferred functions Yes 1519⁽ⁱ⁾ C++11 23.5.3 [unord.map] bucketsize() const only for unordered set Yes 1520⁽ⁱ⁾ C++11 22.10.4 [func.require] INVOKE on member data pointer with too many arguments Yes 1521⁽ⁱ⁾ Open 23.2.2 [container.requirements.general] Requirements on internal pointer representations in containers Yes 3 1522⁽ⁱ⁾ C++11 29.4.10 [cmplx.over] conj specification is now nonsense Yes 1523⁽ⁱ⁾ Resolved 32.5 [atomics] noexcept for Clause 29 Yes 1524⁽ⁱ⁾ C++11 17.6.3.5 [new.delete.dataraces] Allocation functions are missing happens-before requirements and guarantees Yes 1525⁽ⁱ⁾ C++11 23.3.13.3 [vector.capacity] Effects of resize(size()) on a vector Yes 1526⁽ⁱ⁾ Resolved 16.4.6.10 [res.on.data.races] C++ should not impose thread safety requirements on C99 library implementations Yes 3 2000⁽ⁱ⁾ C++11 32.10.10.3 [futures.task.nonmembers] Missing definition of packaged_task specialization of uses_allocator Yes 2001⁽ⁱ⁾ C++11 28.6.7.3 [re.regex.assign] Class template basic_regex uses non existent string_type Yes 2002⁽ⁱ⁾ Resolved 28.6.9.9 [re.results.nonmember] Class template match_results does not specify the semantics of operator== Yes 2003⁽ⁱ⁾ C++14 27.4.3.2 [string.require] String exception inconsistency in erase. Yes 0 2004⁽ⁱ⁾ C++11 30.5.6 [time.duration.nonmember] duration::operator* has template parameters in funny order Yes 2005⁽ⁱ⁾ C++14 23.4.3.4 [map.modifiers] unordered_map::insert(T&&) protection should apply to map too Yes 2006⁽ⁱ⁾ NAD 23.2.8 [unord.req] emplace broken for associative containers Yes 2007⁽ⁱ⁾ C++11 23.4.3.3 [map.access] Incorrect specification of return value for map<>::at() Yes 2008⁽ⁱ⁾ C++11 32.10.10.2 [futures.task.members] Conflicting Error Conditions for packaged_task::operator() Yes 2009⁽ⁱ⁾ C++14 27.4.5 [string.conversions] Reporting out-of-bound values on numeric string conversions Yes 2010⁽ⁱ⁾ C++14 22.10.15.2 [func.bind.isbind] is_* traits for binding operations can't be meaningfully specialized Yes 2011⁽ⁱ⁾ C++14 27.4.4.4 [string.io] Unexpected output required of strings Yes 2012⁽ⁱ⁾ Resolved 23.4 [associative] Associative maps should insert pair, not tuple Yes 2013⁽ⁱ⁾ C++14 16.4.6.7 [constexpr.functions] Do library implementers have the freedom to add constexpr? Yes 2014⁽ⁱ⁾ C++11 16.4.5.3.3 [macro.names] More restrictions on macro names Yes 2015⁽ⁱ⁾ C++14 21.3.6 [meta.unary] Incorrect pre-conditions for some type traits Yes 2016⁽ⁱ⁾ C++17 16.4.4.6 [allocator.requirements] Allocators must be no-throw swappable Yes 2 2017⁽ⁱ⁾ C++11 22.10.6 [refwrap] std::reference_wrapper makes incorrect usage of std::result_of Yes 2018⁽ⁱ⁾ C++14 28.6.6 [re.traits] [CD] regex_traits::isctype Returns clause is wrong Yes 2019⁽ⁱ⁾ C++11 28.3.3.3.1 [classification] isblank not supported by std::locale Yes 2020⁽ⁱ⁾ C++11 30.5.6 [time.duration.nonmember] Time utility arithmetic constexpr functions have invalid effects Yes 2021⁽ⁱ⁾ C++14 22.10.15.4 [func.bind.bind] Further incorrect usages of result_of Yes 2022⁽ⁱ⁾ C++11 22.10.6 [refwrap] reference_wrapper<T>::result_type is underspecified Yes 2023⁽ⁱ⁾ Resolved 32.6.5.2 [thread.lock.guard] Incorrect requirements for lock_guard and unique_lock Yes 2024⁽ⁱ⁾ Resolved 32.5.8 [atomics.types.generic] Inconsistent implementation requirements for atomic<integral> and atomic<T*> Yes 2025⁽ⁱ⁾ Resolved 32.10.10.2 [futures.task.members] Incorrect semantics of move assignment operator of packaged_task Yes 2026⁽ⁱ⁾ NAD 23.5 [unord] hash should be std qualified for unordered container Yes 2027⁽ⁱ⁾ C++11 32.10.10.2 [futures.task.members] Initialization of the stored task of a packaged_task Yes 2028⁽ⁱ⁾ C++14 28.3.4.8.2 [locale.messages] messages_base::catalog overspecified Yes 2029⁽ⁱ⁾ C++11 28.6.7 [re.regex] Missing 'noexcept' on basic_regex move-assignment operator Yes 2030⁽ⁱ⁾ C++11 32.10.10 [futures.task] packaged_task::result_type should be removed Yes 2031⁽ⁱ⁾ C++11 32.10.7 [futures.unique.future] std::future<>::share() only applies to rvalues Yes 2032⁽ⁱ⁾ C++11 32.10.9 [futures.async] Incorrect synchronization clause of async function Yes 2033⁽ⁱ⁾ C++14 23.3.13.3 [vector.capacity] Preconditions of reserve, shrink_to_fit, and resize functions Yes 2034⁽ⁱ⁾ Resolved 32.5.4 [atomics.order] Initialization of atomics is misspecified so that it doesn't preserve sequential consistency Yes 2035⁽ⁱ⁾ Open 24.3.5.4 [output.iterators] Output iterator requirements are broken Yes 3 2036⁽ⁱ⁾ NAD 31.7.5.2 [istream] istream >> char and eofbit Yes 2037⁽ⁱ⁾ Resolved 32.5.2 [atomics.syn] atomic free functions incorrectly specified Yes 2038⁽ⁱ⁾ Open 24.3.5.4 [output.iterators] Missing definition for incrementable iterator No 3 2039⁽ⁱ⁾ C++14 26.7.1 [alg.copy] Issues with std::reverse and std::copy_if Yes 2040⁽ⁱ⁾ Resolved 21 [meta] Missing type traits related to is_convertible Yes 2041⁽ⁱ⁾ C++11 28.3.4.3.2.3 [facet.num.get.virtuals] Stage 2 accumulate incompatibilty Yes 2042⁽ⁱ⁾ C++11 23.3.7.3 [forward.list.iter] Comparing forward_list::before_begin() to forward_list::end() Yes 2043⁽ⁱ⁾ NAD 31.13 [c.files] std{in,out,err} should be usable as field names Yes 2044⁽ⁱ⁾ C++14 16.4.6.8 [algorithm.stable] No definition of "Stable" for copy algorithms Yes 2045⁽ⁱ⁾ C++14 23.3.7.6 [forward.list.ops] forward_list::merge and forward_list::splice_after with unequal allocators Yes 2046⁽ⁱ⁾ NAD 32.10.8 [futures.shared.future] shared_future(future<R>&&) should be allowed to throw Yes 2047⁽ⁱ⁾ C++14 20.3.1.3.4 [unique.ptr.single.asgn] Incorrect "mixed" move-assignment semantics of unique_ptr Yes 2048⁽ⁱ⁾ C++14 22.10 [function.objects] Unnecessary mem_fn overloads Yes 2049⁽ⁱ⁾ C++14 21.3.6.4 [meta.unary.prop] is_destructible is underspecified Yes 2050⁽ⁱ⁾ C++14 23.5 [unord] Unordered associative containers do not use allocator_traits to define member types Yes 2051⁽ⁱ⁾ Resolved 22.4.4 [tuple.tuple] Explicit tuple constructors for more than one parameter Yes 2 2052⁽ⁱ⁾ Resolved 23.2.7 [associative.reqmts] Mixup between mapped_type and value_type for associative containers Yes 2 2053⁽ⁱ⁾ C++14 28.6.4 [re.const] Errors in regex bitmask types Yes 2054⁽ⁱ⁾ Resolved 30.6 [time.point] time_point constructors need to be constexpr Yes 2055⁽ⁱ⁾ Resolved 26.10 [numeric.ops] std::move in std::accumulate and other algorithms Yes 3 2056⁽ⁱ⁾ C++14 32.10.1 [futures.overview] future_errc enums start with value 0 (invalid value for broken_promise) Yes 2057⁽ⁱ⁾ Resolved 30.6.6 [time.point.nonmember] time_point + duration semantics should be made constexpr conforming Yes 2058⁽ⁱ⁾ C++14 29.6 [numarray] valarray and begin/end Yes 2059⁽ⁱ⁾ C++17 23.4.3 [map] C++0x ambiguity problem with map::erase Yes 3 2060⁽ⁱ⁾ NAD Editorial 20.3.1.4 [unique.ptr.runtime] unique_ptr<T[]>(nullptr_t) missing noexcept Yes 2061⁽ⁱ⁾ C++14 24.2 [iterator.synopsis] make_move_iterator and arrays Yes 2062⁽ⁱ⁾ C++17 22.10.17.3 [func.wrap.func] Effect contradictions w/o no-throw guarantee of std::function swaps Yes 2 2063⁽ⁱ⁾ C++17 27.4.3 [basic.string] Contradictory requirements for string move assignment Yes 3 2064⁽ⁱ⁾ C++14 27.4.3 [basic.string] More noexcept issues in basic_string Yes 2065⁽ⁱ⁾ C++14 16.4.4.6 [allocator.requirements] Minimal allocator interface Yes 2066⁽ⁱ⁾ Resolved 23.3.13.3 [vector.capacity] Missing specification of vector::resize(size_type) Yes 2067⁽ⁱ⁾ C++14 32.10.10 [futures.task] packaged_task should have deleted copy c'tor with const parameter Yes 2068⁽ⁱ⁾ NAD 22.3.2 [pairs.pair] std::pair not C++03-compatible with defaulted copy c'tor Yes 2069⁽ⁱ⁾ C++14 27.4.3.3 [string.cons] Inconsistent exception spec for basic_string move constructor Yes 2070⁽ⁱ⁾ Resolved 20.3.2.2.7 [util.smartptr.shared.create] allocate_shared should use allocator_traits<A>::construct Yes 2 2071⁽ⁱ⁾ C++14 29.6.2.3 [valarray.assign] std::valarray move-assignment Yes 2072⁽ⁱ⁾ C++17 99 [depr.temporary.buffer] Unclear wording about capacity of temporary buffers Yes 3 2073⁽ⁱ⁾ NAD 19.2 [std.exceptions] Library exceptions that take string arguments Yes 2074⁽ⁱ⁾ C++14 26.7.10 [alg.reverse] Off by one error in std::reverse_copy Yes 2075⁽ⁱ⁾ Resolved 6.10.2 [intro.multithread] Progress guarantees, lock-free property, and scheduling assumptions Yes 2076⁽ⁱ⁾ C++17 23.4.6.2 [set.cons] Bad CopyConstructible requirement in set constructors Yes 3 2077⁽ⁱ⁾ Open 21.3.6.4 [meta.unary.prop] Further incomplete constraints for type traits No 3 2078⁽ⁱ⁾ C++14 32.10.9 [futures.async] Throw specification of async() incomplete Yes 2079⁽ⁱ⁾ NAD 29.7 [c.math] Required pow() overloads Yes 3 2080⁽ⁱ⁾ C++14 32.6.7 [thread.once] Specify when once_flag becomes invalid Yes 2081⁽ⁱ⁾ C++14 16.4.4.6 [allocator.requirements] Allocator requirements should include CopyConstructible Yes 2082⁽ⁱ⁾ NAD 26 [algorithms] Misleading complexity requirements in <algorithm> Yes 2083⁽ⁱ⁾ C++14 20.3.2.3 [util.smartptr.weak] const-qualification on weak_ptr::owner_before Yes 2084⁽ⁱ⁾ NAD 27.4.3 [basic.string] basic_string use of charT* Yes 2085⁽ⁱ⁾ C++14 31.7.5.4 [istream.unformatted] Wrong description of effect 1 of basic_istream::ignore Yes 2086⁽ⁱ⁾ C++14 29.7 [c.math] Overly generic type support for math functions Yes 2087⁽ⁱ⁾ C++14 31.5 [iostreams.base] iostream_category() and noexcept Yes 2088⁽ⁱ⁾ Resolved 17.9.5 [exception.terminate] std::terminate problem Yes 3 2089⁽ⁱ⁾ Resolved 20.2.10.2 [allocator.members] std::allocator::construct should use uniform initialization Yes 2 2090⁽ⁱ⁾ NAD 32.6.4.2 [thread.mutex.requirements.mutex] Minor Overconstraint in Mutex Types Yes 2091⁽ⁱ⁾ C++14 32.6.4.3 [thread.timedmutex.requirements] Misplaced effect in m.try_lock_for() Yes 2092⁽ⁱ⁾ C++14 32.7.5 [thread.condition.condvarany] Vague Wording for condition_variable_any Yes 2093⁽ⁱ⁾ C++14 32.7.4 [thread.condition.condvar] Throws clause of condition_variable::wait with predicate Yes 2094⁽ⁱ⁾ C++14 30.5.2 [time.duration.cons] duration conversion overflow shouldn't participate in overload resolution Yes 2095⁽ⁱ⁾ Resolved 32.10.6 [futures.promise] promise and packaged_task missing constructors needed for uses-allocator construction Yes 4 2096⁽ⁱ⁾ C++14 32.10.7 [futures.unique.future] Incorrect constraints of future::get in regard to MoveAssignable Yes 2097⁽ⁱ⁾ C++14 32.10.10.2 [futures.task.members] packaged_task constructors should be constrained Yes 2098⁽ⁱ⁾ C++14 32.10.6 [futures.promise] Minor Inconsistency between promise::set_value and promise::set_value_at_thread_exit Yes 2099⁽ⁱ⁾ C++14 17.14 [support.runtime] Unnecessary constraints of va_start() usage Yes 2100⁽ⁱ⁾ C++14 32.10.9 [futures.async] timed waiting functions cannot timeout if launch::async policy used Yes 2101⁽ⁱ⁾ C++17 21.3.9 [meta.trans] Some transformation types can produce impossible types Yes 3 2102⁽ⁱ⁾ C++14 32.10.1 [futures.overview] Why is std::launch an implementation-defined type? Yes 2103⁽ⁱ⁾ C++14 20.2.10 [default.allocator] std::allocator_traits<std::allocator<T>>::propagate_on_container_move_assignment Yes 2104⁽ⁱ⁾ C++14 32.6.5.4 [thread.lock.unique] unique_lock move-assignment should not be noexcept Yes 2105⁽ⁱ⁾ C++14 23.2.2 [container.requirements.general] Inconsistent requirements on const_iterator's value_type Yes 2106⁽ⁱ⁾ C++17 24.5.4 [move.iterators] move_iterator wrapping iterators returning prvalues Yes 3 2107⁽ⁱ⁾ NAD 24.3 [iterator.requirements] Some iterator category should guarantee the lifetime of references Yes 2108⁽ⁱ⁾ Resolved 16.4.4.6 [allocator.requirements] No way to identify allocator types that always compare equal Yes 3 2109⁽ⁱ⁾ C++14 19.5.7 [syserr.hash] Incorrect requirements for hash specializations Yes 2110⁽ⁱ⁾ C++14 26.7.8 [alg.remove] remove can't swap but note says it might Yes 2111⁽ⁱ⁾ C++17 17.9.5.4 [terminate] Which unexpected/terminate handler is called from the exception handling runtime? Yes 3 2112⁽ⁱ⁾ C++14 16.4.6 [conforming] User-defined classes that cannot be derived from Yes 1 2113⁽ⁱ⁾ NAD 16.4.6 [conforming] Do library implementers have the freedom to add final to non-polymorphic components? Yes 2114⁽ⁱ⁾ Resolved 16.4.4.4 [nullablepointer.requirements] Incorrect "contextually convertible to bool" requirements Yes 3 2115⁽ⁱ⁾ Open 29.6.8 [template.mask.array] Undefined behaviour for valarray assignments with mask_array index? No 4 2116⁽ⁱ⁾ Open 21.3.6.4 [meta.unary.prop] is_nothrow_constructible and destructors No 3 2117⁽ⁱ⁾ Open 28.3.4.3.3.3 [facet.num.put.virtuals] ios_base manipulators should have showgrouping/noshowgrouping No 3 2118⁽ⁱ⁾ Resolved 20.3.1.4 [unique.ptr.runtime] [CD] unique_ptr for array does not support cv qualification conversion of actual argument Yes 1 2119⁽ⁱ⁾ C++17 22.10.19 [unord.hash] Missing hash specializations for extended integer types Yes 3 2120⁽ⁱ⁾ C++14 32.10.9 [futures.async] What should async do if neither 'async' nor 'deferred' is set in policy? Yes 2121⁽ⁱ⁾ NAD 31.8.5.2 [stringstream.cons] app for string streams Yes 3 2122⁽ⁱ⁾ C++14 23.3.11.5 [list.ops] merge() stability for lists versus forward lists Yes 2123⁽ⁱ⁾ C++14 23.3.7.6 [forward.list.ops] merge() allocator requirements for lists versus forward lists Yes 2124⁽ⁱ⁾ NAD 29.5.3.2 [rand.req.seedseq] Seed sequence over-specified Yes 2125⁽ⁱ⁾ Pending NAD Editorial 32.6.4.3 [thread.timedmutex.requirements] TimedMutex specification problem Yes 2126⁽ⁱ⁾ Pending NAD Editorial 32.6.4 [thread.mutex.requirements] Several specification problems in regard to mutex requirements Yes 2127⁽ⁱ⁾ C++17 99 [depr.storage.iterator] Move-construction with raw_storage_iterator Yes 3 2128⁽ⁱ⁾ C++14 24.2 [iterator.synopsis] Absence of global functions cbegin/cend Yes 2129⁽ⁱ⁾ C++17 16.4.5.2.1 [namespace.std] User specializations of std::initializer_list Yes 3 2130⁽ⁱ⁾ C++14 32.5.4 [atomics.order] Missing ordering constraints Yes 2131⁽ⁱ⁾ NAD 31.7.5.4 [istream.unformatted] Member function getline taking a string as parameter Yes 2132⁽ⁱ⁾ C++14 22.10.17.3.2 [func.wrap.func.con] std::function ambiguity Yes 2 2133⁽ⁱ⁾ C++17 16.4.6.4 [global.functions] Attitude to overloaded comma for iterators Yes 3 2134⁽ⁱ⁾ Pending NAD Editorial 32.6.4.2 [thread.mutex.requirements.mutex] Redundant Mutex requirement? Yes 2135⁽ⁱ⁾ C++14 32.7.4 [thread.condition.condvar] Unclear requirement for exceptions thrown in condition_variable::wait() Yes 2136⁽ⁱ⁾ Open 16.3.2 [structure] Postconditions vs. exceptions Yes 3 2137⁽ⁱ⁾ Open 28.6.7.3 [re.regex.assign] Misleadingly constrained post-condition in the presence of exceptions Yes 3 2138⁽ⁱ⁾ C++14 32.5.10 [atomics.flag] atomic_flag::clear should not accept memory_order_consume Yes 2139⁽ⁱ⁾ C++20 16.4.5.2.1 [namespace.std] What is a user-defined type? Yes 4 2140⁽ⁱ⁾ C++14 32.7 [thread.condition] Meaning of notify_all_at_thread_exit synchronization requirement? Yes 2141⁽ⁱ⁾ C++14 21.3.9.7 [meta.trans.other] common_type trait produces reference types Yes 2142⁽ⁱ⁾ C++14 32.10.10.2 [futures.task.members] packaged_task::operator() synchronization too broad? Yes 2143⁽ⁱ⁾ C++14 31.5.2 [ios.base] ios_base::xalloc should be thread-safe Yes 2144⁽ⁱ⁾ C++14 17.7.7 [type.index] Missing noexcept specification in type_index Yes 2145⁽ⁱ⁾ C++14 19.5.3 [syserr.errcat] error_category default constructor Yes 2146⁽ⁱ⁾ Open 16.4.4.2 [utility.arg.requirements] Are reference types CopyConstructible/MoveConstructible/CopyAssignable/MoveAssignable/Destructible? No 3 2147⁽ⁱ⁾ C++14 16.4.4.6 [allocator.requirements] Unclear hint type in Allocator's allocate function Yes 2148⁽ⁱ⁾ C++14 22.10.19 [unord.hash] Hashing enums should be supported directly by std::hash Yes 2149⁽ⁱ⁾ C++14 22.10 [function.objects] Concerns about 20.8/5 Yes 2150⁽ⁱ⁾ C++14 26.6.8 [alg.find.end] Unclear specification of find_end Yes 2151⁽ⁱ⁾ Resolved 27.4.3.2 [string.require] basic_string<>::swap semantics ignore allocators Yes 3 2152⁽ⁱ⁾ LEWG 16.4.4.3 [swappable.requirements] Instances of standard container types are not swappable Yes 3 2153⁽ⁱ⁾ LEWG 22.2.2 [utility.swap] Narrowing of the non-member swap contract No 2 2154⁽ⁱ⁾ Resolved 29.5.3.3 [rand.req.urng] What exactly does compile-time complexity imply? Yes 4 2155⁽ⁱ⁾ Resolved 17.14 [support.runtime] Macro __bool_true_false_are_defined should be removed Yes 4 2156⁽ⁱ⁾ C++17 23.2.8 [unord.req] Unordered containers' reserve(n) reserves for n-1 elements Yes 3 2157⁽ⁱ⁾ Open 23.3.3.5 [array.zero] How does std::array<T,0> initialization work when T is not default-constructible? Yes 3 2158⁽ⁱ⁾ Open 23.3.13.3 [vector.capacity] Conditional copy/move in std::vector Yes 3 2159⁽ⁱ⁾ C++14 32.5.10 [atomics.flag] atomic_flag initialization Yes 2160⁽ⁱ⁾ C++17 23.3.13.3 [vector.capacity] Unintended destruction ordering-specification of resize Yes 1 2161⁽ⁱ⁾ NAD 23.4 [associative] const equivalence of std::map Yes 2 2162⁽ⁱ⁾ C++14 16.4.4.6 [allocator.requirements] allocator_traits::max_size missing noexcept Yes 2163⁽ⁱ⁾ C++14 26.8.3 [alg.nth.element] nth_element requires inconsistent post-conditions Yes 2164⁽ⁱ⁾ C++20 23.3.13.5 [vector.modifiers] What are the semantics of vector.emplace(vector.begin(), vector.back())? Yes 2 2165⁽ⁱ⁾ Resolved 32.5.8 [atomics.types.generic] std::atomic<X> requires X to be nothrow default constructible Yes 4 2166⁽ⁱ⁾ C++17 26.8.8 [alg.heap.operations] Heap property underspecified? Yes 3 2167⁽ⁱ⁾ NAD 23.2.2 [container.requirements.general] Copy assignment requirements of Containers Yes 2168⁽ⁱ⁾ C++17 29.5.9.2.2 [rand.dist.uni.real] Inconsistent specification of uniform_real_distribution constructor Yes 3 2169⁽ⁱ⁾ C++14 20.3.1.4.5 [unique.ptr.runtime.modifiers] Missing reset() requirements in unique_ptr specialization Yes 2170⁽ⁱ⁾ C++17 16.4.4.2 [utility.arg.requirements] Aggregates cannot be DefaultConstructible Yes 2 2171⁽ⁱ⁾ NAD 16.4.4.3 [swappable.requirements] "swappable" undefined for swapping lvalue and rvalue Yes 2172⁽ⁱ⁾ C++14 99 [depr.util.smartptr.shared.atomic] Does atomic_compare_exchange_* accept v == nullptr arguments? Yes 2173⁽ⁱ⁾ Open 26 [algorithms] The meaning of operator + in the description of the algorithms Yes 4 2174⁽ⁱ⁾ C++14 99 [depr.conversions.string] wstring_convert::converted() should be noexcept Yes 2175⁽ⁱ⁾ C++14 99 [depr.conversions.string] wstring_convert and wbuffer_convert validity Yes 2176⁽ⁱ⁾ C++14 99 [depr.conversions.string] Special members for wstring_convert and wbuffer_convert Yes 2177⁽ⁱ⁾ C++14 23.2.2 [container.requirements.general] Requirements on Copy/MoveInsertable Yes 2178⁽ⁱ⁾ Pending NAD Editorial 16.4.4.6 [allocator.requirements] Allocator requirement changes not mentioned Annex C Yes 3 2179⁽ⁱ⁾ Resolved 20.3.2.7 [util.smartptr.enab] enable_shared_from_this and construction from raw pointers Yes 3 2180⁽ⁱ⁾ C++14 29.5.8.1 [rand.util.seedseq] Exceptions from std::seed_seq operations Yes 2181⁽ⁱ⁾ C++17 29.5.3.2 [rand.req.seedseq] Exceptions from seed sequence operations Yes 3 2182⁽ⁱ⁾ C++14 23.2.2 [container.requirements.general] Container::[const_]reference types are misleadingly specified Yes 0 2183⁽ⁱ⁾ C++20 28.6.9.2 [re.results.const] Muddled allocator requirements for match_results constructors Yes 3 2184⁽ⁱ⁾ C++20 28.6.9.2 [re.results.const] Muddled allocator requirements for match_results assignments Yes 3 2185⁽ⁱ⁾ C++14 32.10.7 [futures.unique.future] Missing throws clause for future/shared_future::wait_for/wait_until Yes 2186⁽ⁱ⁾ C++14 32.10.9 [futures.async] Incomplete action on async/launch::deferred Yes 2187⁽ⁱ⁾ C++14 23.3.14 [vector.bool] vector<bool> is missing emplace and emplace_back member functions Yes 2188⁽ⁱ⁾ C++14 24.5.1.6 [reverse.iter.elem] Reverse iterator does not fully support targets that overload operator& Yes 1 2189⁽ⁱ⁾ Open 23.2.8.2 [unord.req.except] Throwing swap breaks unordered containers' state No 3 2190⁽ⁱ⁾ C++14 32.7 [thread.condition] Condition variable specification Yes 2191⁽ⁱ⁾ C++23 28.6.9.2 [re.results.const] Incorrect specification of match_results(match_results&&) Yes 4 2192⁽ⁱ⁾ C++17 29.7 [c.math] Validity and return type of std::abs(0u) is unclear Yes 2 2193⁽ⁱ⁾ C++14 23 [containers] Default constructors for standard library containers are explicit Yes 1 2194⁽ⁱ⁾ C++14 23.6 [container.adaptors] Impossible container requirements for adaptor types Yes 2195⁽ⁱ⁾ C++23 28.6.9 [re.results] Missing constructors for match_results Yes 3 2196⁽ⁱ⁾ C++14 21.3.6.4 [meta.unary.prop] Specification of is_*[copy/move]_[constructible/assignable] unclear for non-referencable types Yes 2197⁽ⁱ⁾ C++14 21.3.6.4 [meta.unary.prop] Specification of is_[un]signed unclear for non-arithmetic types Yes 2198⁽ⁱ⁾ Open 23.2.8 [unord.req] max_load_factor(z) makes no strong guarantees, but bans useful behavior Yes 3 2199⁽ⁱ⁾ NAD 23.2.8 [unord.req] unordered containers are required to have an initial max load factor of 1.0 Yes 3 2200⁽ⁱ⁾ C++14 23.2.3 [container.requirements.dataraces] Data race avoidance for all containers, not only for sequences Yes 2201⁽ⁱ⁾ NAD Editorial C.8 [diff.library] Missing macro entries from C standard library Yes 2 2202⁽ⁱ⁾ Deferred 32.10.9 [futures.async] Missing allocator support by async No 4 2203⁽ⁱ⁾ C++14 20.6.4 [allocator.adaptor.members] scoped_allocator_adaptor uses wrong argument types for piecewise construction Yes 2204⁽ⁱ⁾ NAD 24.5.1.6 [reverse.iter.elem] reverse_iterator should not require a second copy of the base iterator Yes 2205⁽ⁱ⁾ C++14 28.6.10.2 [re.alg.match] Problematic postconditions of regex_match and regex_search Yes 0 2206⁽ⁱ⁾ Open 23.2.4 [sequence.reqmts] Inaccuracy in initializer_list constructor requirements Yes 3 2207⁽ⁱ⁾ C++14 27.4.3.6 [string.access] basic_string::at should not have a Requires clause Yes 2208⁽ⁱ⁾ Resolved 24.5.1 [reverse.iterators] std::reverse_iterator should be a literal type Yes 3 2209⁽ⁱ⁾ C++14 23.3 [sequences] assign() overspecified for sequence containers Yes 2210⁽ⁱ⁾ C++14 23.3 [sequences] Missing allocator-extended constructor for allocator-aware containers Yes 2211⁽ⁱ⁾ C++14 23.2.2 [container.requirements.general] Replace ambiguous use of "Allocator" in container requirements Yes 2212⁽ⁱ⁾ C++17 22.2 [utility] tuple_size for const pair request <tuple> header Yes 3 2213⁽ⁱ⁾ C++14 28.6.10.4 [re.alg.replace] Return value of std::regex_replace Yes 0 2214⁽ⁱ⁾ Open 31.5.4.2 [basic.ios.cons] Clarify basic_ios::init call restrictions Yes 4 2215⁽ⁱ⁾ Open 23.2.7 [associative.reqmts] (unordered) associative container functors should be CopyConstructible Yes 3 2216⁽ⁱ⁾ New 28.6.10.4 [re.alg.replace] regex_replace(basic_string) allocator handling No 3 2217⁽ⁱ⁾ C++17 28.6.8.3 [re.submatch.op] operator==(sub_match, string) slices on embedded '\0's Yes 2 2218⁽ⁱ⁾ C++17 23.2.2 [container.requirements.general] Unclear how containers use allocator_traits::construct() Yes 3 2219⁽ⁱ⁾ C++17 22.10.4 [func.require] INVOKE-ing a pointer to member with a reference_wrapper as the object expression Yes 2 2220⁽ⁱ⁾ Open 28.6.11.2.3 [re.tokiter.comp] Under-specification of operator== for regex_token_iterator Yes 3 2221⁽ⁱ⁾ C++17 31.7.6 [output.streams] No formatted output operator for nullptr Yes 3 2222⁽ⁱ⁾ C++14 23.3.7.6 [forward.list.ops] Inconsistency in description of forward_list::splice_after single-element overload Yes 2223⁽ⁱ⁾ C++17 23.3.13.3 [vector.capacity] shrink_to_fit effect on iterator validity Yes 2 2224⁽ⁱ⁾ C++17 16.4.5.10 [res.on.objects] Ambiguous status of access to non-live objects Yes 2 2225⁽ⁱ⁾ C++14 16.4.3.2 [using.headers] Unrealistic header inclusion checks required Yes 2226⁽ⁱ⁾ NAD 99 [depr.conversions.string] wstring_convert methods do not take allocator instance Yes 2227⁽ⁱ⁾ Open 23.2.7 [associative.reqmts] Stateful comparison objects in associative containers No 3 2228⁽ⁱ⁾ Resolved 20.3.1.3.4 [unique.ptr.single.asgn] Missing SFINAE rule in unique_ptr templated assignment Yes 3 2229⁽ⁱ⁾ C++14 99 [depr.locale.stdcvt] Standard code conversion facets underspecified Yes 2230⁽ⁱ⁾ C++17 23.5 [unord] "see below" for initializer-list constructors of unordered containers Yes 4 2231⁽ⁱ⁾ C++14 23.2.4 [sequence.reqmts] DR 704 removes complexity guarantee for clear() Yes 2232⁽ⁱ⁾ Resolved 27.2.4 [char.traits.specializations] [CD] The char_traits specializations should declare their length(), compare(), and find() members constexpr Yes 2233⁽ⁱ⁾ C++17 22.10.17.2 [func.wrap.badcall] bad_function_call::what() unhelpful Yes 3 2234⁽ⁱ⁾ C++17 19.3 [assertions] assert() should allow usage in constant expressions Yes 2 2235⁽ⁱ⁾ C++14 27.4.3.3 [string.cons] Undefined behavior without proper requirements on basic_string constructors Yes 2236⁽ⁱ⁾ SG1 32.5.2 [atomics.syn] kill_dependency unconditionally noexcept No 2237⁽ⁱ⁾ New 27.5 [c.strings] <cuchar> macros No 4 2238⁽ⁱ⁾ Open 27.5 [c.strings] Problematic iterator-pair constructor of containers No 3 2239⁽ⁱ⁾ C++17 26.8.9 [alg.min.max] min/max/minmax requirements Yes 3 2240⁽ⁱ⁾ Resolved 32.7.4 [thread.condition.condvar] Probable misuse of term "function scope" in [thread.condition] Yes 2241⁽ⁱ⁾ Resolved 17.14 [support.runtime] <cstdalign> and #define of alignof Yes 2 2242⁽ⁱ⁾ NAD 26.7.1 [alg.copy] [uninitialized_]copy_n() defect Yes 2 2243⁽ⁱ⁾ C++20 31.7.5.4 [istream.unformatted] istream::putback problem Yes 3 2244⁽ⁱ⁾ C++17 31.7.5.4 [istream.unformatted] Issue on basic_istream::seekg Yes 3 2245⁽ⁱ⁾ Resolved 32.10.10.2 [futures.task.members] packaged_task::reset() memory allocation Yes 3 2246⁽ⁱ⁾ C++14 20.3.1.3.4 [unique.ptr.single.asgn] unique_ptr assignment effects w.r.t. deleter Yes 2247⁽ⁱ⁾ C++14 21.3.6.2 [meta.unary.cat] Type traits and std::nullptr_t Yes 2248⁽ⁱ⁾ New 17.3.5 [numeric.limits] numeric_limits::is_iec559 misnamed No 4 2249⁽ⁱ⁾ Resolved 31.13 [c.files] [CD] Remove gets from <cstdio> Yes 2250⁽ⁱ⁾ C++17 22.9.2.2 [bitset.cons] Follow-up On Library Issue 2207 Yes 3 2251⁽ⁱ⁾ NAD 17.2 [support.types] C++ library should define ssize_t Yes 3 2252⁽ⁱ⁾ C++14 23.3.13.5 [vector.modifiers] Strong guarantee on vector::push_back() still broken with C++11? Yes 2253⁽ⁱ⁾ NAD Arrays 99 [arrays.ts::dynarray.overview] [arrays.ts] dynarray should state which container requirements aren't met Yes 0 2254⁽ⁱ⁾ NAD Arrays 99 [arrays.ts::container.requirements.general] [arrays.ts] Is dynarray an allocator-aware container? Yes 3 2255⁽ⁱ⁾ NAD Arrays 99 [arrays.ts::dynarray.cons] [arrays.ts] dynarray constructor ambiguity Yes 0 2256⁽ⁱ⁾ NAD 23.3.13.5 [vector.modifiers] On vector iterator invalidation Yes 3 2257⁽ⁱ⁾ C++14 23.2.2 [container.requirements.general] Simplify container requirements with the new algorithms Yes 2258⁽ⁱ⁾ C++14 23.2.7 [associative.reqmts] a.erase(q1, q2) unable to directly return q2 Yes 0 2259⁽ⁱ⁾ C++17 16.4.6.5 [member.functions] Issues in 17.6.5.5 rules for member functions Yes 3 2260⁽ⁱ⁾ C++17 16.4.4.6 [allocator.requirements] Missing requirement for Allocator::pointer Yes 3 2261⁽ⁱ⁾ C++17 23.2 [container.requirements] Are containers required to use their 'pointer' type internally? Yes 2 2262⁽ⁱ⁾ Open 20.3.1.3 [unique.ptr.single] Requirement for unique_ptr<T>::get_deleter()(p) to be able to destroy the unique_ptr Yes 3 2263⁽ⁱ⁾ C++14 16.4.4.6 [allocator.requirements] Comparing iterators and allocator pointers with different const-character Yes 1 2264⁽ⁱ⁾ NAD Arrays 99 [arrays.ts::dynarray] [arrays.ts] std::dynarray defines its initializer-list constructor in terms of a non-existent constructor Yes 1 2265⁽ⁱ⁾ Open 32.5.4 [atomics.order] 29.3p9 appears to rule out some acceptable executions No 4 2266⁽ⁱ⁾ C++17 23.2.4 [sequence.reqmts] vector and deque have incorrect insert requirements Yes 2 2267⁽ⁱ⁾ New 26.8.2.4 [partial.sort.copy] partial_sort_copy underspecified for ranges of two different types No 3 2268⁽ⁱ⁾ C++14 27.4.3 [basic.string] Setting a default argument in the declaration of a member function assign of std::basic_string Yes 2269⁽ⁱ⁾ New 23.2.2 [container.requirements.general] Container iterators and argument-dependent lookup No 4 2270⁽ⁱ⁾ NAD 27.4.5 [string.conversions] Inconsistent to_string overloads Yes 2271⁽ⁱ⁾ C++14 28.6.6 [re.traits] regex_traits::lookup_classname specification unclear Yes 2272⁽ⁱ⁾ C++14 31.7.9 [quoted.manip] quoted should use char_traits::eq for character comparison Yes 2273⁽ⁱ⁾ C++17 28.6.10.2 [re.alg.match] regex_match ambiguity Yes 2 2274⁽ⁱ⁾ Resolved 23.4.3.3 [map.access] Does map::operator[] value-initialize or default-insert a missing element? Yes 3 2275⁽ⁱ⁾ C++14 22.4.5 [tuple.creation] [CD] Why is forward_as_tuple not constexpr? Yes 2276⁽ⁱ⁾ C++17 32.10 [futures] Missing requirement on std::promise::set_exception Yes 2277⁽ⁱ⁾ NAD Arrays 99 [arrays.ts::iterator.range] [arrays.ts] <dynarray> is missing in 24.7/1 Yes 3 2278⁽ⁱ⁾ C++14 30.2 [time.syn] User-defined literals for Standard Library types Yes 2279⁽ⁱ⁾ NAD 23.3.11.5 [list.ops] Carefully state effects of list::splice function Yes 2280⁽ⁱ⁾ C++14 24.7 [iterator.range] begin/end for arrays should be constexpr and noexcept Yes 2281⁽ⁱ⁾ NAD Editorial 16.4.3.3 [using.linkage] C99 cross-reference typo in [using.linkage] Yes 2282⁽ⁱ⁾ Resolved 5.3.3 [fund.ts::optional.object.assign] [fund.ts] Incorrect is_assignable constraint in optional::op=(U&&) Yes 2283⁽ⁱ⁾ Resolved 5.9 [fund.ts::optional.comp_with_t] [fund.ts] optional declares and then does not define an operator<() Yes 2284⁽ⁱ⁾ C++14 20.2.9 [allocator.traits] Inconsistency in allocator_traits::max_size Yes 2285⁽ⁱ⁾ C++14 24.5.1 [reverse.iterators] make_reverse_iterator Yes 2286⁽ⁱ⁾ Open 31.8.2.5 [stringbuf.virtuals] stringbuf::underflow() underspecified Yes 4 2287⁽ⁱ⁾ Resolved 5.3.3 [fund.ts::optional.object.assign] [fund.ts] Incorrect exception safety for optional copy assignment operator Yes 2288⁽ⁱ⁾ C++14 32.6.4.4 [thread.sharedmutex.requirements] Inconsistent requirements for shared mutexes Yes 2289⁽ⁱ⁾ Open 22.3.2 [pairs.pair] constexpr guarantees of defaulted functions still insufficient No 3 2290⁽ⁱ⁾ Open 21 [meta] Top-level "SFINAE"-based constraints should get a separate definition in Clause 17 Yes 3 2291⁽ⁱ⁾ C++14 16.4.4.5 [hash.requirements] std::hash is vulnerable to collision DoS attack Yes 2292⁽ⁱ⁾ Resolved 16.3.2.4 [structure.specifications] Find a better phrasing for "shall not participate in overload resolution" Yes 3 2293⁽ⁱ⁾ C++14 28.3.4.3.3.3 [facet.num.put.virtuals] Wrong facet used by num_put::do_put Yes 0 2294⁽ⁱ⁾ Resolved 29.7 [c.math] <cstdlib> should declare abs(double) Yes 2 2295⁽ⁱ⁾ C++23 28.3.3.1.3 [locale.cons] Locale name when the provided Facet is a nullptr Yes 3 2296⁽ⁱ⁾ C++17 20.2.11 [specialized.addressof] std::addressof should be constexpr Yes 3 2297⁽ⁱ⁾ NAD 22.2.3 [utility.exchange] [CD] Missing type requirements for std::exchange Yes 2298⁽ⁱ⁾ C++14 21.3.6.4 [meta.unary.prop] [CD] is_nothrow_constructible is always false because of create<> Yes 2299⁽ⁱ⁾ C++14 23.2.7 [associative.reqmts] [CD] Effects of inaccessible key_compare::is_transparent type are not clear Yes 1 2300⁽ⁱ⁾ C++14 23.4.3 [map] [CD] Redundant sections for map and multimap members should be removed Yes 2301⁽ⁱ⁾ C++14 22.4.5 [tuple.creation] Why is std::tie not constexpr? Yes 2 2302⁽ⁱ⁾ Pending NAD 17.6.3.4 [new.delete.placement] Passing null pointer to placement new Yes 2 2303⁽ⁱ⁾ New 17.6.3.4 [new.delete.placement] Explicit instantiation of std::vector<UserType> broken? No 3 2304⁽ⁱ⁾ C++14 23.2.8 [unord.req] Complexity of count in unordered associative containers Yes 0 2305⁽ⁱ⁾ NAD 5.3.1 [fund.ts::optional.object.ctor] [fund.ts] optional forwarding construction/assignment Yes 4 2306⁽ⁱ⁾ C++14 28.6.9 [re.results] match_results::reference should be value_type&, not const value_type& Yes 4 2307⁽ⁱ⁾ LEWG 23 [containers] Should the Standard Library use explicit only when necessary? No 2 2308⁽ⁱ⁾ C++14 23.2.2 [container.requirements.general] Clarify container destructor requirements w.r.t. std::array Yes 0 2309⁽ⁱ⁾ C++17 32.6.4.2 [thread.mutex.requirements.mutex] mutex::lock() should not throw device_or_resource_busy Yes 0 2310⁽ⁱ⁾ C++17 23.3.3.1 [array.overview] Public exposition only member in std::array Yes 4 2311⁽ⁱ⁾ NAD 16.4.4.6 [allocator.requirements] Allocator requirements should be further minimized Yes 2 2312⁽ⁱ⁾ C++17 22.4.4.2 [tuple.cnstr] tuple's constructor constraints need to be phrased more precisely Yes 2 2313⁽ⁱ⁾ C++14 22.4.7 [tuple.helper] tuple_size should always derive from integral_constant<size_t, N> Yes 2 2314⁽ⁱ⁾ C++14 21.2.1 [intseq.general] apply() should return decltype(auto) and use decay_t before tuple_size Yes 0 2315⁽ⁱ⁾ C++14 20.3.2.3 [util.smartptr.weak] weak_ptr should be movable Yes 2 2316⁽ⁱ⁾ C++14 20.3.2.3.6 [util.smartptr.weak.obs] weak_ptr::lock() should be atomic Yes 0 2317⁽ⁱ⁾ C++14 21.3.7 [meta.unary.prop.query] The type property queries should be UnaryTypeTraits returning size_t Yes 0 2318⁽ⁱ⁾ Resolved 27.4.3 [basic.string] basic_string's wording has confusing relics from the copy-on-write era Yes 4 2319⁽ⁱ⁾ NAD 27.4.3.3 [string.cons] basic_string's move constructor should not be noexcept Yes 1 2320⁽ⁱ⁾ C++14 23.2.2 [container.requirements.general] select_on_container_copy_construction() takes allocators, not containers Yes 0 2321⁽ⁱ⁾ Open 23.2.2 [container.requirements.general] Moving containers should (usually) be required to preserve iterators Yes 3 2322⁽ⁱ⁾ C++14 23.2.7 [associative.reqmts] Associative(initializer_list, stuff) constructors are underspecified Yes 0 2323⁽ⁱ⁾ C++14 23.3.13.3 [vector.capacity] vector::resize(n, t)'s specification should be simplified Yes 0 2324⁽ⁱ⁾ C++14 24.5.2.2.2 [back.insert.iter.ops] Insert iterator constructors should use addressof() Yes 0 2325⁽ⁱ⁾ C++17 26.8.9 [alg.min.max] minmax_element()'s behavior differing from max_element()'s should be noted Yes 3 2326⁽ⁱ⁾ NAD 29.5.3.1 [rand.req.genl] uniform_int_distribution<unsigned char> should be permitted Yes 2 2327⁽ⁱ⁾ NAD 29.5.3.3 [rand.req.urng] Non-power-of-two URNGs should be forbidden Yes 2328⁽ⁱ⁾ C++17 31.7.5.6 [istream.rvalue] Rvalue stream extraction should use perfect forwarding Yes 3 2329⁽ⁱ⁾ C++14 28.6.3 [re.syn] regex_match()/regex_search() with match_results should forbid temporary strings Yes 2 2330⁽ⁱ⁾ C++14 28.6.4.2 [re.synopt] regex("meow", regex::icase) is technically forbidden but should be permitted Yes 0 2331⁽ⁱ⁾ Open 28.6.4.2 [re.synopt] regex_constants::collate's effects are inaccurately summarized Yes 3 2332⁽ⁱ⁾ C++14 28.6.11 [re.iter] regex_iterator/regex_token_iterator should forbid temporary regexes Yes 2 2333⁽ⁱ⁾ Resolved 5.11 [fund.ts::optional.hash] [fund.ts] Hashing disengaged optional<T> objects Yes 2334⁽ⁱ⁾ Resolved 32.5.8.2 [atomics.types.operations] atomic's default constructor requires "uninitialized" state even for types with non-trivial default-constructor Yes 2335⁽ⁱ⁾ NAD 23.3.3 [array] array<array<int, 3>, 4> should be layout-compatible with int[4][3] Yes 3 2336⁽ⁱ⁾ C++17 21.3.6.4 [meta.unary.prop] is_trivially_constructible/is_trivially_assignable traits are always false Yes 3 2337⁽ⁱ⁾ NAD 20.3.2.2.6 [util.smartptr.shared.obs] shared_ptr operator*() should not be noexcept Yes 2 2338⁽ⁱ⁾ Open 28.6.6 [re.traits] §[re.traits]/7 expects of locale facets something not guaranteed by [locale.facet]/4 Yes 3 2339⁽ⁱ⁾ C++14 26.8.3 [alg.nth.element] Wording issue in nth_element Yes 0 2340⁽ⁱ⁾ C++17 16.4.5.6 [replacement.functions] Replacement allocation functions declared as inline Yes 2 2341⁽ⁱ⁾ C++14 31.7.6.2.5 [ostream.seeks] Inconsistency between basic_ostream::seekp(pos) and basic_ostream::seekp(off, dir) Yes 0 2342⁽ⁱ⁾ New 31.7.6.2 [ostream] User conversion to wchar_t const* or to wchar_t not invoked for operator<< Yes 4 2343⁽ⁱ⁾ Resolved 28.6.12 [re.grammar] Is the value of the ECMA-262 RegExp object's multiline property really false? Yes 2 2344⁽ⁱ⁾ C++14 31.7.9 [quoted.manip] quoted()'s interaction with padding is unclear Yes 1 2345⁽ⁱ⁾ NAD 21.2.2 [intseq.intseq] integer_sequence should have a self-typedef ::type Yes 2 2346⁽ⁱ⁾ C++14 21.3.4 [meta.help] integral_constant's member functions should be marked noexcept Yes 0 2347⁽ⁱ⁾ NAD 24.5.1.6 [reverse.iter.elem] reverse_iterator::operator[] calls const version of current[] Yes 2 2348⁽ⁱ⁾ Open 22.9.2 [template.bitset] charT('1') is not the wide equivalent of '1' Yes 3 2349⁽ⁱ⁾ Resolved 31.7.5.3.1 [istream.formatted.reqmts] Clarify input/output function rethrow behavior Yes 3 2350⁽ⁱ⁾ C++14 26.8.9 [alg.min.max] min, max, and minmax should be constexpr Yes 1 2351⁽ⁱ⁾ NAD 29.5.4 [rand.eng] Does .seed() completely reset state of engine? Yes 2 2352⁽ⁱ⁾ NAD 29.5.8.1 [rand.util.seedseq] Is a default-constructed std::seed_seq intended to produce a predictable .generate()? Yes 2 2353⁽ⁱ⁾ C++17 24.4.3 [iterator.operations] std::next is over-constrained Yes 4 2354⁽ⁱ⁾ C++17 23.4.3.1 [map.overview] Unnecessary copying when inserting into maps with braced-init syntax Yes 2 2355⁽ⁱ⁾ NAD 27.4.7 [basic.string.literals] "s" UDL suffix should be reserved for a compile-time string library type Yes 1 2356⁽ⁱ⁾ C++14 23.2.8 [unord.req] Stability of erasure in unordered associative containers Yes 2 2357⁽ⁱ⁾ C++14 26.8.5 [alg.partitions] Remaining "Assignable" requirement Yes 0 2358⁽ⁱ⁾ Open 21.3.6.4 [meta.unary.prop] Apparently-bogus definition of is_empty type trait Yes 3 2359⁽ⁱ⁾ C++14 28.6.4.2 [re.synopt] How does regex_constants::nosubs affect basic_regex::mark_count()? Yes 0 2360⁽ⁱ⁾ C++14 24.5.1.2 [reverse.iterator] reverse_iterator::operator*() is unimplementable Yes 1 2361⁽ⁱ⁾ C++17 20.3.1.3 [unique.ptr.single] Apply 2299 resolution throughout library Yes 2362⁽ⁱ⁾ New 23.2.7 [associative.reqmts] unique, associative emplace() should not move/copy the mapped_type constructor arguments when no insertion happens No 3 2363⁽ⁱ⁾ Resolved 32.6.4.5.2 [thread.sharedtimedmutex.class] Defect in 30.4.1.4.1 [thread.sharedtimedmutex.class] Yes 2 2364⁽ⁱ⁾ C++17 23.3.5.4 [deque.modifiers] deque and vector pop_back don't specify iterator invalidation requirements Yes 0 2365⁽ⁱ⁾ C++17 20.3.2.2 [util.smartptr.shared] Missing noexcept in shared_ptr::shared_ptr(nullptr_t) Yes 2366⁽ⁱ⁾ New 24.6.4 [istreambuf.iterator] istreambuf_iterator end-of-stream equality Yes 3 2367⁽ⁱ⁾ C++17 21.3.6.4 [meta.unary.prop] pair and tuple are not correctly implemented for is_constructible with no args Yes 3 2368⁽ⁱ⁾ Resolved 17.6.3 [new.delete] Replacing global operator new Yes 2 2369⁽ⁱ⁾ C++17 26.8.9 [alg.min.max] constexpr max(initializer_list) vs max_element Yes 3 2370⁽ⁱ⁾ Resolved 22.10.17.3 [func.wrap.func] Operations involving type-erased allocators should not be noexcept in std::function Yes 3 2371⁽ⁱ⁾ TS 3.3.1 [fund.ts::meta.type.synop] [fund.ts] No template aliases defined for new type traits Yes 0 2372⁽ⁱ⁾ NAD 27.4.3 [basic.string] Assignment from int to std::string Yes 4 2373⁽ⁱ⁾ NAD 16.4.6 [conforming] Make new entities and names in namespace std conforming extensions Yes 3 2374⁽ⁱ⁾ TS 5.3.5 [fund.ts::optional.object.observe] [fund.ts] Remarks for optional::to_value are too restrictive Yes 0 2375⁽ⁱ⁾ Resolved 24.3.1 [iterator.requirements.general] Is [iterator.requirements.general]/9 too broadly applied? Yes 3 2376⁽ⁱ⁾ C++17 20.3.2.1 [util.smartptr.weak.bad] bad_weak_ptr::what() overspecified Yes 2377⁽ⁱ⁾ C++17 20.2.5 [ptr.align] std::align requirements overly strict Yes 0 2378⁽ⁱ⁾ C++17 17.6.4.1 [bad.alloc] Behaviour of standard exception types Yes 0 2379⁽ⁱ⁾ NAD 32.2.3 [thread.req.native] Obtaining native handle of the current thread Yes 2380⁽ⁱ⁾ C++17 16.4.2.3 [headers] May <cstdlib> provide long ::abs(long) and long long ::abs(long long)? Yes 2 2381⁽ⁱ⁾ C++23 28.3.4.3.2.3 [facet.num.get.virtuals] Inconsistency in parsing floating point numbers Yes 2 2382⁽ⁱ⁾ Pending NAD 16.4.6.9 [reentrancy] Unclear order of container update versus object destruction on removing an object Yes 2 2383⁽ⁱ⁾ Open 30.5.9 [time.duration.literals] Overflow cannot be ill-formed for chrono::duration integer literals No 3 2384⁽ⁱ⁾ C++17 16.4.4.6 [allocator.requirements] Allocator's deallocate function needs better specification Yes 3 2385⁽ⁱ⁾ C++17 22.10.17.3 [func.wrap.func] function::assign allocator argument doesn't make sense Yes 2 2386⁽ⁱ⁾ NAD 22.10.17.3.2 [func.wrap.func.con] function::operator= handles allocators incorrectly Yes 1 2387⁽ⁱ⁾ C++17 22.10.4 [func.require] More nested types that must be accessible and unambiguous Yes 2388⁽ⁱ⁾ NAD 22.2.3 [utility.exchange] Handling self-assignment in the proposed library function std::exchange Yes 2 2389⁽ⁱ⁾ TS 4.2.1 [fund.ts::func.wrap.func.con] [fund.ts] function::operator= is over-specified and handles allocators incorrectly Yes 2 2390⁽ⁱ⁾ TS 3.3.2 [fund.ts::meta.trans.other] [fund.ts] Invocation types and rvalues Yes 2391⁽ⁱ⁾ Resolved 27.4.3 [basic.string] basic_string is missing non-const data() Yes 3 2392⁽ⁱ⁾ WP 3.36 [defns.ntcts] "character type" is used but not defined Yes 3 2393⁽ⁱ⁾ C++17 22.10.17.3 [func.wrap.func] std::function's Callable definition is broken Yes 2 2394⁽ⁱ⁾ C++17 28.3.3.1.4 [locale.members] locale::name specification unclear — what is implementation-defined? Yes 3 2395⁽ⁱ⁾ TS 4.2 [fund.ts::func.wrap.func] [fund.ts] Preconditions: is defined nowhere Yes 2 2396⁽ⁱ⁾ C++17 21.3.9.7 [meta.trans.other] underlying_type doesn't say what to do for an incomplete enumeration type Yes 0 2397⁽ⁱ⁾ Resolved 21.3.9.7 [meta.trans.other] map<K, V>::emplace and explicit V constructors Yes 1 2398⁽ⁱ⁾ Open 17.7.3 [type.info] type_info's destructor shouldn't be required to be virtual Yes 3 2399⁽ⁱ⁾ C++17 20.3.2.2.2 [util.smartptr.shared.const] shared_ptr's constructor from unique_ptr should be constrained Yes 0 2400⁽ⁱ⁾ C++17 20.3.2.2.11 [util.smartptr.getdeleter] shared_ptr's get_deleter() should use addressof() Yes 0 2401⁽ⁱ⁾ C++17 22.10.17.3 [func.wrap.func] std::function needs more noexcept Yes 0 2402⁽ⁱ⁾ NAD 27.4.3.3 [string.cons] basic_string(const basic_string& str, size_type pos, size_type n = npos) shouldn't use Allocator() Yes 3 2403⁽ⁱ⁾ C++17 27.4.5 [string.conversions] stof() should call strtof() and wcstof() Yes 2 2404⁽ⁱ⁾ C++17 99 [mismatch] mismatch()'s complexity needs to be updated Yes 0 2405⁽ⁱ⁾ NAD 26.7.11 [alg.rotate] rotate()'s return value is incorrect when middle == first Yes 2406⁽ⁱ⁾ C++17 29.5.9.3.4 [rand.dist.bern.negbin] negative_binomial_distribution should reject p == 1 Yes 3 2407⁽ⁱ⁾ C++17 32.10.10.2 [futures.task.members] packaged_task(allocator_arg_t, const Allocator&, F&&) should neither be constrained nor explicit Yes 2408⁽ⁱ⁾ C++17 21.3.9.7 [meta.trans.other] SFINAE-friendly common_type/iterator_traits is missing in C++14 Yes 2409⁽ⁱ⁾ TS 3.3.2 [fund.ts::meta.trans.other] [fund.ts] SFINAE-friendly common_type/iterator_traits should be removed from the fundamental-ts Yes 2410⁽ⁱ⁾ TS 8.2.1.1 [fund.ts::memory.smartptr.shared.const] [fund.ts] shared_ptr<array>'s constructor from unique_ptr should be constrained Yes 0 2411⁽ⁱ⁾ C++17 20.3.2.2 [util.smartptr.shared] shared_ptr is only contextually convertible to bool Yes 0 2412⁽ⁱ⁾ C++20 32.10.6 [futures.promise] promise::set_value() and promise::get_future() should not race Yes 3 2413⁽ⁱ⁾ NAD 19.3 [assertions] assert macro is overconstrained Yes 4 2414⁽ⁱ⁾ Open 16.4.6.9 [reentrancy] Member function reentrancy should be implementation-defined Yes 3 2415⁽ⁱ⁾ C++17 20.3.2.2.2 [util.smartptr.shared.const] Inconsistency between unique_ptr and shared_ptr Yes 2 2416⁽ⁱ⁾ Resolved 6.3 [fund.ts::any.class] [fund.ts] std::experimental::any allocator support is unimplementable Yes 2417⁽ⁱ⁾ NAD 5.7 [fund.ts.v2::optional.relops] [fund.ts.v2] std::experimental::optional::operator< and LessThanComparable requirement Yes 2418⁽ⁱ⁾ TS 3.2.2 [fund.ts::tuple.apply] [fund.ts] apply does not work with member pointers Yes 0 2419⁽ⁱ⁾ Resolved 22.4.4.2 [tuple.cnstr] Clang's libc++ extension to std::tuple Yes 2420⁽ⁱ⁾ C++17 22.10.17.3 [func.wrap.func] function<void(ArgTypes...)> does not discard the return value of the target object Yes 1 2421⁽ⁱ⁾ New 20.2.5 [ptr.align] Non-specification of handling zero size in std::align [ptr.align] No 3 2422⁽ⁱ⁾ C++17 17.3.5.2 [numeric.limits.members] std::numeric_limits<T>::is_modulo description: "most machines" errata Yes 2 2423⁽ⁱ⁾ New 29.6.5 [template.slice.array] Missing specification slice_array, gslice_array, mask_array, indirect_array copy constructor Yes 4 2424⁽ⁱ⁾ Resolved 32.5.8 [atomics.types.generic] 29.5 should state that atomic types are not trivially copyable Yes 2 2425⁽ⁱ⁾ C++17 17.6.3 [new.delete] operator delete(void*, size_t) doesn't invalidate pointers sufficiently Yes 0 2426⁽ⁱ⁾ C++17 32.5.8.2 [atomics.types.operations] Issue about compare_exchange Yes 1 2427⁽ⁱ⁾ C++17 23.3.1 [sequences.general] Container adaptors as sequence containers, redux Yes 0 2428⁽ⁱ⁾ C++17 16.4.3.2 [using.headers] "External declaration" used without being defined Yes 0 2429⁽ⁱ⁾ NAD 31.8.4 [ostringstream] std::basic_ostringstream is missing an allocator-extended constructor Yes 2430⁽ⁱ⁾ NAD 23.2.7 [associative.reqmts] Heterogeneous container lookup should be enabled using meta-function instead of nested type Yes 2431⁽ⁱ⁾ New 28.6.2 [re.req] Missing regular expression traits requirements No 3 2432⁽ⁱ⁾ NAD 17.11 [support.initlist] initializer_list assignability Yes 2 2433⁽ⁱ⁾ C++17 26.11 [specialized.algorithms] uninitialized_copy()/etc. should tolerate overloaded operator& Yes 0 2434⁽ⁱ⁾ C++17 20.3.2.2.6 [util.smartptr.shared.obs] shared_ptr::use_count() is efficient Yes 0 2435⁽ⁱ⁾ C++17 22.10.6.5 [refwrap.invoke] reference_wrapper::operator()'s Remark should be deleted Yes 4 2436⁽ⁱ⁾ C++17 23.2.7 [associative.reqmts] Comparators for associative containers should always be CopyConstructible Yes 2 2437⁽ⁱ⁾ C++17 24.3.5.2 [iterator.iterators] iterator_traits<OutIt>::reference can and can't be void Yes 3 2438⁽ⁱ⁾ C++17 D.17 [depr.iterator] std::iterator inheritance shouldn't be mandated Yes 3 2439⁽ⁱ⁾ C++17 26.7.9 [alg.unique] unique_copy() sometimes can't fall back to reading its output Yes 3 2440⁽ⁱ⁾ C++17 29.5.8.1 [rand.util.seedseq] seed_seq::size() should be noexcept Yes 0 2441⁽ⁱ⁾ C++17 32.5.8 [atomics.types.generic] Exact-width atomic typedefs should be provided Yes 0 2442⁽ⁱ⁾ C++17 32.6.7.2 [thread.once.callonce] call_once() shouldn't DECAY_COPY() Yes 2443⁽ⁱ⁾ Resolved 23.3.3 [array] std::array member functions should be constexpr Yes 2444⁽ⁱ⁾ C++20 26.8.8.5 [sort.heap] Inconsistent complexity for std::sort_heap Yes 3 2445⁽ⁱ⁾ Resolved 99 [depr.util.smartptr.shared.atomic] "Stronger" memory ordering Yes 2446⁽ⁱ⁾ NAD 22.4.1 [tuple.general] Unspecialized std::tuple_size should be defined Yes 2447⁽ⁱ⁾ C++17 16.4.4.6 [allocator.requirements] Allocators and volatile-qualified value types Yes 4 2448⁽ⁱ⁾ C++17 23.2.2 [container.requirements.general] Non-normative Container destructor specification Yes 0 2449⁽ⁱ⁾ NAD 23.3.13.5 [vector.modifiers] vector::insert invalidates end()? Yes 3 2450⁽ⁱ⁾ C++17 22.10.8 [comparisons] (greater|less|greater_equal|less_equal)<void> do not yield a total order for pointers Yes 2 2451⁽ⁱ⁾ TS 5.3 [fund.ts.v2::optional.object] [fund.ts.v2] optional<T> should 'forward' T's implicit conversions Yes 2452⁽ⁱ⁾ Core 21 [meta] is_constructible, etc. and default arguments No 3 2453⁽ⁱ⁾ New 17.11 [support.initlist] §[iterator.range] and now [iterator.container] aren't available via <initializer_list> No 3 2454⁽ⁱ⁾ C++17 99 [depr.storage.iterator] Add raw_storage_iterator::base() member Yes 0 2455⁽ⁱ⁾ C++17 16.4.4.6 [allocator.requirements] Allocator default construction should be allowed to throw Yes 2456⁽ⁱ⁾ Resolved 22.2 [utility] Incorrect exception specifications for 'swap' throughout library Yes 1 2457⁽ⁱ⁾ NAD 24.7 [iterator.range] std::begin() and std::end() do not support multi-dimensional arrays correctly Yes 3 2458⁽ⁱ⁾ C++17 17.6 [support.dynamic] N3778 and new library deallocation signatures Yes 2 2459⁽ⁱ⁾ C++17 29.4.7 [complex.value.ops] std::polar should require a non-negative rho Yes 0 2460⁽ⁱ⁾ C++17 21.3.9.7 [meta.trans.other] LWG issue 2408 and value categories Yes 2 2461⁽ⁱ⁾ New 16.4.4.6 [allocator.requirements] Interaction between allocators and container exception safety guarantees No 3 2462⁽ⁱ⁾ C++17 31.5.2 [ios.base] std::ios_base::failure is overspecified Yes 3 2463⁽ⁱ⁾ TS 10.3 [fund.ts::alg.random.sample] [fund.ts] Incorrect complexity for sample() algorithm Yes 0 2464⁽ⁱ⁾ C++17 23.4.3.4 [map.modifiers] try_emplace and insert_or_assign misspecified Yes 2 2465⁽ⁱ⁾ Resolved 21.3.9.7 [meta.trans.other] SFINAE-friendly common_type is nearly impossible to specialize correctly and regresses key functionality Yes 2 2466⁽ⁱ⁾ C++17 16.4.4.6 [allocator.requirements] allocator_traits::max_size() default behavior is incorrect Yes 3 2467⁽ⁱ⁾ C++17 16.4.4.6 [allocator.requirements] is_always_equal has slightly inconsistent default Yes 0 2468⁽ⁱ⁾ C++17 16.4.5.9 [res.on.arguments] Self-move-assignment of library types Yes 2 2469⁽ⁱ⁾ C++17 23.4.3.3 [map.access] Wrong specification of Requires clause of operator[] for map and unordered_map Yes 3 2470⁽ⁱ⁾ C++17 16.4.4.6 [allocator.requirements] Allocator's destroy function should be allowed to fail to instantiate Yes 2471⁽ⁱ⁾ Open 26.7.1 [alg.copy] copy_n's number of InputIterator increments unspecified No 3 2472⁽ⁱ⁾ New 22.4.9 [tuple.rel] Heterogeneous comparisons in the standard library can result in ambiguities No 3 2473⁽ⁱ⁾ C++17 31.10.3.5 [filebuf.virtuals] basic_filebuf's relation to C FILE semantics Yes 2 2474⁽ⁱ⁾ NAD 29.7 [c.math] <cmath> functions unfriendly to integral_constant arguments Yes 4 2475⁽ⁱ⁾ C++17 27.4.3.6 [string.access] Allow overwriting of std::basic_string terminator with charT() to allow cleaner interoperation with legacy APIs Yes 3 2476⁽ⁱ⁾ C++17 20.6.1 [allocator.adaptor.syn] scoped_allocator_adaptor is not assignable Yes 0 2477⁽ⁱ⁾ C++17 23.3.5.4 [deque.modifiers] Inconsistency of wordings in std::vector::erase() and std::deque::erase() Yes 0 2478⁽ⁱ⁾ New 99 [depr.conversions.string] Unclear how wstring_convert uses cvtstate No 4 2479⁽ⁱ⁾ New 99 [depr.conversions.buffer] Unclear how wbuffer_convert uses cvtstate No 4 2480⁽ⁱ⁾ New 99 [depr.conversions.buffer] Error handling of wbuffer_convert unclear No 4 2481⁽ⁱ⁾ New 99 [depr.conversions.string] wstring_convert should be more precise regarding "byte-error string" etc. No 4 2482⁽ⁱ⁾ C++17 27.5 [c.strings] §[c.strings] Table 73 mentions nonexistent functions Yes 2483⁽ⁱ⁾ C++17 17.9.8 [except.nested] throw_with_nested() should use is_final Yes 2 2484⁽ⁱ⁾ C++17 17.9.8 [except.nested] rethrow_if_nested() is doubly unimplementable Yes 2 2485⁽ⁱ⁾ C++17 22.4.8 [tuple.elem] get() should be overloaded for const tuple&& Yes 1 2486⁽ⁱ⁾ C++17 22.10.4 [func.require] mem_fn() should be required to use perfect forwarding Yes 0 2487⁽ⁱ⁾ C++17 22.10.15.4 [func.bind.bind] bind() should be const-overloaded, not cv-overloaded Yes 2 2488⁽ⁱ⁾ C++17 22.10.15.5 [func.bind.place] Placeholders should be allowed and encouraged to be constexpr Yes 2 2489⁽ⁱ⁾ C++17 22.10.16 [func.memfn] mem_fn() should be noexcept Yes 0 2490⁽ⁱ⁾ New 28.6 [re] <regex> needs lots of noexcept No 3 2491⁽ⁱ⁾ New 22.10.8 [comparisons] std::less<T*> in constant expression Yes 3 2492⁽ⁱ⁾ C++17 26.8 [alg.sorting] Clarify requirements for comp Yes 0 2493⁽ⁱ⁾ New 17.11 [support.initlist] initializer_list supports incomplete classes No 4 2494⁽ⁱ⁾ TS 10.2 [fund.ts.v2::iterator.ostream.joiner] [fund.ts.v2] ostream_joiner needs noexcept Yes 0 2495⁽ⁱ⁾ C++17 20.3.2.2.2 [util.smartptr.shared.const] There is no such thing as an Exception Safety element Yes 0 2496⁽ⁱ⁾ New 21.3.6.4 [meta.unary.prop] Certain hard-to-avoid errors not in the immediate context are not allowed to be triggered by the evaluation of type traits No 3 2497⁽ⁱ⁾ New 31.7.6.2.4 [ostream.sentry] Use of uncaught_exception() Yes 3 2498⁽ⁱ⁾ Resolved 31.7.5.6 [istream.rvalue] operator>>(basic_istream&&, T&&) returns basic_istream&, but should probably return basic_istream&& Yes 3 2499⁽ⁱ⁾ Resolved 31.7.5.3.3 [istream.extractors] operator>>(basic_istream&, CharT*) makes it hard to avoid buffer overflows Yes 2 2500⁽ⁱ⁾ TS 8.2.1.2 [fund.ts.v2::memory.smartptr.shared.obs] [fund.ts.v2] fundts.memory.smartptr.shared.obs/6 should apply to cv-unqualified void Yes 0 2501⁽ⁱ⁾ Resolved 22.10.17.3 [func.wrap.func] std::function requires POCMA/POCCA Yes 3 2502⁽ⁱ⁾ Resolved 22.10.17.3 [func.wrap.func] std::function does not use allocator::construct Yes 3 2503⁽ⁱ⁾ C++17 28.6.4.2 [re.synopt] multiline option should be added to syntax_option_type Yes 2 2504⁽ⁱ⁾ New 31.6.3 [streambuf] basic_streambuf is not an abstract class No 3 2505⁽ⁱ⁾ Resolved 99 [auto.ptr.conv] auto_ptr_ref creation requirements underspecified Yes 4 2506⁽ⁱ⁾ SG1 6.10.2 [intro.multithread] Underspecification of atomics No 3 2507⁽ⁱ⁾ New 99 [depr.locale.stdcvt] codecvt_mode should be a bitmask type No 3 2508⁽ⁱ⁾ New 17.6.3.5 [new.delete.dataraces] §[new.delete.dataraces] wording needs to be updated No 3 2509⁽ⁱ⁾ TS 6.4 [fund.ts.v2::any.nonmembers] [fund.ts.v2] any_cast doesn't work with rvalue reference targets and cannot move with a value target Yes 2 2510⁽ⁱ⁾ C++17 17.6 [support.dynamic] Tag types should not be DefaultConstructible Yes 2 2511⁽ⁱ⁾ Resolved 20.6.4 [allocator.adaptor.members] scoped_allocator_adaptor piecewise construction does not require CopyConstructible Yes 3 2512⁽ⁱ⁾ Open 28.3.4.6.2.3 [locale.time.get.virtuals] Y2K bites; what is an "unambiguous year identifier"? No 4 2513⁽ⁱ⁾ New 27.1 [strings.general] Missing requirements for basic_string::value_type No 4 2514⁽ⁱ⁾ C++17 21.3.2 [meta.rqmts] Type traits must not be final Yes 3 2515⁽ⁱ⁾ TS 8.12.6 [fund.ts.v2::memory.observer.ptr.special] [fund.ts.v2] Certain comparison operators of observer_ptr do not match synopsis Yes 0 2516⁽ⁱ⁾ TS 8.12.1 [fund.ts.v2::memory.observer.ptr.overview] [fund.ts.v2] Public "exposition only" members in observer_ptr Yes 2 2517⁽ⁱ⁾ TS 3.7.5 [fund.ts.v2::propagate_const.assignment] [fund.ts.v2] Two propagate_const assignment operators have incorrect return type Yes 0 2518⁽ⁱ⁾ TS 3.7.10 [fund.ts.v2::propagate_const.algorithms] [fund.ts.v2] Non-member swap for propagate_const should call member swap Yes 3 2519⁽ⁱ⁾ C++17 24.3.5.7 [random.access.iterators] Iterator operator-= has gratuitous undefined behaviour Yes 2 2520⁽ⁱ⁾ C++17 20.3.1.4.2 [unique.ptr.runtime.ctor] N4089 broke initializing unique_ptr<T[]> from a nullptr Yes 2 2521⁽ⁱ⁾ TS 8.2.2.1 [fund.ts.v2::memory.smartptr.weak.const] [fund.ts.v2] weak_ptr's converting move constructor should be modified as well for array support Yes 2 2522⁽ⁱ⁾ TS 8.8 [fund.ts.v2::memory.resource.global] [fund.ts.v2] Contradiction in set_default_resource specification Yes 2 2523⁽ⁱ⁾ C++17 32.10.6 [futures.promise] std::promise synopsis shows two set_value_at_thread_exit()'s for no apparent reason Yes 0 2524⁽ⁱ⁾ Resolved 29.5.9.4.2 [rand.dist.pois.exp] generate_canonical can occasionally return 1.0 Yes 2 2525⁽ⁱ⁾ TS 4.2 [fund.ts.v2::func.wrap.func] [fund.ts.v2] get_memory_resource should be const and noexcept Yes 3 2526⁽ⁱ⁾ TS 4.2.2 [fund.ts.v2::func.wrap.func.mod] [fund.ts.v2] Incorrect precondition for experimental::function::swap Yes 0 2527⁽ⁱ⁾ TS 4.2.1 [fund.ts.v2::func.wrap.func.con] [fund.ts.v2] ALLOCATOR_OF for function::operator= has incorrect default Yes 3 2528⁽ⁱ⁾ New 22.4.4.2 [tuple.cnstr] Order of std::tuple construction unspecified No 3 2529⁽ⁱ⁾ Resolved 20.3.2.7 [util.smartptr.enab] Assigning to enable_shared_from_this::__weak_this twice Yes 3 2530⁽ⁱ⁾ Open 32.10.5 [futures.state] Clarify observable side effects of releasing a shared state No 3 2531⁽ⁱ⁾ C++17 32.10.7 [futures.unique.future] future::get should explicitly state that the shared state is released Yes 3 2532⁽ⁱ⁾ Open 32.10.6 [futures.promise] Satisfying a promise at thread exit Yes 3 2533⁽ⁱ⁾ SG1 99 [concurr.ts::futures.unique.future] [concurr.ts] Constrain threads where future::then can run a continuation No 2534⁽ⁱ⁾ C++17 31.7.6.6 [ostream.rvalue] Constrain rvalue stream operators Yes 3 2535⁽ⁱ⁾ NAD 27.4.4.4 [string.io] Inconsistency between ostream::write and ostream::operator<< Yes 2 2536⁽ⁱ⁾ C++17 17.15 [support.c.headers] What should <complex.h> do? Yes 2 2537⁽ⁱ⁾ C++17 23.6.4.3 [priqueue.cons.alloc] Constructors for priority_queue taking allocators should call make_heap Yes 0 2538⁽ⁱ⁾ NAD 99 [parallel.ts::parallel.alg.general.exec] [parallel.ts] Requirements on data race behavior of iterators and swap should be clarified Yes 2539⁽ⁱ⁾ TS 3.3.2 [fund.ts.v2::meta.trans.other] [fund.ts.v2] invocation_trait definition definition doesn't work for surrogate call functions Yes 2540⁽ⁱ⁾ C++17 23.2.8 [unord.req] unordered_multimap::insert hint iterator Yes 3 2541⁽ⁱ⁾ Resolved 99 [parallel.ts::parallel.alg.overloads] [parallel.ts] Headers for ExecutionPolicy algorithm overloads Yes 1 2542⁽ⁱ⁾ C++17 23.2.7 [associative.reqmts] Missing const requirements for associative containers Yes 1 2543⁽ⁱ⁾ Resolved 22.10.19 [unord.hash] LWG 2148 (hash support for enum types) seems under-specified Yes 2 2544⁽ⁱ⁾ C++17 24.6.4.3 [istreambuf.iterator.cons] istreambuf_iterator(basic_streambuf<charT, traits>* s) effects unclear when s is 0 Yes 3 2545⁽ⁱ⁾ C++17 22.10.15.4 [func.bind.bind] Simplify wording for bind without explicitly specified return type Yes 3 2546⁽ⁱ⁾ New 28.6.12 [re.grammar] Implementability of locale-sensitive UnicodeEscapeSequence matching No 4 2547⁽ⁱ⁾ New 22.10.8 [comparisons] Container requirements (and other library text) should say "strict total order", not just "total order" No 3 2548⁽ⁱ⁾ Resolved 31.13 [c.files] Missing vfscanf from <cstdio> Yes 3 2549⁽ⁱ⁾ C++17 22.4.4.2 [tuple.cnstr] Tuple EXPLICIT constructor templates that take tuple parameters end up taking references to temporaries and will create dangling references Yes 2 2550⁽ⁱ⁾ C++17 23.2.8 [unord.req] Wording of unordered container's clear() method complexity Yes 2 2551⁽ⁱ⁾ TS 8.2.1.1 [fund.ts.v2::memory.smartptr.shared.const] [fund.ts.v2] "Exception safety" cleanup in library fundamentals required Yes 0 2552⁽ⁱ⁾ NAD 23.6.4 [priority.queue] priority_queue doesn't work with move-only types Yes 3 2553⁽ⁱ⁾ NAD 7.3 [fund.ts.v2::string.view.cons] [fund.ts.v2] basic_string_view substring constructor Yes 2554⁽ⁱ⁾ Resolved 22.2.2 [utility.swap] Swapping multidimensional arrays is never noexcept Yes 2 2555⁽ⁱ⁾ TS 5.3 [fund.ts.v2::optional.object] [fund.ts.v2] No handling for over-aligned types in optional Yes 0 2556⁽ⁱ⁾ C++17 32.10.7 [futures.unique.future] Wide contract for future::share() Yes 3 2557⁽ⁱ⁾ C++17 21.3.10 [meta.logical] Logical operator traits are broken in the zero-argument case Yes 0 2558⁽ⁱ⁾ TS 3.3.3 [fund.ts.v2::meta.logical] [fund.ts.v2] Logical operator traits are broken in the zero-argument case Yes 0 2559⁽ⁱ⁾ C++17 19.3 [assertions] Error in LWG 2234's resolution Yes 0 2560⁽ⁱ⁾ C++17 21.3.6.4 [meta.unary.prop] is_constructible underspecified when applied to a function type Yes 0 2561⁽ⁱ⁾ Resolved 5.3.4 [fund.ts.v2::optional.object.swap] [fund.ts.v2] Incorrect exception specifications for 'swap' in C++ Extensions for Library Fundamentals Yes 3 2562⁽ⁱ⁾ C++17 22.10.8 [comparisons] Consistent total ordering of pointers by comparison functors Yes 3 2563⁽ⁱ⁾ NAD 16.4.6.5 [member.functions] LWG 2259 relaxes requirements, perhaps unintentionally Yes 2 2564⁽ⁱ⁾ Resolved 4.2 [fund.ts.v2::func.wrap.func] [fund.ts.v2] std::experimental::function constructors taking allocator arguments may throw exceptions Yes 3 2565⁽ⁱ⁾ C++17 22.10.17.3.2 [func.wrap.func.con] std::function's move constructor should guarantee nothrow for reference_wrappers and function pointers Yes 0 2566⁽ⁱ⁾ C++17 23.6 [container.adaptors] Requirements on the first template parameter of container adaptors Yes 0 2567⁽ⁱ⁾ C++17 21.3.10 [meta.logical] Specification of logical operator traits uses BaseCharacteristic, which is defined only for UnaryTypeTraits and BinaryTypeTraits Yes 2 2568⁽ⁱ⁾ TS 3.3.3 [fund.ts.v2::meta.logical] [fund.ts.v2] Specification of logical operator traits uses BaseCharacteristic, which is defined only for UnaryTypeTraits and BinaryTypeTraits Yes 2 2569⁽ⁱ⁾ C++17 21.3.10 [meta.logical] conjunction and disjunction requirements are too strict Yes 2 2570⁽ⁱ⁾ TS 3.3.3 [fund.ts.v2::meta.logical] [fund.ts.v2] conjunction and disjunction requirements are too strict Yes 2 2571⁽ⁱ⁾ C++17 23.4.3.4 [map.modifiers] §[map.modifiers]/2 imposes nonsensical requirement on insert(InputIterator, InputIterator) Yes 0 2572⁽ⁱ⁾ C++17 20.3.2.2.6 [util.smartptr.shared.obs] The remarks for shared_ptr::operator* should apply to cv-qualified void as well Yes 0 2573⁽ⁱ⁾ TS 8.2.1 [fund.ts.v2::memory.smartptr.shared] [fund.ts.v2] std::hash<std::experimental::shared_ptr<T>> does not work for arrays Yes 0 2574⁽ⁱ⁾ TS 4.2.1 [fund.ts.v2::func.wrap.func.con] [fund.ts.v2] std::experimental::function::operator=(F&&) should be constrained Yes 0 2575⁽ⁱ⁾ TS 4.2 [fund.ts.v2::func.wrap.func] [fund.ts.v2] experimental::function::assign should be removed Yes 0 2576⁽ⁱ⁾ C++17 24.6 [stream.iterators] istream_iterator and ostream_iterator should use std::addressof Yes 0 2577⁽ⁱ⁾ C++17 32.6.5.4.2 [thread.lock.unique.cons] {shared,unique}_lock should use std::addressof Yes 0 2578⁽ⁱ⁾ C++17 24.3 [iterator.requirements] Iterator requirements should reference iterator traits Yes 3 2579⁽ⁱ⁾ C++17 27.4.3.7.3 [string.assign] Inconsistency wrt Allocators in basic_string assignment vs. basic_string::assign Yes 0 2580⁽ⁱ⁾ NAD 27.4.3.3 [string.cons] Who is definitive: operator= or assign? Yes 4 2581⁽ⁱ⁾ C++17 21.3.3 [meta.type.synop] Specialization of <type_traits> variable templates should be prohibited Yes 0 2582⁽ⁱ⁾ C++17 21 [meta] §[res.on.functions]/2's prohibition against incomplete types shouldn't apply to type traits Yes 0 2583⁽ⁱ⁾ C++17 27.4.3.3 [string.cons] There is no way to supply an allocator for basic_string(str, pos) Yes 0 2584⁽ⁱ⁾ C++17 28.6.12 [re.grammar] <regex> ECMAScript IdentityEscape is ambiguous Yes 2 2585⁽ⁱ⁾ C++17 23.3.7.5 [forward.list.modifiers] forward_list::resize(size_type, const value_type&) effects incorrect Yes 0 2586⁽ⁱ⁾ C++17 20.6.4 [allocator.adaptor.members] Wrong value category used in scoped_allocator_adaptor::construct() Yes 0 2587⁽ⁱ⁾ C++17 21.3.10 [meta.logical] "Convertible to bool" requirement in conjunction and disjunction Yes 3 2588⁽ⁱ⁾ TS 3.3.3 [fund.ts.v2::meta.logical] [fund.ts.v2] "Convertible to bool" requirement in conjunction and disjunction Yes 3 2589⁽ⁱ⁾ C++17 28.6.9 [re.results] match_results can't satisfy the requirements of a container Yes 3 2590⁽ⁱ⁾ C++17 23.3.3.1 [array.overview] Aggregate initialization for std::array Yes 0 2591⁽ⁱ⁾ C++17 22.10.17.3.6 [func.wrap.func.targ] std::function's member template target() should not lead to undefined behaviour Yes 3 2592⁽ⁱ⁾ New 30.2 [time.syn] Require that chrono::duration_casts from smaller durations to larger durations do not overflow Yes 4 2593⁽ⁱ⁾ C++20 16.4.4.6 [allocator.requirements] Moved-from state of Allocators Yes 4 2594⁽ⁱ⁾ New 20.3.2.2 [util.smartptr.shared] Contradicting definition of empty shared_ptr on shared_ptr(nullptr, d) Yes 3 2595⁽ⁱ⁾ New 24.5.1.2 [reverse.iterator] reverse_iterator::operator[]'s return type revisited Yes 3 2596⁽ⁱ⁾ C++17 23.3.13.4 [vector.data] vector::data() should use addressof Yes 0 2597⁽ⁱ⁾ C++20 29.4.8 [complex.transcendentals] std::log misspecified for complex numbers Yes 3 2598⁽ⁱ⁾ C++17 20.2.11 [specialized.addressof] addressof works on temporaries Yes 3 2599⁽ⁱ⁾ New 22.2.6 [declval] Library incomplete type permission phrase is unclear No 3 2600⁽ⁱ⁾ NAD 31.5.2.6 [ios.base.storage] ios_base must store inaccessible iostate flags Yes 2601⁽ⁱ⁾ TS 1 [filesys.ts::fs.scope] [filesys.ts] [PDTS] Make namespaces consistent with Library TS policy Yes 2602⁽ⁱ⁾ TS 2.1 [filesys.ts::fs.conform.9945] [filesys.ts] [PDTS] Tighten specification when there is no reasonable behavior Yes 2603⁽ⁱ⁾ TS 4.7 [filesys.ts::fs.def.filename] [filesys.ts] [PDTS] Filename length needs bullet item Yes 2604⁽ⁱ⁾ NAD 4.14 [filesys.ts::fs.def.parent] [filesys.ts] [PDTS] Need definition of dot and dot-dot Yes 2605⁽ⁱ⁾ TS 8.1 [filesys.ts::path.generic] [filesys.ts] [PDTS] Parent of root directory unspecified Yes 2606⁽ⁱ⁾ TS 4.15 [filesys.ts::fs.def.path] [filesys.ts] [PDTS] Path depth is underspecified Yes 2607⁽ⁱ⁾ TS 6 [filesys.ts::fs.filesystem.synopsis] [filesys.ts] [PDTS] Unhelpful comment for struct space_info Yes 2608⁽ⁱ⁾ TS 6 [filesys.ts::fs.filesystem.synopsis] [filesys.ts] [PDTS] file_time_type underspecified Yes 2609⁽ⁱ⁾ TS 6 [filesys.ts::fs.filesystem.synopsis] [filesys.ts] [PDTS] Unclear why range-based-for functions return different types Yes 2610⁽ⁱ⁾ NAD 6 [filesys.ts::fs.filesystem.synopsis] [filesys.ts] [PDTS] Apparently inconsistent return types from several functions Yes 2611⁽ⁱ⁾ NAD Future 6 [filesys.ts::fs.filesystem.synopsis] [filesys.ts] [PDTS] Lack of relative() operation function Yes 2612⁽ⁱ⁾ NAD Future 6 [filesys.ts::fs.filesystem.synopsis] [filesys.ts] [PDTS] uintmax_t too small for large file sizes Yes 2613⁽ⁱ⁾ NAD 7 [filesys.ts::fs.err.report] [filesys.ts] [PDTS] Missing actual error conditions thrown Yes 2614⁽ⁱ⁾ TS 8.4.1 [filesys.ts::path.construct] [filesys.ts] [PDTS] Incorrect postconditions for path copy/move constructor Yes 2615⁽ⁱ⁾ TS 8.2.2 [filesys.ts::path.type.cvt] [filesys.ts] [PDTS] Missing behavior for characters with no representation Yes 2616⁽ⁱ⁾ TS 8.4.3 [filesys.ts::path.append] [filesys.ts] [PDTS] Append behavior underspecified if target is empty Yes 2617⁽ⁱ⁾ NAD 8.4.5 [filesys.ts::path.modifiers] [filesys.ts] [PDTS] path member swap() unnecessary Yes 2618⁽ⁱ⁾ TS 8.4.10 [filesys.ts::path.query] [filesys.ts] [PDTS] is_absolute() return clause confusing Yes 2619⁽ⁱ⁾ TS 8.6.1 [filesys.ts::path.io] [filesys.ts] [PDTS] Consider using quoted manipulators Yes 2621⁽ⁱ⁾ TS 12.3 [filesys.ts::directory_entry.obs] [filesys.ts] [PDTS] directory_entry operator== needs clarification Yes 2622⁽ⁱ⁾ TS 13.1 [filesys.ts::directory_iterator.members] [filesys.ts] [PDTS] directory_iterator underspecified Yes 2623⁽ⁱ⁾ NAD 15 [filesys.ts::fs.op.funcs] [filesys.ts] [PDTS] Request for create_regular_file() and/or touch() Yes 2624⁽ⁱ⁾ TS 15.3 [filesys.ts::fs.op.copy] [filesys.ts] [PDTS] Incorrect effects clause for path copy Yes 2625⁽ⁱ⁾ TS 15.4 [filesys.ts::fs.op.copy_file] [filesys.ts] [PDTS] Copying equivalent paths effects not specified Yes 2626⁽ⁱ⁾ NAD 15.13 [filesys.ts::fs.op.equivalent] [filesys.ts] [PDTS] Equivalence is a volatile property Yes 2627⁽ⁱ⁾ TS 15.14 [filesys.ts::fs.op.file_size] [filesys.ts] [PDTS] Return value of uintmax_t on error? Yes 2628⁽ⁱ⁾ NAD 15.25 [filesys.ts::fs.op.last_write_time] [filesys.ts] [PDTS] Possible last_write_time() postcondition? Yes 2629⁽ⁱ⁾ TS 15.27 [filesys.ts::fs.op.read_symlink] [filesys.ts] [PDTS] Unclear semantics of read_symlink on error Yes 2630⁽ⁱ⁾ NAD 15.28 [filesys.ts::fs.op.remove] [filesys.ts] [PDTS] remove() must avoid race Yes 2631⁽ⁱ⁾ NAD 15.30 [filesys.ts::fs.op.rename] [filesys.ts] [PDTS] POSIX guarantees atomicity for rename() Yes 2632⁽ⁱ⁾ TS 15.36 [filesys.ts::fs.op.system_complete] [filesys.ts] [PDTS] system_complete() example needs clarification Yes 2633⁽ⁱ⁾ TS 15 [filesys.ts::fs.op.funcs] [filesys.ts] [PDTS] unique_path() is a security vulnerability Yes 2634⁽ⁱ⁾ TS 6 [filesys.ts::fs.filesystem.synopsis] [filesys.ts] [PDTS] enum class directory_options has no summary Yes 2635⁽ⁱ⁾ TS 6 [filesys.ts::fs.filesystem.synopsis] [filesys.ts] [PDTS] directory_options::skip_permission_denied is not used Yes 2636⁽ⁱ⁾ TS 10.2 [filesys.ts::enum.copy_options] [filesys.ts] [PDTS] copy_options::copy_symlinks is not used Yes 2637⁽ⁱ⁾ TS 15.2 [filesys.ts::fs.op.canonical] [filesys.ts] [PDTS] All functions with error_code arguments should be noexcept Yes 2638⁽ⁱ⁾ NAD 12.3 [filesys.ts::directory_entry.obs] [filesys.ts] [PDTS] Make certain functions noexcept and drop error_code version Yes 2639⁽ⁱ⁾ NAD Editorial 6 [filesys.ts::fs.filesystem.synopsis] [filesys.ts] [PDTS] permissions() is missing from synopsis Yes 2640⁽ⁱ⁾ TS 12 [filesys.ts::class.directory_entry] [filesys.ts] [PDTS] class directory_entry should retain operator const path&() from V2 Yes 2641⁽ⁱ⁾ TS 13 [filesys.ts::class.directory_iterator] [filesys.ts] [PDTS] directory_iterator, recursive_directory_iterator, move construct/assign should be noexcept Yes 2642⁽ⁱ⁾ NAD 8 [filesys.ts::class.path] [filesys.ts] [PDTS] class path should have defaulted constructors/destructor/assignments. Yes 2643⁽ⁱ⁾ Dup 8 [filesys.ts::class.path] [filesys.ts] [PDTS] path::compare(const string&) should be path::compare(const string_type&) Yes 2644⁽ⁱ⁾ TS 10.2 [filesys.ts::enum.copy_options] [filesys.ts] [PDTS] enum classes copy_options and perms should be bitmask types Yes 2645⁽ⁱ⁾ TS 15.7 [filesys.ts::fs.op.create_directory] [filesys.ts] [PDTS] create_directory should refer to perms::all instead of Posix S_IRWXU|S_IRWXG|S_IRWXO Yes 2646⁽ⁱ⁾ NAD 8.4.7 [filesys.ts::path.generic.obs] [filesys.ts] [PDTS] Do we really need generic*? Yes 2647⁽ⁱ⁾ TS 15.25 [filesys.ts::fs.op.last_write_time] [filesys.ts] [PDTS] last_write_time() uses ill-formed cast Yes 2648⁽ⁱ⁾ TS 8.4.6 [filesys.ts::path.native.obs] [filesys.ts] [PDTS] path::template<class charT>string() conversion rules Yes 2649⁽ⁱ⁾ TS 8.4.1 [filesys.ts::path.construct] [filesys.ts] [PDTS] path and directory_entry move ctors should not be noexcept Yes 2650⁽ⁱ⁾ TS 8 [filesys.ts::class.path] [filesys.ts] [PDTS] path::compare(const string& s) wrong argument type Yes 2651⁽ⁱ⁾ Dup 13 [filesys.ts::class.directory_iterator] [filesys.ts] [PDTS] directory_iterator, recursive_directory_iterator, pointer/reference typedefs wrong Yes 2652⁽ⁱ⁾ TS 13 [filesys.ts::class.directory_iterator] [filesys.ts] [PDTS] Better to avoid deriving from std::iterator Yes 2653⁽ⁱ⁾ TS 12 [filesys.ts::class.directory_entry] [filesys.ts] [PDTS] directory_entry multithreading concerns Yes 2654⁽ⁱ⁾ NAD Future 1 [filesys.ts::fs.scope] [filesys.ts] [PDTS] Concerns with security and testability Yes 2655⁽ⁱ⁾ TS 7 [filesys.ts::fs.err.report] [filesys.ts] [PDTS] Clarify Error reporting Yes 2656⁽ⁱ⁾ TS 5 [filesys.ts::fs.req] [filesys.ts] [PDTS] Feature test macro for TS version Yes 2657⁽ⁱ⁾ TS 2.1 [filesys.ts::fs.conform.9945] [filesys.ts] [PDTS] Inappropriate use of "No diagnostic is required" Yes 2658⁽ⁱ⁾ TS 15.25 [filesys.ts::fs.op.last_write_time] [filesys.ts] [PDTS] POSIX utime() is obsolescent Yes 2659⁽ⁱ⁾ NAD Editorial 10 [filesys.ts::fs.enum] [filesys.ts] [PDTS] Invalid expressions for bitmask types Yes 2660⁽ⁱ⁾ TS 15.1 [filesys.ts::fs.op.absolute] [filesys.ts] [PDTS] Incorrect Throws specification for absolute() Yes 2661⁽ⁱ⁾ NAD 6 [filesys.ts::fs.filesystem.synopsis] [filesys.ts] Surprising equivalent() behavior if neither file exists Yes 2662⁽ⁱ⁾ TS 5 [filesys.ts::fs.req] [filesys.ts] Allocator requirements unspecified Yes 2663⁽ⁱ⁾ Resolved 31.12.13.15 [fs.op.file.size] Enable efficient retrieval of file size from directory_entry Yes 2 2664⁽ⁱ⁾ C++17 31.12.6.5.3 [fs.path.append] operator/ (and other append) semantics not useful if argument has root Yes 2 2665⁽ⁱ⁾ Resolved 31.12.6.5.5 [fs.path.modifiers] remove_filename() post condition is incorrect Yes 1 2666⁽ⁱ⁾ NAD Editorial 31.12 [filesystems] Bitmask operations should use bitmask terms Yes 3 2667⁽ⁱ⁾ C++17 31.12.6.5.9 [fs.path.decompose] path::root_directory() description is confusing Yes 0 2668⁽ⁱ⁾ NAD 31.12.6 [fs.class.path] path::operator+= is defined, but not operator+ Yes 3 2669⁽ⁱ⁾ C++17 31.12.12.2 [fs.rec.dir.itr.members] recursive_directory_iterator effects refers to non-existent functions Yes 0 2670⁽ⁱ⁾ C++17 99 [fs.op.system_complete] system_complete refers to undefined variable 'base' Yes 0 2671⁽ⁱ⁾ C++17 31.12.13.4 [fs.op.copy] Errors in Copy Yes 0 2672⁽ⁱ⁾ C++17 31.12.13.20 [fs.op.is.empty] Should is_empty use error_code in its specification? Yes 3 2673⁽ⁱ⁾ C++17 31.12.13.36 [fs.op.status] status() effects cannot be implemented as specified Yes 0 2674⁽ⁱ⁾ C++17 31.12.6.6 [fs.path.itr] Bidirectional iterator requirement on path::iterator is very expensive Yes 2 2675⁽ⁱ⁾ New 31.5.2.7 [ios.base.callback] register_callback can fail No 3 2676⁽ⁱ⁾ C++17 31.10 [file.streams] Provide filesystem::path overloads for File-based streams Yes 2 2677⁽ⁱ⁾ Resolved 31.12.10.4 [fs.dir.entry.obs] directory_entry::status is not allowed to be cached as a quality-of-implementation issue Yes 2 2678⁽ⁱ⁾ C++17 31.12.8.2 [fs.enum.file.type] std::filesystem enum classes overspecified Yes 3 2679⁽ⁱ⁾ C++17 16.3.2.4 [structure.specifications] Inconsistent Use of Effects and Equivalent To Yes 3 2680⁽ⁱ⁾ C++17 31.12 [filesystems] Add "Equivalent to" to filesystem Yes 2 2681⁽ⁱ⁾ C++17 31.12.13.4 [fs.op.copy] filesystem::copy() cannot copy symlinks Yes 2 2682⁽ⁱ⁾ C++20 31.12.13.4 [fs.op.copy] filesystem::copy() won't create a symlink to a directory Yes 2 2683⁽ⁱ⁾ C++17 31.12.13.4 [fs.op.copy] filesystem::copy() says "no effects" Yes 3 2684⁽ⁱ⁾ C++17 23.6.4 [priority.queue] priority_queue lacking comparator typedef Yes 0 2685⁽ⁱ⁾ C++17 20.3.2.2.2 [util.smartptr.shared.const] shared_ptr deleters must not not throw on move construction Yes 0 2686⁽ⁱ⁾ C++17 19.5.2 [system.error.syn] Why is std::hash specialized for error_code, but not error_condition? Yes 3 2687⁽ⁱ⁾ C++17 26.10.8 [exclusive.scan] {inclusive,exclusive}_scan misspecified Yes 1 2688⁽ⁱ⁾ C++17 26.8.10 [alg.clamp] clamp misses preconditions and has extraneous condition on result Yes 0 2689⁽ⁱ⁾ C++17 26.7.1 [alg.copy] Parallel versions of std::copy and std::move shouldn't be in order Yes 0 2690⁽ⁱ⁾ Resolved 22.10.5 [func.invoke] invoke<R> Yes 2691⁽ⁱ⁾ New 28.3.4.7.4 [locale.moneypunct] money_base::space and do_put: U+0020 versus fill Yes 3 2692⁽ⁱ⁾ NAD 16.3.3.3.3 [bitmask.types] Overspecification of lvalueness of bitmask elements Yes 3 2693⁽ⁱ⁾ Resolved 29.4 [complex.numbers] constexpr for various std::complex arithmetic and value operators Yes 3 2694⁽ⁱ⁾ C++17 28.3.3.1.2.2 [locale.facet] Application of LWG 436 accidentally deleted definition of "facet" Yes 3 2695⁽ⁱ⁾ New 16.4.6.5 [member.functions] "As if" unclear in [member.functions] No 3 2696⁽ⁱ⁾ C++17 20.3.2.2.7 [util.smartptr.shared.create] Interaction between make_shared and enable_shared_from_this is underspecified Yes 2 2697⁽ⁱ⁾ C++23 99 [concurr.ts::futures.unique_future] [concurr.ts] Behavior of future/shared_future unwrapping constructor when given an invalid future Yes 2 2698⁽ⁱ⁾ C++17 23.2.4 [sequence.reqmts] Effect of assign() on iterators/pointers/references Yes 0 2699⁽ⁱ⁾ C++17 29.2 [numeric.requirements] Missing restriction in [numeric.requirements] Yes 3 2700⁽ⁱ⁾ NAD 20.5 [mem.res] resource_adaptor went missing Yes 1 2701⁽ⁱ⁾ NAD Editorial 20.5.2.3 [mem.res.private] Unclear requirement in [memory.resource.private] Yes 3 2702⁽ⁱ⁾ New 28.3.4.3.3.3 [facet.num.put.virtuals] num_put::do_put(..., bool) performs ill-formed do_put call No 3 2703⁽ⁱ⁾ New 28.3.4.3.3.3 [facet.num.put.virtuals] No provision for fill-padding when boolalpha is set No 3 2704⁽ⁱ⁾ C++17 31.12.12.2 [fs.rec.dir.itr.members] recursive_directory_iterator's members should require '*this is dereferenceable' Yes 1 2705⁽ⁱ⁾ New 23.2.4 [sequence.reqmts] Questionable precondition on Sequence containers a.assign(n, t) Yes 3 2706⁽ⁱ⁾ C++17 31.12.12 [fs.class.rec.dir.itr] Error reporting for recursive_directory_iterator::pop() is under-specified Yes 0 2707⁽ⁱ⁾ C++17 31.12.6 [fs.class.path] path construction and assignment should have "string_type&&" overloads Yes 0 2708⁽ⁱ⁾ Open 31.12.12.2 [fs.rec.dir.itr.members] recursive_directory_iterator::recursion_pending() is incorrectly specified Yes 2 2709⁽ⁱ⁾ C++17 17.2 [support.types] offsetof is unnecessarily imprecise Yes 2 2710⁽ⁱ⁾ C++17 16.3.2.4 [structure.specifications] "Effects: Equivalent to ..." doesn't count "Synchronization:" as determined semantics Yes 0 2711⁽ⁱ⁾ C++17 31.12.6.5.1 [fs.path.construct] path is convertible from approximately everything under the sun Yes 1 2712⁽ⁱ⁾ C++17 31.12.13.5 [fs.op.copy.file] copy_file(from, to, ...) has a number of unspecified error conditions Yes 2 2713⁽ⁱ⁾ New 23.5 [unord] More missing allocator-extended constructors for unordered containers Yes 3 2714⁽ⁱ⁾ New 29.4.6 [complex.ops] complex stream extraction underspecified Yes 3 2715⁽ⁱ⁾ Resolved 32.5.8 [atomics.types.generic] What is 'aggregate initialization syntax'? Yes 3 2716⁽ⁱ⁾ C++17 26.7.12 [alg.random.sample] Specification of shuffle and sample disallows lvalue URNGs Yes 0 2717⁽ⁱ⁾ NAD 20.6.4 [allocator.adaptor.members] scoped_allocator_adaptor uses forward to do move's job Yes 2718⁽ⁱ⁾ C++17 26.3.3 [algorithms.parallel.exec] Parallelism bug in [algorithms.parallel.exec] p2 Yes 2719⁽ⁱ⁾ C++17 31.12.13.27 [fs.op.permissions] permissions function should not be noexcept due to narrow contract Yes 0 2720⁽ⁱ⁾ C++17 31.12.13.27 [fs.op.permissions] permissions function incorrectly specified for symlinks Yes 2 2721⁽ⁱ⁾ C++17 31.12.13.32 [fs.op.remove.all] remove_all has incorrect post conditions Yes 3 2722⁽ⁱ⁾ C++17 31.12.13.13 [fs.op.equivalent] equivalent incorrectly specifies throws clause Yes 3 2723⁽ⁱ⁾ C++17 31.12.11 [fs.class.directory.iterator] Do directory_iterator and recursive_directory_iterator become the end iterator upon error? Yes 0 2724⁽ⁱ⁾ C++17 20.5.2 [mem.res.class] The protected virtual member functions of memory_resource should be private Yes 4 2725⁽ⁱ⁾ C++17 31.12.13.14 [fs.op.exists] filesystem::exists(const path&, error_code&) error reporting Yes 1 2726⁽ⁱ⁾ C++17 31.12.11.2 [fs.dir.itr.members] [recursive_]directory_iterator::increment(error_code&) is underspecified Yes 0 2727⁽ⁱ⁾ C++17 26.1 [algorithms.general] Parallel algorithms with constexpr specifier Yes 0 2728⁽ⁱ⁾ C++17 31.12.13.36 [fs.op.status] status(p).permissions() and symlink_status(p).permissions() are not specified Yes 0 2729⁽ⁱ⁾ C++17 22.3.2 [pairs.pair] Missing SFINAE on std::pair::operator= Yes 2 2730⁽ⁱ⁾ Open 17.3.5 [numeric.limits] numeric_limits primary template definition No 3 2731⁽ⁱ⁾ C++23 32.6.5.2 [thread.lock.guard] Existence of lock_guard<MutexTypes...>::mutex_type typedef unclear Yes 3 2732⁽ⁱ⁾ C++17 31.12.6.5.3 [fs.path.append] Questionable specification of path::operator/= and path::append Yes 2 2733⁽ⁱ⁾ TS 13.1.2 [fund.ts.v2::numeric.ops.gcd] [fund.ts.v2] gcd / lcm and bool Yes 4 2734⁽ⁱ⁾ Resolved 31.12.6.5.4 [fs.path.concat] Questionable specification in [fs.path.concat] Yes 2 2735⁽ⁱ⁾ C++17 29.7 [c.math] std::abs(short), std::abs(signed char) and others should return int instead of double in order to be compatible with C++98 and C Yes 3 2736⁽ⁱ⁾ C++17 22.5.5 [optional.nullopt] nullopt_t insufficiently constrained Yes 2 2737⁽ⁱ⁾ New 17.6.3.2 [new.delete.single] Consider relaxing object size restrictions for single-object allocation functions No 3 2738⁽ⁱ⁾ C++17 21.3.6.4 [meta.unary.prop] is_constructible with void types Yes 2739⁽ⁱ⁾ C++17 30.6.6 [time.point.nonmember] Issue with time_point non-member subtraction with an unsigned duration Yes 0 2740⁽ⁱ⁾ C++17 22.5.3.7 [optional.observe] constexpr optional<T>::operator-> Yes 0 2741⁽ⁱ⁾ Resolved 26.8.5 [alg.partitions] is_partitioned requirements need updating Yes 3 2742⁽ⁱ⁾ C++17 27.4.3.3 [string.cons] Inconsistent string interface taking string_view Yes 1 2743⁽ⁱ⁾ C++23 23.2.5.1 [container.node.overview] p0083r3 node_handle private members missing "exposition only" comment Yes 3 2744⁽ⁱ⁾ C++17 22.7.4.2 [any.cons] any's in_place constructors Yes 0 2745⁽ⁱ⁾ TS 5.3 [fund.ts.v2::optional.object] [fund.ts.v2] Implementability of LWG 2451 Yes 0 2746⁽ⁱ⁾ New 22.5.3.4 [optional.assign] Inconsistency between requirements for emplace between optional and variant Yes 3 2747⁽ⁱ⁾ C++17 26.6.5 [alg.foreach] Possibly redundant std::move in [alg.foreach] Yes 0 2748⁽ⁱ⁾ C++17 22.5.3.5 [optional.swap] swappable traits for optionals Yes 0 2749⁽ⁱ⁾ C++17 22.6.3.7 [variant.swap] swappable traits for variants Yes 1 2750⁽ⁱ⁾ TS 5.3.1 [fund.ts.v2::optional.object.ctor] [fund.ts.v2] LWG 2451 conversion constructor constraint Yes 0 2751⁽ⁱ⁾ New 20.3.2.2.3 [util.smartptr.shared.dest] shared_ptr deleter not specified to observe expired weak_ptr instances No 4 2752⁽ⁱ⁾ C++17 32.10.9 [futures.async] "Throws:" clauses of async and packaged_task are unimplementable Yes 3 2753⁽ⁱ⁾ Resolved 22.5.3.2 [optional.ctor] Optional's constructors and assignments need constraints Yes 0 2754⁽ⁱ⁾ Resolved 22.7.4.2 [any.cons] The in_place constructors and emplace functions added by P0032R3 don't require CopyConstructible Yes 1 2755⁽ⁱ⁾ C++17 27.3.5 [string.view.io] §[string.view.io] uses non-existent basic_string_view::to_string function Yes 0 2756⁽ⁱ⁾ C++17 22.5.3 [optional.optional] C++ WP optional<T> should 'forward' T's implicit conversions Yes 1 2757⁽ⁱ⁾ Resolved 27.4.3.7.4 [string.insert] std::string{}.insert(3, "ABCDE", 0, 1) is ambiguous Yes 1 2758⁽ⁱ⁾ C++17 27.4.3.7.3 [string.assign] std::string{}.assign("ABCDE", 0, 1) is ambiguous Yes 1 2759⁽ⁱ⁾ C++17 26.10.14 [numeric.ops.gcd] gcd / lcm and bool for the WP Yes 2760⁽ⁱ⁾ C++17 27.4.3.2 [string.require] non-const basic_string::data should not invalidate iterators Yes 2761⁽ⁱ⁾ NAD 31.12.10.4 [fs.dir.entry.obs] directory_entry comparisons are members Yes 2 2762⁽ⁱ⁾ C++23 20.3.1.3.5 [unique.ptr.single.observers] unique_ptr operator*() should be noexcept Yes 3 2763⁽ⁱ⁾ Resolved 21.3.9.7 [meta.trans.other] common_type_t<void, void> is undefined Yes 2 2764⁽ⁱ⁾ Dup 17.4.1 [cstdint.syn] Are <cstddint> macros optional? Yes 3 2765⁽ⁱ⁾ C++17 31.5.2.2.6 [ios.init] Did LWG 1123 go too far? Yes 0 2766⁽ⁱ⁾ New 22.3.3 [pairs.spec] Swapping non-swappable types Yes 3 2767⁽ⁱ⁾ C++17 22.10.13 [func.not.fn] not_fn call_wrapper can form invalid types Yes 0 2768⁽ⁱ⁾ C++17 22.7.5 [any.nonmembers] any_cast and move semantics Yes 0 2769⁽ⁱ⁾ C++17 22.7.5 [any.nonmembers] Redundant const in the return type of any_cast(const any&) Yes 0 2770⁽ⁱ⁾ C++17 22.4.7 [tuple.helper] tuple_size<const T> specialization is not SFINAE compatible and breaks decomposition declarations Yes 1 2771⁽ⁱ⁾ C++17 27.4.3.8.4 [string.compare] Broken Effects of some basic_string::compare functions in terms of basic_string_view Yes 1 2772⁽ⁱ⁾ NAD 23.2.7 [associative.reqmts] Inconsistency in the insert(node) interface Yes 2 2773⁽ⁱ⁾ C++17 22.4.1 [tuple.general] Making std::ignore constexpr Yes 0 2774⁽ⁱ⁾ C++23 22.10.17.3.2 [func.wrap.func.con] std::function construction vs assignment Yes 3 2775⁽ⁱ⁾ Dup 24.5.1.6 [reverse.iter.elem] reverse_iterator is does not compile for fancy pointers Yes 1052 2776⁽ⁱ⁾ Resolved 20.3.2.2.6 [util.smartptr.shared.obs] shared_ptr unique() and use_count() Yes 2 2777⁽ⁱ⁾ C++17 27.3.3.8 [string.view.ops] basic_string_view::copy should use char_traits::copy Yes 0 2778⁽ⁱ⁾ C++17 27.3 [string.view] basic_string_view is missing constexpr Yes 0 2779⁽ⁱ⁾ C++23 16.2.1 [networking.ts::buffer.reqmts.mutablebuffersequence] [networking.ts] Relax requirements on buffer sequence iterators Yes 2780⁽ⁱ⁾ Resolved 27.3 [string.view] basic_string_view::copy is missing constexpr Yes 2 2781⁽ⁱ⁾ C++17 22.10.17.3.2 [func.wrap.func.con] Contradictory requirements for std::function and std::reference_wrapper Yes 0 2782⁽ⁱ⁾ C++17 20.6.3 [allocator.adaptor.cnstr] scoped_allocator_adaptor constructors must be constrained Yes 0 2783⁽ⁱ⁾ C++20 23.6.3.1 [queue.defn] stack::emplace() and queue::emplace() should return decltype(auto) Yes 2 2784⁽ⁱ⁾ C++17 17.9.8 [except.nested] Resolution to LWG 2484 is missing "otherwise, no effects" and is hard to parse Yes 0 2785⁽ⁱ⁾ C++17 31.7.9 [quoted.manip] quoted should work with basic_string_view Yes 0 2786⁽ⁱ⁾ C++17 C.4.9 [diff.cpp14.utilities] Annex C should mention shared_ptr changes for array support Yes 0 2787⁽ⁱ⁾ C++17 31.12.9 [fs.class.file.status] §[fs.file_status.cons] doesn't match class definition Yes 0 2788⁽ⁱ⁾ C++17 27.4.3.7.2 [string.append] basic_string range mutators unintentionally require a default constructible allocator Yes 2 2789⁽ⁱ⁾ C++17 22.7.4 [any.class] Equivalence of contained objects Yes 0 2790⁽ⁱ⁾ C++17 24.6.4 [istreambuf.iterator] Missing specification of istreambuf_iterator::operator-> Yes 3 2791⁽ⁱ⁾ Resolved 27.3.6 [string.view.hash] string_view objects and strings should yield the same hash values Yes 2792⁽ⁱ⁾ TS 13.1.2 [fund.ts.v2::numeric.ops.gcd] [fund.ts.v2] gcd and lcm should support a wider range of input values Yes 2793⁽ⁱ⁾ C++17 24.6.2.2 [istream.iterator.cons] Awkward conflation of trivial special members of istream_iterator Yes 2794⁽ⁱ⁾ C++17 23.2.2 [container.requirements.general] Missing requirements for allocator pointers Yes 0 2795⁽ⁱ⁾ C++17 16.4.6.4 [global.functions] §[global.functions] provides incorrect example of ADL use Yes 2796⁽ⁱ⁾ C++17 22.4.1 [tuple.general] tuple should be a literal type Yes 2 2797⁽ⁱ⁾ Resolved 21.3.3 [meta.type.synop] Trait precondition violations Yes 2 2798⁽ⁱ⁾ Resolved 31.12.6 [fs.class.path] Definition of path in terms of a string Yes 2 2799⁽ⁱ⁾ Resolved 32.10.8 [futures.shared.future] noexcept-specifications in shared_future Yes 2 2800⁽ⁱ⁾ Resolved 22.2.2 [utility.swap] constexpr swap Yes 3 2801⁽ⁱ⁾ C++17 20.3.1.3.2 [unique.ptr.single.ctor] Default-constructibility of unique_ptr Yes 2 2802⁽ⁱ⁾ C++17 20.3.2.2.2 [util.smartptr.shared.const] shared_ptr constructor requirements for a deleter Yes 2 2803⁽ⁱ⁾ Resolved 22.10.19 [unord.hash] hash for arithmetic, pointer and standard library types should not throw Yes 3 2804⁽ⁱ⁾ C++17 24.6.2.2 [istream.iterator.cons] Unconditional constexpr default constructor for istream_iterator Yes 0 2805⁽ⁱ⁾ Resolved 22.6 [variant] void and reference type alternatives in variant, variant<> and index() Yes 2806⁽ⁱ⁾ C++17 22.5.6 [optional.bad.access] Base class of bad_optional_access Yes 1 2807⁽ⁱ⁾ C++17 22.10.5 [func.invoke] std::invoke should use std::is_nothrow_callable Yes 3 2808⁽ⁱ⁾ Resolved 31.5.3.3 [fpos.operations] Requirements for fpos and stateT Yes 4 2809⁽ⁱ⁾ Resolved 22.6.12 [variant.hash] variant hash requirements Yes 2810⁽ⁱ⁾ Resolved 20.3.2.2 [util.smartptr.shared] use_count and unique in shared_ptr Yes 2811⁽ⁱ⁾ New 22.5.3.2 [optional.ctor] "Selected constructor" wording is incorrect for optional/variant/any Yes 3 2812⁽ⁱ⁾ C++17 24.7 [iterator.range] Range access is available with <string_view> Yes 0 2813⁽ⁱ⁾ Resolved 22.10.17.3.2 [func.wrap.func.con] std::function should not return dangling references Yes 2 2814⁽ⁱ⁾ Resolved 4.2.1 [fund.ts.v2::func.wrap.func.con] [fund.ts.v2] to_array should take rvalue reference as well Yes 3 2815⁽ⁱ⁾ New 17.5 [support.start.term] quick_exit can deadlock Yes 3 2816⁽ⁱ⁾ C++20 31.12.13.34 [fs.op.resize.file] resize_file has impossible postcondition Yes 3 2817⁽ⁱ⁾ Resolved 22.10.19 [unord.hash] std::hash for nullptr_t Yes 2818⁽ⁱ⁾ C++23 16.4.2.2 [contents] "::std::" everywhere rule needs tweaking Yes 2 2819⁽ⁱ⁾ New 32.2.5 [thread.req.lockable] Unspecified Return type: elements Yes 3 2820⁽ⁱ⁾ C++23 17.4.1 [cstdint.syn] Clarify <cstdint> macros Yes 3 2821⁽ⁱ⁾ Resolved 17.6.5 [ptr.launder] std::launder() should be marked as [[nodiscard]] Yes 3 2822⁽ⁱ⁾ NAD 27.4.3.3 [string.cons] Resolution for LWG 2742 introduces ambiguities Yes 2823⁽ⁱ⁾ Open 23.3.3.1 [array.overview] std::array initialization is still not permissive enough Yes 3 2824⁽ⁱ⁾ C++17 23.3.11.5 [list.ops] list::sort should say that the order of elements is unspecified if an exception is thrown Yes 0 2825⁽ⁱ⁾ Resolved 22.5.3 [optional.optional] LWG 2756 breaks class template argument deduction for optional Yes 2 2826⁽ⁱ⁾ C++17 27.3.3.4 [string.view.iterators] string_view iterators use old wording Yes 0 2827⁽ⁱ⁾ New 21.3.6.4 [meta.unary.prop] is_trivially_constructible and non-trivial destructors No 3 2828⁽ⁱ⁾ NAD Editorial 21.3.6.4 [meta.unary.prop] Clarify <cstdalign> (following adoption of P0063r3) Yes 2829⁽ⁱ⁾ Open 22.5.3.7 [optional.observe] LWG 2740 leaves behind vacuous words No 2 2830⁽ⁱ⁾ Resolved 23.2.7 [associative.reqmts] insert_return_type is only defined for containers with unique keys Yes 2831⁽ⁱ⁾ Resolved 23.2.8 [unord.req] Equality can be defined when Hash function objects have different behaviour Yes 2832⁽ⁱ⁾ Resolved 31.5.3.3 [fpos.operations] §[fpos.operations] strange requirement for P(i) Yes 3 2833⁽ⁱ⁾ Open 22.6.3.2 [variant.ctor] Library needs to specify what it means when it declares a function constexpr Yes 2 2834⁽ⁱ⁾ C++17 27.4.3.5 [string.capacity] Resolution LWG 2223 is missing wording about end iterators Yes 0 2835⁽ⁱ⁾ C++17 17.15 [support.c.headers] LWG 2536 seems to misspecify <tgmath.h> Yes 0 2836⁽ⁱ⁾ Resolved 27.4.3 [basic.string] More string operations should be noexcept Yes 2 2837⁽ⁱ⁾ C++17 26.10.14 [numeric.ops.gcd] gcd and lcm should support a wider range of input values Yes 0 2838⁽ⁱ⁾ C++17 D.13 [depr.meta.types] is_literal_type specification needs a little cleanup Yes 0 2839⁽ⁱ⁾ C++23 16.4.6.17 [lib.types.movedfrom] Self-move-assignment of library types, again Yes 2 2840⁽ⁱ⁾ Resolved 31.12.11.2 [fs.dir.itr.members] directory_iterator::increment is seemingly narrow-contract but marked noexcept Yes 2 2841⁽ⁱ⁾ Resolved 27 [strings] Use of "Equivalent to" in [strings] Yes 3 2842⁽ⁱ⁾ C++17 22.5.3.2 [optional.ctor] in_place_t check for optional::optional(U&&) should decay U Yes 0 2843⁽ⁱ⁾ C++20 20.5.2.3 [mem.res.private] Unclear behavior of std::pmr::memory_resource::do_allocate() Yes 3 2844⁽ⁱ⁾ Open 23.2.7 [associative.reqmts] Stability of a_uniq.insert(i, j) No 3 2845⁽ⁱ⁾ New 21.3.2 [meta.rqmts] enable_if, result_of, common_type and aligned_storage do not meet the definition of TransformationTrait No 3 2846⁽ⁱ⁾ New 29.4.10 [cmplx.over] Undefined phrase "effectively cast" Yes 3 2847⁽ⁱ⁾ New 29.7.1 [cmath.syn] sin(float) should call sinf(float) No 3 2848⁽ⁱ⁾ New 20.5.5.2 [mem.res.pool.options] Pass-through threshold for pool allocator No 3 2849⁽ⁱ⁾ C++20 31.12.13.5 [fs.op.copy.file] Why does !is_regular_file(from) cause copy_file to report a "file already exists" error? Yes 2 2850⁽ⁱ⁾ C++17 22.10.17.3.2 [func.wrap.func.con] std::function move constructor does unnecessary work Yes 0 2851⁽ⁱ⁾ C++20 31.12.8.2 [fs.enum.file.type] std::filesystem enum classes are now underspecified Yes 2 2852⁽ⁱ⁾ NAD 27.4.4.2 [string.cmp] Specifications of operator== for std::basic_strings and std::basic_string_views are difficult to conform to Yes 2 2853⁽ⁱ⁾ C++17 23.3.13.5 [vector.modifiers] Possible inconsistency in specification of erase in [vector.modifiers] Yes 0 2854⁽ⁱ⁾ NAD 99 [depr.conversions.string] wstring_convert provides no indication of incomplete input or output Yes 3 2855⁽ⁱ⁾ C++17 17.9.8 [except.nested] std::throw_with_nested("string_literal") Yes 0 2856⁽ⁱ⁾ Resolved 32.10.9 [futures.async] std::async should be marked as [[nodiscard]] Yes 2 2857⁽ⁱ⁾ C++17 22.5 [optional] {variant,optional,any}::emplace should return the constructed value Yes 1 2858⁽ⁱ⁾ New 24.5.1 [reverse.iterators] LWG 2472: actually an incompatibility with C++03 Yes 4 2859⁽ⁱ⁾ C++20 17.6.5 [ptr.launder] Definition of reachable in [ptr.launder] misses pointer arithmetic from pointer-interconvertible object Yes 2 2860⁽ⁱ⁾ NAD 17.6.5 [ptr.launder] launder and base class subobjects Yes 2 2861⁽ⁱ⁾ C++17 27.4.3.2 [string.require] basic_string should require that charT match traits::char_type Yes 2862⁽ⁱ⁾ Resolved 22.5 [optional] LWG 2756 should be accepted Yes 2863⁽ⁱ⁾ Resolved 99 [func.default.traits] Undo default_order changes of maps and sets Yes 2864⁽ⁱ⁾ Resolved 20.3.2.2 [util.smartptr.shared] Merge shared_ptr changes from Library Fundamentals to C++17 Yes 2865⁽ⁱ⁾ NAD 16 [library] Resolve all open Library issues for C++17 Yes 2866⁽ⁱ⁾ C++17 16.4.6.13 [derivation] Incorrect derived classes constraints Yes 2867⁽ⁱ⁾ Resolved 16.4.6.14 [res.on.exception.handling] Bad footnote about explicit exception-specification Yes 2868⁽ⁱ⁾ C++17 22.7.3 [any.bad.any.cast] Missing specification of bad_any_cast::what() Yes 2869⁽ⁱ⁾ Resolved 99 [depr.locale.stdcvt] Deprecate sub-clause [locale.stdcvt] Yes 2870⁽ⁱ⁾ C++20 29.4.7 [complex.value.ops] Default value of parameter theta of polar should be dependent Yes 2871⁽ⁱ⁾ NAD 21.3.3 [meta.type.synop] User specializations of type traits should be ill-formed Yes 2872⁽ⁱ⁾ C++17 3 [intro.defs] Add definition for direct-non-list-initialization Yes 2873⁽ⁱ⁾ C++17 20.3.2.2 [util.smartptr.shared] Add noexcept to several shared_ptr related functions Yes 2874⁽ⁱ⁾ C++17 20.3.2.2.2 [util.smartptr.shared.const] Constructor shared_ptr::shared_ptr(Y*) should be constrained Yes 2875⁽ⁱ⁾ C++17 20.3.2.2.2 [util.smartptr.shared.const] shared_ptr::shared_ptr(Y*, D, […]) constructors should be constrained Yes 2876⁽ⁱ⁾ C++17 20.3.2.2.2 [util.smartptr.shared.const] shared_ptr::shared_ptr(const weak_ptr<Y>&) constructor should be constrained Yes 2877⁽ⁱ⁾ Resolved 20.3.2.2.10 [util.smartptr.shared.cast] Strengthen meaning of "empty shared_ptr<T>" in dynamic_pointer_cast Yes 2878⁽ⁱ⁾ C++17 24.6.2.2 [istream.iterator.cons] Missing DefaultConstructible requirement for istream_iterator default constructor Yes 2879⁽ⁱ⁾ Resolved 17.14.4 [csignal.syn] Removing C dependencies from signal handler wording Yes 2880⁽ⁱ⁾ Resolved 26.3.3 [algorithms.parallel.exec] Relax complexity specifications for non-sequenced policies Yes 2881⁽ⁱ⁾ New 22.6.3 [variant.variant] Adopt section III of P0308R0 No 3 2882⁽ⁱ⁾ Resolved 22.6.3.2 [variant.ctor] Clarify variant construction Yes 2883⁽ⁱ⁾ LEWG 27.3 [string.view] The standard library should provide string_view parameters instead or in addition for functions defined with char const * or string const & as parameter types. No 2884⁽ⁱ⁾ LEWG 23 [containers] Relational operators for containers should sfinae; if the underlying type is not comparable, neither should the container be No 2885⁽ⁱ⁾ LEWG 23 [containers] The relational operators of optional and variant completely reflect the semantics of the element types — this is inconsistent with other types in the library No 2886⁽ⁱ⁾ NAD 22.7.4.5 [any.observers] Keep the empty() functions in any Yes 2887⁽ⁱ⁾ Resolved 32.6.5.2 [thread.lock.guard] Revert the changes from P0156R0: variadic lock_guard Yes 2888⁽ⁱ⁾ Resolved 22 [utilities] Variables of library tag types need to be inline variables Yes 2889⁽ⁱ⁾ Resolved 22 [utilities] Mark constexpr global variables as inline Yes 2890⁽ⁱ⁾ C++17 99 [defns.obj.state] The definition of 'object state' applies only to class types Yes 2891⁽ⁱ⁾ NAD 16.4.6 [conforming] Relax library requirements on volatile types Yes 2892⁽ⁱ⁾ NAD 16.4.6.7 [constexpr.functions] Relax the prohibition on libraries adding constexpr Yes 1 2893⁽ⁱ⁾ NAD 22 [utilities] Parsing Hexadecimally in P0067R4 Yes 2894⁽ⁱ⁾ Resolved 22.10.5 [func.invoke] The function template std::apply() is required to be constexpr, but std::invoke() isn't Yes 3 2895⁽ⁱ⁾ Resolved 21.3.8 [meta.rel] Passing function types to result_of and is_callable Yes 2896⁽ⁱ⁾ Dup 99 [depr.locale.stdcvt] The contents of <codecvt> are underspecified Yes 2897⁽ⁱ⁾ Resolved 23.3.3.1 [array.overview] array::iterator and array::const_iterator should be literal types Yes 2 2898⁽ⁱ⁾ NAD 16 [library] Prefer not to use member typedefs as constructor parameters Yes 2899⁽ⁱ⁾ C++20 22.4 [tuple] is_(nothrow_)move_constructible and tuple, optional and unique_ptr Yes 2 2900⁽ⁱ⁾ C++17 22.5.3 [optional.optional] The copy and move constructors of optional are not constexpr Yes 2901⁽ⁱ⁾ C++17 22.6.3 [variant.variant] Variants cannot properly support allocators Yes 0 2902⁽ⁱ⁾ NAD 22.6.3 [variant.variant] variant should only support complete types Yes 0 2903⁽ⁱ⁾ C++17 22.6.3.2 [variant.ctor] The form of initialization for the emplace-constructors is not specified Yes 2904⁽ⁱ⁾ C++17 22.6.3.4 [variant.assign] Make variant move-assignment more exception safe Yes 2905⁽ⁱ⁾ C++17 20.3.1.3.2 [unique.ptr.single.ctor] is_constructible_v<unique_ptr<P, D>, P, D const &> should be false when D is not copy constructible Yes 2906⁽ⁱ⁾ New 20.3.2.2.2 [util.smartptr.shared.const] There is no ability to supply an allocator for the control block when constructing a shared_ptr from a unique_ptr No 3 2907⁽ⁱ⁾ NAD 20.3.2.2.3 [util.smartptr.shared.dest] Semantics for destroying the deleter and the control-block of a shared_ptr are unclear Yes 2908⁽ⁱ⁾ C++17 20.3.2.2.8 [util.smartptr.shared.cmp] The less-than operator for shared pointers could do more Yes 2909⁽ⁱ⁾ NAD 26.3.6.2 [execpol.type] User specializations of is_execution_policy should be ill-formed Yes 2910⁽ⁱ⁾ Dup 21.3.3 [meta.type.synop] Template deduction and integral_constant Yes 2911⁽ⁱ⁾ C++17 21.3.6.4 [meta.unary.prop] An is_aggregate type trait is needed Yes 2912⁽ⁱ⁾ Resolved 30.5 [time.duration] Add a deduction guide for class template duration Yes 2913⁽ⁱ⁾ Resolved 23 [containers] Containers need deduction guides Yes 2914⁽ⁱ⁾ Resolved 23.3.2 [array.syn] std::array does not support class-template deduction from initializers Yes 2915⁽ⁱ⁾ Resolved 23.6 [container.adaptors] The three container adapters should each have a deduction guide Yes 2916⁽ⁱ⁾ NAD 24.5.2 [insert.iterators] Insert iterators should each have an instantiation guide to initialize from a container Yes 2917⁽ⁱ⁾ Resolved 26 [algorithms] Parallel algorithms cannot easily work with InputIterators Yes 2918⁽ⁱ⁾ Resolved 26.10.5 [inner.product] Possible need for extra storage in inner_product Yes 2919⁽ⁱ⁾ Resolved 26.10.12 [adjacent.difference] The specification for adjacent_difference has baked-in sequential semantics Yes 2920⁽ⁱ⁾ Resolved 32.10.8 [futures.shared.future] Add a deduction guide for creating a shared_future from a future rvalue Yes 2921⁽ⁱ⁾ C++17 32.10.10 [futures.task] packaged_task and type-erased allocators Yes 2922⁽ⁱ⁾ LEWG 21.3.3 [meta.type.synop] The *_constant<> templates do not make use of template<auto> No 2923⁽ⁱ⁾ New 29.7.1 [cmath.syn] noexcept is inconsistently applied across headers which import components of the C standard library No 4 2924⁽ⁱ⁾ Resolved 26.10 [numeric.ops] An ExecutionPolicy overload for inner_product() seems impractical Yes 2925⁽ⁱ⁾ Resolved 16 [library] Template argument deduction is not used in the standard library Yes 2926⁽ⁱ⁾ Resolved 22.10.4 [func.require] INVOKE(f, t1, t2,... tN) and INVOKE(f, t1, t2,... tN, R) are too similar Yes 2927⁽ⁱ⁾ Resolved 21.3.3 [meta.type.synop] Encoding a functor and argument types as a function signature for is_callable and result_of is fragile Yes 2928⁽ⁱ⁾ Resolved 21.3.3 [meta.type.synop] is_callable is not a good name Yes 2929⁽ⁱ⁾ Resolved 27.4.3.7.3 [string.assign] basic_string misuses "Effects: Equivalent to" Yes 3 2930⁽ⁱ⁾ NAD 16.4.6.4 [global.functions] Are implementations allowed to split non-member functions into several overloads? Yes 2931⁽ⁱ⁾ Open 24.4.3 [iterator.operations] Missed optimization opportunity with single-argument std::next No 3 2932⁽ⁱ⁾ C++20 26.3.3 [algorithms.parallel.exec] Constraints on parallel algorithm implementations are underspecified Yes 2933⁽ⁱ⁾ Resolved 22.4.5 [tuple.creation] PR for LWG 2773 could be clearer Yes 3 2934⁽ⁱ⁾ C++17 22.5.9 [optional.comp.with.t] optional<const T> doesn't compare with T Yes 2935⁽ⁱ⁾ C++20 31.12.13.7 [fs.op.create.directories] What should create_directories do when p already exists but is not a directory? Yes 0 2936⁽ⁱ⁾ C++20 31.12.6.5.8 [fs.path.compare] Path comparison is defined in terms of the generic format Yes 2 2937⁽ⁱ⁾ C++20 31.12.13.13 [fs.op.equivalent] Is equivalent("existing_thing", "not_existing_thing") an error? Yes 0 2938⁽ⁱ⁾ Resolved 27.3.3 [string.view.template] basic_string_view::const_iterator should be literal types Yes 2 2939⁽ⁱ⁾ Open 21.3.3 [meta.type.synop] Some type-completeness constraints of traits are overspecified Yes 2 2940⁽ⁱ⁾ C++20 D.13 [depr.meta.types] result_of specification also needs a little cleanup Yes 3 2941⁽ⁱ⁾ C++20 32.2.4 [thread.req.timing] §[thread.req.timing] wording should apply to both member and namespace-level functions Yes 0 2942⁽ⁱ⁾ C++20 20.3.2.3.6 [util.smartptr.weak.obs] LWG 2873's resolution missed weak_ptr::owner_before Yes 2943⁽ⁱ⁾ C++20 31.10.3.4 [filebuf.members] Problematic specification of the wide version of basic_filebuf::open Yes 2 2944⁽ⁱ⁾ C++20 20.3.1.3.2 [unique.ptr.single.ctor] LWG 2905 accidentally removed requirement that construction of the deleter doesn't throw an exception Yes 0 2945⁽ⁱ⁾ C++20 22.5.9 [optional.comp.with.t] Order of template parameters in optional comparisons Yes 2 2946⁽ⁱ⁾ C++20 27.4.3.3 [string.cons] LWG 2758's resolution missed further corrections Yes 2 2947⁽ⁱ⁾ New 31.12.8.1 [fs.enum.path.format] Clarify several filesystem terms No 3 2948⁽ⁱ⁾ C++20 20.3.1 [unique.ptr] unique_ptr does not define operator<< for stream output Yes 0 2949⁽ⁱ⁾ New 16 [library] Unclear complexity requirements: space vs. time No 4 2950⁽ⁱ⁾ C++20 17.2.5 [support.types.byteops] std::byte operations are misspecified Yes 1 2951⁽ⁱ⁾ Resolved 24.3.2.3 [iterator.traits] iterator_traits should SFINAE for void* and function pointers Yes 3 2952⁽ⁱ⁾ C++20 24.3.2.3 [iterator.traits] iterator_traits should work for pointers to cv T Yes 0 2953⁽ⁱ⁾ C++20 23.3.5.4 [deque.modifiers] LWG 2853 should apply to deque::erase too Yes 0 2954⁽ⁱ⁾ C++20 16.4.5 [constraints] Specialization of the convenience variable templates should be prohibited Yes 2955⁽ⁱ⁾ Resolved 22.2 [utility] to_chars / from_chars depend on std::string Yes 2956⁽ⁱ⁾ C++17 31.12.13.3 [fs.op.canonical] filesystem::canonical() still defined in terms of absolute(p, base) Yes 1 2957⁽ⁱ⁾ Resolved 22.10.15.4 [func.bind.bind] bind's specification doesn't apply the cv-qualification of the call wrapper to the callable object Yes 3 2958⁽ⁱ⁾ C++20 22.3.2 [pairs.pair] Moves improperly defined as deleted Yes 2 2959⁽ⁱ⁾ New 27.2.4.4 [char.traits.specializations.char16.t] char_traits<char16_t>::eof is a valid UTF-16 code unit No 3 2960⁽ⁱ⁾ C++23 6.3 [fund.ts.v3::meta] [fund.ts.v3] nonesuch is insufficiently useless Yes 2 2961⁽ⁱ⁾ C++20 20.5.4 [mem.res.global] Bad postcondition for set_default_resource Yes 2962⁽ⁱ⁾ Open 24.3.5.3 [input.iterators] Iterators of Containers of move-only types do not model InputIterator Yes 2 2963⁽ⁱ⁾ New 26 [algorithms] Algorithms with underspecified iterator requirements No 3 2964⁽ⁱ⁾ C++20 20.3.2.2.10 [util.smartptr.shared.cast] Apparently redundant requirement for dynamic_pointer_cast Yes 0 2965⁽ⁱ⁾ C++20 31.12.7.2 [fs.filesystem.error.members] Non-existing path::native_string() in filesystem_error::what() specification Yes 0 2966⁽ⁱ⁾ C++20 31.12.6.5.6 [fs.path.native.obs] Incomplete resolution of US 74 Yes 2967⁽ⁱ⁾ NAD 26.6.13 [alg.equal] std::equal on empty ranges Yes 2968⁽ⁱ⁾ Resolved 27.4.3.5 [string.capacity] Inconsistencies between basic_string reserve and vector/unordered_map/unordered_set reserve functions Yes 3 2969⁽ⁱ⁾ C++20 20.5.3.3 [mem.poly.allocator.mem] polymorphic_allocator::construct() shouldn't pass resource() Yes 2 2970⁽ⁱ⁾ C++20 22.6.7 [variant.visit] Return type of std::visit misspecified Yes 2 2971⁽ⁱ⁾ NAD 22.6.3 [variant.variant] variant should require Destructible types Yes 2972⁽ⁱ⁾ C++20 21.3.6.4 [meta.unary.prop] What is is_trivially_destructible_v<int>? Yes 2973⁽ⁱ⁾ LEWG 26.8.6 [alg.merge] inplace_merge exact comparison count complexity prohibits useful real-world optimizations Yes 2974⁽ⁱ⁾ C++20 22.3.4 [pair.astuple] Diagnose out of bounds tuple_element/variant_alternative Yes 2975⁽ⁱ⁾ C++20 20.5.3.3 [mem.poly.allocator.mem] Missing case for pair construction in scoped and polymorphic allocators Yes 3 2976⁽ⁱ⁾ C++20 32.10.10 [futures.task] Dangling uses_allocator specialization for packaged_task Yes 3 2977⁽ⁱ⁾ C++20 23.2.8 [unord.req] unordered_meow::merge() has incorrect Throws: clause Yes 0 2978⁽ⁱ⁾ C++20 27.4.6 [basic.string.hash] Hash support for pmr::string and friends Yes 0 2979⁽ⁱ⁾ C++20 21.3.9.7 [meta.trans.other] aligned_union should require complete object types Yes 0 2980⁽ⁱ⁾ C++20 99 [depr.util.smartptr.shared.atomic] Cannot compare_exchange empty pointers Yes 2981⁽ⁱ⁾ C++20 22.10.6 [refwrap] Remove redundant deduction guides from standard library Yes 0 2982⁽ⁱ⁾ C++20 23.5.6.1 [unord.set.overview] Making size_type consistent in associative container deduction guides Yes 2 2983⁽ⁱ⁾ New 28.3.4.7.3.3 [locale.money.put.virtuals] money_put::do_put underspecified Yes 3 2984⁽ⁱ⁾ New 31.7.8 [ext.manip] put_money(99) is unnecessarily undefined Yes 3 2985⁽ⁱ⁾ LEWG 26.7.10 [alg.reverse] std::reverse should be permitted to be vectorized Yes 2986⁽ⁱ⁾ New 28.6.12 [re.grammar] Handling of multi-character collating elements by the regex FSM is underspecified No 4 2987⁽ⁱ⁾ New 28.6.12 [re.grammar] Relationship between traits_inst.lookup_collatename and the regex FSM is underspecified with regards to ClassAtomCollatingElement No 3 2988⁽ⁱ⁾ C++20 32.5.2 [atomics.syn] Clause 32 cleanup missed one typename Yes 0 2989⁽ⁱ⁾ C++20 31.12.6.7 [fs.path.io] path's stream insertion operator lets you insert everything under the sun Yes 2 2990⁽ⁱ⁾ Open 22.5.3 [optional.optional] optional::value_type is not always a value type Yes 3 2991⁽ⁱ⁾ Open 22.6.3.2 [variant.ctor] variant copy constructor missing noexcept(see below) Yes 2992⁽ⁱ⁾ NAD 19.5.3.5 [syserr.errcat.objects] system_category() and error_code::error_code() should be constexpr Yes 2993⁽ⁱ⁾ C++20 22.10.6 [refwrap] reference_wrapper<T> conversion from T&& Yes 3 2994⁽ⁱ⁾ WP 27.2 [char.traits] Needless UB for basic_string and basic_string_view Yes 3 2995⁽ⁱ⁾ C++20 31.8.2.2 [stringbuf.cons] basic_stringbuf default constructor forbids it from using SSO capacity Yes 3 2996⁽ⁱ⁾ C++20 20.3.2.2 [util.smartptr.shared] Missing rvalue overloads for shared_ptr operations Yes 2997⁽ⁱ⁾ C++23 23.3.11.5 [list.ops] LWG 491 and the specification of {forward_,}list::unique Yes 3 2998⁽ⁱ⁾ C++20 23.3.11.5 [list.ops] Requirements on function objects passed to {forward_,}list-specific algorithms Yes 0 2999⁽ⁱ⁾ Resolved 16.3.3.2 [expos.only.entity] §[thread.decaycopy] issue Yes 3 3000⁽ⁱ⁾ C++20 20.5.6.3 [mem.res.monotonic.buffer.mem] monotonic_memory_resource::do_is_equal uses dynamic_cast unnecessarily Yes 0 3001⁽ⁱ⁾ C++20 20.3.2.3 [util.smartptr.weak] weak_ptr::element_type needs remove_extent_t Yes 0 3002⁽ⁱ⁾ C++23 18.9.4 [networking.ts::socket.acceptor.ops] [networking.ts] basic_socket_acceptor::is_open() isn't noexcept Yes 0 3003⁽ⁱ⁾ Resolved 32.10.6 [futures.promise] <future> still has type-erased allocators in promise Yes 2 3004⁽ⁱ⁾ C++20 27.4.3.5 [string.capacity] §[string.capacity] and §[vector.capacity] should specify time complexity for capacity() Yes 0 3005⁽ⁱ⁾ C++20 20.3.2.2.7 [util.smartptr.shared.create] Destruction order of arrays by make_shared/allocate_shared only recommended? Yes 0 3006⁽ⁱ⁾ Resolved 31.8.2.2 [stringbuf.cons] Constructing a basic_stringbuf from a string — where does the allocator come from? Yes 3 3007⁽ⁱ⁾ C++20 20.3.2.2.7 [util.smartptr.shared.create] allocate_shared should rebind allocator to cv-unqualified value_type for construction Yes 0 3008⁽ⁱ⁾ C++20 20.3.2.2.7 [util.smartptr.shared.create] make_shared (sub)object destruction semantics are not specified Yes 2 3009⁽ⁱ⁾ C++20 24.7 [iterator.range] Including <string_view> doesn't provide std::size/empty/data Yes 0 3010⁽ⁱ⁾ C++23 13.11.1 [networking.ts::async.uses.executor.trait] [networking.ts] uses_executor says "if a type T::executor_type exists" Yes 0 3011⁽ⁱ⁾ Open 19.3 [assertions] Requirements for assert(E) inconsistent with C No 2 3012⁽ⁱ⁾ C++20 32.5.8 [atomics.types.generic] atomic<T> is unimplementable for non-is_trivially_copy_constructible T Yes 2 3013⁽ⁱ⁾ C++20 31.12.11.2 [fs.dir.itr.members] (recursive_)directory_iterator construction and traversal should not be noexcept Yes 0 3014⁽ⁱ⁾ C++20 31.12.13.5 [fs.op.copy.file] More noexcept issues with filesystem operations Yes 3015⁽ⁱ⁾ C++20 31.12.13.4 [fs.op.copy] copy_options::unspecified underspecified Yes 3 3016⁽ⁱ⁾ NAD 22.5.3 [optional.optional] optional and over-aligned types Yes 3 3017⁽ⁱ⁾ C++20 23.3.7.6 [forward.list.ops] list splice functions should use addressof Yes 0 3018⁽ⁱ⁾ C++20 20.3.2.2 [util.smartptr.shared] shared_ptr of function type Yes 3 3019⁽ⁱ⁾ New 19.5.3.4 [syserr.errcat.derived] Presentation of "program defined classes derived from error_category" [syserr.errcat.derived] unclear and contains mistakes No 3 3020⁽ⁱ⁾ C++23 16.2 [networking.ts::buffer.reqmts] [networking.ts] Remove spurious nested value_type buffer sequence requirement Yes 0 3021⁽ⁱ⁾ New 16.2.2 [networking.ts::buffer.reqmts.constbuffersequence] [networking.ts] Relax pointer equivalence requirement for ConstBufferSequence Yes 3 3022⁽ⁱ⁾ Resolved 21.3.8 [meta.rel] is_convertible<derived*, base*> may lead to ODR Yes 2 3023⁽ⁱ⁾ Resolved 22.10.16 [func.memfn] Clarify unspecified call wrappers Yes 3 3024⁽ⁱ⁾ C++20 22.6.3.2 [variant.ctor] variant's copies must be deleted instead of disabled via SFINAE Yes 3025⁽ⁱ⁾ C++20 23.4.3.1 [map.overview] Map-like container deduction guides should use pair<Key, T>, not pair<const Key, T> Yes 2 3026⁽ⁱ⁾ C++20 31.12.13.40 [fs.op.weakly.canonical] filesystem::weakly_canonical still defined in terms of canonical(p, base) Yes 0 3027⁽ⁱ⁾ New 16.2.4 [networking.ts::buffer.reqmts.dynamicbuffer] [networking.ts] DynamicBuffer prepare exception specification Yes 3 3028⁽ⁱ⁾ C++23 23.2.2 [container.requirements.general] Container requirements tables should distinguish const and non-const variables Yes 3 3029⁽ⁱ⁾ Open 26.8.8.3 [pop.heap] pop_heap over-constrains input Yes 3 3030⁽ⁱ⁾ C++20 32.6.6 [thread.lock.algorithm] Who shall meet the requirements of try_lock? Yes 0 3031⁽ⁱ⁾ C++20 26.8 [alg.sorting] Algorithms and predicates with non-const reference arguments Yes 2 3032⁽ⁱ⁾ C++23 26.8.8 [alg.heap.operations] ValueSwappable requirement missing for push_heap and make_heap Yes 3 3033⁽ⁱ⁾ NAD Editorial 27.4.3.3 [string.cons] basic_string move ctor is underspecified Yes 3034⁽ⁱ⁾ C++20 21.3.9.7 [meta.trans.other] P0767R1 breaks previously-standard-layout types Yes 0 3035⁽ⁱ⁾ C++20 20.2.10 [default.allocator] std::allocator's constructors should be constexpr Yes 0 3036⁽ⁱ⁾ C++23 20.5.3 [mem.poly.allocator.class] polymorphic_allocator::destroy is extraneous Yes 3 3037⁽ⁱ⁾ C++20 20.5.3 [mem.poly.allocator.class] polymorphic_allocator and incomplete types Yes 2 3038⁽ⁱ⁾ C++20 20.5.3.3 [mem.poly.allocator.mem] polymorphic_allocator::allocate should not allow integer overflow to create vulnerabilities Yes 2 3039⁽ⁱ⁾ C++20 32.4.3.3 [thread.thread.constr] Unnecessary decay in thread and packaged_task Yes 0 3040⁽ⁱ⁾ C++20 27.3.3.8 [string.view.ops] basic_string_view::starts_with Effects are incorrect Yes 0 3041⁽ⁱ⁾ C++20 22.10.6.2 [refwrap.const] Unnecessary decay in reference_wrapper Yes 0 3042⁽ⁱ⁾ C++20 D.13 [depr.meta.types] is_literal_type_v should be inline Yes 0 3043⁽ⁱ⁾ C++20 31.12.7.2 [fs.filesystem.error.members] Bogus postcondition for filesystem_error constructor Yes 0 3044⁽ⁱ⁾ New 16.4.4.6 [allocator.requirements] Strange specification of max_size() for an allocator Yes 3 3045⁽ⁱ⁾ C++20 32.5.8.4 [atomics.types.float] atomic<floating-point> doesn't have value_type or difference_type Yes 0 3046⁽ⁱ⁾ New 22.10.6 [refwrap] Do not require reference_wrapper to support non-referenceable function types Yes 3 3047⁽ⁱ⁾ New 32.5.8.3 [atomics.types.int] atomic compound assignment operators can cause undefined behavior when corresponding fetch_meow members don't Yes 3 3048⁽ⁱ⁾ C++20 26.10.6 [transform.reduce] transform_reduce(exec, first1, last1, first2, init) discards execution policy Yes 0 3049⁽ⁱ⁾ Open 26.2 [algorithms.requirements] Missing wording allowing algorithms to use copies of function objects as substitutes for their parameters Yes 3 3050⁽ⁱ⁾ C++20 30.5.2 [time.duration.cons] Conversion specification problem in chrono::duration constructor Yes 3 3051⁽ⁱ⁾ C++20 29.7.1 [cmath.syn] Floating point classifications were inadvertently changed in P0175 Yes 0 3052⁽ⁱ⁾ Resolved 22.6.7 [variant.visit] visit is underconstrained Yes 2 3053⁽ⁱ⁾ New 19.5.4.1 [syserr.errcode.overview] Prohibit error_code construction from rvalues of error_category Yes 3 3054⁽ⁱ⁾ C++20 26.11.5 [uninitialized.copy] uninitialized_copy appears to not be able to meet its exception-safety guarantee Yes 2 3055⁽ⁱ⁾ C++20 31.12.6.5.4 [fs.path.concat] path::operator+=(single-character) misspecified Yes 3 3056⁽ⁱ⁾ New 31.12.13.5 [fs.op.copy.file] copy_file() copies which attributes? Yes 3 3057⁽ⁱ⁾ Open 31.12.13.4 [fs.op.copy] Correct copy_options handling Yes 2 3058⁽ⁱ⁾ C++20 26.10.12 [adjacent.difference] Parallel adjacent_difference shouldn't require creating temporaries Yes 3 3059⁽ⁱ⁾ New 23.2 [container.requirements] Wrong requirements for map-like associative container assignment? No 3 3060⁽ⁱ⁾ New 26.10.8 [exclusive.scan] XXX_scan algorithms are specified to work with move-only T, but are specified to make N copies of T into the destination range No 2 3061⁽ⁱ⁾ Resolved 26.8.12 [alg.three.way] What is the return type of compare_3way? Yes 2 3062⁽ⁱ⁾ C++20 26.3.5 [algorithms.parallel.overloads] Unnecessary decay_t in is_execution_policy_v should be remove_cvref_t Yes 0 3063⁽ⁱ⁾ New 26.11 [specialized.algorithms] Parallel algorithms in <memory> are underspecified No 3 3064⁽ⁱ⁾ Resolved 26.11 [specialized.algorithms] How do uninitialized memory algorithms obtain pointer without undefined behavior? Yes 3 3065⁽ⁱ⁾ C++20 31.12.6.8 [fs.path.nonmember] LWG 2989 missed that all path's other operators should be hidden friends as well Yes 2 3066⁽ⁱ⁾ New 29.7.6 [sf.cmath] "report a domain error" in [sf.cmath]/1 is underspecified No 3 3067⁽ⁱ⁾ C++20 31.12.12.2 [fs.rec.dir.itr.members] recursive_directory_iterator::pop must invalidate Yes 0 3068⁽ⁱ⁾ NAD 27.3.3 [string.view.template] Forbid assigning an rvalue basic_string to basic_string_view Yes 2 3069⁽ⁱ⁾ New 22.6.3.4 [variant.assign] Move assigning variant's subobject corrupts data Yes 3 3070⁽ⁱ⁾ C++20 31.12.6.5.11 [fs.path.gen] path::lexically_relative causes surprising results if a filename can also be a root-name Yes 2 3071⁽ⁱ⁾ C++23 17.9 [networking.ts::buffer.read.until] [networking.ts] read_until still refers to "input sequence" Yes 0 3072⁽ⁱ⁾ New 16.2.4 [networking.ts::buffer.reqmts.dynamicbuffer] [networking.ts] DynamicBuffer object lifetimes underspecified Yes 3 3073⁽ⁱ⁾ New 17 [networking.ts::buffer.stream] [networking.ts] (async_)read and (async_)write don't support DynamicBuffer lvalues Yes 3 3074⁽ⁱ⁾ C++20 29.6.3 [valarray.nonmembers] Non-member functions for valarray should only deduce from the valarray Yes 0 3075⁽ⁱ⁾ C++20 27.4.3 [basic.string] basic_string needs deduction guides from basic_string_view Yes 3076⁽ⁱ⁾ C++20 27.4.3.3 [string.cons] basic_string CTAD ambiguity Yes 3077⁽ⁱ⁾ C++20 23.3.13.5 [vector.modifiers] (push|emplace)_back should invalidate the end iterator Yes 3 3078⁽ⁱ⁾ New 31.12.10 [fs.class.directory.entry] directory_entry, directory_iterator and recursive_directory_iterator perform needless path copies No 3 3079⁽ⁱ⁾ C++20 31.12.13.8 [fs.op.create.directory] LWG 2935 forgot to fix the existing_p overloads of create_directory Yes 0 3080⁽ⁱ⁾ C++20 28.2.3 [charconv.from.chars] Floating point from_chars pattern specification breaks round-tripping Yes 0 3081⁽ⁱ⁾ Open 28.2.3 [charconv.from.chars] Floating point from_chars API does not distinguish between overflow and underflow Yes 2 3082⁽ⁱ⁾ Open 28.2.3 [charconv.from.chars] from_chars specification regarding floating point rounding is inconsistent Yes 2 3083⁽ⁱ⁾ C++20 31.5.2.6 [ios.base.storage] What should ios::iword(-1) do? Yes 0 3084⁽ⁱ⁾ New 17.5 [support.start.term] Termination in C++ is unclear No 3 3085⁽ⁱ⁾ C++23 27.2.2 [char.traits.require] char_traits::copy precondition too weak Yes 2 3086⁽ⁱ⁾ New 17.6.3.2 [new.delete.single] Possible problem in §[new.delete.single] Yes 3 3087⁽ⁱ⁾ C++20 23.3.11.5 [list.ops] One final &x in §[list.ops] Yes 3 3088⁽ⁱ⁾ C++23 23.3.7.6 [forward.list.ops] forward_list::merge behavior unclear when passed *this Yes 3 3089⁽ⁱ⁾ New 26.7.1 [alg.copy] copy_n should require non-overlapping ranges Yes 3 3090⁽ⁱ⁾ New 30.5.2 [time.duration.cons] What is §[time.duration.cons]p4's "no overflow is induced in the conversion" intended to mean? Yes 3 3091⁽ⁱ⁾ Resolved 30.9 [time.hms] subsecond-precision time_of_day and durations that seconds cannot convert to Yes 2 3092⁽ⁱ⁾ Open 16.3.3.3.3 [bitmask.types] Unclear semantics of enum class bitmask types Yes 3 3093⁽ⁱ⁾ New 29.7.2 [c.math.abs] LWG 2294/2192 missed a std::abs overload No 3 3094⁽ⁱ⁾ C++20 30.5.11 [time.duration.io] §[time.duration.io]p4 makes surprising claims about encoding Yes 0 3095⁽ⁱ⁾ New 99 [depr.strstreambuf.virtuals] strstreambuf refers to nonexistent member of fpos, fpos::offset Yes 4 3096⁽ⁱ⁾ C++20 31.12.6.5.11 [fs.path.gen] path::lexically_relative is confused by trailing slashes Yes 2 3097⁽ⁱ⁾ New 31.8.2.5 [stringbuf.virtuals] basic_stringbuf seekoff effects trigger undefined behavior and have contradictory returns No 3 3098⁽ⁱ⁾ New 31.12.6.5.9 [fs.path.decompose] Misleading example for filesystem::path::filename() Yes 3 3099⁽ⁱ⁾ Open 21.3.3 [meta.type.synop] is_assignable<Incomplete&, Incomplete&> Yes 2 3100⁽ⁱ⁾ C++20 23.7.2.2.2 [span.cons] Unnecessary and confusing "empty span" wording Yes 0 3101⁽ⁱ⁾ C++20 23.7.2.2.2 [span.cons] span's Container constructors need another constraint Yes 1 3102⁽ⁱ⁾ C++20 23.7.2.2.1 [span.overview] Clarify span iterator and const_iterator behavior Yes 0 3103⁽ⁱ⁾ C++20 23.7.2.2.4 [span.sub] Errors in taking subview of span should be ill-formed where possible Yes 3 3104⁽ⁱ⁾ C++20 30.5.6 [time.duration.nonmember] Fixing duration division Yes 0 3105⁽ⁱ⁾ New 16 [library] T1 is convertible to T2 No 3 3106⁽ⁱ⁾ NAD 17.6.2 [new.syn] nothrow should be inline constexpr rather that extern const Yes 2 3107⁽ⁱ⁾ New 24.6.4 [istreambuf.iterator] istreambuf_iterator has public exposition-only member Yes 4 3108⁽ⁱ⁾ New 24.6.4.2 [istreambuf.iterator.proxy] istreambuf_iterator::proxy::operator* should be const Yes 3 3109⁽ⁱ⁾ New 99 [depr.strstreambuf] strstreambuf is copyable No 4 3110⁽ⁱ⁾ Resolved 24.3.1 [iterator.requirements.general] Contiguous Iterators should always be Random-Access Yes 3 3111⁽ⁱ⁾ Resolved 27.4.3.3 [string.cons] Too strong precondition on basic_string constructor Yes 2 3112⁽ⁱ⁾ C++20 19.5.8.2 [syserr.syserr.members] system_error and filesystem_error constructors taking a string may not be able to meet their postconditions Yes 0 3113⁽ⁱ⁾ Resolved 20.5.3.3 [mem.poly.allocator.mem] polymorphic_allocator::construct() should more closely match scoped_allocator_adaptor::construct() Yes 3 3114⁽ⁱ⁾ LEWG 16 [networking.ts::buffer] [networking.ts] Permit efficient composition when using DynamicBuffer Yes 3115⁽ⁱ⁾ Resolved 26.8.7.2 [includes] Unclear description for algorithm includes Yes 3 3116⁽ⁱ⁾ C++20 20.6.4 [allocator.adaptor.members] OUTERMOST_ALLOC_TRAITS needs remove_reference_t Yes 0 3117⁽ⁱ⁾ C++23 32.10.10 [futures.task] Missing packaged_task deduction guides Yes 3 3118⁽ⁱ⁾ C++23 31.5.3.3 [fpos.operations] fpos equality comparison unspecified Yes 4 3119⁽ⁱ⁾ C++20 3.42 [defns.prog.def.spec] Program-definedness of closure types Yes 2 3120⁽ⁱ⁾ C++23 20.5.6.3 [mem.res.monotonic.buffer.mem] Unclear behavior of monotonic_buffer_resource::release() Yes 2 3121⁽ⁱ⁾ C++23 22.4.4.2 [tuple.cnstr] tuple constructor constraints for UTypes&&... overloads Yes 2 3122⁽ⁱ⁾ C++20 17.3.1 [support.limits.general] __cpp_lib_chrono_udls was accidentally dropped Yes 0 3123⁽ⁱ⁾ C++23 30.5 [time.duration] duration constructor from representation shouldn't be effectively non-throwing Yes 3 3124⁽ⁱ⁾ New 13.7.5 [networking.ts::async.exec.ctx.globals] [networking.ts] Unclear how execution_context is intended to store services Yes 3 3125⁽ⁱ⁾ Resolved 30.5.11 [time.duration.io] duration streaming precondition should be a SFINAE condition Yes 2 3126⁽ⁱ⁾ New 28.6.8 [re.submatch] There's no std::sub_match::compare(string_view) overload Yes 3 3127⁽ⁱ⁾ C++20 31.11.3.1 [syncstream.osyncstream.overview] basic_osyncstream::rdbuf needs a const_cast Yes 0 3128⁽ⁱ⁾ C++20 99 [depr.strstream.oper] strstream::rdbuf needs a const_cast Yes 0 3129⁽ⁱ⁾ C++20 28.6.11.2.2 [re.tokiter.cnstr] regex_token_iterator constructor uses wrong pointer arithmetic Yes 0 3130⁽ⁱ⁾ C++20 31 [input.output] §[input.output] needs many addressof Yes 0 3131⁽ⁱ⁾ C++20 30.13 [time.parse] addressof all the things Yes 0 3132⁽ⁱ⁾ C++20 16.4.5.3.3 [macro.names] Library needs to ban macros named expects or ensures Yes 0 3133⁽ⁱ⁾ C++20 29.2 [numeric.requirements] Modernizing numeric type requirements Yes 0 3134⁽ⁱ⁾ Resolved 99 [fund.ts.v3::meta.type.synop] [fund.ts.v3] LFTSv3 contains extraneous [meta] variable templates that should have been deleted by P09961 Yes 0 3135⁽ⁱ⁾ Resolved 99 [fund.ts.v3::meta.type.synop] [fund.ts.v3] LFTSv3 contains two redundant alias templates Yes 3 3136⁽ⁱ⁾ C++23 6.1.2.3 [fund.ts.v3::propagate_const.class_type_requirements] [fund.ts.v3] LFTSv3 awkward wording in propagate_const requirements Yes 3 3137⁽ⁱ⁾ C++20 17.3.1 [support.limits.general] Header for __cpp_lib_to_chars Yes 0 3138⁽ⁱ⁾ NAD 99 [support.contract.cviol] There is no such thing as assertion-level Yes 2 3139⁽ⁱ⁾ NAD 99 [support.contract.cviol] contract_violation's special member functions Yes 1 3140⁽ⁱ⁾ C++20 21.3.9.7 [meta.trans.other] COMMON_REF is unimplementable as specified Yes 0 3141⁽ⁱ⁾ C++20 18.6 [concepts.object] CopyConstructible doesn't preserve source values Yes 2 3142⁽ⁱ⁾ New 16.4.5.8 [res.on.functions] std::foo<incomplete> should be ill-formed NDR Yes 3 3143⁽ⁱ⁾ C++23 20.5.6 [mem.res.monotonic.buffer] monotonic_buffer_resource growth policy is unclear Yes 2 3144⁽ⁱ⁾ C++20 23.7.2.2.1 [span.overview] span does not have a const_pointer typedef Yes 0 3145⁽ⁱ⁾ C++20 30.7.6 [time.clock.file] file_clock breaks ABI for C++17 implementations Yes 1 3146⁽ⁱ⁾ C++23 22.10.6.7 [refwrap.helpers] Excessive unwrapping in std::ref/cref Yes 3 3147⁽ⁱ⁾ C++20 16.4.5.3.3 [macro.names] Definitions of "likely" and "unlikely" are likely to cause problems Yes 0 3148⁽ⁱ⁾ C++20 16.4.2.5 [compliance] <concepts> should be freestanding Yes 0 3149⁽ⁱ⁾ C++20 18.4.12 [concept.default.init] DefaultConstructible should require default initialization Yes 2 3150⁽ⁱ⁾ C++20 29.5.3.3 [rand.req.urng] UniformRandomBitGenerator should validate min and max Yes 3 3151⁽ⁱ⁾ Resolved 18.4.4 [concept.convertible] ConvertibleTo rejects conversions from array and function types Yes 3 3152⁽ⁱ⁾ C++23 21.3.9.7 [meta.trans.other] common_type and common_reference have flaws in common Yes 3 3153⁽ⁱ⁾ C++20 18.4.6 [concept.common] Common and common_type have too little in common Yes 0 3154⁽ⁱ⁾ C++20 18.4.6 [concept.common] Common and CommonReference have a common defect Yes 0 3155⁽ⁱ⁾ Resolved 22.4.4.2 [tuple.cnstr] tuple<any, any>{allocator_arg_t, an_allocator} Yes 3 3156⁽ⁱ⁾ Resolved 26.11 [specialized.algorithms] ForwardIterator should only mean forward iterator Yes 3 3157⁽ⁱ⁾ New 16.4.4.6 [allocator.requirements] Allocator destroy and fancy pointer operations must be non-throwing Yes 3 3158⁽ⁱ⁾ C++20 22.4.4.2 [tuple.cnstr] tuple(allocator_arg_t, const Alloc&) should be conditionally explicit Yes 3 3159⁽ⁱ⁾ New 20.3.1.3 [unique.ptr.single] §[unique.ptr.single] requirements on deleter may be too strict No 3 3160⁽ⁱ⁾ C++20 32.5.7 [atomics.ref.generic] atomic_ref() = delete; should be deleted Yes 0 3161⁽ⁱ⁾ Open 23.6.6 [stack] Container adapters mandate use of emplace_back but don't require it Yes 3 3162⁽ⁱ⁾ New 19.5.8.2 [syserr.syserr.members] system_error::system_error(error_code ec) not explicit Yes 3 3163⁽ⁱ⁾ NAD 16.2 [networking.ts::buffer.reqmts] [networking.ts] Buffer sequence iterator equivalency Yes 3164⁽ⁱ⁾ NAD 20.3.1.3.2 [unique.ptr.single.ctor] Unhelpful "shall not participate" constraints for unique_ptr with reference deleter Yes 3165⁽ⁱ⁾ NAD 27.4.3 [basic.string] All starts_with() overloads should be called "begins_with" Yes 2 3166⁽ⁱ⁾ New 22.3.4 [pair.astuple] No such descriptive element as Value: No 3 3167⁽ⁱ⁾ Open 8.2 [fund.ts.v3::memory.observer.ptr] [fund.ts.v3] Does observer_ptr support function types? No 3 3168⁽ⁱ⁾ Resolved 16.3.2.4 [structure.specifications] Expects: element should be specified in one place Yes 2 3169⁽ⁱ⁾ C++20 26.8.13 [alg.permutation.generators] ranges permutation generators discard useful information Yes 0 3170⁽ⁱ⁾ C++23 20.2.10 [default.allocator] is_always_equal added to std::allocator makes the standard library treat derived types as always equal Yes 2 3171⁽ⁱ⁾ C++23 31.12.10 [fs.class.directory.entry] LWG 2989 breaks directory_entry stream insertion Yes 2 3172⁽ⁱ⁾ New 29.7.3 [c.math.hypot3] 3-arg std::hypot is underspecified compared to the 2-arg overload Yes 3 3173⁽ⁱ⁾ C++20 25.7.6.2 [range.ref.view] Enable CTAD for ref-view Yes 0 3174⁽ⁱ⁾ New 21.3.8 [meta.rel] Precondition on is_convertible is too strong Yes 3 3175⁽ⁱ⁾ C++20 18.4.9 [concept.swappable] The CommonReference requirement of concept SwappableWith is not satisfied in the example Yes 1 3176⁽ⁱ⁾ Resolved 23.2.8 [unord.req] Underspecified behavior of unordered containers when Container::key_equal differs from Pred Yes 2 3177⁽ⁱ⁾ C++23 16.4.5.2.1 [namespace.std] Limit permission to specialize variable templates to program-defined types Yes 3 3178⁽ⁱ⁾ Resolved 99 [mismatch] std::mismatch is missing an upper bound Yes 0 3179⁽ⁱ⁾ C++20 25.5.4.2 [range.subrange.ctor] subrange should always model Range Yes 0 3180⁽ⁱ⁾ C++20 26.4 [algorithm.syn] Inconsistently named return type for ranges::minmax_element Yes 0 3181⁽ⁱ⁾ NAD 25.7.16.3 [range.lazy.split.outer] split_view::outer_iterator converting constructor is misconstrained Yes 3182⁽ⁱ⁾ C++20 18.4.2 [concept.same] Specification of Same could be clearer Yes 0 3183⁽ⁱ⁾ C++20 24.3.4.8 [iterator.concept.sizedsentinel] Normative permission to specialize Ranges variable templates Yes 0 3184⁽ⁱ⁾ C++20 22.10.14 [func.bind.partial] Inconsistencies in bind_front wording Yes 0 3185⁽ⁱ⁾ C++20 20.2.8.2 [allocator.uses.construction] Uses-allocator construction functions missing constexpr and noexcept Yes 0 3186⁽ⁱ⁾ C++20 26.7.8 [alg.remove] ranges removal, partition, and partial_sort_copy algorithms discard useful information Yes 1 3187⁽ⁱ⁾ C++20 20.2.8.2 [allocator.uses.construction] P0591R4 reverted DR 2586 fixes to scoped_allocator_adaptor::construct() Yes 3188⁽ⁱ⁾ New 24.6.4 [istreambuf.iterator] istreambuf_iterator::pointer should not be unspecified Yes 3 3189⁽ⁱ⁾ New 23.6.4 [priority.queue] Missing requirement for std::priority_queue No 3 3190⁽ⁱ⁾ C++20 20.2.10.2 [allocator.members] std::allocator::allocate sometimes returns too little storage Yes 3 3191⁽ⁱ⁾ C++20 26.7.13 [alg.random.shuffle] std::ranges::shuffle synopsis does not match algorithm definition Yes 1 3192⁽ⁱ⁾ New 20.2.8.2 [allocator.uses.construction] §[allocator.uses.construction] functions misbehave for const types Yes 3 3193⁽ⁱ⁾ New 16.3.2.4 [structure.specifications] Mandates: and Expects: elements are not defined for types Yes 3 3194⁽ⁱ⁾ C++20 18.4.4 [concept.convertible] ConvertibleTo prose does not match code Yes 1 3195⁽ⁱ⁾ C++23 20.3.2.3.2 [util.smartptr.weak.const] What is the stored pointer value of an empty weak_ptr? Yes 2 3196⁽ⁱ⁾ C++20 22.5.3 [optional.optional] std::optional<T> is ill-formed is T is an array Yes 0 3197⁽ⁱ⁾ New 24.4.3 [iterator.operations] std::prev should not require BidirectionalIterator Yes 3 3198⁽ⁱ⁾ C++20 23.7.2.2.2 [span.cons] Bad constraint on std::span::span() Yes 3199⁽ⁱ⁾ C++20 22.9.4 [bitset.operators] istream >> bitset<0> fails Yes 3200⁽ⁱ⁾ C++20 26.10.16 [numeric.ops.midpoint] midpoint should not constrain T is complete Yes 2 3201⁽ⁱ⁾ C++20 29.7.4 [c.math.lerp] lerp should be marked as noexcept Yes 2 3202⁽ⁱ⁾ C++20 22.10.2 [functional.syn] P0318R1 was supposed to be revised Yes 0 3203⁽ⁱ⁾ WP 23.7.2.2.1 [span.overview] span element access invalidation Yes 2 3204⁽ⁱ⁾ C++23 28.6.8 [re.submatch] sub_match::swap only swaps the base class Yes 3 3205⁽ⁱ⁾ New 21.3.9.7 [meta.trans.other] decay_t in the new common_type fallback should be remove_cvref_t Yes 3 3206⁽ⁱ⁾ C++20 30.8.14.2 [time.cal.ymd.members] year_month_day conversion to sys_days uses not-existing member function Yes 0 3207⁽ⁱ⁾ NAD 24.7 [iterator.range] N in ssize(const T (&)[N]) should be size_t Yes 3208⁽ⁱ⁾ C++20 24.7 [iterator.range] Boolean's expression requirements are ordered inconsistently Yes 0 3209⁽ⁱ⁾ C++20 30.8.5.2 [time.cal.year.members] Expression in year::ok() returns clause is ill-formed Yes 0 3210⁽ⁱ⁾ New 20.3.2.2.7 [util.smartptr.shared.create] allocate_shared is inconsistent about removing const from the pointer passed to allocator construct and destroy Yes 3 3211⁽ⁱ⁾ C++23 22.4.4.2 [tuple.cnstr] std::tuple<> should be trivially constructible Yes 3 3212⁽ⁱ⁾ Resolved 99 [span.tuple] tuple_element_t<1, const span<int, 42>> is const int Yes 2 3213⁽ⁱ⁾ Resolved 26.6.5 [alg.foreach] for_each_n and copy_n missing requirements for Size Yes 3 3214⁽ⁱ⁾ New 28.3.4.3.2.3 [facet.num.get.virtuals] §[facet.num.get.virtuals] doesn't say what it means for digit grouping to be consistent No 4 3215⁽ⁱ⁾ New 22.6.3.2 [variant.ctor] variant default constructor has vague constexpr requirements No 2 3216⁽ⁱ⁾ WP 20.3.2.2.7 [util.smartptr.shared.create] Rebinding the allocator before calling construct/destroy in allocate_shared Yes 3 3217⁽ⁱ⁾ New 17.3.1 [support.limits.general] <memory> and <execution> should define __cpp_lib_parallel_algorithm Yes 3 3218⁽ⁱ⁾ C++20 30.13 [time.parse] Modifier for %d parse flag does not match POSIX and format specification Yes 0 3219⁽ⁱ⁾ New 23.3.3.1 [array.overview] std::array overview container requirements are incorrect Yes 3 3220⁽ⁱ⁾ New 32.5.2 [atomics.syn] P0558 broke conforming C++14 uses of atomic shared_ptr Yes 3 3221⁽ⁱ⁾ C++20 30.8.13.3 [time.cal.ym.nonmembers] Result of year_month arithmetic with months is ambiguous Yes 0 3222⁽ⁱ⁾ C++20 26.10.9 [inclusive.scan] P0574R1 introduced preconditions on non-existent parameters Yes 0 3223⁽ⁱ⁾ Resolved 29.7.1 [cmath.syn] lerp should not add the "sufficient additional overloads" Yes 2 3224⁽ⁱ⁾ C++20 30.11.7.2 [time.zone.zonedtime.ctor] zoned_time constructor from TimeZonePtr does not specify initialization of tp_ Yes 0 3225⁽ⁱ⁾ C++20 30.11.7.2 [time.zone.zonedtime.ctor] zoned_time converting constructor shall not be noexcept Yes 0 3226⁽ⁱ⁾ C++20 30.11.7.2 [time.zone.zonedtime.ctor] zoned_time constructor from string_view should accept zoned_time<Duration2, TimeZonePtr2> Yes 2 3227⁽ⁱ⁾ New 23.2.7 [associative.reqmts] Ambiguity issue for extract in ordered and unordered associative containers Yes 3 3228⁽ⁱ⁾ Resolved 22.6.3.2 [variant.ctor] Surprising variant construction Yes 2 3229⁽ⁱ⁾ New 16.4.6.14 [res.on.exception.handling] §[res.on.exception.handling]#3 cannot apply to types with implicitly declared destructors Yes 3 3230⁽ⁱ⁾ C++20 30.13 [time.parse] Format specifier %y/%Y is missing locale alternative versions Yes 0 3231⁽ⁱ⁾ C++20 30.8.15.2 [time.cal.ymdlast.members] year_month_day_last::day specification does not cover !ok() values Yes 0 3232⁽ⁱ⁾ C++20 30.11.7.1 [time.zone.zonedtime.overview] Inconsistency in zoned_time deduction guides Yes 0 3233⁽ⁱ⁾ C++20 20.3.2.2.2 [util.smartptr.shared.const] Broken requirements for shared_ptr converting constructors Yes 0 3234⁽ⁱ⁾ Resolved 29.7.1 [cmath.syn] Sufficient Additional Special Math Overloads Yes 3 3235⁽ⁱ⁾ C++20 30.13 [time.parse] parse manipulator without abbreviation is not callable Yes 0 3236⁽ⁱ⁾ C++23 24.3.5.7 [random.access.iterators] Random access iterator requirements lack limiting relational operators domain to comparing those from the same range Yes 3 3237⁽ⁱ⁾ C++20 20.5.3.3 [mem.poly.allocator.mem] LWG 3038 and 3190 have inconsistent PRs Yes 2 3238⁽ⁱ⁾ C++20 22.10.17.3.2 [func.wrap.func.con] Insufficiently-defined behavior of std::function deduction guides Yes 3239⁽ⁱ⁾ Resolved 17.12.2.2 [cmp.partialord] Hidden friends should be specified more narrowly Yes 3240⁽ⁱ⁾ New 16.4.3.2 [using.headers] Headers declare more than entities No 3 3241⁽ⁱ⁾ C++20 30.12 [time.format] chrono-spec grammar ambiguity in §[time.format] Yes 0 3242⁽ⁱ⁾ C++20 28.5.2.2 [format.string.std] std::format: missing rules for arg-id in width and precision Yes 1 3243⁽ⁱ⁾ C++20 28.5.2 [format.string] std::format and negative zeroes Yes 2 3244⁽ⁱ⁾ C++20 31.12.6.4 [fs.path.req] Constraints for Source in §[fs.path.req] insufficiently constrainty Yes 0 3245⁽ⁱ⁾ C++20 30.13 [time.parse] Unnecessary restriction on '%p' parse specifier Yes 0 3246⁽ⁱ⁾ C++20 28.5.8.1 [format.arg] What are the constraints on the template parameter of basic_format_arg? Yes 0 3247⁽ⁱ⁾ C++20 24.3.3.1 [iterator.cust.move] ranges::iter_move should perform ADL-only lookup of iter_move Yes 2 3248⁽ⁱ⁾ C++20 28.5.2.2 [format.string.std] std::format #b, #B, #o, #x, and #X presentation types misformat negative numbers Yes 2 3249⁽ⁱ⁾ C++23 32.5.5 [atomics.lockfree] There are no 'pointers' in §[atomics.lockfree] Yes 4 3250⁽ⁱ⁾ C++20 28.5.2.2 [format.string.std] std::format: # (alternate form) for NaN and inf Yes 0 3251⁽ⁱ⁾ C++20 28.5.2 [format.string] Are std::format alignment specifiers applied to string arguments? Yes 2 3252⁽ⁱ⁾ C++20 30.13 [time.parse] Parse locale's aware modifiers for commands are not consistent with POSIX spec Yes 2 3253⁽ⁱ⁾ C++20 31.11.2.1 [syncstream.syncbuf.overview] basic_syncbuf::basic_syncbuf() should not be explicit Yes 0 3254⁽ⁱ⁾ C++20 32.3.4 [stoptoken] Strike stop_token's operator!= Yes 0 3255⁽ⁱ⁾ C++20 23.7.2.2.2 [span.cons] span's array constructor is too strict Yes 2 3256⁽ⁱ⁾ C++20 17.3.1 [support.limits.general] Feature testing macro for constexpr algorithms Yes 0 3257⁽ⁱ⁾ C++20 17.3.1 [support.limits.general] Missing feature testing macro update from P0858 Yes 0 3258⁽ⁱ⁾ Resolved 25.3.2 [range.access.begin] Range access and initializer_list Yes 3 3259⁽ⁱ⁾ C++20 24.3.1 [iterator.requirements.general] The definition of constexpr iterators should be adjusted Yes 0 3260⁽ⁱ⁾ C++20 30.8 [time.cal] year_month* arithmetic rejects durations convertible to years Yes 2 3261⁽ⁱ⁾ New 28.6.7 [re.regex] regex components' noexcept annotations appear broken for POCMA or throwing BidirectionalIterator No 3 3262⁽ⁱ⁾ C++20 30.12 [time.format] Formatting of negative durations is not specified Yes 2 3263⁽ⁱ⁾ New 32.5.6 [atomics.wait] Atomic waiting function calls should only be unblocked once Yes 3 3264⁽ⁱ⁾ C++20 25.4.4 [range.sized] sized_range and ranges::size redundantly use disable_sized_range Yes 1 3265⁽ⁱ⁾ C++23 24.5.4.4 [move.iter.cons] move_iterator's conversions are more broken after P1207 Yes 2 3266⁽ⁱ⁾ C++20 28.2.1 [charconv.syn] to_chars(bool) should be deleted Yes 0 3267⁽ⁱ⁾ New 16.4.4.6 [allocator.requirements] Rebound allocators and is_always_equal Yes 4 3268⁽ⁱ⁾ New 32.5.4 [atomics.order] memory_order::memory_order_foo broken in C++20 Yes 4 3269⁽ⁱ⁾ C++20 30.13 [time.parse] Parse manipulators do not specify the result of the extraction from stream Yes 2 3270⁽ⁱ⁾ C++20 30.12 [time.format] Parsing and formatting %j with durations Yes 2 3271⁽ⁱ⁾ NAD 30.13 [time.parse] Parsing functions should save and restore stream format state Yes 3 3272⁽ⁱ⁾ C++20 30.12 [time.format] %I%p should parse/format duration since midnight Yes 0 3273⁽ⁱ⁾ C++20 30.8.7.2 [time.cal.wdidx.members] Specify weekday_indexed to range of [0, 7] Yes 0 3274⁽ⁱ⁾ C++20 17.3.1 [support.limits.general] Missing feature test macro for <span> Yes 0 3275⁽ⁱ⁾ New 28.3.4.6.2.3 [locale.time.get.virtuals] Why does time_get::do_get require a valid pointer when none of the others do? Yes 3 3276⁽ⁱ⁾ C++20 25.7.16.4 [range.lazy.split.outer.value] Class split_view::outer_iterator::value_type should inherit from view_interface Yes 0 3277⁽ⁱ⁾ C++20 24.3.4.13 [iterator.concept.random.access] Pre-increment on prvalues is not a requirement of weakly_incrementable Yes 0 3278⁽ⁱ⁾ Resolved 25.7.14.2 [range.join.view] join_view<V>::iterator<true> tries to write through const join_view ptr Yes 2 3279⁽ⁱ⁾ Resolved 24.3.4.2 [iterator.concept.readable] shared_ptr<int>& does not not satisfy readable Yes 1 3280⁽ⁱ⁾ C++20 25.7.8.2 [range.filter.view] View converting constructors can cause constraint recursion and are unneeded Yes 1 3281⁽ⁱ⁾ C++20 25.5.4 [range.subrange] Conversion from pair-like types to subrange is a silent semantic promotion Yes 1 3282⁽ⁱ⁾ C++20 25.5.4 [range.subrange] subrange converting constructor should disallow derived to base conversions Yes 1 3283⁽ⁱ⁾ Resolved 24.3.2.3 [iterator.traits] Types satisfying input_iterator but not equality_comparable look like C++17 output iterators Yes 2 3284⁽ⁱ⁾ C++20 24.3.4.13 [iterator.concept.random.access] random_access_iterator semantic constraints accidentally promote difference type using unary negate Yes 0 3285⁽ⁱ⁾ C++20 16.3.3.3.5 [customization.point.object] The type of a customization point object shall satisfy semiregular Yes 0 3286⁽ⁱ⁾ C++20 25.7.10.2 [range.take.view] ranges::size is not required to be valid after a call to ranges::begin on an input range Yes 0 3287⁽ⁱ⁾ New 24.3.2.3 [iterator.traits] Exposition-only cpp17-input-iterator concept is needlessly complex Yes 3 3288⁽ⁱ⁾ New 32.5.6 [atomics.wait] atomic<T>::notify_one is unimplementable Yes 2 3289⁽ⁱ⁾ Resolved 24.3.2.3 [iterator.traits] Cannot opt out of C++17 iterator-ness without also opting out of C++20 iterator-ness Yes 2 3290⁽ⁱ⁾ C++20 28.5.2.2 [format.string.std] Are std::format field widths code units, code points, or something else? Yes 3291⁽ⁱ⁾ C++20 25.6.4.3 [range.iota.iterator] iota_view::iterator has the wrong iterator_category Yes 0 3292⁽ⁱ⁾ C++20 25.6.4.2 [range.iota.view] iota_view is under-constrained Yes 3293⁽ⁱ⁾ C++23 24.5.4.9 [move.iter.nonmember] move_iterator operator+() has incorrect constraints Yes 3 3294⁽ⁱ⁾ C++20 30.11.7.1 [time.zone.zonedtime.overview] zoned_time deduction guides misinterprets string/char* Yes 0 3295⁽ⁱ⁾ Resolved 17.12.2 [cmp.categories] Comparison category operator== are mis-specified Yes 1 3296⁽ⁱ⁾ C++20 28.6.7 [re.regex] Inconsistent default argument for basic_regex<>::assign Yes 0 3297⁽ⁱ⁾ New 23.2.4 [sequence.reqmts] Useless sequence container requirement Yes 3 3298⁽ⁱ⁾ NAD 25.7.11.2 [range.take.while.view] Range adaptors introduced by P1035 do not require viewable_range Yes 3299⁽ⁱ⁾ C++20 24.3.3.1 [iterator.cust.move] Pointers don't need customized iterator behavior Yes 0 3300⁽ⁱ⁾ C++20 24.7 [iterator.range] Non-array ssize overload is underconstrained Yes 3 3301⁽ⁱ⁾ C++20 25.7.9.3 [range.transform.iterator] transform_view::iterator has incorrect iterator_category Yes 1 3302⁽ⁱ⁾ C++20 25.2 [ranges.syn] Range adaptor objects keys and values are unspecified Yes 1 3303⁽ⁱ⁾ C++20 20.2.2 [memory.syn] Bad "constexpr" marker for destroy/destroy_n Yes 0 3304⁽ⁱ⁾ C++20 20.5.3 [mem.poly.allocator.class] Allocate functions of std::polymorphic_allocator should require [[nodiscard]] Yes 3 3305⁽ⁱ⁾ WP 22.7.5 [any.nonmembers] any_cast<void> Yes 2 3306⁽ⁱ⁾ C++23 24.4.4.2 [range.iter.op.advance] ranges::advance violates its preconditions Yes 2 3307⁽ⁱ⁾ C++20 20.2.10 [default.allocator] std::allocator<void>().allocate(n) Yes 0 3308⁽ⁱ⁾ New 23.3.5.4 [deque.modifiers] vector and deque iterator erase invalidates elements even when no change occurs Yes 3 3309⁽ⁱ⁾ New 31.8 [string.streams] Is <ios> implicitly #included by <sstream>, <fstream> etc.? No 3 3310⁽ⁱ⁾ C++20 20.5.3.3 [mem.poly.allocator.mem] Replace SIZE_MAX with numeric_limits<size_t>::max() Yes 0 3311⁽ⁱ⁾ Dup 27.4.3.3 [string.cons] basic_string::operator=(charT c) should be constrained Yes 3312⁽ⁱ⁾ Dup 20.5.3 [mem.poly.allocator.class] polymorphic_allocator::allocate_object and new_object should be [[nodiscard]] Yes 3313⁽ⁱ⁾ C++20 25.7.14.3 [range.join.iterator] join_view::iterator::operator-- is incorrectly constrained Yes 0 3314⁽ⁱ⁾ C++20 30.5.11 [time.duration.io] Is stream insertion behavior locale dependent when Period::type is micro? Yes 2 3315⁽ⁱ⁾ C++20 16.4.4.6 [allocator.requirements] Correct Allocator Default Behavior Yes 0 3316⁽ⁱ⁾ C++20 30.7.3.1 [time.clock.utc.overview] Correctly define epoch for utc_clock / utc_timepoint Yes 0 3317⁽ⁱ⁾ C++20 30.5.11 [time.duration.io] Incorrect operator<< for floating-point durations Yes 0 3318⁽ⁱ⁾ C++20 30.7.2.1 [time.clock.system.overview] Clarify whether clocks can represent time before their epoch Yes 0 3319⁽ⁱ⁾ C++20 30.11.1 [time.zone.general] Properly reference specification of IANA time zone database Yes 0 3320⁽ⁱ⁾ C++20 23.7.2.2.7 [span.iterators] span::cbegin/cend methods produce different results than std::[ranges::]cbegin/cend Yes 0 3321⁽ⁱ⁾ C++20 20.2.8.2 [allocator.uses.construction] uninitialized_construct_using_allocator should use construct_at Yes 0 3322⁽ⁱ⁾ Resolved 25.7.14.2 [range.join.view] Add join_view::base() member function Yes 0 3323⁽ⁱ⁾ C++20 25.7.23.2 [range.elements.view] has-tuple-element helper concept needs convertible_to Yes 0 3324⁽ⁱ⁾ C++20 17.12.6 [cmp.alg] Special-case std::strong/weak/partial_order for pointers Yes 0 3325⁽ⁱ⁾ C++20 25.7.9.2 [range.transform.view] Constrain return type of transformation function for transform_view Yes 0 3326⁽ⁱ⁾ C++20 25.4.5 [range.view] enable_view has false positives Yes 0 3327⁽ⁱ⁾ C++20 28.5.2.2 [format.string.std] Format alignment specifiers vs. text direction Yes 0 3328⁽ⁱ⁾ C++20 D.22.1 [depr.fs.path.factory] Clarify that std::string is not good for UTF-8 Yes 0 3329⁽ⁱ⁾ C++20 18.5.5 [concept.totallyordered] totally_ordered_with both directly and indirectly requires common_reference_with Yes 0 3330⁽ⁱ⁾ C++20 17.13.2 [coroutine.syn] Include <compare> from most library headers Yes 0 3331⁽ⁱ⁾ C++20 18.5.5 [concept.totallyordered] Define totally_ordered/_with in terms of partially-ordered-with Yes 0 3332⁽ⁱ⁾ C++20 30.12 [time.format] Issue in §[time.format] Yes 0 3333⁽ⁱ⁾ NAD 25.3.4 [range.access.cbegin] ranges::cbegin/ranges::cend, (and maybe ranges::crbegin/ranges::crend) are under-specified to allow rvalue-arrays Yes 3334⁽ⁱ⁾ C++20 31.11.3 [syncstream.osyncstream] basic_osyncstream move assignment and destruction calls basic_syncbuf::emit() twice Yes 3 3335⁽ⁱ⁾ C++20 25.2 [ranges.syn] Resolve C++20 NB comments US 273 and GB 274 Yes 1 3336⁽ⁱ⁾ Resolved 28.5.5 [format.functions] How does std::vformat handle exception thrown by formatters? Yes 2 3337⁽ⁱ⁾ New 28.3.4.2.5.3 [locale.codecvt.virtuals] What is "is initialized" supposed to mean? No 3 3338⁽ⁱ⁾ C++20 18.4.12 [concept.default.init] Rename default_constructible to default_initializable Yes 0 3339⁽ⁱ⁾ New 27.4.3 [basic.string] Move-constructed empty-container capacity No 3 3340⁽ⁱ⁾ C++20 28.5.5 [format.functions] Formatting functions should throw on argument/format string mismatch in §[format.functions] Yes 3341⁽ⁱ⁾ New 28.6.7.2 [re.regex.construct] basic_regex range constructor: Missing requirements for iterator types No 3 3342⁽ⁱ⁾ New 22.3.2 [pairs.pair] Library wording uses "initializes x with y", which is underspecified No 3 3343⁽ⁱ⁾ Open 32.7.3 [thread.condition.nonmember] Ordering of calls to unlock() and notify_all() in Effects element of notify_all_at_thread_exit() should be reversed Yes 3 3344⁽ⁱ⁾ New 24.4.3 [iterator.operations] advance(i, most-negative) and prev(i, most-negative) Yes 3 3345⁽ⁱ⁾ Resolved 18.4.9 [concept.swappable] Incorrect usages of "models" versus "satisfies" Yes 2 3346⁽ⁱ⁾ C++20 22.3.2 [pairs.pair] pair and tuple copy and move constructor have backwards specification Yes 0 3347⁽ⁱ⁾ C++20 22.3.3 [pairs.spec] std::pair<T, U> now requires T and U to be less-than-comparable Yes 1 3348⁽ⁱ⁾ C++20 17.3.2 [version.syn] __cpp_lib_unwrap_ref in wrong header Yes 2 3349⁽ⁱ⁾ C++20 17.3.2 [version.syn] Missing __cpp_lib_constexpr_complex for P0415R1 Yes 0 3350⁽ⁱ⁾ C++20 26.8.12 [alg.three.way] Simplify return type of lexicographical_compare_three_way Yes 0 3351⁽ⁱ⁾ C++20 25.2 [ranges.syn] ranges::enable_safe_range should not be constrained Yes 0 3352⁽ⁱ⁾ C++20 23.2.2 [container.requirements.general] strong_equality isn't a thing Yes 1 3353⁽ⁱ⁾ New 28.3.3.1 [locale] locale's copy assignment operator should return locale& Yes 3 3354⁽ⁱ⁾ C++20 21.3.6.4 [meta.unary.prop] has_strong_structural_equality has a meaningless definition Yes 1 3355⁽ⁱ⁾ C++20 26.11.5 [uninitialized.copy] The memory algorithms should support move-only input iterators introduced by P1207 Yes 2 3356⁽ⁱ⁾ C++20 17.3.2 [version.syn] __cpp_lib_nothrow_convertible should be __cpp_lib_is_nothrow_convertible Yes 0 3357⁽ⁱ⁾ Open 99 [fund.ts.v3::rand.util.randint] [fund.ts.v3] default_random_engine is overspecified for per-thread engine Yes 3 3358⁽ⁱ⁾ C++20 23.7.2.2.2 [span.cons] §[span.cons] is mistaken that to_address can throw Yes 0 3359⁽ⁱ⁾ C++20 30.11.8 [time.zone.leap] <chrono> leap second support should allow for negative leap seconds Yes 3 3360⁽ⁱ⁾ C++20 17.12.4 [cmp.concept] three_way_comparable_with is inconsistent with similar concepts Yes 0 3361⁽ⁱ⁾ C++23 25.4.2 [range.range] safe_range<SomeRange&> case Yes 3 3362⁽ⁱ⁾ C++20 32.3.5 [stopsource] Strike stop_source's operator!= Yes 0 3363⁽ⁱ⁾ C++20 25.7.13.2 [range.drop.while.view] drop_while_view should opt-out of sized_range Yes 1 3364⁽ⁱ⁾ C++20 25.7.11.2 [range.take.while.view] Initialize data members of ranges and their iterators Yes 0 3365⁽ⁱ⁾ NAD 25.7.14.3 [range.join.iterator] Rename ref-is-glvalue to deref-is-ref Yes 0 3366⁽ⁱ⁾ Resolved 24.3.4.4 [iterator.concept.winc] Narrowing conversions between integer and integer-class types Yes 3 3367⁽ⁱ⁾ C++20 24.3.4.4 [iterator.concept.winc] Integer-class conversions should not throw Yes 0 3368⁽ⁱ⁾ Resolved 25.3.10 [range.prim.size] Exactly when does size return end - begin? Yes 0 3369⁽ⁱ⁾ C++20 23.7.2.2.1 [span.overview] span's deduction-guide for built-in arrays doesn't work Yes 0 3370⁽ⁱ⁾ New 17.4.1 [cstdint.syn] §[cstdint.syn]p2 and §[headers]p5 are not sufficiently clear No 3 3371⁽ⁱ⁾ C++20 28.5.8.1 [format.arg] visit_format_arg and make_format_args are not hidden friends Yes 0 3372⁽ⁱ⁾ C++20 28.5.5 [format.functions] vformat_to should not try to deduce Out twice Yes 0 3373⁽ⁱ⁾ C++20 28.2.1 [charconv.syn] {to,from}_chars_result and format_to_n_result need the "we really mean what we say" wording Yes 0 3374⁽ⁱ⁾ C++20 20.2.4 [pointer.conversion] P0653 + P1006 should have made the other std::to_address overload constexpr Yes 0 3375⁽ⁱ⁾ C++20 25.4.6 [range.refinements] decay in viewable_range should be remove_cvref Yes 0 3376⁽ⁱ⁾ Resolved 24.3.4.4 [iterator.concept.winc] "integer-like class type" is too restrictive Yes 3 3377⁽ⁱ⁾ C++20 25.7.23.3 [range.elements.iterator] elements_view::iterator befriends a specialization of itself Yes 0 3378⁽ⁱ⁾ New 22.4.2 [tuple.syn] tuple_size_v/tuple_element_t should be available when tuple_size/tuple_element are Yes 3 3379⁽ⁱ⁾ C++20 25.2 [ranges.syn] "safe" in several library names is misleading Yes 1 3380⁽ⁱ⁾ C++20 21.3.9.7 [meta.trans.other] common_type and comparison categories Yes 0 3381⁽ⁱ⁾ C++20 25.4.6 [range.refinements] begin and data must agree for contiguous_range Yes 0 3382⁽ⁱ⁾ C++20 22.3.2 [pairs.pair] NTTP for pair and array Yes 2 3383⁽ⁱ⁾ C++20 30.11.8.3 [time.zone.leap.nonmembers] §[time.zone.leap.nonmembers] sys_seconds should be replaced with seconds Yes 1 3384⁽ⁱ⁾ C++20 25.7.9.4 [range.transform.sentinel] transform_view::sentinel has an incorrect operator- Yes 0 3385⁽ⁱ⁾ C++20 24.5.5.1 [common.iterator] common_iterator is not sufficiently constrained for non-copyable iterators Yes 0 3386⁽ⁱ⁾ C++20 25.7.23 [range.elements] elements_view needs its own sentinel type Yes 1 3387⁽ⁱ⁾ C++20 25.7.21.2 [range.reverse.view] §[range.reverse.view] reverse_view<V> unintentionally requires range<const V> Yes 0 3388⁽ⁱ⁾ C++20 25.6.4.3 [range.iota.iterator] view iterator types have ill-formed <=> operators Yes 0 3389⁽ⁱ⁾ C++20 24.5.7.2 [counted.iter.const] A move-only iterator still does not have a counted_iterator Yes 0 3390⁽ⁱ⁾ C++20 24.5.4.9 [move.iter.nonmember] make_move_iterator() cannot be used to construct a move_iterator for a move-only iterator Yes 0 3391⁽ⁱ⁾ C++23 24.5.4 [move.iterators] Problems with counted_iterator/move_iterator::base() const & Yes 2 3392⁽ⁱ⁾ C++23 24.4.4.3 [range.iter.op.distance] ranges::distance() cannot be used on a move-only iterator with a sized sentinel Yes 3 3393⁽ⁱ⁾ C++20 17.3.2 [version.syn] Missing/incorrect feature test macro for coroutines Yes 0 3394⁽ⁱ⁾ NAD 25.6.6.3 [range.istream.iterator] ranges::basic_istream_view::iterator has an empty iterator_traits Yes 2 3395⁽ⁱ⁾ C++20 99 [defns.comparison] Definition for three-way comparison needs to be updated (US 152) Yes 1 3396⁽ⁱ⁾ C++20 17.8.2.2 [support.srcloc.cons] Clarify point of reference for source_location::current() (DE 169) Yes 2 3397⁽ⁱ⁾ C++20 25.6.6.3 [range.istream.iterator] ranges::basic_istream_view::iterator should not provide iterator_category Yes 1 3398⁽ⁱ⁾ C++20 25.2 [ranges.syn] tuple_element_t is also wrong for const subrange Yes 0 3399⁽ⁱ⁾ NAD 31.11.2.1 [syncstream.syncbuf.overview] basic_syncbuf::emit() + Qt's #define emit = Big Bada-Boom Yes 3400⁽ⁱ⁾ New 21.3.8 [meta.rel] Does is_nothrow_convertible consider destruction of the destination type? No 3 3401⁽ⁱ⁾ New 16.3.2.4 [structure.specifications] Is "as if by" equivalent to "equivalent to"? No 3 3402⁽ⁱ⁾ New 29.5.9.3.4 [rand.dist.bern.negbin] Wording for negative_binomial_distribution is unclear as a consequence of LWG 2406 resolution No 3 3403⁽ⁱ⁾ C++23 25.3.11 [range.prim.ssize] Domain of ranges::ssize(E) doesn't match ranges::size(E) Yes 2 3404⁽ⁱ⁾ C++23 25.5.4 [range.subrange] Finish removing subrange's conversions from pair-like Yes 0 3405⁽ⁱ⁾ C++23 25.7.20.2 [range.common.view] common_view's converting constructor is bad, too Yes 0 3406⁽ⁱ⁾ C++23 25.7.23.2 [range.elements.view] elements_view::begin() and elements_view::end() have incompatible constraints Yes 1 3407⁽ⁱ⁾ C++23 25.7.10.1 [range.take.overview] Some problems with the wording changes of P1739R4 Yes 2 3408⁽ⁱ⁾ Resolved 24.5.7.1 [counted.iterator] LWG 3291 reveals deficiencies in counted_iterator Yes 2 3409⁽ⁱ⁾ New 32.5.7.2 [atomics.ref.ops] Too lax description of atomic_ref<T>::required_alignment Yes 3 3410⁽ⁱ⁾ C++23 26.8.12 [alg.three.way] lexicographical_compare_three_way is overspecified Yes 3 3411⁽ⁱ⁾ C++23 8.3 [fund.ts.v3::memory.resource.syn] [fund.ts.v3] Contradictory namespace rules in the Library Fundamentals TS Yes 3 3412⁽ⁱ⁾ Resolved 28.5.2.2 [format.string.std] §[format.string.std] references to "Unicode encoding" unclear Yes 3 3413⁽ⁱ⁾ C++23 6.1.2.8 [fund.ts.v3::propagate_const.modifiers] [fund.ts.v3] propagate_const's swap's noexcept specification needs to be constrained and use a trait Yes 0 3414⁽ⁱ⁾ C++23 13.7 [networking.ts::async.exec.ctx] [networking.ts] service_already_exists has no usable constructors Yes 0 3415⁽ⁱ⁾ NAD 24.5.2.2 [back.insert.iterator] back_insert_iterator fails when a container is also its value type Yes 3416⁽ⁱ⁾ New 22.7.4 [any.class] The Throws: specification of std::any does not mention allocation No 3 3417⁽ⁱ⁾ SG1 32.5.8.2 [atomics.types.operations] Missing volatile atomic deprecations Yes 3 3418⁽ⁱ⁾ New 32.5.9 [atomics.nonmembers] Deprecated free functions in <atomic> Yes 3 3419⁽ⁱ⁾ C++23 26.2 [algorithms.requirements] §[algorithms.requirements]/15 doesn't reserve as many rights as it intends to Yes 0 3420⁽ⁱ⁾ C++23 24.3.2.3 [iterator.traits] cpp17-iterator should check that the type looks like an iterator first Yes 0 3421⁽ⁱ⁾ C++23 18.5.2 [concept.booleantestable] Imperfect ADL emulation for boolean-testable Yes 0 3422⁽ⁱ⁾ C++23 29.5.8.1 [rand.util.seedseq] Issues of seed_seq's constructors Yes 3 3423⁽ⁱ⁾ New 22.7.5 [any.nonmembers] std::any_cast should never return a cv-qualified type Yes 3 3424⁽ⁱ⁾ New 22.5.3.7 [optional.observe] optional::value_or should never return a cv-qualified type Yes 3 3425⁽ⁱ⁾ C++23 32.7.5 [thread.condition.condvarany] condition_variable_any fails to constrain its Lock parameters Yes 0 3426⁽ⁱ⁾ C++23 20.3.1.6 [unique.ptr.special] operator<=>(const unique_ptr<T, D>&, nullptr_t) can't get no satisfaction Yes 0 3427⁽ⁱ⁾ C++23 20.3.2.2.8 [util.smartptr.shared.cmp] operator<=>(const shared_ptr<T>&, nullptr_t) definition ill-formed Yes 0 3428⁽ⁱ⁾ C++23 25.6.3.2 [range.single.view] single_view's in place constructor should be explicit Yes 0 3429⁽ⁱ⁾ New 16.4.5.11 [res.on.requirements] "models" should subsume like "satisfies" Yes 3 3430⁽ⁱ⁾ C++23 31.10.1 [fstream.syn] std::fstream & co. should be constructible from string_view Yes 3 3431⁽ⁱ⁾ WP 23.2.2.4 [container.opt.reqmts] <=> for containers should require three_way_comparable<T> instead of <=> Yes 2 3432⁽ⁱ⁾ C++23 27.3.4 [string.view.comparison] Missing requirement for comparison_category Yes 0 3433⁽ⁱ⁾ C++23 25.5.4.3 [range.subrange.access] subrange::advance(n) has UB when n < 0 Yes 2 3434⁽ⁱ⁾ C++23 31.5.2.8 [ios.base.cons] ios_base never reclaims memory for iarray and parray Yes 3435⁽ⁱ⁾ C++23 24.5.4.4 [move.iter.cons] three_way_comparable_with<reverse_iterator<int*>, reverse_iterator<const int*>> Yes 2 3436⁽ⁱ⁾ WP 26.11.8 [specialized.construct] std::construct_at should support arrays Yes 2 3437⁽ⁱ⁾ C++23 17.3.2 [version.syn] __cpp_lib_polymorphic_allocator is in the wrong header Yes 0 3438⁽ⁱ⁾ New 23.2.5.1 [container.node.overview] §[container.node.overview] missing multiset/map cases No 3 3439⁽ⁱ⁾ New 24.4.3 [iterator.operations] "Distance" template parameter is underspecified No 3 3440⁽ⁱ⁾ NAD 22.4.4.2 [tuple.cnstr] Aggregate-paren-init breaks direct-initializing a tuple or optional from {aggregate-member-value} Yes 2 3441⁽ⁱ⁾ C++23 16.4.5.2.1 [namespace.std] Misleading note about calls to customization points Yes 1 3442⁽ⁱ⁾ Resolved 16.4.5.2.1 [namespace.std] Unsatisfiable suggested implementation of customization points Yes 1 3443⁽ⁱ⁾ C++23 19.2.1 [networking.ts::socket.iostream.cons] [networking.ts] net::basic_socket_iostream should use addressof Yes 0 3444⁽ⁱ⁾ New 19.1.2 [networking.ts::socket.streambuf.members] [networking.ts] net::basic_socket_streambuf::connect(Args&&...) effects are wrong No 2 3445⁽ⁱ⁾ LEWG 19.2.1 [networking.ts::socket.iostream.cons] [networking.ts] net::basic_socket_istream::connect should be constrained Yes 3 3446⁽ⁱ⁾ C++23 24.3.2.2 [readable.traits] indirectly_readable_traits ambiguity for types with both value_type and element_type Yes 2 3447⁽ⁱ⁾ C++23 25.7.10.2 [range.take.view] Deduction guides for take_view and drop_view have different constraints Yes 0 3448⁽ⁱ⁾ C++23 25.7.9.4 [range.transform.sentinel] transform_view's sentinel<false> not comparable with iterator<true> Yes 1 3449⁽ⁱ⁾ C++23 25.7.10.3 [range.take.sentinel] take_view and take_while_view's sentinel<false> not comparable with their const iterator Yes 1 3450⁽ⁱ⁾ C++23 25.7.11.2 [range.take.while.view] The const overloads of take_while_view::begin/end are underconstrained Yes 0 3451⁽ⁱ⁾ New 27.4.3 [basic.string] Inconsistently explicit deduction guides Yes 3 3452⁽ⁱ⁾ Resolved 25.4.5 [range.view] Are views really supposed to have strict 𝒪(1) destruction? Yes 2 3453⁽ⁱ⁾ C++23 24.4.4.2 [range.iter.op.advance] Generic code cannot call ranges::advance(i, s) Yes 2 3454⁽ⁱ⁾ Open 20.2.3 [pointer.traits] pointer_traits::pointer_to should be constexpr Yes 3455⁽ⁱ⁾ C++23 20.3.1.3.4 [unique.ptr.single.asgn] Incorrect Postconditions on unique_ptr move assignment Yes 0 3456⁽ⁱ⁾ New 28.2.3 [charconv.from.chars] Pattern used by std::from_chars is underspecified Yes 3 3457⁽ⁱ⁾ New 27.3.3 [string.view.template] *this is not invalidated Yes 3 3458⁽ⁱ⁾ Resolved 32.10.7 [futures.unique.future] Is shared_future intended to work with arrays or function types? Yes 0 3459⁽ⁱ⁾ New 18.4.4 [concept.convertible] Why doesn't std::convertible_to have semantic requirement when To is reference-to-function type? No 3 3460⁽ⁱ⁾ C++23 17.13.5.2.4 [coroutine.handle.noop.resumption] Unimplementable noop_coroutine_handle guarantees Yes 2 3461⁽ⁱ⁾ C++23 18.4.4 [concept.convertible] convertible_to's description mishandles cv-qualified void Yes 0 3462⁽ⁱ⁾ C++23 28.5.6.1 [formatter.requirements] §[formatter.requirements]: Formatter requirements forbid use of fc.arg() Yes 3 3463⁽ⁱ⁾ New 26.10.11 [transform.inclusive.scan] Incorrect requirements for transform_inclusive_scan without initial value Yes 3 3464⁽ⁱ⁾ C++23 31.7.5.4 [istream.unformatted] istream::gcount() can overflow Yes 0 3465⁽ⁱ⁾ C++23 17.12.6 [cmp.alg] compare_partial_order_fallback requires F < E Yes 0 3466⁽ⁱ⁾ C++23 32.10.6 [futures.promise] Specify the requirements for promise/future/shared_future consistently Yes 3 3467⁽ⁱ⁾ C++23 24.3.4.4 [iterator.concept.winc] bool can't be an integer-like type Yes 0 3468⁽ⁱ⁾ NAD 23.2.8 [unord.req] Transparent lookups in unordered containers are inconsistent Yes 3469⁽ⁱ⁾ Resolved 17.13.4.7 [coroutine.handle.promise] Precondition of coroutine_handle::promise may be insufficient Yes 2 3470⁽ⁱ⁾ C++23 25.5.4 [range.subrange] convertible-to-non-slicing seems to reject valid case Yes 3 3471⁽ⁱ⁾ C++23 20.5 [mem.res] polymorphic_allocator::allocate does not satisfy Cpp17Allocator requirements Yes 3 3472⁽ⁱ⁾ C++23 24.5.7 [iterators.counted] counted_iterator is missing preconditions Yes 3473⁽ⁱ⁾ C++23 28.5.8.3 [format.args] Normative encouragement in non-normative note Yes 0 3474⁽ⁱ⁾ C++23 25.7.14 [range.join] Nesting join_views is broken because of CTAD Yes 3475⁽ⁱ⁾ New 32.4.3.3 [thread.thread.constr] std::thread's constructor needs to be able to report general memory allocation failures Yes 3 3476⁽ⁱ⁾ C++23 32.4.3.3 [thread.thread.constr] thread and jthread constructors require that the parameters be move-constructible but never move construct the parameters Yes 0 3477⁽ⁱ⁾ C++23 25.7.3 [range.move.wrap] Simplify constraints for semiregular-box Yes 0 3478⁽ⁱ⁾ Resolved 25.7.17 [range.split] views::split drops trailing empty range Yes 2 3479⁽ⁱ⁾ Resolved 25.7.3 [range.move.wrap] semiregular-box mishandles self-assignment Yes 3 3480⁽ⁱ⁾ C++23 31.12.11 [fs.class.directory.iterator] directory_iterator and recursive_directory_iterator are not C++20 ranges Yes 3 3481⁽ⁱ⁾ C++23 25.4.6 [range.refinements] viewable_range mishandles lvalue move-only views Yes 2 3482⁽ⁱ⁾ C++23 25.7.12.2 [range.drop.view] drop_view's const begin should additionally require sized_range Yes 0 3483⁽ⁱ⁾ C++23 25.7.9.3 [range.transform.iterator] transform_view::iterator's difference is overconstrained Yes 0 3484⁽ⁱ⁾ New 17.15.7 [support.c.headers.other] Should <stddef.h> declare ::nullptr_t? Yes 3 3485⁽ⁱ⁾ NAD 32.5.7 [atomics.ref.generic] atomic_ref safety should be based on operations that "potentially conflict" rather than lifetime Yes 3 3486⁽ⁱ⁾ LEWG 21.3.6.4 [meta.unary.prop] is_constructible<T[], T...> may be misleading in C++20 No 3487⁽ⁱ⁾ New 26.10 [numeric.ops] Missing precondition on input and output aliasing of [numeric.ops] No 3 3488⁽ⁱ⁾ Open 23.3.3.4 [array.special] Is array<const int, 0> swappable or not? Yes 3 3489⁽ⁱ⁾ New 25.6.6.3 [range.istream.iterator] Improve istream_view wording Yes 3 3490⁽ⁱ⁾ C++23 25.7.13.2 [range.drop.while.view] ranges::drop_while_view::begin() is missing a precondition Yes 0 3491⁽ⁱ⁾ New 17.12.6 [cmp.alg] What is a "decayed type"? No 3 3492⁽ⁱ⁾ C++23 25.7.23.3 [range.elements.iterator] Minimal improvements to elements_view::iterator Yes 0 3493⁽ⁱ⁾ New 22.10.17.3.2 [func.wrap.func.con] The constructor of std::function taking an F is missing a constraint Yes 3 3494⁽ⁱ⁾ C++23 25.7.21 [range.reverse] Allow ranges to be conditionally borrowed Yes 3495⁽ⁱ⁾ C++23 17.6.5 [ptr.launder] constexpr launder makes pointers to inactive members of unions usable Yes 3 3496⁽ⁱ⁾ New 31.11.2.4 [syncstream.syncbuf.members] What does "uniquely associated" mean for basic_syncbuf::emit()? No 3 3497⁽ⁱ⁾ New 31.11.2.4 [syncstream.syncbuf.members] Postconditions for basic_syncbuf::emit() No 3 3498⁽ⁱ⁾ C++23 31.11.2.1 [syncstream.syncbuf.overview] Inconsistent noexcept-specifiers for basic_syncbuf Yes 3 3499⁽ⁱ⁾ New 32.2.5.4 [thread.req.lockable.timed] Timed lockable and mutex requirements are imprecise about duration and time_point No 3 3500⁽ⁱ⁾ C++23 25.7.14.3 [range.join.iterator] join_view::iterator::operator->() is bogus Yes 0 3501⁽ⁱ⁾ New 31.7.6.5 [ostream.manip] basic_syncbuf-related manipulators refer to some Allocator without defining it Yes 3 3502⁽ⁱ⁾ C++23 25.7.23.3 [range.elements.iterator] elements_view should not be allowed to return dangling references Yes 2 3503⁽ⁱ⁾ New 30.5.8 [time.duration.cast] chrono::ceil has surprising requirement Yes 3 3504⁽ⁱ⁾ New 32.7.4 [thread.condition.condvar] condition_variable::wait_for is overspecified Yes 3 3505⁽ⁱ⁾ C++23 25.7.16.3 [range.lazy.split.outer] split_view::outer-iterator::operator++ misspecified Yes 2 3506⁽ⁱ⁾ C++23 23.6.4 [priority.queue] Missing allocator-extended constructors for priority_queue Yes 3 3507⁽ⁱ⁾ Open 19.6.3.4 [stacktrace.entry.query] P0881R7 ("stacktrace") does not define "actual file name", "actual line number" No 2 3508⁽ⁱ⁾ Resolved 32.5.7.1 [atomics.ref.generic.general] atomic_ref<cv T> is not well-specified Yes 2 3509⁽ⁱ⁾ Resolved 25.7.2 [range.adaptor.object] Range adaptor objects are underspecified Yes 2 3510⁽ⁱ⁾ Resolved 16.3.3.3.5 [customization.point.object] Customization point objects should be invocable as non-const too Yes 3 3511⁽ⁱ⁾ New 16.4.5.9 [res.on.arguments] Clarify global permission to move Yes 3 3512⁽ⁱ⁾ New 22.10.19 [unord.hash] Incorrect exception safety guarantee for unordered containers No 3 3513⁽ⁱ⁾ New 3.43 [defns.prog.def.type] Fix definition of program-defined based on its uses Yes 3 3514⁽ⁱ⁾ Resolved 19.6.2 [stacktrace.syn] stacktrace should add type alias pmr::stacktrace Yes 3 3515⁽ⁱ⁾ C++23 19.6.2 [stacktrace.syn] §[stacktrace.basic.nonmem]: operator<< should be less templatized Yes 2 3516⁽ⁱ⁾ New 32.4.3.2 [thread.thread.id] thread::id spaceship may be inconsistent with equality Yes 3 3517⁽ⁱ⁾ C++23 25.7.14.3 [range.join.iterator] join_view::iterator's iter_swap is underconstrained Yes 3518⁽ⁱ⁾ C++23 27.2.2 [char.traits.require] Exception requirements on char trait operations unclear Yes 3519⁽ⁱ⁾ C++23 29.5.4 [rand.eng] Incomplete synopses for <random> classes Yes 3 3520⁽ⁱ⁾ C++23 25.7.9.3 [range.transform.iterator] iter_move and iter_swap are inconsistent for transform_view::iterator Yes 2 3521⁽ⁱ⁾ C++23 26.13 [alg.c.library] Overly strict requirements on qsort and bsearch Yes 3522⁽ⁱ⁾ C++23 23.6.4 [priority.queue] Missing requirement on InputIterator template parameter for priority_queue constructors Yes 3523⁽ⁱ⁾ C++23 25.6.4.2 [range.iota.view] iota_view::sentinel is not always iota_view's sentinel Yes 3524⁽ⁱ⁾ Resolved 25.7 [range.adaptors] Unimplementable narrowing and evaluation order requirements for range adaptors Yes 3 3525⁽ⁱ⁾ C++23 20.2.8.2 [allocator.uses.construction] uses_allocator_construction_args fails to handle types convertible to pair Yes 3 3526⁽ⁱ⁾ C++23 20.2.8.2 [allocator.uses.construction] Return types of uses_allocator_construction_args unspecified Yes 3 3527⁽ⁱ⁾ C++23 20.2.8.2 [allocator.uses.construction] uses_allocator_construction_args handles rvalue pairs of rvalue references incorrectly Yes 3528⁽ⁱ⁾ C++23 22.4.6 [tuple.apply] make_from_tuple can perform (the equivalent of) a C-style cast Yes 3 3529⁽ⁱ⁾ C++23 23.6.4 [priority.queue] priority_queue(first, last) should construct c with (first, last) Yes 3530⁽ⁱ⁾ C++23 22.10.8.8 [comparisons.three.way] BUILTIN-PTR-MEOW should not opt the type out of syntactic checks Yes 3531⁽ⁱ⁾ New 23.4.3.1 [map.overview] LWG 3025 broke previous valid code Yes 3 3532⁽ⁱ⁾ C++23 25.7.16.5 [range.lazy.split.inner] split_view<V, P>::inner-iterator<true>::operator++(int) should depend on Base Yes 3533⁽ⁱ⁾ C++23 25.7.8.3 [range.filter.iterator] Make base() const & consistent across iterator wrappers that supports input_iterators Yes 3534⁽ⁱ⁾ LEWG 26.8.7.4 [set.intersection] ranges::set_intersection and ranges::set_difference algorithm requirements are too strict Yes 3 3535⁽ⁱ⁾ C++23 25.7.14.3 [range.join.iterator] join_view::iterator::iterator_category and ::iterator_concept lie Yes 2 3536⁽ⁱ⁾ C++23 30.5.11 [time.duration.io] Should chrono::from_stream() assign zero to duration for failure? Yes 3537⁽ⁱ⁾ New 24.7 [iterator.range] §[iterator.range] Missing noexcept for std::rbegin/rend for arrays and initializer_list No 3 3538⁽ⁱ⁾ New 16.2 [library.c] §[library.c] C library functions are not addressable No 2 3539⁽ⁱ⁾ C++23 28.5.5 [format.functions] format_to must not copy models of output_iterator<const charT&> Yes 3540⁽ⁱ⁾ C++23 28.5.8.1 [format.arg] §[format.arg] There should be no const in basic_format_arg(const T* p) Yes 3541⁽ⁱ⁾ C++23 24.3.2.2 [readable.traits] indirectly_readable_traits should be SFINAE-friendly for all types Yes 3542⁽ⁱ⁾ C++23 28.5.8.1 [format.arg] basic_format_arg mis-handles basic_string_view with custom traits Yes 3543⁽ⁱ⁾ C++23 24.5.7.1 [counted.iterator] Definition of when counted_iterators refer to the same sequence isn't quite right Yes 3544⁽ⁱ⁾ C++23 28.5.8.2 [format.arg.store] format-arg-store::args is unintentionally not exposition-only Yes 3 3545⁽ⁱ⁾ C++23 20.2.3 [pointer.traits] std::pointer_traits should be SFINAE-friendly Yes 2 3546⁽ⁱ⁾ C++23 24.5.5.5 [common.iter.nav] common_iterator's postfix-proxy is not quite right Yes 3547⁽ⁱ⁾ Resolved 30.12 [time.format] Time formatters should not be locale sensitive by default Yes 2 3548⁽ⁱ⁾ C++23 20.3.2.2.2 [util.smartptr.shared.const] shared_ptr construction from unique_ptr should move (not copy) the deleter Yes 3549⁽ⁱ⁾ C++23 25.5.3 [view.interface] view_interface is overspecified to derive from view_base Yes 2 3550⁽ⁱ⁾ New 16.4.5.3 [reserved.names] Names reserved by C for standard library not reserved by C++ No 3 3551⁽ⁱ⁾ C++23 25.5.5 [range.dangling] borrowed_{iterator,subrange}_t are overspecified Yes 3552⁽ⁱ⁾ C++23 20.2.2 [memory.syn] Parallel specialized memory algorithms should require forward iterators Yes 3553⁽ⁱ⁾ C++23 25.7.16.4 [range.lazy.split.outer.value] Useless constraint in split_view::outer-iterator::value_type::begin() Yes 3554⁽ⁱ⁾ C++23 30.13 [time.parse] chrono::parse needs const charT* and basic_string_view<charT> overloads Yes 2 3555⁽ⁱ⁾ C++23 25.7.9.3 [range.transform.iterator] {transform,elements}_view::iterator::iterator_concept should consider const-qualification of the underlying range Yes 3556⁽ⁱ⁾ New 16.3.2.3 [structure.requirements] Specification of when semantic constraints are imposed by use of concepts is unclear No 3 3557⁽ⁱ⁾ C++23 18.4.4 [concept.convertible] The static_cast expression in convertible_to has the wrong operand Yes 3558⁽ⁱ⁾ NAD Editorial 25.7.23.4 [range.elements.sentinel] elements_view::sentinel's first operator- has wrong return type Yes 3559⁽ⁱ⁾ C++23 25.4.4 [range.sized] Semantic requirements of sized_range is circular Yes 3560⁽ⁱ⁾ C++23 26.6.13 [alg.equal] ranges::equal and ranges::is_permutation should short-circuit for sized_ranges Yes 3561⁽ⁱ⁾ C++23 29.5.5.2 [rand.adapt.disc] Issue with internal counter in discard_block_engine Yes 3562⁽ⁱ⁾ NAD 22.5.5 [optional.nullopt] Superseding nullopt_t's requirement to not be DefaultConstructible Yes 3563⁽ⁱ⁾ C++23 25.7.23.1 [range.elements.overview] keys_view example is broken Yes 3 3564⁽ⁱ⁾ C++23 25.7.9.3 [range.transform.iterator] transform_view::iterator<true>::value_type and iterator_category should use const F& Yes 2 3565⁽ⁱ⁾ Resolved 30.12 [time.format] Handling of encodings in localized formatting of chrono types is underspecified Yes 2 3566⁽ⁱ⁾ C++23 22.5.9 [optional.comp.with.t] Constraint recursion for operator<=>(optional<T>, U) Yes 3567⁽ⁱ⁾ C++23 28.5.6.7 [format.context] Formatting move-only iterators take two Yes 3568⁽ⁱ⁾ C++23 25.6.6.2 [range.istream.view] basic_istream_view needs to initialize value_ Yes 3569⁽ⁱ⁾ C++23 25.7.14.3 [range.join.iterator] join_view fails to support ranges of ranges with non-default_initializable iterators Yes 3 3570⁽ⁱ⁾ C++23 31.11.3.3 [syncstream.osyncstream.members] basic_osyncstream::emit should be an unformatted output function Yes 3571⁽ⁱ⁾ C++23 31.7.6.5 [ostream.manip] flush_emit should set badbit if the emit call fails Yes 3572⁽ⁱ⁾ C++23 25.7.3 [range.move.wrap] copyable-box should be fully constexpr Yes 3573⁽ⁱ⁾ C++23 27.3.3.2 [string.view.cons] Missing Throws element for basic_string_view(It begin, End end) Yes 3574⁽ⁱ⁾ C++23 24.5.5.1 [common.iterator] common_iterator should be completely constexpr-able Yes 3 3575⁽ⁱ⁾ Resolved 24.3.4.4 [iterator.concept.winc] <=> for integer-class types isn't consistently specified Yes 3 3576⁽ⁱ⁾ Resolved 28.5.2.2 [format.string.std] Clarifying fill character in std::format Yes 2 3577⁽ⁱ⁾ New 23.2.7.1 [associative.reqmts.general] Merging an (unordered) associative container with itself No 3 3578⁽ⁱ⁾ WP 23.2.7.1 [associative.reqmts.general] Iterator SCARYness in the context of associative container merging Yes 3 3579⁽ⁱ⁾ NAD 27.4.3.5 [string.capacity] Complexity guarantees for resize() and append() functions across the library Yes 3 3580⁽ⁱ⁾ C++23 25.6.4.3 [range.iota.iterator] iota_view's iterator's binary operator+ should be improved Yes 3581⁽ⁱ⁾ C++23 27.3.3.2 [string.view.cons] The range constructor makes basic_string_view not trivially move constructible Yes 3582⁽ⁱ⁾ New 32.10.9 [futures.async] Unclear where std::async exceptions are handled Yes 3 3583⁽ⁱ⁾ New 22.4.4.2 [tuple.cnstr] Clarify if/when short circuiting applies to conditions in Constraints: elements No 3 3584⁽ⁱ⁾ New 17.12.3 [cmp.common] Clarify common comparison category conversions Yes 3 3585⁽ⁱ⁾ C++23 22.6.3.4 [variant.assign] Variant converting assignment with immovable alternative Yes 3586⁽ⁱ⁾ New 28.5.2.2 [format.string.std] Formatting character alignment inconsistencies Yes 2 3587⁽ⁱ⁾ New 17.12.4 [cmp.concept] std::three_way_comparable_with<T, U, void> can be satisfied but can't be modeled No 3 3588⁽ⁱ⁾ NAD 20.3.1.3.1 [unique.ptr.single.general] Strike out purposeless UB involving the deleter in members functions of unique_ptr Yes 3589⁽ⁱ⁾ C++23 25.5.4 [range.subrange] The const lvalue reference overload of get for subrange does not constrain I to be copyable when N == 0 Yes 3 3590⁽ⁱ⁾ C++23 25.7.17.2 [range.split.view] split_view::base() const & is overconstrained Yes 3591⁽ⁱ⁾ C++23 25.7.16.5 [range.lazy.split.inner] lazy_split_view<input_view>::inner-iterator::base() && invalidates outer iterators Yes 3592⁽ⁱ⁾ C++23 25.7.16.2 [range.lazy.split.view] lazy_split_view needs to check the simpleness of Pattern Yes 3593⁽ⁱ⁾ C++23 24.5.4 [move.iterators] Several iterators' base() const & and lazy_split_view::outer-iterator::value_type::end() missing noexcept Yes 3594⁽ⁱ⁾ C++23 20.3.4.3 [inout.ptr.t] inout_ptr — inconsistent release() in destructor Yes 1 3595⁽ⁱ⁾ C++23 24.5.5.4 [common.iter.access] Exposition-only classes proxy and postfix-proxy for common_iterator should be fully constexpr Yes 3596⁽ⁱ⁾ NAD 26.6.16 [alg.starts.with] ranges::starts_with and ranges::ends_with are underspecified Yes 3597⁽ⁱ⁾ C++23 25.6.4.2 [range.iota.view] Unsigned integer types don't model advanceable Yes 3 3598⁽ⁱ⁾ C++23 19.5.3.5 [syserr.errcat.objects] system_category().default_error_condition(0) is underspecified Yes 3599⁽ⁱ⁾ New 25.7.16.2 [range.lazy.split.view] The const overload of lazy_split_view::begin should be constrained by const Pattern Yes 3 3600⁽ⁱ⁾ C++23 24.6.2.2 [istream.iterator.cons] Making istream_iterator copy constructor trivial is an ABI break Yes 3 3601⁽ⁱ⁾ C++23 24.5.5.5 [common.iter.nav] common_iterator's postfix-proxy needs indirectly_readable Yes 3602⁽ⁱ⁾ New 24.5.1.4 [reverse.iter.cons] reverse_iterator's converting assignment is overconstrained Yes 3 3603⁽ⁱ⁾ New 28.6.7.2 [re.regex.construct] Matching of null characters by regular expressions is underspecified No 3 3604⁽ⁱ⁾ New 28.6.7.2 [re.regex.construct] What is the effect of an invalid value of type syntax_option_type? No 3 3605⁽ⁱ⁾ New 28.6.4.3 [re.matchflag] regex_constants::match_prev_avail is underspecified No 3 3606⁽ⁱ⁾ New 28.6.2 [re.req] Missing regex_traits::locale_type requirements No 3 3607⁽ⁱ⁾ C++23 24.3.4.14 [iterator.concept.contiguous] contiguous_iterator should not be allowed to have custom iter_move and iter_swap behavior Yes 3608⁽ⁱ⁾ New 18.4.4 [concept.convertible] convertible_to and temporary-bound references No 3 3609⁽ⁱ⁾ New 25.6.4.4 [range.iota.sentinel] std::ranges::iota_view<int, long> has non-subtractable iterator and sentinel types Yes 3 3610⁽ⁱ⁾ C++23 25.6.4.2 [range.iota.view] iota_view::size sometimes rejects integer-class types Yes 3611⁽ⁱ⁾ NAD 32.5.8.2 [atomics.types.operations] Should compare_exchange be allowed to modify the expected value on success? Yes 2 3612⁽ⁱ⁾ C++23 28.5.2.2 [format.string.std] Inconsistent pointer alignment in std::format Yes 3613⁽ⁱ⁾ New 22.5.5 [optional.nullopt] Specify that nullopt_t is copyable Yes 3 3614⁽ⁱ⁾ New 25.6.4.2 [range.iota.view] iota_view::size and the most negative signed integer values Yes 3 3615⁽ⁱ⁾ New 24.3.2.1 [incrementable.traits] The last specialization of incrementable_traits has wrong operand types Yes 3 3616⁽ⁱ⁾ C++23 31.11.2.6 [syncstream.syncbuf.special] LWG 3498 seems to miss the non-member swap for basic_syncbuf Yes 3617⁽ⁱ⁾ C++23 22.10.17.3.2 [func.wrap.func.con] function/packaged_task deduction guides and deducing this Yes 2 3618⁽ⁱ⁾ C++23 25.7.9.3 [range.transform.iterator] Unnecessary iter_move for transform_view::iterator Yes 3619⁽ⁱ⁾ C++23 28.5.5 [format.functions] Specification of vformat_to contains ill-formed formatted_size calls Yes 3620⁽ⁱ⁾ New 16.3.3.3.4.1 [character.seq.general] What are execution character sets and execution wide-character sets (after P2314R4)? No 3 3621⁽ⁱ⁾ C++23 17.3.2 [version.syn] Remove feature-test macro __cpp_lib_monadic_optional Yes 3622⁽ⁱ⁾ C++23 23.2.8.1 [unord.req.general] Misspecified transitivity of equivalence in §[unord.req.general] Yes 2 3623⁽ⁱ⁾ New 24.5.1.1 [reverse.iterators.general] Uses of std::reverse_iterator with containers should not require manually including <iterator> Yes 3 3624⁽ⁱ⁾ New 17.7 [support.rtti] Inconsistency of <typeinfo>, <initializer_list>, and <compare> in the standard library Yes 3 3625⁽ⁱ⁾ New 19.6.2 [stacktrace.syn] Should <stacktrace> provide range access function templates? Yes 3 3626⁽ⁱ⁾ New 19.6.4.1 [stacktrace.basic.overview] Is std::basic_stacktrace required to use contiguous storage? Yes 3 3627⁽ⁱ⁾ New 22.5.10 [optional.specalg] Inconsistent specifications for std::make_optional overloads Yes 3 3628⁽ⁱ⁾ New 26.11 [specialized.algorithms] "Effects: Equivalent to:" and uninitialized memory algorithms No 3 3629⁽ⁱ⁾ C++23 19.5 [syserr] make_error_code and make_error_condition are customization points Yes 2 3630⁽ⁱ⁾ New 28.6.7.2 [re.regex.construct] Inconsistent basic_regex construction and assignment from iterator range No 4 3631⁽ⁱ⁾ C++23 28.5.8.1 [format.arg] basic_format_arg(T&&) should use remove_cvref_t<T> throughout Yes 3 3632⁽ⁱ⁾ C++23 20.3.1.3.2 [unique.ptr.single.ctor] unique_ptr "Mandates: This constructor is not selected by class template argument deduction" Yes 3633⁽ⁱ⁾ New 32.5 [atomics] Atomics are copy constructible and copy assignable from volatile atomics Yes 3 3634⁽ⁱ⁾ New 20.5.4 [mem.res.global] When are static-duration memory_resource objects destroyed? No 3 3635⁽ⁱ⁾ NAD 17.3.2 [version.syn] Add __cpp_lib_deduction_guides to feature test macros Yes 3 3636⁽ⁱ⁾ C++23 28.5.6.1 [formatter.requirements] formatter<T>::format should be const-qualified Yes 1 3637⁽ⁱ⁾ New 20.5.2 [mem.res.class] pmr::memory_resource::do_allocate needs clarification No 3 3638⁽ⁱ⁾ New 23.3.14 [vector.bool] vector<bool>::swap(reference, reference) is useless Yes 3 3639⁽ⁱ⁾ Resolved 28.5.2.2 [format.string.std] Handling of fill character width is underspecified in std::format Yes 3 3640⁽ⁱ⁾ New 16.4.4 [utility.requirements] Clarify which exceptions are propagated Yes 3 3641⁽ⁱ⁾ New 28.5.1 [format.syn] Add operator== to format_to_n_result Yes 3 3642⁽ⁱ⁾ New 22.10.17.4.3 [func.wrap.move.ctor] move_only_function assignment operators seem to be defined suboptimal Yes 3 3643⁽ⁱ⁾ C++23 24.5.7.5 [counted.iter.nav] Missing constexpr in std::counted_iterator Yes 3644⁽ⁱ⁾ New 28.5.2.2 [format.string.std] std::format does not define "integer presentation type" Yes 2 3645⁽ⁱ⁾ C++23 27.4.3.5 [string.capacity] resize_and_overwrite is overspecified to call its callback with lvalues Yes 2 3646⁽ⁱ⁾ C++23 25.5.3.1 [view.interface.general] std::ranges::view_interface::size returns a signed type Yes 3 3647⁽ⁱ⁾ New 26.11.2 [special.mem.concepts] nothrow-input-iterator constraints should not mention copying Yes 3 3648⁽ⁱ⁾ C++23 28.5.2.2 [format.string.std] format should not print bool with 'c' Yes 3649⁽ⁱ⁾ TS 4.2 [fund.ts.v3::general.feature.test] [fund.ts.v3] Reinstate and bump __cpp_lib_experimental_memory_resource feature test macro Yes 3650⁽ⁱ⁾ C++23 27.4.3.1 [basic.string.general] Are std::basic_string's iterator and const_iterator constexpr iterators? Yes 3651⁽ⁱ⁾ New 28.5 [format] Unspecified lifetime guarantees for the format string No 3 3652⁽ⁱ⁾ NAD 17.14.3 [csetjmp.syn] Can we relax the preconditions of longjmp? Yes 3653⁽ⁱ⁾ New 17.13.2 [coroutine.syn] <coroutine> is freestanding, but uses std::hash which is not No 3 3654⁽ⁱ⁾ C++23 28.5.6.7 [format.context] basic_format_context::arg(size_t) should be noexcept Yes 3655⁽ⁱ⁾ C++23 22.10.4 [func.require] The INVOKE operation and union types Yes 3 3656⁽ⁱ⁾ C++23 22.11.5 [bit.pow.two] Inconsistent bit operations returning a count Yes 3 3657⁽ⁱ⁾ C++23 31.12.6 [fs.class.path] std::hash<std::filesystem::path> is not enabled Yes 3658⁽ⁱ⁾ New 31.6.3.3.5 [streambuf.pub.put] basic_streambuf::sputn is both overspecified and underspecified Yes 3 3659⁽ⁱ⁾ C++23 32.5.10 [atomics.flag] Consider ATOMIC_FLAG_INIT undeprecation Yes 3 3660⁽ⁱ⁾ C++23 24.5.5.2 [common.iter.types] iterator_traits<common_iterator>::pointer should conform to §[iterator.traits] Yes 3661⁽ⁱ⁾ C++23 32.5.8.7.2 [util.smartptr.atomic.shared] constinit atomic<shared_ptr<T>> a(nullptr); should work Yes 3662⁽ⁱ⁾ New 27.4.3.7.2 [string.append] basic_string::append/assign(NTBS, pos, n) suboptimal Yes 3 3663⁽ⁱ⁾ New 27.4.3.3 [string.cons] basic_string(const T&, const Alloc&) turns moves into copies Yes 3 3664⁽ⁱ⁾ C++23 24.4.4.3 [range.iter.op.distance] LWG 3392 broke std::ranges::distance(a, a+3) Yes 2 3665⁽ⁱ⁾ New 20.2.9.2 [allocator.traits.types] Is std::allocator_traits<Alloc>::rebind_alloc SFINAE-friendly? No 3 3666⁽ⁱ⁾ New 25.7.14 [range.join] join_view's difference type is too small No 2 3667⁽ⁱ⁾ NAD 31.7.6.3 [ostream.formatted] std::cout << &X::f prints 1 Yes 3668⁽ⁱ⁾ New 31.12.11.2 [fs.dir.itr.members] [recursive_]directory_iterator constructors refer to undefined options Yes 3 3669⁽ⁱ⁾ New 4.1.2 [intro.abstract] std::filesystem operations should be observable behaviour No 3 3670⁽ⁱ⁾ C++23 25.6.4.3 [range.iota.iterator] Cpp17InputIterators don't have integer-class difference types Yes 3671⁽ⁱ⁾ C++23 32.5.12 [stdatomic.h.syn] atomic_fetch_xor missing from stdatomic.h Yes 3672⁽ⁱ⁾ C++23 24.5.5.4 [common.iter.access] common_iterator::operator->() should return by value Yes 3673⁽ⁱ⁾ Resolved 28.3.3.1.3 [locale.cons] §[locale.cons] Ambiguous argument in Throws for locale+name+category constructor Yes 3 3674⁽ⁱ⁾ New 28.3.3.1.4 [locale.members] Removal of requirement for locale names for construction of locales not explained Yes 2 3675⁽ⁱ⁾ New 31.5.2.6 [ios.base.storage] std::ios_base::iword/pword might be misspecified Yes 4 3676⁽ⁱ⁾ Resolved 28.3.3.1.3 [locale.cons] Name of locale composed using std::locale::none Yes 3 3677⁽ⁱ⁾ C++23 20.2.8.2 [allocator.uses.construction] Is a cv-qualified pair specially handled in uses-allocator construction? Yes 2 3678⁽ⁱ⁾ New 30.11.5.1 [time.zone.overview] Constructors of std::chrono::time_zone might be overly unspecified Yes 4 3679⁽ⁱ⁾ LEWG 25.6.6 [range.istream] Is <ranges> sufficient for istream_view? No 3 3680⁽ⁱ⁾ New 22.10.17.4.3 [func.wrap.move.ctor] Constructor of move_only_function with empty ref-qualifier is over-constrained Yes 2 3681⁽ⁱ⁾ New 20.5.1 [mem.res.syn] Further considerations on LWG 3679 No 4 3682⁽ⁱ⁾ New 16.4.4.6.1 [allocator.requirements.general] A Cpp17Allocator type can't silently ignore an unsupported alignment No 3 3683⁽ⁱ⁾ C++23 20.5.3 [mem.poly.allocator.class] operator== for polymorphic_allocator cannot deduce template argument in common cases Yes 3684⁽ⁱ⁾ New 20.2.10.2 [allocator.members] std::allocator<T>::allocate_at_least in constant evaluation Yes 3 3685⁽ⁱ⁾ New 25.7.16.2 [range.lazy.split.view] In lazy_split_view, CTAD doesn't work when given an input_range input and a tiny-range pattern Yes 3 3686⁽ⁱ⁾ New 25.7.16.3 [range.lazy.split.outer] In lazy_split_view, comparing a default-constructed outer-iterator or inner-iterator with std::default_sentinel results in null pointer dereference Yes 3 3687⁽ⁱ⁾ C++23 22.8.7.4 [expected.void.assign] expected<cv void, E> move constructor should move Yes 3688⁽ⁱ⁾ New 22.8.4 [expected.bad] Exception specifications of copy/move member functions of std::bad_expected_access No 2 3689⁽ⁱ⁾ New 28.3.4.3.2.3 [facet.num.get.virtuals] num_get overflow determination unclear and incorrect No 3 3690⁽ⁱ⁾ New 16.4.2.2 [contents] std::make_from_tuple etc. should find all tuple-like std::get overloads Yes 3 3691⁽ⁱ⁾ New 23.2.7.1 [associative.reqmts.general] Replacement of keys in associative containers Yes 3 3692⁽ⁱ⁾ C++23 25.7.25.3 [range.zip.iterator] zip_view::iterator's operator<=> is overconstrained Yes 3693⁽ⁱ⁾ New 29.7 [c.math] §[c.math] Can any of float/double/long double overloads be fused into template overloads? No 2 3694⁽ⁱ⁾ New 27.2.2 [char.traits.require] Should traits_type::length be customizable? No 4 3695⁽ⁱ⁾ NAD 27.1 [strings.general] The standard-layout property of char-like types serves for nothing Yes 4 3696⁽ⁱ⁾ New 31.2.2 [stream.types] "Basic integral types" should not be used Yes 3 3697⁽ⁱ⁾ New 21.3.6.4 [meta.unary.prop] Preconditions of reference_constructs_from_temporary/reference_converts_from_temporary seem wrong Yes 3 3698⁽ⁱ⁾ Resolved 28.6.11 [re.iter] regex_iterator and join_view don't work together very well Yes 2 3699⁽ⁱ⁾ New 31.12.6.5.11 [fs.path.gen] lexically_relative on UNC drive paths (\\?\C:\...) results in a default-constructed value No 3 3700⁽ⁱ⁾ Resolved 25.7.14.2 [range.join.view] The const begin of the join_view family does not require InnerRng to be a range Yes 3 3701⁽ⁱ⁾ C++23 28.5.6.4 [format.formatter.spec] Make formatter<remove_cvref_t<const charT[N]>, charT> requirement explicit Yes 3702⁽ⁱ⁾ C++23 25.7.26.3 [range.zip.transform.iterator] Should zip_transform_view::iterator remove operator<? Yes 3703⁽ⁱ⁾ C++23 22.8.7.1 [expected.void.general] Missing requirements for expected<T, E> requires is_void<T> Yes 2 3704⁽ⁱ⁾ C++23 23.4.6.1 [set.overview] LWG 2059 added overloads that might be ill-formed for sets Yes 3705⁽ⁱ⁾ C++23 27.4.6 [basic.string.hash] Hashability shouldn't depend on basic_string's allocator Yes 3706⁽ⁱ⁾ New 28.5.6.4 [format.formatter.spec] How does std::format work with character arrays of unknown bound? No 3 3707⁽ⁱ⁾ C++23 25.7.29.4 [range.chunk.outer.value] chunk_view::outer-iterator::value_type::size should return unsigned type Yes 3708⁽ⁱ⁾ C++23 25.7.11.3 [range.take.while.sentinel] take_while_view::sentinel's conversion constructor should move Yes 3709⁽ⁱ⁾ C++23 22.5.3.1 [optional.optional.general] LWG-3703 was underly ambitious Yes 3710⁽ⁱ⁾ C++23 25.7.29.2 [range.chunk.view.input] The end of chunk_view for input ranges can be const Yes 3711⁽ⁱ⁾ C++23 25.7.30.2 [range.slide.view] Missing preconditions for slide_view constructor Yes 3712⁽ⁱ⁾ C++23 25.7.29.2 [range.chunk.view.input] chunk_view and slide_view should not be default_initializable Yes 3713⁽ⁱ⁾ C++23 26.8.1 [alg.sorting.general] Sorted with respect to comparator (only) Yes 3714⁽ⁱ⁾ NAD 25.7.26.2 [range.zip.transform.view] Non-single-argument constructors for range adaptors should not be explicit Yes 4 3715⁽ⁱ⁾ C++23 25.5.3.1 [view.interface.general] view_interface::empty is overconstrained Yes 3716⁽ⁱ⁾ New 24.3.4.11 [iterator.concept.forward] §[iterator.concept.forward][forward.iterators] Two different definitions of multi-pass guarantee No 3 3717⁽ⁱ⁾ C++23 25.7.20.2 [range.common.view] common_view::end should improve random_access_range case Yes 3 3718⁽ⁱ⁾ Resolved 28.5.8.1 [format.arg] P2418R2 broke the overload resolution for std::basic_format_arg Yes 2 3719⁽ⁱ⁾ C++23 31.12.11.1 [fs.class.directory.iterator.general] Directory iterators should be usable with default sentinel Yes 3720⁽ⁱ⁾ C++23 28.5.2.2 [format.string.std] Restrict the valid types of arg-id for width and precision in std-format-spec Yes 2 3721⁽ⁱ⁾ C++23 28.5.2.2 [format.string.std] Allow an arg-id with a value of zero for width in std-format-spec Yes 3 3722⁽ⁱ⁾ New 25.5.7.2 [range.utility.conv.to] ranges::to reserves the wrong size Yes 4 3723⁽ⁱ⁾ C++23 23.6.4.4 [priqueue.members] priority_queue::push_range needs to append_range Yes 2 3724⁽ⁱ⁾ C++23 16.3.3.2 [expos.only.entity] decay-copy should be constrained Yes 3 3725⁽ⁱ⁾ New 24.5.1.6 [reverse.iter.elem] reverse_iterator::operator-> should not use prev for non-pointer iterators Yes 3 3726⁽ⁱ⁾ NAD 24.5.1.6 [reverse.iter.elem] reverse_iterator::operator-> is underconstrained for non-pointer iterators Yes 3727⁽ⁱ⁾ NAD 24.5.1.6 [reverse.iter.elem] reverse_iterator/common_iterator's operator-> should not require the underlying iterator's operator-> to be a const member function Yes 3728⁽ⁱ⁾ New 22.4.9 [tuple.rel] Can't make neither head nor tail of the description of operator<=>(tuple, tuple) Yes 4 3729⁽ⁱ⁾ New 25.2 [ranges.syn] std::tuple_element_t<std::ranges::subrange<I, S, K>> should remove top-level cv-qualifiers Yes 4 3730⁽ⁱ⁾ New 25.7.12.2 [range.drop.view] std::ranges::drop_view may have different size type from its underlying view Yes 3 3731⁽ⁱ⁾ New 25.7.25.2 [range.zip.view] zip_view and adjacent_view are underconstrained Yes 3 3732⁽ⁱ⁾ C++23 23.2.4 [sequence.reqmts] prepend_range and append_range can't be amortized constant time Yes 3733⁽ⁱ⁾ C++23 25.5.7.2 [range.utility.conv.to] ranges::to misuses cpp17-input-iterator Yes 2 3734⁽ⁱ⁾ C++23 20.3.4.1 [out.ptr.t] Inconsistency in inout_ptr and out_ptr for empty case Yes 2 3735⁽ⁱ⁾ NAD 25.7.27.1 [range.adjacent.overview] views::adjacent<0> should be prohibited Yes 3736⁽ⁱ⁾ C++23 24.2 [iterator.synopsis] move_iterator missing disable_sized_sentinel_for specialization Yes 3737⁽ⁱ⁾ C++23 25.7.10.3 [range.take.sentinel] take_view::sentinel should provide operator- Yes 3 3738⁽ⁱ⁾ C++23 25.7.10.2 [range.take.view] Missing preconditions for take_view constructor Yes 3739⁽ⁱ⁾ NAD 25.7.29.2 [range.chunk.view.input] chunk_view::size should preserve the signedness of the size of the underlying range Yes 3740⁽ⁱ⁾ NAD 25.7.30.2 [range.slide.view] slide_view::size should preserve the signedness of underlying range's size Yes 3741⁽ⁱ⁾ NAD 30.5.10 [time.duration.alg] std::chrono::abs(duration) is ill-formed with non-reduced periods Yes 3742⁽ⁱ⁾ C++23 23.2.4 [sequence.reqmts] deque::prepend_range needs to permute Yes 2 3743⁽ⁱ⁾ C++23 25.5.7.2 [range.utility.conv.to] ranges::to's reserve may be ill-formed Yes 3744⁽ⁱ⁾ New 31.12.13.6 [fs.op.copy.symlink] copy_symlink(junction, new_symlink)'s behavior is unclear No 3 3745⁽ⁱ⁾ C++23 32.5.2 [atomics.syn] std::atomic_wait and its friends lack noexcept Yes 3746⁽ⁱ⁾ C++23 22.5.9 [optional.comp.with.t] optional's spaceship with U with a type derived from optional causes infinite constraint meta-recursion Yes 3747⁽ⁱ⁾ C++23 26.11.5 [uninitialized.copy] ranges::uninitialized_copy_n, ranges::uninitialized_move_n, and ranges::destroy_n should use std::move Yes 3748⁽ⁱ⁾ New 24.5.5.6 [common.iter.cmp] common_iterator and counted_iterator' operator- are missing cast to return type Yes 3 3749⁽ⁱ⁾ WP 24.5.5 [iterators.common] common_iterator should handle integer-class difference types Yes 2 3750⁽ⁱ⁾ C++23 17.3.2 [version.syn] Too many papers bump __cpp_lib_format Yes 3751⁽ⁱ⁾ C++23 17.3.2 [version.syn] Missing feature macro for flat_set Yes 3752⁽ⁱ⁾ NAD 27.4.3.8.3 [string.substr] Should string::substr forward the allocator to the newly created string? Yes 3753⁽ⁱ⁾ C++23 16.3.3.7 [freestanding.item] Clarify entity vs. freestanding entity Yes 2 3754⁽ⁱ⁾ C++23 22.8.6.1 [expected.object.general] Class template expected synopsis contains declarations that do not match the detailed description Yes 3755⁽ⁱ⁾ C++23 25.7.25.2 [range.zip.view] tuple-for-each can call user-defined operator, Yes 3756⁽ⁱ⁾ C++23 17.14.5 [support.signal] Is the std::atomic_flag class signal-safe? Yes 3 3757⁽ⁱ⁾ C++23 22.2.4 [forward] What's the effect of std::forward_like<void>(x)? Yes 3758⁽ⁱ⁾ New 23.3.13.3 [vector.capacity] Element-relocating operations of std::vector and std::deque should conditionally require Cpp17CopyInsertable in their preconditions No 3 3759⁽ⁱ⁾ C++23 26.7.11 [alg.rotate] ranges::rotate_copy should use std::move Yes 3760⁽ⁱ⁾ C++23 25.7.33 [range.cartesian] cartesian_product_view::iterator's parent_ is never valid Yes 3761⁽ⁱ⁾ C++23 25.7.33.3 [range.cartesian.iterator] cartesian_product_view::iterator::operator- should pass by reference Yes 3762⁽ⁱ⁾ C++23 25.8.6 [coro.generator.iterator] generator::iterator::operator== should pass by reference Yes 3763⁽ⁱ⁾ New 25.6.5.3 [range.repeat.iterator] Should range adaptor iterators only provide iterator_category when its difference_type is not an integer-class type? Yes 3 3764⁽ⁱ⁾ C++23 22.10.6.5 [refwrap.invoke] reference_wrapper::operator() should propagate noexcept Yes 3765⁽ⁱ⁾ C++23 24.2 [iterator.synopsis] const_sentinel should be constrained Yes 3766⁽ⁱ⁾ C++23 25.5.3.1 [view.interface.general] view_interface::cbegin is underconstrained Yes 2 3767⁽ⁱ⁾ WP 28.3.3.1.2.1 [locale.category] codecvt<charN_t, char8_t, mbstate_t> incorrectly added to locale Yes 3 3768⁽ⁱ⁾ NAD 25.2 [ranges.syn] possibly-const-range is overconstrained Yes 3769⁽ⁱ⁾ C++23 24.5.3 [const.iterators] basic_const_iterator::operator== causes infinite constraint recursion Yes 1 3770⁽ⁱ⁾ C++23 25.2 [ranges.syn] const_sentinel_t is missing Yes 3 3771⁽ⁱ⁾ C++23 7.2.1 [fund.ts.v3::func.wrap.func.overview] [fund.ts.v3] remove binders typedefs from function Yes 3772⁽ⁱ⁾ C++23 25.6.5.2 [range.repeat.view] repeat_view's piecewise constructor is missing Postconditions Yes 2 3773⁽ⁱ⁾ C++23 25.7.26.1 [range.zip.transform.overview] views::zip_transform still requires F to be copy_constructible when empty pack Yes 3774⁽ⁱ⁾ C++23 23.6.10 [flat.set.syn] <flat_set> should include <compare> Yes 3775⁽ⁱ⁾ C++23 16.4.4.6.1 [allocator.requirements.general] Broken dependencies in the Cpp17Allocator requirements Yes 3776⁽ⁱ⁾ NAD 28.5.6.1 [formatter.requirements] Avoid parsing format-spec if it is not present or empty Yes 3 3777⁽ⁱ⁾ Open 25.7.33.2 [range.cartesian.view] Common cartesian_product_view produces an invalid range if the first range is input and one of the ranges is empty Yes 2 3778⁽ⁱ⁾ C++23 23.3.14.1 [vector.bool.pspc] vector<bool> missing exception specifications Yes 3779⁽ⁱ⁾ NAD 26.6.18 [alg.fold] ranges::fold_* can unintentionally const_cast and reinterpret_cast Yes 3780⁽ⁱ⁾ Resolved 28.5.2.2 [format.string.std] format's width estimation is too approximate and not forward compatible Yes 3 3781⁽ⁱ⁾ C++23 23.6.1 [container.adaptors.general] The exposition-only alias templates cont-key-type and cont-mapped-type should be removed Yes 3782⁽ⁱ⁾ C++23 17.15.7 [support.c.headers.other] Should <math.h> declare ::lerp? Yes 3783⁽ⁱ⁾ New 24.5.5.1 [common.iterator] views::common may not be a range adaptor object Yes 3 3784⁽ⁱ⁾ C++23 16.4.2.4 [std.modules] std.compat should not provide ::byte and its friends Yes 3785⁽ⁱ⁾ C++23 25.5.7.2 [range.utility.conv.to] ranges::to is over-constrained on the destination type being a range Yes 3786⁽ⁱ⁾ C++23 23.6.8.2 [flat.map.defn] Flat maps' deduction guide needs to default Allocator to be useful Yes 2 3787⁽ⁱ⁾ Resolved 25.5.7.2 [range.utility.conv.to] ranges::to's template parameter C should not be a reference type Yes 3 3788⁽ⁱ⁾ C++23 32.4.4.2 [thread.jthread.cons] jthread::operator=(jthread&&) postconditions are unimplementable under self-assignment Yes 3 3789⁽ⁱ⁾ NAD 17.6.3.3 [new.delete.array] Precondition of (not replaced) operator delete[] Yes 3790⁽ⁱ⁾ C++23 29.7.1 [cmath.syn] P1467 accidentally changed nexttoward's signature Yes 1 3791⁽ⁱ⁾ Resolved 25.7.14.3 [range.join.iterator] join_view::iterator::operator-- may be ill-formed Yes 3 3792⁽ⁱ⁾ C++23 17.3.2 [version.syn] __cpp_lib_constexpr_algorithms should also be defined in <utility> Yes 3793⁽ⁱ⁾ New 26.6.5 [alg.foreach] Requirements for some algorithms' Size template parameters are unclear No 3 3794⁽ⁱ⁾ New 31.12.6.6 [fs.path.itr] std::filesystem::path::iterator::reference should be allowed to be std::filesystem::path Yes 3 3795⁽ⁱ⁾ C++23 32.10.7 [futures.unique.future] Self-move-assignment of std::future and std::shared_future have unimplementable postconditions Yes 3 3796⁽ⁱ⁾ C++23 25.6.5.2 [range.repeat.view] movable-box as member should use default-initialization instead of copy-initialization Yes 3797⁽ⁱ⁾ New 25.7.23.2 [range.elements.view] elements_view insufficiently constrained Yes 2 3798⁽ⁱ⁾ C++23 24.3.2.3 [iterator.traits] Rvalue reference and iterator_category Yes 3799⁽ⁱ⁾ New 17.15.7 [support.c.headers.other] Should <math.h> provide 3-argument ::hypot overloads? No 3 3800⁽ⁱ⁾ NAD 28.6.9.1 [re.results.general] No deduction guide for std::match_results Yes 3801⁽ⁱ⁾ C++23 25.7.33.3 [range.cartesian.iterator] cartesian_product_view::iterator::distance-from ignores the size of last underlying range Yes 3802⁽ⁱ⁾ New 23.6.8 [flat.map] flat_foo allocator-extended constructors lack move semantics No 2 3803⁽ⁱ⁾ C++23 23.6.8 [flat.map] flat_foo constructors taking KeyContainer lack KeyCompare parameter Yes 1 3804⁽ⁱ⁾ New 23.6.8 [flat.map] flat_foo missing some allocator-extended deduction guides No 2 3805⁽ⁱ⁾ New 22.10 [function.objects] Expression evaluating to a call wrapper is a prvalue, not an object No 4 3806⁽ⁱ⁾ NAD 28.5.6.3 [format.formattable] Should concept formattable<T, charT> default to char? Yes 2 3807⁽ⁱ⁾ C++23 17.3.2 [version.syn] The feature test macro for ranges::find_last should be renamed Yes 3808⁽ⁱ⁾ NAD 17.3.2 [version.syn] Inconsistent feature test macros for ranges algorithms Yes 3809⁽ⁱ⁾ WP 29.5.4.4 [rand.eng.sub] Is std::subtract_with_carry_engine<uint16_t> supposed to work? Yes 3 3810⁽ⁱ⁾ C++23 28.5.8.3 [format.args] CTAD for std::basic_format_args Yes 3 3811⁽ⁱ⁾ C++23 25.7.22.1 [range.as.const.overview] views::as_const on ref_view<T> should return ref_view<const T> Yes 3812⁽ⁱ⁾ New 6.1.2.6 [fund.ts.v3::propagate_const.const_observers] [fund.ts.v3] Incorrect constraint on propagate_const conversion function Yes 3 3813⁽ⁱ⁾ New 23.7.2.2.1 [span.overview] std::span<volatile T, E> is made ill-formed by P2278R4 when T is a normal class type Yes 2 3814⁽ⁱ⁾ C++23 20.2.2 [memory.syn] Add freestanding items requested by NB comments Yes 3815⁽ⁱ⁾ Resolved 16.3.3.7 [freestanding.item] Freestanding enumerators specification is lacking Yes 3816⁽ⁱ⁾ C++23 23.6.8.1 [flat.map.overview] flat_map and flat_multimap should impose sequence container requirements Yes 3817⁽ⁱ⁾ C++23 23.3.7.5 [forward.list.modifiers] Missing preconditions on forward_list modifiers Yes 3818⁽ⁱ⁾ C++23 16.3.3 [conventions] Exposition-only concepts are not described in library intro Yes 3819⁽ⁱ⁾ C++23 21.3.6.4 [meta.unary.prop] reference_meows_from_temporary should not use is_meowible Yes 3820⁽ⁱ⁾ C++23 25.7.33.3 [range.cartesian.iterator] cartesian_product_view::iterator::prev is not quite right Yes 3821⁽ⁱ⁾ C++23 20.2.8.2 [allocator.uses.construction] uses_allocator_construction_args should have overload for pair-like Yes 2 3822⁽ⁱ⁾ C++23 31.12.13.40 [fs.op.weakly.canonical] Avoiding normalization in filesystem::weakly_canonical Yes 3823⁽ⁱ⁾ C++23 21.3.6.4 [meta.unary.prop] Unnecessary precondition for is_aggregate Yes 3824⁽ⁱ⁾ C++23 22.10.15.5 [func.bind.place] Number of bind placeholders is underspecified Yes 3825⁽ⁱ⁾ C++23 28.5.6.6 [format.parse.ctx] Missing compile-time argument id check in basic_format_parse_context::next_arg_id Yes 3826⁽ⁱ⁾ C++23 25.8.5 [coro.generator.promise] Redundant specification [for overload of yield_value] Yes 3827⁽ⁱ⁾ C++23 17.15.4 [stdalign.h.syn] Deprecate <stdalign.h> and <stdbool.h> macros Yes 3828⁽ⁱ⁾ C++23 17.4.1 [cstdint.syn] Sync intmax_t and uintmax_t with C2x Yes 3829⁽ⁱ⁾ New 25.7.7.2 [range.as.rvalue.view] as_rvalue_view::end should improve non-common case Yes 3 3830⁽ⁱ⁾ New 25.7.21.2 [range.reverse.view] reverse_view should not cache when ranges::next has constant time complexity Yes 3 3831⁽ⁱ⁾ New 30.12 [time.format] Two-digit formatting of negative year is ambiguous Yes 3 3832⁽ⁱ⁾ New 25.7.23.3 [range.elements.iterator] Missing change for element_view::iterator in LWG 3798 Yes 3 3833⁽ⁱ⁾ C++23 28.5.6.4 [format.formatter.spec] Remove specialization template<size_t N> struct formatter<const charT[N], charT> Yes 2 3834⁽ⁱ⁾ C++23 31.13.2 [cinttypes.syn] Missing constexpr for std::intmax_t math functions in <cinttypes> Yes 3835⁽ⁱ⁾ New 28.6.1 [re.general] Requirements for CharT in the regex library No 4 3836⁽ⁱ⁾ C++23 22.8.6.2 [expected.object.cons] std::expected<bool, E1> conversion constructor expected(const expected<U, G>&) should take precedence over expected(U&&) with operator bool Yes 1 3837⁽ⁱ⁾ New 27.4.4.5 [string.erasure] std::erase_if overloads for non-associative containers should move (and not copy) their predicate object Yes 3 3838⁽ⁱ⁾ New 24.3.2.1 [incrementable.traits] The last specialization of incrementable_traits is under-constrained Yes 3 3839⁽ⁱ⁾ C++23 28.5.7.2 [format.range.formatter] range_formatter's set_separator, set_brackets, and underlying functions should be noexcept Yes 3840⁽ⁱ⁾ Open D.22.1 [depr.fs.path.factory] filesystem::u8path should be undeprecated Yes 3 3841⁽ⁱ⁾ C++23 17.3.2 [version.syn] <version> should not be "all freestanding" Yes 3842⁽ⁱ⁾ C++23 30.12 [time.format] Unclear wording for precision in chrono-format-spec Yes 3843⁽ⁱ⁾ C++23 22.8.6.6 [expected.object.obs] std::expected<T,E>::value() & assumes E is copy constructible Yes 3844⁽ⁱ⁾ Open 30.12 [time.format] Non-numeric formats for negative durations Yes 3 3845⁽ⁱ⁾ New 25.5.7.2 [range.utility.conv.to] ranges::to's from_range_t tag branch has the wrong constraint Yes 4 3846⁽ⁱ⁾ New 25.6.4.3 [range.iota.iterator] iota_view::iterator::operator- is overconstrained Yes 3 3847⁽ⁱ⁾ C++23 25.5.7.2 [range.utility.conv.to] ranges::to can still return views Yes 2 3848⁽ⁱ⁾ C++23 25.7.27.2 [range.adjacent.view] adjacent_view, adjacent_transform_view and slide_view missing base accessor Yes 3849⁽ⁱ⁾ C++23 25.7.33.3 [range.cartesian.iterator] cartesian_product_view::iterator's default constructor is overconstrained Yes 3850⁽ⁱ⁾ C++23 25.7.22.1 [range.as.const.overview] views::as_const on empty_view<T> should return empty_view<const T> Yes 3851⁽ⁱ⁾ C++23 25.7.29.5 [range.chunk.inner.iter] chunk_view::inner-iterator missing custom iter_move and iter_swap Yes 3852⁽ⁱ⁾ New 25.7.15.3 [range.join.with.iterator] join_with_view::iterator's iter_move and iter_swap should be conditionally noexcept Yes 3 3853⁽ⁱ⁾ C++23 24.5.3 [const.iterators] basic_const_iterator<volatile int*>::operator-> is ill-formed Yes 3854⁽ⁱ⁾ New 16.4.6.14 [res.on.exception.handling] §[res.on.exception.handling]/3 should not be applied to all standard library types No 3 3855⁽ⁱ⁾ New 25.7.16.2 [range.lazy.split.view] tiny-range is not quite right Yes 4 3856⁽ⁱ⁾ New 30.12 [time.format] Unclear which conversion specifiers are valid for each chrono type Yes 3 3857⁽ⁱ⁾ C++23 27.3.3.2 [string.view.cons] basic_string_view should allow explicit conversion when only traits vary Yes 3858⁽ⁱ⁾ NAD 24.5.3.4 [const.iterators.types] basic_const_iterator is too strict to provide iterator_category Yes 3859⁽ⁱ⁾ Resolved 24.3.6.4 [projected] std::projected cannot handle proxy iterator Yes 3 3860⁽ⁱ⁾ C++23 25.2 [ranges.syn] range_common_reference_t is missing Yes 3861⁽ⁱ⁾ Resolved 23.7.3.4.7 [mdspan.layout.stride] mdspan layout_stride::mapping default constructor problem Yes 1 3862⁽ⁱ⁾ C++23 24.2 [iterator.synopsis] basic_const_iterator's common_type specialization is underconstrained Yes 3863⁽ⁱ⁾ New 24.5.3.2 [const.iterators.alias] Is input_iterator guaranteed to have iter_const_reference_t? No 2 3864⁽ⁱ⁾ New 25.7.25 [range.zip] zip over range of reference to an abstract type No 4 3865⁽ⁱ⁾ C++23 22.3.3 [pairs.spec] Sorting a range of pairs Yes 2 3866⁽ⁱ⁾ C++23 22.8.6.7 [expected.object.monadic] Bad Mandates for expected::transform_error overloads Yes 3867⁽ⁱ⁾ C++23 31.11.3.1 [syncstream.osyncstream.overview] Should std::basic_osyncstream's move assignment operator be noexcept? Yes 3868⁽ⁱ⁾ LEWG 26.7.5 [alg.replace] Constrained algorithms should not require output_iterator Yes 4 3869⁽ⁱ⁾ C++23 19.5.2 [system.error.syn] Deprecate std::errc constants related to UNIX STREAMS Yes 3870⁽ⁱ⁾ C++23 26.11.1 [specialized.algorithms.general] Remove voidify Yes 3871⁽ⁱ⁾ C++23 16.4.2.5 [compliance] Adjust note about terminate Yes 3872⁽ⁱ⁾ C++23 24.5.3 [const.iterators] basic_const_iterator should have custom iter_move Yes 3 3873⁽ⁱ⁾ New 25.7.15.2 [range.join.with.view] join_with_view's const begin is underconstrained No 3 3874⁽ⁱ⁾ NAD 17.3.2 [version.syn] Rename __cpp_lib_ranges_to_container to __cpp_lib_ranges_to Yes 3875⁽ⁱ⁾ C++23 25.6.5 [range.repeat] std::ranges::repeat_view<T, IntegerClass>::iterator may be ill-formed Yes 3876⁽ⁱ⁾ C++23 23.7.3.4 [mdspan.layout] Default constructor of std::layout_XX::mapping misses precondition Yes 3877⁽ⁱ⁾ C++23 22.8.6.7 [expected.object.monadic] Incorrect constraints on const-qualified monadic overloads for std::expected Yes 3878⁽ⁱ⁾ C++23 31.4.2 [iostream.objects.overview] import std; should guarantee initialization of standard iostreams objects Yes 3879⁽ⁱ⁾ C++23 23.6.11.6 [flat.set.erasure] erase_if for flat_{,multi}set is incorrectly specified Yes 3880⁽ⁱ⁾ C++23 25.7.29.7 [range.chunk.fwd.iter] Clarify operator+= complexity for {chunk,stride}_view::iterator Yes 3881⁽ⁱ⁾ C++23 23.6.13 [container.adaptors.format] Incorrect formatting of container adapters backed by std::string Yes 3882⁽ⁱ⁾ New 22.4.9 [tuple.rel] tuple relational operators have confused friendships Yes 3 3883⁽ⁱ⁾ New 17.15.7 [support.c.headers.other] §[support.c.headers.other] Ambiguity in the requirements for includes Yes 4 3884⁽ⁱ⁾ WP 23.6.8 [flat.map] flat_foo is missing allocator-extended copy/move constructors Yes 3885⁽ⁱ⁾ WP 16.4.5.3.2 [zombie.names] 'op' should be in [zombie.names] Yes 3886⁽ⁱ⁾ WP 22.5.3.1 [optional.optional.general] Monad mo' problems Yes 3 3887⁽ⁱ⁾ WP 17.3.2 [version.syn] Version macro for allocate_at_least Yes 3888⁽ⁱ⁾ New 26.11.8 [specialized.construct] Most ranges uninitialized memory algorithms are underconstrained Yes 3 3889⁽ⁱ⁾ New 26.11.9 [specialized.destroy] std::(ranges::)destroy_at should destroy array elements in the decreasing index order Yes 3 3890⁽ⁱ⁾ New 24.3.4.4 [iterator.concept.winc] ABI issue for integer-class types Yes 3 3891⁽ⁱ⁾ New 22.8.6.1 [expected.object.general] LWG 3870 breaks std::expected<cv T, E> Yes 2 3892⁽ⁱ⁾ WP 28.5.7.2 [format.range.formatter] Incorrect formatting of nested ranges and tuples Yes 2 3893⁽ⁱ⁾ WP 32.5.8.7.2 [util.smartptr.atomic.shared] LWG 3661 broke atomic<shared_ptr<T>> a; a = nullptr; Yes 3894⁽ⁱ⁾ WP 25.8.5 [coro.generator.promise] generator::promise_type::yield_value(ranges::elements_of<Rng, Alloc>) should not be noexcept Yes 3895⁽ⁱ⁾ New 18.3 [concepts.syn] Various relation concepts are missing default values of the second template parameters Yes 3 3896⁽ⁱ⁾ New 25.4.6 [range.refinements] The definition of viewable_range is not quite right Yes 4 3897⁽ⁱ⁾ WP 20.3.4.3 [inout.ptr.t] inout_ptr will not update raw pointer to 0 Yes 2 3898⁽ⁱ⁾ New 32.9.3.3 [thread.barrier.class] Possibly unintended preconditions for completion functions of std::barrier Yes 3 3899⁽ⁱ⁾ WP 25.8.5 [coro.generator.promise] co_yielding elements of an lvalue generator is unnecessarily inefficient Yes 3 3900⁽ⁱ⁾ WP 25.8.5 [coro.generator.promise] The allocator_arg_t overloads of generator::promise_type::operator new should not be constrained Yes 3 3901⁽ⁱ⁾ NAD 20.2.8 [allocator.uses] Is uses-allocator construction of a cv-qualified object type still well-formed after LWG 3870? Yes 3902⁽ⁱ⁾ New 22.2.6 [declval] Return type of std::declval<cv void> should be (cv-unqualified) void Yes 4 3903⁽ⁱ⁾ WP 23.7.2.2.1 [span.overview] span destructor is redundantly noexcept Yes 3904⁽ⁱ⁾ WP 25.7.16.3 [range.lazy.split.outer] lazy_split_view::outer-iterator's const-converting constructor isn't setting trailing_empty_ Yes 3905⁽ⁱ⁾ WP 29.3.1 [cfenv.syn] Type of std::fexcept_t Yes 3906⁽ⁱ⁾ New 32.5.8.5 [atomics.types.pointer] "Undefined address" is undefined No 3 3907⁽ⁱ⁾ New 25.6 [range.factories] Can iterator types of range adaptors and range factories be SCARY? No 3 3908⁽ⁱ⁾ Tentatively NAD 25.7.24.3 [range.enumerate.iterator] enumerate_view::iterator constructor is explicit Yes 3909⁽ⁱ⁾ Tentatively NAD 99 [ranges.refinements] Issues about viewable_range Yes 3910⁽ⁱ⁾ New 31.4.2 [iostream.objects.overview] The effects of including <iostream> on initialization are not yet precisely specified Yes 4 3911⁽ⁱ⁾ New 20.3.1.3.5 [unique.ptr.single.observers] unique_ptr's operator* is missing a mandate Yes 3 3912⁽ⁱ⁾ WP 25.7.24.3 [range.enumerate.iterator] enumerate_view::iterator::operator- should be noexcept Yes 3913⁽ⁱ⁾ NAD 25.2 [ranges.syn] ranges::const_iterator_t<range R> fails to accept arrays of unknown bound Yes 3 3914⁽ⁱ⁾ WP 25.2 [ranges.syn] Inconsistent template-head of ranges::enumerate_view Yes 3915⁽ⁱ⁾ WP 25.4.2 [range.range] Redundant paragraph about expression variations Yes 3916⁽ⁱ⁾ New 20.2.10 [default.allocator] allocator, polymorphic_allocator, and containers should forbid cv-qualified types No 3 3917⁽ⁱ⁾ New 20.2.10 [default.allocator] Validity of allocator<void> and possibly polymorphic_allocator<void> should be clarified Yes 3 3918⁽ⁱ⁾ WP 26.11.6 [uninitialized.move] std::uninitialized_move/_n and guaranteed copy elision Yes 3 3919⁽ⁱ⁾ WP 25.7.24 [range.enumerate] enumerate_view may invoke UB for sized common non-forward underlying ranges Yes 3 3920⁽ⁱ⁾ New 16.4.5.3.4 [extern.names] Bad footnotes claiming external linkage for entities defined as macros No 3 3921⁽ⁱ⁾ New 30.12 [time.format] Is std::chrono::duration<std::int64_t, std::ratio<INT64_MAX - 1, INT64_MAX>>{40} required to be correctly formatted? No 3 3922⁽ⁱ⁾ New 17.3.5.1 [numeric.limits.general] It's unclear whether numeric_limits can be specialized by users Yes 3 3923⁽ⁱ⁾ New 17.3.5.1 [numeric.limits.general] The specification of numeric_limits doesn't clearly distinguish between implementation requirements and user requirements Yes 3 3924⁽ⁱ⁾ New 32.3.1 [thread.stoptoken.intro] Stop token data race avoidance requirements unclear Yes 3 3925⁽ⁱ⁾ WP 28.5.6.3 [format.formattable] Concept formattable's definition is incorrect Yes 3926⁽ⁱ⁾ New 16.4.5.2.1 [namespace.std] Which namespace std is the mentioned one? Yes 4 3927⁽ⁱ⁾ WP 23.2.4 [sequence.reqmts] Unclear preconditions for operator[] for sequence containers Yes 3928⁽ⁱ⁾ New 16.4.5.2.2 [namespace.posix] Non-top-level namespace posix shouldn't be reserved Yes 3 3929⁽ⁱ⁾ New 21.3.6.4 [meta.unary.prop] Preconditions for type traits should be Mandates Yes 3 3930⁽ⁱ⁾ NAD 21 [meta] Simplify type trait wording Yes 3931⁽ⁱ⁾ New 17.3.2 [version.syn] Too many paper bump __cpp_lib_ranges Yes 3 3932⁽ⁱ⁾ New 17.12.6 [cmp.alg] Expression-equivalence is sometimes unimplementable when passing prvalue expressions to comparison CPOs No 3 3933⁽ⁱ⁾ New 29.4.3 [complex] P1467R9 accidentally changed the signatures of certain constructors of std::complex Yes 4 3934⁽ⁱ⁾ New 29.4.3 [complex] std::complex<T>::operator=(const T&) has no specification Yes 3 3935⁽ⁱ⁾ WP 29.4.3 [complex] template<class X> constexpr complex& operator=(const complex<X>&) has no specification Yes 3936⁽ⁱ⁾ NAD D [depr] Are implementations allowed to deprecate components not in [depr]? Yes 3937⁽ⁱ⁾ New 31.7.7 [std.manip] I/O manipulators should be specified in terms of base classes No 3 3938⁽ⁱ⁾ WP 22.8.6.7 [expected.object.monadic] Cannot use std::expected monadic ops with move-only error_type Yes 3939⁽ⁱ⁾ New 28.5.2.2 [format.string.std] §[format.string.std] char is not formatted as a character when charT is wchar_t No 3 3940⁽ⁱ⁾ WP 22.8.7.6 [expected.void.obs] std::expected<void, E>::value() also needs E to be copy constructible Yes 3941⁽ⁱ⁾ Open 32.5.4 [atomics.order] §[atomics.order] inadvertently prohibits widespread implementation techniques No 3 3942⁽ⁱ⁾ New 27.2.4 [char.traits.specializations] Inconsistent use of const char_type& in standard specializations of std::char_traits Yes 3 3943⁽ⁱ⁾ New 28.5.6.3 [format.formattable] Clarify lifetime requirements of BasicFormatter and Formatter Yes 3 3944⁽ⁱ⁾ WP 28.5.6.4 [format.formatter.spec] Formatters converting sequences of char to sequences of wchar_t Yes 3 3945⁽ⁱ⁾ New 17.14.2 [cstdarg.syn] §[cstdarg.syn] 'Compatible types' are undefined No 3 3946⁽ⁱ⁾ WP 25.2 [ranges.syn] The definition of const_iterator_t should be reworked Yes 3947⁽ⁱ⁾ WP 25.7.28.2 [range.adjacent.transform.view] Unexpected constraints on adjacent_transform_view::base() Yes 3948⁽ⁱ⁾ WP 25.2 [ranges.syn] possibly-const-range and as-const-pointer should be noexcept Yes 3949⁽ⁱ⁾ WP 32.5.8.1 [atomics.types.generic.general] std::atomic<bool>'s trivial destructor dropped in C++17 spec wording Yes 3950⁽ⁱ⁾ WP 27.3.2 [string.view.synop] std::basic_string_view comparison operators are overspecified Yes 3951⁽ⁱ⁾ WP 22.8.6.5 [expected.object.swap] §[expected.object.swap]: Using value() instead of has_value() Yes 3952⁽ⁱ⁾ New 24.2 [iterator.synopsis] iter_common_reference_t does not conform to the definition of indirectly_readable Yes 3 3953⁽ⁱ⁾ WP 24.5.5.7 [common.iter.cust] iter_move for common_iterator and counted_iterator should return decltype(auto) Yes 3954⁽ⁱ⁾ New 17.15.1 [support.c.headers.general] Feature-test macros in C headers (<stddef.h> etc.) No 3 3955⁽ⁱ⁾ New 25.6.5.2 [range.repeat.view] Add noexcept to several repeat_view[::iterator] member functions Yes 3 3956⁽ⁱ⁾ WP 30.13 [time.parse] chrono::parse uses from_stream as a customization point Yes 3 3957⁽ⁱ⁾ WP 23.2.2.5 [container.alloc.reqmts] §[container.alloc.reqmts] The value category of v should be claimed Yes 3958⁽ⁱ⁾ Tentatively NAD 25.5.7.2 [range.utility.conv.to] ranges::to should prioritize the "reserve" branch Yes 3959⁽ⁱ⁾ New 23.6.8 [flat.map] Should the comparator of std::flat_map/std::flat_multimap be copied twice in some operations? No 3960⁽ⁱ⁾ New 30.13 [time.parse] How does chrono::parse handle duplicated data? Yes 3 3961⁽ⁱ⁾ New 30.13 [time.parse] Does chrono::parse check format strings? Yes 3 3962⁽ⁱ⁾ New 30.13 [time.parse] What is the "decimal precision of the input"? Yes 3 3963⁽ⁱ⁾ New 23.6.8.2 [flat.map.defn] Different std::flat_map/std::flat_multimap specializations should be able to share same nested classes Yes 3 3964⁽ⁱ⁾ New 29.6.3.3 [valarray.transcend] std::atan2 and std::pow overloads that take two std::valarray parameters should require the arguments to have the same length Yes 4 3965⁽ⁱ⁾ WP 28.5.6.5 [format.string.escaped] Incorrect example in [format.string.escaped] p3 for formatting of combining characters Yes 3966⁽ⁱ⁾ New 23.6.8.1 [flat.map.overview] The value_type and reference members of std::flat_(multi)map::(const_)iterator are unclear No 3 3967⁽ⁱ⁾ New 21.3.6.4 [meta.unary.prop] The specification for std::is_nothrow_* traits may be ambiguous in some cases involving noexcept(false) No 3968⁽ⁱ⁾ New 22.11.8 [bit.endian] std::endian::native value should be more specific about object representations Yes 4 3969⁽ⁱ⁾ New 26.6.18 [alg.fold] std::ranges::fold_left_first_with_iter should be more ADL-proof Yes 3 3970⁽ⁱ⁾ WP 23.7.3.2 [mdspan.syn] §[mdspan.syn] Missing definition of full_extent_t and full_extent Yes 3971⁽ⁱ⁾ NAD 25.7.15.2 [range.join.with.view] Join ranges of rvalue references with ranges of prvalues Yes 3 3972⁽ⁱ⁾ New 25.7.15.3 [range.join.with.iterator] Issues with join_with_view::iterator's iter_swap No 2 3973⁽ⁱ⁾ WP 22.8.6.7 [expected.object.monadic] Monadic operations should be ADL-proof Yes 3974⁽ⁱ⁾ WP 23.7.3.6.3 [mdspan.mdspan.members] mdspan::operator[] should not copy OtherIndexTypes Yes 3975⁽ⁱ⁾ WP 28.5.6.7 [format.context] Specializations of basic_format_context should not be permitted Yes 3 3976⁽ⁱ⁾ New 23.2.2.5 [container.alloc.reqmts] What does it mean for a type to be "allocator aware"? No 3977⁽ⁱ⁾ New 16.3.3.3.3 [bitmask.types] constexpr and noexcept for operators for bitmask types Yes 3 3978⁽ⁱ⁾ Resolved 22.4.5 [tuple.creation] The "no effect" requirement for std::ignore is unimplementable for volatile bit-fields Yes 4 3979⁽ⁱ⁾ New 22.10.13 [func.not.fn] Should we reject std::bind_front<42>() and its friends? Yes 4 3980⁽ⁱ⁾ Tentatively NAD 32.5.4 [atomics.order] The read exclusive ownership of an atomic read-modify-write operation and whether its read and write are two operations are unclear Yes 3981⁽ⁱ⁾ Tentatively NAD 25.7.2 [range.adaptor.object] Range adaptor closure object is underspecified for its return type Yes 3982⁽ⁱ⁾ Tentatively NAD 25.4.5 [range.view] is-derived-from-view-interface should require that T is derived from view_interface<T> Yes 3983⁽ⁱ⁾ New 25.5.7.3 [range.utility.conv.adaptors] ranges::to adaptors are underconstrained Yes 3 3984⁽ⁱ⁾ WP 25.5.7.2 [range.utility.conv.to] ranges::to's recursion branch may be ill-formed Yes 3 3985⁽ⁱ⁾ New 25.5.7.2 [range.utility.conv.to] ranges::to should Mandates C not to be view Yes 3 3986⁽ⁱ⁾ New 24.5.3 [const.iterators] basic_const_iterator doesn't work with optional No 3 3987⁽ⁱ⁾ WP 24.7 [iterator.range] Including <flat_foo> doesn't provide std::begin/end Yes 3988⁽ⁱ⁾ Open 24.5.3 [const.iterators] Should as_const_view and basic_const_iterator provide base()? Yes 3 3989⁽ⁱ⁾ New 27.3 [string.view] The whole range for an iterator obtained from a std::span or std::basic_string_view is not clear No 3 3990⁽ⁱ⁾ WP 22.4.4 [tuple.tuple] Program-defined specializations of std::tuple and std::variant can't be properly supported Yes 3991⁽ⁱ⁾ New 22.6.3.4 [variant.assign] variant's move assignment should not be guaranteed to produce a valueless by exception state Yes 3 3992⁽ⁱ⁾ New 31.8.2.4 [stringbuf.members] basic_stringbuf::str()&& should enforce 𝒪(1) Yes 3993⁽ⁱ⁾ New 28.5.6.1 [formatter.requirements] The parse function of a BasicFormatter type needs to be constexpr Yes 3 3994⁽ⁱ⁾ New 25.7.2 [range.adaptor.object] adaptor(args...)(r) is not equivalent to std::bind_back(adaptor, args...)(r) No 4 3995⁽ⁱ⁾ New 23.7.3 [views.multidim] Issue with custom index conversion in <mdspan> No 3 3996⁽ⁱ⁾ NAD 24.3.6.4 [projected] projected<I, identity> should just be I Yes 3997⁽ⁱ⁾ New 28.5.1 [format.syn] std::formatter specializations should be consistently restricted to supported character types No 4 3998⁽ⁱ⁾ New 28.6.4 [re.const] Constants in std::regex_constants should be allowed to be enumerators No 3 3999⁽ⁱ⁾ New 32.5.4 [atomics.order] P0439R0 changed the value category of memory order constants Yes 4 4000⁽ⁱ⁾ New 23.6.8.7 [flat.map.modifiers] flat_map::insert_range's Effects is not quite right Yes 3 4001⁽ⁱ⁾ WP 25.6.4.2 [range.iota.view] iota_view should provide empty Yes 4002⁽ⁱ⁾ New 25.6.4.3 [range.iota.iterator] The definition of iota_view::iterator::iterator_concept should be improved Yes 3 4003⁽ⁱ⁾ Tentatively NAD 25.5.3 [view.interface] view_interface::back is overconstrained Yes 4004⁽ⁱ⁾ SG1 32.5.4 [atomics.order] The load and store operation in §[atomics.order] p1 is ambiguous No 3 4005⁽ⁱ⁾ New 3.48 [defns.required.behavior] "Required behavior" too narrowly defined No 2 4006⁽ⁱ⁾ Tentatively NAD 25.7.29.4 [range.chunk.outer.value] chunk_view::outer-iterator::value_type should provide empty Yes 4007⁽ⁱ⁾ New 22.10.4 [func.require] Mystic prohibition of calling a volatile-qualified perfect forwarding call wrapper Yes 3 4008⁽ⁱ⁾ New 25.5.7.2 [range.utility.conv.to] §[range.utility.conv.to] ranges::to may cause infinite recursion if range_value_t<C> is a non-move-constructible range Yes 3 4009⁽ⁱ⁾ New 25.7.12.2 [range.drop.view] drop_view::begin const may have 𝒪(n) complexity Yes 4010⁽ⁱ⁾ New 25.5.4.3 [range.subrange.access] subrange::advance should be improved Yes 3 4011⁽ⁱ⁾ WP 23.7.2.2.6 [span.elem] "Effects: Equivalent to return" in [span.elem] Yes 4012⁽ⁱ⁾ WP 25.7.20.2 [range.common.view] common_view::begin/end are missing the simple-view check Yes 4013⁽ⁱ⁾ WP 25.7.16.4 [range.lazy.split.outer.value] lazy_split_view::outer-iterator::value_type should not provide default constructor Yes 4014⁽ⁱ⁾ WP 29.5.4.4 [rand.eng.sub] LWG 3809 changes behavior of some existing std::subtract_with_carry_engine code Yes 2 4015⁽ⁱ⁾ Open 22.5.3.8 [optional.monadic] LWG 3973 broke const overloads of std::optional monadic operations Yes 1 4016⁽ⁱ⁾ WP 25.5.7 [range.utility.conv] container-insertable checks do not match what container-inserter does Yes 4017⁽ⁱ⁾ New 25.7.17.3 [range.split.iterator] Behavior of std::views::split on an empty range Yes 3 4018⁽ⁱ⁾ New 25.5.7.2 [range.utility.conv.to] ranges::to's copy branch is underconstrained Yes 3 4019⁽ⁱ⁾ SG9 25.7.21 [range.reverse] Reversing an infinite range leads to an infinite loop No 3 4020⁽ⁱ⁾ New 23.7.3.3.2 [mdspan.extents.expo] extents::index-cast weirdness Yes 4021⁽ⁱ⁾ New 23.7.3.6.1 [mdspan.mdspan.overview] mdspan::is_always_meow() should be noexcept Yes 4022⁽ⁱ⁾ New 30.12 [time.format] Ambiguity in the formatting of negative years with format specifier %C Yes 4023⁽ⁱ⁾ WP 31.6.3.4 [streambuf.protected] Preconditions of std::basic_streambuf::setg/setp Yes 4024⁽ⁱ⁾ WP 20.3.2.2.7 [util.smartptr.shared.create] Underspecified destruction of objects created in std::make_shared_for_overwrite/std::allocate_shared_for_overwrite Yes 2 4025⁽ⁱ⁾ WP 22.8.7.4 [expected.void.assign] Move assignment operator of std::expected<cv void, E> should not be conditionally deleted Yes 4026⁽ⁱ⁾ New 22.8.6.4 [expected.object.assign] Assignment operators of std::expected should propagate triviality Yes 2 4027⁽ⁱ⁾ WP 25.2 [ranges.syn] possibly-const-range should prefer returning const R& Yes 2 4028⁽ⁱ⁾ New 21.3.8 [meta.rel] std::is_(nothrow_)convertible should be reworded to avoid dependence on the return statement Yes 4029⁽ⁱ⁾ New 27.4.3.1 [basic.string.general] basic_string accidentally fails to meet the reversible container requirements Yes 3 4030⁽ⁱ⁾ WP 26.10.17.1 [numeric.sat.func] Clarify whether arithmetic expressions in [numeric.sat.func] are mathematical or C++ Yes 4031⁽ⁱ⁾ WP 22.8.5 [expected.bad.void] bad_expected_access<void> member functions should be noexcept Yes 4032⁽ⁱ⁾ New 20.3.2.2.2 [util.smartptr.shared.const] Possibly invalid types in the constraints of constructors of std::shared_ptr Yes 4 4033⁽ⁱ⁾ New 16.4.5.3.3 [macro.names] §[macro.names] defining macros after importing the standard library Yes 3 4034⁽ⁱ⁾ New 26.8.9 [alg.min.max] Clarify specification of std::min and std::max Yes 4 4035⁽ⁱ⁾ WP 25.6.3.2 [range.single.view] single_view should provide empty Yes 4036⁽ⁱ⁾ WP D.11 [depr.c.macros] __alignof_is_defined is only implicitly specified in C++ and not yet deprecated Yes 4037⁽ⁱ⁾ WP 28.3.4.2.1 [category.ctype.general] Static data members of ctype_base are not yet required to be usable in constant expressions Yes 4038⁽ⁱ⁾ WP 28.4.2.5 [text.encoding.aliases] std::text_encoding::aliases_view should have constexpr iterators Yes 4039⁽ⁱ⁾ New 31.7.6.3.5 [ostream.formatted.print] §[ostream.formatted.print]: Inappropriate usage of badbit in definition of vprint_unicode/vprint_nonunicode Yes 4040⁽ⁱ⁾ New 22.4.7 [tuple.helper] Contradictory specification of std::tuple_size No 3 4041⁽ⁱ⁾ New 18.4.9 [concept.swappable] The requirements on literal type in [concept.swappable] should be removed Yes 4 4042⁽ⁱ⁾ Resolved 31.7.10 [print.fun] std::print should permit an efficient implementation Yes 3 4043⁽ⁱ⁾ WP 28.4.2.2 [text.encoding.general] "ASCII" is not a registered character encoding Yes 4044⁽ⁱ⁾ WP 31.7.10 [print.fun] Confusing requirements for std::print on POSIX platforms Yes 3 4045⁽ⁱ⁾ WP 22.4.4.2 [tuple.cnstr] tuple can create dangling references from tuple-like Yes 4046⁽ⁱ⁾ New 23.2.7.2 [associative.reqmts.except] Effects of inserting into or erasing from flat container adaptors when an exception is thrown need to be more permissive No 2 4047⁽ⁱ⁾ New 16.4.5.2.1 [namespace.std] Explicitly specifying template arguments for std::swap should not be supported No 4 4048⁽ⁱ⁾ New 23.6.11 [flat.set] Inconsistent preconditions for transparent insertion of std::flat_map/std::flat_set Yes 2 4049⁽ⁱ⁾ New 16.4.2 [organization] C <foo.h> headers not in freestanding Yes 3 4050⁽ⁱ⁾ New 25.7.10.1 [range.take.overview] Should views::iota(0) | views::take(5) be views::iota(0, 5)? Yes 4051⁽ⁱ⁾ New 17.12.2 [cmp.categories] A less hacky and more useful way to compare comparison category types Yes 4052⁽ⁱ⁾ New 29.5.9.6.2 [rand.dist.samp.pconst] Bogus requirements for piecewise_linear_distribution No 4 4053⁽ⁱ⁾ WP 25.6.5.2 [range.repeat.view] Unary call to std::views::repeat does not decay the argument Yes 4054⁽ⁱ⁾ WP 25.6.5.1 [range.repeat.overview] Repeating a repeat_view should repeat the view Yes 4055⁽ⁱ⁾ New 24.4.3 [iterator.operations] §[iterator.operations] std::distance is missing a precondition Yes 4 4056⁽ⁱ⁾ NAD 22.2.2 [utility.swap] The effects of std::swap are under-specified Yes 4057⁽ⁱ⁾ New 25.8.6 [coro.generator.iterator] generator::iterator's operator* is not noexcept when it can be Yes 3 4058⁽ⁱ⁾ New 20.2.4 [pointer.conversion] std::to_address() should be SFINAE-friendly Yes 4059⁽ⁱ⁾ New 25.7.15.3 [range.join.with.iterator] Leaky abstraction in join_with_view's iterator Yes 3 4060⁽ⁱ⁾ WP 23.7.3.7.7 [mdspan.sub.sub] submdspan preconditions do not forbid creating invalid pointer Yes 4061⁽ⁱ⁾ WP 28.5.6.7 [format.context] Should std::basic_format_context be default-constructible/copyable/movable? Yes 4062⁽ⁱ⁾ New 25.3.13 [range.prim.empty] ranges::empty has no semantic requirements for forward_ranges No 4063⁽ⁱ⁾ New 27.2.4.2 [char.traits.specializations.char] Freestanding std::char_traits<char>::eof depends on non-freestanding EOF No 2 4064⁽ⁱ⁾ WP 27.5.1 [cstring.syn] Clarify that std::launder is not needed when using the result of std::memcpy Yes 3 4065⁽ⁱ⁾ New 16.4.4.6.1 [allocator.requirements.general] Requirements for fancy pointers might be insufficient for self-referential implementation of containers Yes 3 4066⁽ⁱ⁾ New 25.5.7.2 [range.utility.conv.to] ranges::to should reserve when sized_sentinel_for is satisfied Yes 4067⁽ⁱ⁾ New 30.11.7.2 [time.zone.zonedtime.ctor] Inconsistency and potential infinity meta-recursion in std::chrono::zoned_time's constructors Yes 3 4068⁽ⁱ⁾ New 16.4.5.11 [res.on.requirements] Terminology for objects whose types model a concept No 4069⁽ⁱ⁾ Resolved 32.5.8 [atomics.types.generic] std::atomic<volatile T> should be ill-formed Yes 2 4070⁽ⁱ⁾ SG16 31.12.6.9.2 [fs.path.fmtr.funcs] Transcoding by std::formatter<std::filesystem::path> Yes 2 4071⁽ⁱ⁾ WP 22.10.6.6 [refwrap.comparisons] reference_wrapper comparisons are not SFINAE-friendly Yes 4072⁽ⁱ⁾ WP 22.5.9 [optional.comp.with.t] std::optional comparisons: constrain harder Yes 1 4073⁽ⁱ⁾ New 25.7.18.2 [range.concat.view] concat_view::size may overflow No 4 4074⁽ⁱ⁾ WP 25.7.15.2 [range.join.with.view] compatible-joinable-ranges is underconstrained Yes 4075⁽ⁱ⁾ SG1 16.4.4 [utility.requirements] Thread stability requirement on constructors and destructors No 3 4076⁽ⁱ⁾ WP 17.3.2 [version.syn] concat_view should be freestanding Yes 4077⁽ⁱ⁾ New 26.12.2 [alg.rand.generate] Unclear preconditions of std::ranges::generate_random No 2 4078⁽ⁱ⁾ New 28.5.5 [format.functions] What if arguments alias the output buffer in std::format_to? No 4 4079⁽ⁱ⁾ WP 25.7.18.3 [range.concat.iterator] Missing Preconditions in concat_view::iterator's conversion constructor Yes 4080⁽ⁱ⁾ New 24.3.2 [iterator.assoc.types] Presumed value and difference types of an iterator type in ranges and non-ranges algorithms No 3 4081⁽ⁱ⁾ New 25.7.18.3 [range.concat.iterator] concat_view::iterator::operator- is overconstrained Yes 3 4082⁽ⁱ⁾ WP 25.7.18.1 [range.concat.overview] views::concat(r) is well-formed when r is an output_range Yes 4083⁽ⁱ⁾ WP 25.7.7.1 [range.as.rvalue.overview] views::as_rvalue should reject non-input ranges Yes 4084⁽ⁱ⁾ WP 28.3.4.3.3.3 [facet.num.put.virtuals] std::fixed ignores std::uppercase Yes 3 4085⁽ⁱ⁾ WP 26.12.2 [alg.rand.generate] ranges::generate_random's helper lambda should specify the return type Yes 2 4086⁽ⁱ⁾ NAD 26.12.2 [alg.rand.generate] ranges::generate_random_n is missing Yes 4087⁽ⁱ⁾ SG16 17.9.3 [exception] Standard exception messages have unspecified encoding Yes 3 4088⁽ⁱ⁾ WP 31.7.6.3.5 [ostream.formatted.print] println ignores the locale imbued in std::ostream Yes 4089⁽ⁱ⁾ New 25.7.18.3 [range.concat.iterator] concat_view::iterator's iter_swap is overconstrained Yes 3 4090⁽ⁱ⁾ SG16 28.5.2.2 [format.string.std] Underspecified use of locale facets for locale-dependent std::format Yes 3 4091⁽ⁱ⁾ New 25.7.18.2 [range.concat.view] concat_view rejects non-movable references Yes 4 4092⁽ⁱ⁾ New 24.5.5.1 [common.iterator] The monotonic version of common_iterator::operator== is underconstrained Yes 3 4093⁽ⁱ⁾ New 26.6.18 [alg.fold] ranges::fold_left_first_with_iter incorrectly constructs optional<U> Yes 3 4094⁽ⁱ⁾ New 26.6.18 [alg.fold] ranges::fold_meow is overconstrained Yes 3 4095⁽ⁱ⁾ Tentatively NAD 26.4 [algorithm.syn] ranges::fold_meow should explicitly spell out the return type Yes 4096⁽ⁱ⁾ WP 25.6.4.1 [range.iota.overview] views::iota(views::iota(0)) should be rejected Yes 4097⁽ⁱ⁾ LEWG 25.7.21.1 [range.reverse.overview] views::reverse should be specialized for some view types Yes 3 4098⁽ⁱ⁾ WP 25.7.27.1 [range.adjacent.overview] views::adjacent<0> should reject non-forward ranges Yes 4099⁽ⁱ⁾ New 25.7.7.1 [range.as.rvalue.overview] The simple case of views::as_rvalue and views::common are not strictly correct Yes 4 4100⁽ⁱ⁾ New 16.4.6.4 [global.functions] Default arguments and signatures of standard library non-member functions Yes 3 4101⁽ⁱ⁾ New 31.7.6.3.2 [ostream.inserters.arithmetic] LWG 117 loses the sign for negative NaN on some architectures Yes 3 4102⁽ⁱ⁾ New 27.3.3.2 [string.view.cons] string_view(Iter, Iter) constructor breaks existing code No 2 4103⁽ⁱ⁾ New 26.7.9 [alg.unique] ranges::unique_copy's constraints for the case where result is an input_iterator are not quite right Yes 3 4104⁽ⁱ⁾ New 24.5.3 [const.iterators] basic_const_iterator<volatile int*> is not a contiguous_iterator No 4 4105⁽ⁱ⁾ WP 26.6.17 [alg.ends.with] ranges::ends_with's Returns misses difference casting Yes 4106⁽ⁱ⁾ WP 28.5.8.3 [format.args] basic_format_args should not be default-constructible Yes 4107⁽ⁱ⁾ New 28.5.7.4 [format.range.fmtmap] Map formatter may conflict with user-defined specializations of pair/tuple formatters Yes 3 4108⁽ⁱ⁾ SG9 25.7.16.2 [range.lazy.split.view] lazy_split_view should be sized_range when pattern is empty tiny-range Yes 4 4109⁽ⁱ⁾ New 29.5.3.1 [rand.req.genl] Instantiating templates in §[rand] with int8_t/uint8_t is undefined behavior Yes 4110⁽ⁱ⁾ New 20.3.2.2.2 [util.smartptr.shared.const] shared_ptr(nullptr_t, Deleter) is overconstrained, breaking some sensible deleters Yes 4111⁽ⁱ⁾ New 26.8.4 [alg.binary.search] LWG 270 and ranges version of binary search algorithms No 3 4112⁽ⁱ⁾ WP 25.5.2 [range.utility.helpers] has-arrow should required operator->() to be const-qualified Yes 4113⁽ⁱ⁾ WP 21.3.6.4 [meta.unary.prop] Disallow has_unique_object_representations<Incomplete[]> Yes 4114⁽ⁱ⁾ New 25.7.23.3 [range.elements.iterator] elements_view::iterator::operator* missing conditional noexcept specification Yes 3 4115⁽ⁱ⁾ New 24.5.4.6 [move.iter.elem] move_iterator::operator* should have conditional noexcept specification Yes 4 4116⁽ⁱ⁾ New 25.7.24.3 [range.enumerate.iterator] enumerate_view::iterator and cartesian_product_view::iterator should not always provide iterator_category Yes 4117⁽ⁱ⁾ New 25.8.6 [coro.generator.iterator] generator::iterator should provide iterator_concept Yes 4 4118⁽ⁱ⁾ New 30.12 [time.format] How should duration formatters format custom rep types? Yes 3 4119⁽ⁱ⁾ WP 25.8.5 [coro.generator.promise] generator::promise_type::yield_value(ranges::elements_of<R, Alloc>)'s nested generator may be ill-formed Yes 4120⁽ⁱ⁾ New 24.5.4.2 [move.iterator] move_iterator should provide iterator_category only when it models forward_iterator Yes 3 4121⁽ⁱ⁾ New 25.5.7.1 [range.utility.conv.general] ranges::to constructs associative containers via c.emplace(c.end(), *it) Yes 2 4122⁽ⁱ⁾ New 23.3.16.1 [inplace.vector.overview] Ill-formed operator<=> can cause hard error when instantiating std::inplace_vector Yes 2 4123⁽ⁱ⁾ New 23.3.5.4 [deque.modifiers] Container effects use "the assignment operator or move assignment operator" Yes 3 4124⁽ⁱ⁾ WP 30.12 [time.format] Cannot format zoned_time with resolution coarser than seconds Yes 4125⁽ⁱ⁾ New 24.5.4.2 [move.iterator] move_iterator's default constructor should be constrained Yes 3 4126⁽ⁱ⁾ WP 17.3.2 [version.syn] Some feature-test macros for fully freestanding features are not yet marked freestanding Yes 2 4127⁽ⁱ⁾ New 22.10.18.3 [func.search.bm] The Standard Library should not use predicates of the form pred(*i) != false Yes 3 4128⁽ⁱ⁾ New 16.4.4.6.1 [allocator.requirements.general] Allocator requirements should not allow rebinding conversions to be explicit Yes 3 4129⁽ⁱ⁾ New 16.4.6.10 [res.on.data.races] Possibly incorrect wording for data race avoidance Yes 4130⁽ⁱ⁾ Open 17.6.5 [ptr.launder] Preconditions for std::launder might be overly strict Yes 3 4131⁽ⁱ⁾ New 24.7 [iterator.range] Including <optional> doesn't provide std::begin/end Yes 3 4132⁽ⁱ⁾ New 23.2.7.1 [associative.reqmts.general] Throws specifications need to include boolean-testable operations Yes 3 4133⁽ⁱ⁾ New 33.13.1 [exec.as.awaitable] awaitable-receiver's members are potentially throwing No 1 4134⁽ⁱ⁾ WP 29.5.4.5 [rand.eng.philox] Issue with Philox algorithm specification Yes 1 4135⁽ⁱ⁾ WP 23.3.7.7 [forward.list.erasure] The helper lambda of std::erase for list should specify return type as bool Yes 4136⁽ⁱ⁾ New 29.9.3 [linalg.general] Specify behavior of [linalg] Hermitian algorithms on diagonal with nonzero imaginary part Yes 4137⁽ⁱ⁾ New 29.9.14 [linalg.algs.blas2] Fix Mandates, Preconditions, and Complexity elements of [linalg] algorithms Yes 4138⁽ⁱ⁾ New 21.3.12 [meta.const.eval] is_within_lifetime should mandate is_object Yes 4139⁽ⁱ⁾ New 30.11.8 [time.zone.leap] §[time.zone.leap] recursive constraint in <=> No 3 4140⁽ⁱ⁾ WP 22.9.2.1 [template.bitset.general] Useless default constructors for bit reference types Yes 4141⁽ⁱ⁾ WP 22.5.3.1 [optional.optional.general] Improve prohibitions on "additional storage" Yes 4142⁽ⁱ⁾ WP 28.5.6.6 [format.parse.ctx] format_parse_context::check_dynamic_spec should require at least one type Yes 4143⁽ⁱ⁾ New 33.7.2 [exec.set.value] execution::set_value/set_error/set_stopped/start should always return void Yes 2 4144⁽ⁱ⁾ WP 20.3.1.3.1 [unique.ptr.single.general] Disallow unique_ptr<T&, D> Yes 4145⁽ⁱ⁾ New 16.4.6.10 [res.on.data.races] Unclear how [res.on.data.races] apply to templated functions No 3 4146⁽ⁱ⁾ New 28.5.6.4 [format.formatter.spec] §[format.formatter.spec]/3 unconditionally enables nonlocking for container adaptors Yes 4147⁽ⁱ⁾ WP 23.2.4 [sequence.reqmts] Precondition on inplace_vector::emplace Yes 4148⁽ⁱ⁾ WP 20.3.1.3.5 [unique.ptr.single.observers] unique_ptr::operator* should not allow dangling references Yes 4149⁽ⁱ⁾ New 16.4.5.3.3 [macro.names] User defined macros without standard headers (294 redux) Yes 4150⁽ⁱ⁾ Resolved 33.12.1.4 [exec.run.loop.members] The preconditions on run_loop::run() are too strict Yes 4151⁽ⁱ⁾ New 23.3.16.5 [inplace.vector.modifiers] Precondition of inplace_vector::swap Yes 2 4152⁽ⁱ⁾ New 27.2.2 [char.traits.require] The primary template of std::char_traits is totally underspecified Yes 4 4153⁽ⁱ⁾ WP 29.5.4.5 [rand.eng.philox] Fix extra "-1" for philox_engine::max() Yes 4154⁽ⁱ⁾ WP 32.10.10.2 [futures.task.members] The Mandates for std::packaged_task's constructor from a callable entity should consider decaying Yes 3 4155⁽ⁱ⁾ New 16.4.4.4 [nullablepointer.requirements] Cpp17NullablePointer should require that some expression can be contextually converted to bool Yes 3 4156⁽ⁱ⁾ SG16 19.5.3.2 [syserr.errcat.virtuals] error_category messages have unspecified encoding Yes 3 4157⁽ⁱ⁾ WP 17.12.6 [cmp.alg] The resolution of LWG3465 was damaged by P2167R3 Yes 4158⁽ⁱ⁾ New 32.10.10.2 [futures.task.members] packaged_task::operator= should abandon its shared state Yes 3 4159⁽ⁱ⁾ New 23.2.5 [container.node] Uses-allocator construction mechanisms should be opted out for node handles Yes 3 4160⁽ⁱ⁾ New 32.10.10.1 [futures.task.general] packaged_task should reject rvalue reference return types Yes 3 4161⁽ⁱ⁾ New 29.4 [complex.numbers] Some free functions don't automatically work for program-defined std::complex<NonFloatingPoint> No 3 4162⁽ⁱ⁾ New 26.8.3 [alg.nth.element] Worst time complexity of non-parallel versions of nth_element is underspecified Yes 3 4163⁽ⁱ⁾ Tentatively NAD 28.3.4.3.2.3 [facet.num.get.virtuals] Can the overload of std::num_get::do_get for bool call the overload for long? No 4164⁽ⁱ⁾ WP 23.3.7.5 [forward.list.modifiers] Missing guarantees for forward_list modifiers Yes 3 4165⁽ⁱ⁾ New 18.4.9 [concept.swappable] Should swapping a built-in array or std::array with itself result in UB? No 3 4166⁽ⁱ⁾ New 25.7.18.2 [range.concat.view] concat_view::end() should be more constrained in order to support noncopyable iterators Yes 4167⁽ⁱ⁾ New 26.8.9 [alg.min.max] Use of "smaller" and "larger" in min, max, and minmax is unclear Yes 3 4168⁽ⁱ⁾ New 20.2.6 [obj.lifetime] std::start_lifetime_as inadvertently has undefined behavior due to use of std::bit_cast Yes 4169⁽ⁱ⁾ WP 32.5.8.2 [atomics.types.operations] std::atomic<T>'s default constructor should be constrained Yes 4170⁽ⁱ⁾ WP 24.3.4.14 [iterator.concept.contiguous] contiguous_iterator should require to_address(I{}) Yes 4171⁽ⁱ⁾ New 24.3.6.3 [indirectcallable.indirectinvocable] P2609R3 breaks code that uses views::zip and get<T> No 4172⁽ⁱ⁾ WP 32.6.5.4.2 [thread.lock.unique.cons] unique_lock self-move-assignment is broken Yes 4173⁽ⁱ⁾ New 23 [containers] Better term for "references, pointers and iterators to elements" No 4 4174⁽ⁱ⁾ SG1 32.5.4 [atomics.order] How does [atomics.order] p3 apply when then modification is an initialization? No 3 4175⁽ⁱ⁾ WP 33.5.2 [exec.get.allocator] get_env() specified in terms of as_const() but this doesn't work with rvalue senders Yes 4176⁽ⁱ⁾ New 23 [containers] Refer back to container requirements when extending them No 4 4177⁽ⁱ⁾ SG1 32.5.4 [atomics.order] §[atomics.order] p8 "circularly depend on their own computation" is unclear for loop No 4 4178⁽ⁱ⁾ NAD Editorial 24.3.1 [iterator.requirements.general] writable is no longer a term of power Yes 4179⁽ⁱ⁾ WP 26.6.15 [alg.search] Wrong range in [alg.search] Yes 4180⁽ⁱ⁾ New 23.6.12.5 [flat.multiset.modifiers] Inconsistent constraints on flat_foo::emplace Yes 3 4181⁽ⁱ⁾ New 24.7 [iterator.range] Some ranges have negative ssize No 3 4182⁽ⁱ⁾ New 17.2.3 [support.types.nullptr] Definition of NULL is too broad Yes 3 4183⁽ⁱ⁾ New 25.5.4.1 [range.subrange.general] subrange should provide data() Yes 4 4184⁽ⁱ⁾ Tentatively NAD 25.3 [range.access] Domain of ranges::cmeow doesn't match ranges::meow No 4185⁽ⁱ⁾ New 29.9.7 [linalg.helpers] Ill-formed, no diagnostic required on runtime behavior No 3 4186⁽ⁱ⁾ WP 28.6.6 [re.traits] regex_traits::transform_primary mistakenly detects typeid of a function Yes 4187⁽ⁱ⁾ New 22.9.2 [template.bitset] bitset::reference should be const-assignable Yes 3 4188⁽ⁱ⁾ WP 31.7.6.2.4 [ostream.sentry] ostream::sentry destructor should handle exceptions Yes 4189⁽ⁱ⁾ WP 17.3.2 [version.syn] cache_latest_view should be freestanding Yes 4190⁽ⁱ⁾ New 33.9.2 [exec.snd.expos] Specification of completion-signatures-for in [exec.snd.expos]/p39 is recursive Yes 2 4191⁽ⁱ⁾ WP 29.4.10 [cmplx.over] P1467 changed the return type of pow(complex<float>, int) Yes 4192⁽ⁱ⁾ New 31.5.2.8 [ios.base.cons] §[ios.base.cons] ios_base members may not have indeterminate values after construction Yes 3 4193⁽ⁱ⁾ New 30.11.2 [time.zone.db] §[time.zone.db] the specification uses the undefined term "thread-safe" No 3 4194⁽ⁱ⁾ Tentatively NAD 32.5.8.5 [atomics.types.pointer] atomic<void*> should use generic class template Yes 4195⁽ⁱ⁾ New 22.8.6.4 [expected.object.assign] expected<int, int> isn't specified to be trivially assignable Yes 2 4196⁽ⁱ⁾ WP 26.8.6 [alg.merge] Complexity of inplace_merge() is incorrect Yes 4 4197⁽ⁱ⁾ New 22.6.7 [variant.visit] Complexity of std::visit with immediate functions Yes 2 4198⁽ⁱ⁾ WP 33.9.12.7 [exec.schedule.from] schedule_from isn't starting the schedule sender if decay-copying results throws Yes 1 4199⁽ⁱ⁾ New 33.9.1 [exec.snd.general] constraints on user customizations of standard sender algorithms are incorrectly specified No 1 4200⁽ⁱ⁾ WP 33.8.1 [exec.opstate.general] The operation_state concept can be simplified Yes 4201⁽ⁱ⁾ WP 33.9.4 [exec.awaitable] with-await-transform::await_transform should not use a deduced return type Yes 4202⁽ⁱ⁾ WP 33.9.3 [exec.snd.concepts] enable-sender should be a variable template Yes 1 4203⁽ⁱ⁾ WP 33.9.12.7 [exec.schedule.from] Constraints on get-state functions are incorrect Yes 1 4204⁽ⁱ⁾ WP 33.9.12.10 [exec.let] specification of as-sndr2(Sig) in [exec.let] is incomplete Yes 1 4205⁽ⁱ⁾ WP 33.9.12.10 [exec.let] let_[*].transform_env is specified in terms of the let_* sender itself instead of its child Yes 1 4206⁽ⁱ⁾ New 99 [exec.syn] Alias template connect_result_t should be constrained with sender_to Yes 1 4207⁽ⁱ⁾ New 17.8.2.2 [support.srcloc.cons] Point of reference for source_location is not specified when used in an default template argument Yes 4208⁽ⁱ⁾ WP 33.9.10 [exec.connect] Wording needs to ensure that in connect(sndr, rcvr) that rcvr expression is only evaluated once Yes 4209⁽ⁱ⁾ WP 33.9.5 [exec.domain.default] default_domain::transform_env should be returning FWD-ENV(env) Yes 4210⁽ⁱ⁾ New 25.7.34.3 [range.cache.latest.iterator] Issue with cache_latest_view::iterator's reference type No 3 4211⁽ⁱ⁾ New 30.11.2.1 [time.zone.db.tzdb] IANA time zone database allows links to refer to links Yes 4212⁽ⁱ⁾ New 29.5.4.5 [rand.eng.philox] Make the round states in [rand.eng.philox] explicit Yes 3 4213⁽ⁱ⁾ New 33.9 [exec.snd] Sender spec depends on unspecified order of evaluation No 4214⁽ⁱ⁾ New 25.7.10.1 [range.take.overview] Missing Preconditions for take/drop adaptor Yes 4215⁽ⁱ⁾ New 33.12.1 [exec.run.loop] run_loop::finish should be noexcept Yes 2 4216⁽ⁱ⁾ New 28.3.4.3.3.3 [facet.num.put.virtuals] num_put::do_put and void pointers Yes 3 4217⁽ⁱ⁾ WP 23.7.3.4.2 [mdspan.layout.reqmts] Clarify mdspan layout mapping requirements for rank == 0 Yes 4218⁽ⁱ⁾ New 24.5.3.5 [const.iterators.ops] Constraint recursion in basic_const_iterator's relational operators due to ADL + CWG 2369 Yes 2 4219⁽ⁱ⁾ New 23.3.13.6 [vector.erasure] std::vector::erase[_if] should be based on ranges remove Yes 4220⁽ⁱ⁾ New 25.7.14.2 [range.join.view] join_view incorrectly stores inner range Yes 4221⁽ⁱ⁾ New 28.5.7 [format.range] Cannot format const-iterable only ranges No 4222⁽ⁱ⁾ WP 22.8.6.2 [expected.object.cons] expected constructor from a single value missing a constraint Yes 4223⁽ⁱ⁾ New 23.4.1 [associative.general] Deduction guides for maps are mishandling tuples and references Yes 4224⁽ⁱ⁾ WP 29.5.4.5 [rand.eng.philox] Philox engines should be freestanding Yes 4225⁽ⁱ⁾ New 23.3.5.3 [deque.capacity] What should happen when an exception is thrown on resizing std::deque, std::forward_list, or std::list? No 4226⁽ⁱ⁾ New 25.7.35 [range.to.input] to_input_view::iterator cannot be compared to its const sentinel Yes 2 4227⁽ⁱ⁾ WP 33.9.12.12 [exec.when.all] Missing noexcept operator in [exec.when.all] Yes 4228⁽ⁱ⁾ Tentatively NAD 23.3.14.1 [vector.bool.pspc] Does vector<bool, Allocator> mandate that Allocator::value_type is bool? No 4229⁽ⁱ⁾ New 25.5.7.2 [range.utility.conv.to] std::ranges::to with union return type Yes 4230⁽ⁱ⁾ New 29.10.8.4 [simd.complex.access] simd<complex>::real/imag is overconstrained Yes 2 4231⁽ⁱ⁾ WP 29.10.3 [simd.syn] datapar::chunk<N> should use simd-size-type instead of size_t Yes 4232⁽ⁱ⁾ WP 29.10.4 [simd.traits] datapar::resize does not resize Yes 4233⁽ⁱ⁾ WP 23.3.9.6 [hive.erasure] The helper lambda of std::erase for hive should specify return type as bool Yes 4234⁽ⁱ⁾ WP 24.7 [iterator.range] Including <hive> doesn't provide std::begin/end Yes 4235⁽ⁱ⁾ WP 25.7.34.2 [range.cache.latest.view] cache_latest_view and to_input_view miss reserve_hint Yes 2 4236⁽ⁱ⁾ WP 25.7.29.4 [range.chunk.outer.value] chunk_view::outer-iterator::value_type should provide reserve_hint Yes 4237⁽ⁱ⁾ New 24.5.3.3 [const.iterators.iterator] The standard library iterator adaptor does not handle iterator_category correctly No 3 4238⁽ⁱ⁾ New 29.10.9.4 [simd.mask.unary] simd_mask<complex<double>>::operator+/-/~ return a disabled simd specialization Yes 1 4239⁽ⁱ⁾ WP 23.6.8.7 [flat.map.modifiers] flat_map's transparent comparator no longer works for string literals Yes 4240⁽ⁱ⁾ New 28.5.6.3 [format.formattable] The formattable type is not a formattable type Yes 2 4241⁽ⁱ⁾ New 26.6.5 [alg.foreach] ranges::for_each(_n) should be less constrained Yes 4242⁽ⁱ⁾ WP 24.4.4.3 [range.iter.op.distance] ranges::distance does not work with volatile iterators Yes 4243⁽ⁱ⁾ Ready 23.7.2.3 [span.objectrep] as_bytes/as_writable_bytes is broken with span<volatile T> Yes 4 4244⁽ⁱ⁾ New 32.5.7.2 [atomics.ref.ops] Whether the spuriously failed comparison applies to compare_exchange_strong is unclear No 4245⁽ⁱ⁾ WP 24.5.7.1 [counted.iterator] Operators that interact with counted_iterator and default_sentinel_t should be noexcept Yes 4246⁽ⁱ⁾ Tentatively NAD 28.5.7.2 [format.range.formatter] Redundant constraint in range_formatter::format Yes 4247⁽ⁱ⁾ WP 22.12 [stdbit.h.syn] Header <stdbit.h> is not yet freestanding Yes 4248⁽ⁱ⁾ New 33.9.2 [exec.snd.expos] Late domain-based dispatching of schedule_from and continues_on are flipped Yes 1 4249⁽ⁱ⁾ New 25.7.16.3 [range.lazy.split.outer] The past end issue for lazy_split_view Yes 4250⁽ⁱ⁾ New 20.4.1.7 [indirect.swap] swap overloads for indirect and polymorphic only found by ADL Yes 4251⁽ⁱ⁾ New 99 [indirect.asgn] Move assignment for indirect unnecessarily requires copy construction Yes 1 4252⁽ⁱ⁾ New 16.4.6.13 [derivation] Are exposition-only classes considered specified for the purpose of final? Yes 4253⁽ⁱ⁾ Tentatively Ready 24.5.3.3 [const.iterators.iterator] basic_const_iterator should provide iterator_type Yes 4254⁽ⁱ⁾ New 25.7.32.3 [range.stride.iterator] stride_view::iterator should provide operator-> Yes 4255⁽ⁱ⁾ New 22.10.17.4.3 [func.wrap.move.ctor] move_only_function constructor should recognize empty copyable_functions Yes 4256⁽ⁱ⁾ New 22.10.17.6.3 [func.wrap.ref.ctor] Incorrect constrains for function_ref constructors from nontype_t Yes 4257⁽ⁱ⁾ New 30.7.9 [time.clock.local] Stream insertion for chrono::local_time should be constrained Yes 4258⁽ⁱ⁾ New 16.4.4.6.1 [allocator.requirements.general] Size type mismatch in constraints involving Cpp17Allocator No 4259⁽ⁱ⁾ New 27.4.3.8.2 [string.find] P1148R0 changed the return values of searching functions of std::basic_string on some platforms Yes 4260⁽ⁱ⁾ New 33.2.1 [exec.queryable.general] Query objects must be default constructible Yes 4261⁽ⁱ⁾ New 27.4.3.8.2 [string.find] P1206R7 broke uses of container adaptors with old custom sequence containers No 4262⁽ⁱ⁾ New 26.7.1 [alg.copy] copy_if, remove_copy, remove_copy_if, unique_copy have too strong preconditions Yes 4263⁽ⁱ⁾ New 28.5 [format] What should std::format_to etc. behave when the output is overlong? No 4264⁽ⁱ⁾ New 22.10.17.1 [func.wrap.general] Skipping indirection is not allowed for function_ref Yes 4265⁽ⁱ⁾ New 26.10.16 [numeric.ops.midpoint] std::midpoint should not accept const bool Yes 4266⁽ⁱ⁾ Tentatively Ready 23.7.3.4.7 [mdspan.layout.stride] layout_stride::mapping should treat empty mappings as exhaustive Yes 4267⁽ⁱ⁾ New 22.4.4.2 [tuple.cnstr] Uses-allocator construction is meaningless for tuple of references Yes 4268⁽ⁱ⁾ New 22.10.4 [func.require] function<void()> suppresses nodiscard warnings No 4269⁽ⁱ⁾ New 26.7.9 [alg.unique] unique_copy passes arguments to its predicate backwards Yes 4270⁽ⁱ⁾ New 24.3.6.4 [projected] Diagnose misuse of std::projected::operator* Yes 4271⁽ⁱ⁾ New 24.3.1 [iterator.requirements.general] Caching range views claim amortized amortized 𝒪(1) runtime complexity for algorithms that are in fact 𝒪(n) Yes 4272⁽ⁱ⁾ New 23.7.3.4 [mdspan.layout] For rank == 0, layout_stride is atypically convertible Yes 2 4273⁽ⁱ⁾ New 26.3.6 [execpol] Standard execution policy types should be conventional tag class types Yes 4274⁽ⁱ⁾ Tentatively Ready 30.9.2 [time.hms.members] The chrono::hh_mm_ss constructor is ill-formed for unsigned durations Yes 4275⁽ⁱ⁾ New 23.7.3.2 [mdspan.syn] std::dynamic_extent should also be defined in <mdspan> Yes 4276⁽ⁱ⁾ New 23.3.3.5 [array.zero] front() and back() are not hardened for zero-length std::arrays Yes 4277⁽ⁱ⁾ New 26.2 [algorithms.requirements] §[algorithms.requirements] It is unclear what an algorithm is Yes 4278⁽ⁱ⁾ New 33.9.2 [exec.snd.expos] Consider changing how get-domain-early(sndr) works No 4279⁽ⁱ⁾ New 31.12.13.2 [fs.op.absolute] §[fs.op.absolute] Non-normative encouragement should be Recommended practice No 4280⁽ⁱ⁾ New 29.10.8.7 [simd.loadstore] simd::partial_load uses undefined identifier T Yes 4281⁽ⁱ⁾ New 22.5.3.7 [optional.observe] Inconsistency between value_or() and error_or() in std::expected No 4282⁽ⁱ⁾ New 20.2.6 [obj.lifetime] Imprecise Throws: clause in std::relocate Yes 4283⁽ⁱ⁾ New 20.2.6 [obj.lifetime] std::trivially_relocate needs stronger preconditions on "nested" objects with dynamic lifetime Yes 4284⁽ⁱ⁾ New 28.5.6.4 [format.formatter.spec] Integer-class types should be formattable Yes 4285⁽ⁱ⁾ New 28.3.4.6.2.2 [locale.time.get.members] time_get::do_get_date is problematic even after LWG 461 No 4286⁽ⁱ⁾ New 17.3.2 [version.syn] Some more feature-test macros for fully freestanding features are not marked freestanding Yes 4287⁽ⁱ⁾ New 28.3.4.2.5.3 [locale.codecvt.virtuals] §[locale.codecvt.virtuals] do_in and do_out could do with better specification Yes 4288⁽ⁱ⁾ New 30.7.2.2 [time.clock.system.members] The Constraints: element in [time.clock.system.members] is probably wrong Yes 4289⁽ⁱ⁾ New 29.5.3.2 [rand.req.seedseq] Seed sequence is overspecified Yes 4290⁽ⁱ⁾ New 20.2.5 [ptr.align] Missing Mandates clauses on is_sufficiently_aligned Yes 4291⁽ⁱ⁾ New 23.4.3.1 [map.overview] explicit map(const Allocator&) should be constexpr Yes 4292⁽ⁱ⁾ New 23.5.3.1 [unord.map.overview] Unordered container local iterators should be constexpr iterators Yes 4293⁽ⁱ⁾ New 23.7.2.2.4 [span.sub] span::subspan/first/last chooses wrong constructor when T is const-qualified bool Yes 4294⁽ⁱ⁾ New 22.9.2.2 [bitset.cons] bitset(const CharT*) constructor needs to be constrained Yes 4295⁽ⁱ⁾ New 8.2.6 [fund.ts.v3::memory.observer.ptr.special] [fund.ts.v3] experimental::observer_ptr should have more constexpr Yes 4296⁽ⁱ⁾ New 16.4.4.5 [hash.requirements] Clarify that Cpp17Hash does not imply stateless No 4297⁽ⁱ⁾ New 26.4 [algorithm.syn] Missing permutable constraint for iterator overloads in Parallel Range Algorithms Yes 4298⁽ⁱ⁾ New 21.4.12 [meta.reflection.extract] §[meta.reflection.extract] Malformed "F noexcept" type Yes 4299⁽ⁱ⁾ New 22.5.4.7 [optional.ref.monadic] Missing Mandates: part in optional<T&>::transform Yes 4300⁽ⁱ⁾ New 22.5.4.3 [optional.ref.assign] Missing Returns: element in optional<T&>::emplace Yes 4301⁽ⁱ⁾ New 32.7.4 [thread.condition.condvar] condition_variable{_any}::wait_{for, until} should take timeout by value Yes 4302⁽ⁱ⁾ New 29.9.13.8 [linalg.algs.blas1.ssq] Problematic vector_sum_of_squares wording Yes 4303⁽ⁱ⁾ New 24.4.4.3 [range.iter.op.distance] std::decay_t in the specification of ranges::distance is problematic Yes 4304⁽ⁱ⁾ New 22.5.4.6 [optional.ref.observe] std::optional<NonReturnable&> is ill-formed due to value_or Yes 4305⁽ⁱ⁾ New 17.12.7 [compare.type] Missing user requirements on type_order template Yes 4306⁽ⁱ⁾ New 16.4.6.5 [member.functions] Interaction between LWG 2259 and Constraints of member functions No 4307⁽ⁱ⁾ New 25.2 [ranges.syn] Make good use of sized-random-access-range and bidirectional-common in <ranges> Yes 4308⁽ⁱ⁾ New 22.5.4.5 [optional.ref.iterators] std::optional<T&>::iterator can't be a contiguous iterator for some T Yes 4309⁽ⁱ⁾ New 32.5.4 [atomics.order] How are two seq_cst operations ordered in the single total order if these two operations are unsequenced? No 4310⁽ⁱ⁾ New 32.4.3.3 [thread.thread.constr] Is "the completion of the invocation of the constructor" considered as an expression? No 4311⁽ⁱ⁾ New 20.5.3.3 [mem.poly.allocator.mem] Can std::pmr::polymorphic_allocator::construct just call std::uninitialized_construct_using_allocator? Yes 4312⁽ⁱ⁾ New 20.2.8.2 [allocator.uses.construction] Const and value category mismatch for allocator_arg_t/allocator_arg in the description of uses-allocator construction Yes 4313⁽ⁱ⁾ New 22.4.4.2 [tuple.cnstr] Uses-allocator construction of pair in tuple's allocator_arg_t constructors Yes 4314⁽ⁱ⁾ New 23.7.3.4 [mdspan.layout] Missing move in mdspan layout mapping::operator() Yes 4315⁽ⁱ⁾ New 29.9.13.9 [linalg.algs.blas1.nrm2] Insufficient specification of vector_two_norm and matrix_frob_norm No 4316⁽ⁱ⁾ New 21.4.13 [meta.reflection.substitute] {can_}substitute specification is ill-formed No

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