Issue also posted to the LLVM bugtracker: https://github.com/llvm/llvm-project/issues/97842 Some repros ; easily reproducible on an archlinux container. Ex. 1: https://github.com/boostorg/container/issues/282 Repro: ```bash $ docker run -v $PWD:/src -it archlinux:latest $ pacman -Sy $ pacman -S clang $ echo '#include <boost/container/flat_map.hpp> int main() { boost::container::flat_map<int, int> f; f[0]; }' > foo.cpp $ clang++ foo.cpp -std=c++23 -I /src/boost_1_85_0 ``` Ex. 2: https://github.com/martinus/unordered_dense/issues/119 Ex. 3: ```c++ #include <nlohmann/json.hpp> void x(const char* s, int n) { nlohmann::json::parse(s, s + n); } ``` cause errors such as : ``` /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/14.1.1/../../../../include/c++/14.1.1/tuple:956:36: error: no matching function for call to 'get' 956 | return __convertible<decltype(std::get<_Is>(std::declval<_UTuple>()))...>(); | ^~~~~~~~~~~~~ /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/14.1.1/../../../../include/c++/14.1.1/tuple:955:11: note: in instantiation of function template specialization 'std::tuple<const std::basic_string<char> &>::__convertible_from_tuple_like()::(anonymous class)::operator()<0UL>' requested here 955 | return []<size_t... _Is>(index_sequence<_Is...>) { | ^ /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/14.1.1/../../../../include/c++/14.1.1/tuple:1136:22: note: in instantiation of function template specialization 'std::tuple<const std::basic_string<char> &>::__convertible_from_tuple_like<const std::basic_string<char> &>' requested here 1136 | constexpr explicit(!__convertible_from_tuple_like<_UTuple>()) | ^ /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/14.1.1/../../../../include/c++/14.1.1/bits/stl_map.h:514:38: note: while substituting deduced template arguments into function template 'tuple' [with _UTuple = const key_type &] 514 | std::tuple<const key_type&>(__k), | ^ /usr/include/nlohmann/detail/input/json_sax.hpp:442:66: note: in instantiation of member function 'std::map<std::basic_string<char>, nlohmann::basic_json<>, std::less<void>>::operator[]' requested here 442 | object_element = &(ref_stack.back()->m_value.object->operator[](val) = discarded); | ^ /usr/include/nlohmann/detail/input/parser.hpp:219:56: note: in instantiation of member function 'nlohmann::detail::json_sax_dom_callback_parser<nlohmann::basic_json<>>::key' requested here 219 | if (JSON_HEDLEY_UNLIKELY(!sax->key(m_lexer.get_string()))) | ^ /usr/include/nlohmann/detail/input/parser.hpp:98:13: note: in instantiation of function template specialization 'nlohmann::detail::parser<nlohmann::basic_json<>, nlohmann::detail::iterator_input_adapter<const char *>>::sax_parse_internal<nlohmann::detail::json_sax_dom_callback_parser<nlohmann::basic_json<>>>' requested here 98 | sax_parse_internal(&sdp); | ^ /usr/include/nlohmann/json.hpp:4029:113: note: in instantiation of member function 'nlohmann::detail::parser<nlohmann::basic_json<>, nlohmann::detail::iterator_input_adapter<const char *>>::parse' requested here 4029 | parser(detail::input_adapter(std::move(first), std::move(last)), cb, allow_exceptions, ignore_comments).parse(true, result); | ^ /usr/include/nlohmann/json.hpp:5138:28: note: in instantiation of function template specialization 'nlohmann::basic_json<>::parse<const char *>' requested here 5138 | return nlohmann::json::parse(s, s + n); | ^ /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/14.1.1/../../../../include/c++/14.1.1/bits/stl_pair.h:122:5: note: candidate template ignored: could not match 'tuple' against 'basic_string' 122 | get(tuple<_Elements...>& __t) noexcept; | ^ /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/14.1.1/../../../../include/c++/14.1.1/bits/stl_pair.h:126:5: note: candidate template ignored: could not match 'tuple' against 'basic_string' 126 | get(const tuple<_Elements...>& __t) noexcept; | ^ /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/14.1.1/../../../../include/c++/14.1.1/bits/stl_pair.h:130:5: note: candidate template ignored: could not match 'tuple' against 'basic_string' 130 | get(tuple<_Elements...>&& __t) noexcept; | ^ /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/14.1.1/../../../../include/c++/14.1.1/bits/stl_pair.h:134:5: note: candidate template ignored: could not match 'tuple' against 'basic_string' 134 | get(const tuple<_Elements...>&& __t) noexcept; | ^ /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/14.1.1/../../../../include/c++/14.1.1/bits/stl_pair.h:138:5: note: candidate template ignored: could not match 'array' against 'basic_string' 138 | get(array<_Tp, _Nm>&) noexcept; | ^ /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/14.1.1/../../../../include/c++/14.1.1/bits/stl_pair.h:142:5: note: candidate template ignored: could not match 'array' against 'basic_string' 142 | get(array<_Tp, _Nm>&&) noexcept; | ^ /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/14.1.1/../../../../include/c++/14.1.1/bits/stl_pair.h:146:5: note: candidate template ignored: could not match 'array' against 'basic_string' 146 | get(const array<_Tp, _Nm>&) noexcept; | ^ /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/14.1.1/../../../../include/c++/14.1.1/bits/stl_pair.h:150:5: note: candidate template ignored: could not match 'array' against 'basic_string' 150 | get(const array<_Tp, _Nm>&&) noexcept; | ^ /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/14.1.1/../../../../include/c++/14.1.1/bits/stl_pair.h:1250:5: note: candidate template ignored: could not match 'pair' against 'basic_string' 1250 | get(pair<_Tp1, _Tp2>& __in) noexcept | ^ /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/14.1.1/../../../../include/c++/14.1.1/bits/stl_pair.h:1255:5: note: candidate template ignored: could not match 'pair' against 'basic_string' 1255 | get(pair<_Tp1, _Tp2>&& __in) noexcept | ^ /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/14.1.1/../../../../include/c++/14.1.1/bits/stl_pair.h:1260:5: note: candidate template ignored: could not match 'pair' against 'basic_string' 1260 | get(const pair<_Tp1, _Tp2>& __in) noexcept | ^ /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/14.1.1/../../../../include/c++/14.1.1/bits/stl_pair.h:1265:5: note: candidate template ignored: could not match 'pair' against 'basic_string' 1265 | get(const pair<_Tp1, _Tp2>&& __in) noexcept | ^ /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/14.1.1/../../../../include/c++/14.1.1/bits/ranges_util.h:444:5: note: candidate template ignored: could not match 'subrange' against 'basic_string' 444 | get(const subrange<_It, _Sent, _Kind>& __r) | ^ /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/14.1.1/../../../../include/c++/14.1.1/bits/ranges_util.h:455:5: note: candidate template ignored: could not match 'subrange' against 'basic_string' 455 | get(subrange<_It, _Sent, _Kind>&& __r) | ^ /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/14.1.1/../../../../include/c++/14.1.1/bits/stl_pair.h:1272:5: note: candidate template ignored: invalid explicitly-specified argument for template parameter '_Tp' 1272 | get(pair<_Tp, _Up>& __p) noexcept | ^ /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/14.1.1/../../../../include/c++/14.1.1/bits/stl_pair.h:1277:5: note: candidate template ignored: invalid explicitly-specified argument for template parameter '_Tp' 1277 | get(const pair<_Tp, _Up>& __p) noexcept | ^ /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/14.1.1/../../../../include/c++/14.1.1/bits/stl_pair.h:1282:5: note: candidate template ignored: invalid explicitly-specified argument for template parameter '_Tp' 1282 | get(pair<_Tp, _Up>&& __p) noexcept | ^ /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/14.1.1/../../../../include/c++/14.1.1/bits/stl_pair.h:1287:5: note: candidate template ignored: invalid explicitly-specified argument for template parameter '_Tp' 1287 | get(const pair<_Tp, _Up>&& __p) noexcept | ^ /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/14.1.1/../../../../include/c++/14.1.1/bits/stl_pair.h:1292:5: note: candidate template ignored: invalid explicitly-specified argument for template parameter '_Tp' 1292 | get(pair<_Up, _Tp>& __p) noexcept | ^ /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/14.1.1/../../../../include/c++/14.1.1/bits/stl_pair.h:1297:5: note: candidate template ignored: invalid explicitly-specified argument for template parameter '_Tp' 1297 | get(const pair<_Up, _Tp>& __p) noexcept | ^ /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/14.1.1/../../../../include/c++/14.1.1/bits/stl_pair.h:1302:5: note: candidate template ignored: invalid explicitly-specified argument for template parameter '_Tp' 1302 | get(pair<_Up, _Tp>&& __p) noexcept | ^ /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/14.1.1/../../../../include/c++/14.1.1/bits/stl_pair.h:1307:5: note: candidate template ignored: invalid explicitly-specified argument for template parameter '_Tp' 1307 | get(const pair<_Up, _Tp>&& __p) noexcept | ^ 1 warning and 1 error generated. ```
Dupe. *** This bug has been marked as a duplicate of bug 115838 ***