Author
anonymous
about 1 year ago
Language
C++
Compiler
gcc 13.2.0
Options
Warnings
Boost 1.83.0
C++2a
-pedantic
Author
anonymous
about 1 year ago
$ g++ prog.cc -Wall -Wextra -I/opt/wandbox/boost-1.83.0-gcc-13.2.0/include -std=c++2a -pedantic In file included from prog.cc:1:
/opt/wandbox/gcc-13.2.0/include/c++/13.2.0/format: In instantiation of 'class std::__format::_Checking_scanner<char, std::basic_string_view<char8_t, std::char_traits<char8_t> > >':
/opt/wandbox/gcc-13.2.0/include/c++/13.2.0/format:3671:4: required from 'consteval std::basic_format_string<_CharT, _Args>::basic_format_string(const _Tp&) [with _Tp = char [15]; _CharT = char; _Args = {std::basic_string_view<char8_t, std::char_traits<char8_t> >&}]'
prog.cc:8:23: required from here
/opt/wandbox/gcc-13.2.0/include/c++/13.2.0/format:3593:10: error: static assertion failed: std::formatter must be specialized for each type being formatted
3593 | (is_default_constructible_v<formatter<_Args, _CharT>> && ...),
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/opt/wandbox/gcc-13.2.0/include/c++/13.2.0/format:3593:10: note: 'std::is_default_constructible_v<std::formatter<std::basic_string_view<char8_t>, char> >' evaluates to false
/opt/wandbox/gcc-13.2.0/include/c++/13.2.0/format: In instantiation of 'constexpr void std::__format::_Checking_scanner<_CharT, _Args>::_M_parse_format_spec(std::size_t) [with _Tp = std::basic_string_view<char8_t>; _OtherArgs = {}; _CharT = char; _Args = {std::basic_string_view<char8_t, std::char_traits<char8_t> >}; std::size_t = long unsigned int]':
/opt/wandbox/gcc-13.2.0/include/c++/13.2.0/format:3610:33: required from here
prog.cc:8:23: in 'constexpr' expansion of 'std::basic_format_string<char, std::basic_string_view<char8_t, std::char_traits<char8_t> >&>("Example is: {}")'
/opt/wandbox/gcc-13.2.0/include/c++/13.2.0/format:3672:19: in 'constexpr' expansion of '__scanner.std::__format::_Checking_scanner<char, std::basic_string_view<char8_t, std::char_traits<char8_t> > >::<anonymous>.std::__format::_Scanner<char>::_M_scan()'
/opt/wandbox/gcc-13.2.0/include/c++/13.2.0/format:3482:30: in 'constexpr' expansion of '((std::__format::_Scanner<char>*)this)->std::__format::_Scanner<char>::_M_on_replacement_field()'
/opt/wandbox/gcc-13.2.0/include/c++/13.2.0/format:3534:15: in 'constexpr' expansion of '((std::__format::_Scanner<char>*)this)->std::__format::_Scanner<char>::_M_format_arg(__id)'
/opt/wandbox/gcc-13.2.0/include/c++/13.2.0/format:3623:38: error: use of deleted function 'std::formatter<_Tp, _CharT>::formatter() [with _Tp = std::basic_string_view<char8_t>; _CharT = char]'
3623 | formatter<_Tp, _CharT> __f;
| ^~~
/opt/wandbox/gcc-13.2.0/include/c++/13.2.0/format:140:7: note: declared here
140 | formatter() = delete; // No std::formatter specialization for this type.
| ^~~~~~~~~
/opt/wandbox/gcc-13.2.0/include/c++/13.2.0/format:3624:42: error: 'struct std::formatter<std::basic_string_view<char8_t>, char>' has no member named 'parse'
3624 | this->_M_pc.advance_to(__f.parse(this->_M_pc));
| ~~~~^~~~~
Exit Code:
1