Author
anonymous
almost 5 years ago
Language
C++
Compiler
gcc HEAD 11.0.0 20200630 (experimental)
Options
Warnings
Boost 1.73.0
C++2a(GNU)
no pedantic
Author
anonymous
almost 5 years ago
$ g++ prog.cc -Wall -Wextra -I/opt/wandbox/boost-1.73.0/gcc-head/include -std=gnu++2a prog.cc: In function 'int main()':
prog.cc:8:24: error: no match for call to '(const std::ranges::__sort_fn) (std::__cxx11::list<int>&)'
8 | std::ranges::sort(lst);
| ^
In file included from /opt/wandbox/gcc-head/include/c++/11.0.0/algorithm:64,
from prog.cc:1:
/opt/wandbox/gcc-head/include/c++/11.0.0/bits/ranges_algo.h:2018:7: note: candidate: 'template<class _Iter, class _Sent, class _Comp, class _Proj> requires (random_access_iterator<_Iter>) && (sentinel_for<_Sent, _Iter>) && (sortable<_Iter, _Comp, _Proj>) constexpr _Iter std::ranges::__sort_fn::operator()(_Iter, _Sent, _Comp, _Proj) const'
2018 | operator()(_Iter __first, _Sent __last,
| ^~~~~~~~
/opt/wandbox/gcc-head/include/c++/11.0.0/bits/ranges_algo.h:2018:7: note: template argument deduction/substitution failed:
prog.cc:8:24: note: candidate expects 4 arguments, 1 provided
8 | std::ranges::sort(lst);
| ^
In file included from /opt/wandbox/gcc-head/include/c++/11.0.0/algorithm:64,
from prog.cc:1:
/opt/wandbox/gcc-head/include/c++/11.0.0/bits/ranges_algo.h:2031:7: note: candidate: 'constexpr std::ranges::borrowed_iterator_t<_Range> std::ranges::__sort_fn::operator()(_Range&&, _Comp, _Proj) const [with _Range = std::__cxx11::list<int>&; _Comp = std::ranges::less; _Proj = std::identity; std::ranges::borrowed_iterator_t<_Range> = std::conditional<true, std::_List_iterator<int>, std::ranges::dangling>::type]'
2031 | operator()(_Range&& __r, _Comp __comp = {}, _Proj __proj = {}) const
| ^~~~~~~~
/opt/wandbox/gcc-head/include/c++/11.0.0/bits/ranges_algo.h:2031:7: note: constraints not satisfied
In file included from /opt/wandbox/gcc-head/include/c++/11.0.0/compare:39,
from /opt/wandbox/gcc-head/include/c++/11.0.0/bits/stl_pair.h:65,
from /opt/wandbox/gcc-head/include/c++/11.0.0/utility:70,
from /opt/wandbox/gcc-head/include/c++/11.0.0/algorithm:60,
from prog.cc:1:
/opt/wandbox/gcc-head/include/c++/11.0.0/concepts: In instantiation of 'constexpr std::ranges::borrowed_iterator_t<_Range> std::ranges::__sort_fn::operator()(_Range&&, _Comp, _Proj) const [with _Range = std::__cxx11::list<int>&; _Comp = std::ranges::less; _Proj = std::identity; std::ranges::borrowed_iterator_t<_Range> = std::conditional<true, std::_List_iterator<int>, std::ranges::dangling>::type]':
prog.cc:8:24: required from here
/opt/wandbox/gcc-head/include/c++/11.0.0/concepts:67:13: required for the satisfaction of 'derived_from<typename std::__detail::__iter_concept_impl<_Iter>::type, std::random_access_iterator_tag>' [with _Iter = std::_List_iterator<int>]
/opt/wandbox/gcc-head/include/c++/11.0.0/bits/iterator_concepts.h:599:13: required for the satisfaction of 'random_access_iterator<decltype (std::__detail::__ranges_begin(declval<_Container&>()))>' [with _Container = std::__cxx11::list<int, std::allocator<int> >&]
/opt/wandbox/gcc-head/include/c++/11.0.0/bits/range_access.h:923:13: required for the satisfaction of 'random_access_range<_Range>' [with _Range = std::__cxx11::list<int, std::allocator<int> >&]
/opt/wandbox/gcc-head/include/c++/11.0.0/concepts:67:28: note: 'std::random_access_iterator_tag' is not a base of 'std::bidirectional_iterator_tag'
67 | concept derived_from = __is_base_of(_Base, _Derived)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Exit Code:
1