<vector>: Superior string splitting (std::views::split) issue with VS2002 17.4 Preview 2

[fsb4000]

Describe the bug
An example from https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2020/p2210r0.html#design doesn't work but it worked in 17.3

Command-line test case

C:\Temp>type main.cpp
#include <string>
#include <ranges>
#include <vector>

int main()
{
	std::string ip = "127.0.0.1";
	auto parts = ip | std::views::split('.');
	auto as_vec = std::vector<std::string>(parts.begin(), parts.end());
	return 0;
}
C:\Temp>cl /std:c++latest /EHsc /W4 /WX .\main.cpp
Microsoft (R) C/C++ Optimizing Compiler Version 19.34.31823.3 for x64
Copyright (C) Microsoft Corporation.  All rights reserved.

/std:c++latest is provided as a preview of language features from the latest C++
working draft, and we're eager to hear about bugs and suggestions for improvements.
However, note that these features are provided as-is without support, and subject
to changes or removal as the working draft evolves. See
https://go.microsoft.com/fwlink/?linkid=2045807 for details.

main.cpp
C:\Dev\STL\out\build\x64\out\inc\xutility(217): error C2665: 'std::basic_string<char,std::char_traits<char>,std::allocator<char>>::basic_string': no overloaded function could convert all the argument types
C:\Dev\STL\out\build\x64\out\inc\xstring(2678): note: could be 'std::basic_string<char,std::char_traits<char>,std::allocator<char>>::basic_string(std::nullptr_t)'
C:\Dev\STL\out\build\x64\out\inc\xutility(217): note: 'std::basic_string<char,std::char_traits<char>,std::allocator<char>>::basic_string(std::nullptr_t)': cannot convert argument 1 from '_Ty' to 'std::nullptr_t'
        with
        [
            _Ty=std::ranges::subrange<std::_String_iterator<std::_String_val<std::_Simple_types<char>>>,std::_String_iterator<std::_String_val<std::_Simple_types<char>>>,std::ranges::subrange_kind::sized>
        ]
C:\Dev\STL\out\build\x64\out\inc\xutility(217): note: No user-defined-conversion operator available that can perform this conversion, or the operator cannot be called
C:\Dev\STL\out\build\x64\out\inc\xstring(2673): note: or       'std::basic_string<char,std::char_traits<char>,std::allocator<char>>::basic_string(const _Elem *const )'
        with
        [
            _Elem=char
        ]
C:\Dev\STL\out\build\x64\out\inc\xutility(217): note: 'std::basic_string<char,std::char_traits<char>,std::allocator<char>>::basic_string(const _Elem *const )': cannot convert argument 1 from '_Ty' to 'const _Elem *const '
        with
        [
            _Elem=char
        ]
        and
        [
            _Ty=std::ranges::subrange<std::_String_iterator<std::_String_val<std::_Simple_types<char>>>,std::_String_iterator<std::_String_val<std::_Simple_types<char>>>,std::ranges::subrange_kind::sized>
        ]
        and
        [
            _Elem=char
        ]
C:\Dev\STL\out\build\x64\out\inc\xutility(217): note: No user-defined-conversion operator available that can perform this conversion, or the operator cannot be called
C:\Dev\STL\out\build\x64\out\inc\xstring(3221): note: or       'std::basic_string<char,std::char_traits<char>,std::allocator<char>>::basic_string(std::initializer_list<_Elem>,const _Alloc &)'
        with
        [
            _Elem=char,
            _Alloc=std::allocator<char>
        ]
C:\Dev\STL\out\build\x64\out\inc\xutility(217): note: 'std::basic_string<char,std::char_traits<char>,std::allocator<char>>::basic_string(std::initializer_list<_Elem>,const _Alloc &)': cannot convert argument 1 from '_Ty' to 'std::initializer_list<_Elem>'
        with
        [
            _Elem=char,
            _Alloc=std::allocator<char>
        ]
        and
        [
            _Ty=std::ranges::subrange<std::_String_iterator<std::_String_val<std::_Simple_types<char>>>,std::_String_iterator<std::_String_val<std::_Simple_types<char>>>,std::ranges::subrange_kind::sized>
        ]
        and
        [
            _Elem=char
        ]
C:\Dev\STL\out\build\x64\out\inc\xutility(217): note: No user-defined-conversion operator available that can perform this conversion, or the operator cannot be called
C:\Dev\STL\out\build\x64\out\inc\xstring(2619): note: or       'std::basic_string<char,std::char_traits<char>,std::allocator<char>>::basic_string(const _Alloc &) noexcept'
        with
        [
            _Alloc=std::allocator<char>
        ]
C:\Dev\STL\out\build\x64\out\inc\xutility(217): note: 'std::basic_string<char,std::char_traits<char>,std::allocator<char>>::basic_string(const _Alloc &) noexcept': cannot convert argument 1 from '_Ty' to 'const _Alloc &'
        with
        [
            _Alloc=std::allocator<char>
        ]
        and
        [
            _Ty=std::ranges::subrange<std::_String_iterator<std::_String_val<std::_Simple_types<char>>>,std::_String_iterator<std::_String_val<std::_Simple_types<char>>>,std::ranges::subrange_kind::sized>
        ]
        and
        [
            _Alloc=std::allocator<char>
        ]
C:\Dev\STL\out\build\x64\out\inc\xutility(217): note: Reason: cannot convert from '_Ty' to 'const _Alloc'
        with
        [
            _Ty=std::ranges::subrange<std::_String_iterator<std::_String_val<std::_Simple_types<char>>>,std::_String_iterator<std::_String_val<std::_Simple_types<char>>>,std::ranges::subrange_kind::sized>
        ]
        and
        [
            _Alloc=std::allocator<char>
        ]
C:\Dev\STL\out\build\x64\out\inc\xutility(217): note: No user-defined-conversion operator available that can perform this conversion, or the operator cannot be called
C:\Dev\STL\out\build\x64\out\inc\xstring(3028): note: or       'std::basic_string<char,std::char_traits<char>,std::allocator<char>>::basic_string(const _Ty &,const unsigned __int64,const unsigned __int64,const _Alloc &)'
        with
        [
            _Alloc=std::allocator<char>
        ]
C:\Dev\STL\out\build\x64\out\inc\xutility(217): note: 'std::basic_string<char,std::char_traits<char>,std::allocator<char>>::basic_string(const _Ty &,const unsigned __int64,const unsigned __int64,const _Alloc &)': expects 4 arguments - 1 provided
        with
        [
            _Alloc=std::allocator<char>
        ]
C:\Dev\STL\out\build\x64\out\inc\xstring(3028): note: see declaration of 'std::basic_string<char,std::char_traits<char>,std::allocator<char>>::basic_string'
C:\Dev\STL\out\build\x64\out\inc\xstring(3021): note: or       'std::basic_string<char,std::char_traits<char>,std::allocator<char>>::basic_string(const _StringViewIsh &,const _Alloc &)'
        with
        [
            _Alloc=std::allocator<char>
        ]
C:\Dev\STL\out\build\x64\out\inc\xutility(217): note: 'std::basic_string<char,std::char_traits<char>,std::allocator<char>>::basic_string(const _StringViewIsh &,const _Alloc &)': could not deduce template argument for '__formal'
        with
        [
            _Alloc=std::allocator<char>
        ]
C:\Dev\STL\out\build\x64\out\inc\xstring(3021): note: see declaration of 'std::basic_string<char,std::char_traits<char>,std::allocator<char>>::basic_string'
C:\Dev\STL\out\build\x64\out\inc\xstring(2871): note: or       'std::basic_string<char,std::char_traits<char>,std::allocator<char>>::basic_string(std::from_range_t,_Rng &&,const _Alloc &)'
        with
        [
            _Alloc=std::allocator<char>
        ]
C:\Dev\STL\out\build\x64\out\inc\xutility(217): note: 'std::basic_string<char,std::char_traits<char>,std::allocator<char>>::basic_string(std::from_range_t,_Rng &&,const _Alloc &)': expects 3 arguments - 1 provided
        with
        [
            _Alloc=std::allocator<char>
        ]
C:\Dev\STL\out\build\x64\out\inc\xstring(2871): note: see declaration of 'std::basic_string<char,std::char_traits<char>,std::allocator<char>>::basic_string'
C:\Dev\STL\out\build\x64\out\inc\xstring(2703): note: or       'std::basic_string<char,std::char_traits<char>,std::allocator<char>>::basic_string(_Iter,_Iter,const _Alloc &)'
        with
        [
            _Alloc=std::allocator<char>
        ]
C:\Dev\STL\out\build\x64\out\inc\xutility(217): note: 'std::basic_string<char,std::char_traits<char>,std::allocator<char>>::basic_string(_Iter,_Iter,const _Alloc &)': expects 3 arguments - 1 provided
        with
        [
            _Alloc=std::allocator<char>
        ]
C:\Dev\STL\out\build\x64\out\inc\xstring(2703): note: see declaration of 'std::basic_string<char,std::char_traits<char>,std::allocator<char>>::basic_string'
C:\Dev\STL\out\build\x64\out\inc\xstring(2697): note: or       'std::basic_string<char,std::char_traits<char>,std::allocator<char>>::basic_string(const unsigned __int64,const _Elem,const _Alloc &)'
        with
        [
            _Elem=char,
            _Alloc=std::allocator<char>
        ]
C:\Dev\STL\out\build\x64\out\inc\xutility(217): note: 'std::basic_string<char,std::char_traits<char>,std::allocator<char>>::basic_string(const unsigned __int64,const _Elem,const _Alloc &)': expects 3 arguments - 1 provided
        with
        [
            _Elem=char,
            _Alloc=std::allocator<char>
        ]
C:\Dev\STL\out\build\x64\out\inc\xstring(2697): note: see declaration of 'std::basic_string<char,std::char_traits<char>,std::allocator<char>>::basic_string'
C:\Dev\STL\out\build\x64\out\inc\xstring(2684): note: or       'std::basic_string<char,std::char_traits<char>,std::allocator<char>>::basic_string(const _Elem *const ,const _Alloc &)'
        with
        [
            _Elem=char,
            _Alloc=std::allocator<char>
        ]
C:\Dev\STL\out\build\x64\out\inc\xutility(217): note: 'std::basic_string<char,std::char_traits<char>,std::allocator<char>>::basic_string(const _Elem *const ,const _Alloc &)': expects 2 arguments - 1 provided
        with
        [
            _Elem=char,
            _Alloc=std::allocator<char>
        ]
C:\Dev\STL\out\build\x64\out\inc\xstring(2684): note: see declaration of 'std::basic_string<char,std::char_traits<char>,std::allocator<char>>::basic_string'
C:\Dev\STL\out\build\x64\out\inc\xutility(217): note: while trying to match the argument list '(_Ty)'
        with
        [
            _Ty=std::ranges::subrange<std::_String_iterator<std::_String_val<std::_Simple_types<char>>>,std::_String_iterator<std::_String_val<std::_Simple_types<char>>>,std::ranges::subrange_kind::sized>
        ]
C:\Dev\STL\out\build\x64\out\inc\xutility(216): note: see reference to function template instantiation '_Ty *std::construct_at<_Objty,std::ranges::subrange<std::_String_iterator<std::_String_val<std::_Simple_types<_Elem>>>,std::_String_iterator<std::_String_val<std::_Simple_types<_Elem>>>,std::ranges::subrange_kind::sized>,0x0>(_Ty *const ,std::ranges::subrange<std::_String_iterator<std::_String_val<std::_Simple_types<_Elem>>>,std::_String_iterator<std::_String_val<std::_Simple_types<_Elem>>>,std::ranges::subrange_kind::sized> &&) noexcept(<expr>)' being compiled
        with
        [
            _Ty=std::basic_string<char,std::char_traits<char>,std::allocator<char>>,
            _Objty=std::basic_string<char,std::char_traits<char>,std::allocator<char>>,
            _Elem=char
        ]
C:\Dev\STL\out\build\x64\out\inc\xmemory(1662): note: see reference to function template instantiation 'void std::_Default_allocator_traits<_Alloc>::construct<_Ty,std::ranges::subrange<std::_String_iterator<std::_String_val<std::_Simple_types<_Elem>>>,std::_String_iterator<std::_String_val<std::_Simple_types<_Elem>>>,std::ranges::subrange_kind::sized>>(_Alloc &,_Objty *const ,std::ranges::subrange<std::_String_iterator<std::_String_val<std::_Simple_types<_Elem>>>,std::_String_iterator<std::_String_val<std::_Simple_types<_Elem>>>,std::ranges::subrange_kind::sized> &&)' being compiled
        with
        [
            _Alloc=std::allocator<std::string>,
            _Ty=std::basic_string<char,std::char_traits<char>,std::allocator<char>>,
            _Elem=char,
            _Objty=std::basic_string<char,std::char_traits<char>,std::allocator<char>>
        ]
C:\Dev\STL\out\build\x64\out\inc\xmemory(1663): note: see reference to function template instantiation 'void std::_Default_allocator_traits<_Alloc>::construct<_Ty,std::ranges::subrange<std::_String_iterator<std::_String_val<std::_Simple_types<_Elem>>>,std::_String_iterator<std::_String_val<std::_Simple_types<_Elem>>>,std::ranges::subrange_kind::sized>>(_Alloc &,_Objty *const ,std::ranges::subrange<std::_String_iterator<std::_String_val<std::_Simple_types<_Elem>>>,std::_String_iterator<std::_String_val<std::_Simple_types<_Elem>>>,std::ranges::subrange_kind::sized> &&)' being compiled
        with
        [
            _Alloc=std::allocator<std::string>,
            _Ty=std::basic_string<char,std::char_traits<char>,std::allocator<char>>,
            _Elem=char,
            _Objty=std::basic_string<char,std::char_traits<char>,std::allocator<char>>
        ]
C:\Dev\STL\out\build\x64\out\inc\xmemory(1680): note: see reference to function template instantiation 'void std::_Uninitialized_backout_al<std::allocator<std::string>>::_Emplace_back<std::ranges::subrange<std::_String_iterator<std::_String_val<std::_Simple_types<_Elem>>>,std::_String_iterator<std::_String_val<std::_Simple_types<_Elem>>>,std::ranges::subrange_kind::sized>>(std::ranges::subrange<std::_String_iterator<std::_String_val<std::_Simple_types<_Elem>>>,std::_String_iterator<std::_String_val<std::_Simple_types<_Elem>>>,std::ranges::subrange_kind::sized> &&)' being compiled
        with
        [
            _Elem=char
        ]
C:\Dev\STL\out\build\x64\out\inc\xmemory(1717): note: see reference to function template instantiation 'void std::_Uninitialized_backout_al<std::allocator<std::string>>::_Emplace_back<std::ranges::subrange<std::_String_iterator<std::_String_val<std::_Simple_types<_Elem>>>,std::_String_iterator<std::_String_val<std::_Simple_types<_Elem>>>,std::ranges::subrange_kind::sized>>(std::ranges::subrange<std::_String_iterator<std::_String_val<std::_Simple_types<_Elem>>>,std::_String_iterator<std::_String_val<std::_Simple_types<_Elem>>>,std::ranges::subrange_kind::sized> &&)' being compiled
        with
        [
            _Elem=char
        ]
C:\Dev\STL\out\build\x64\out\inc\vector(2119): note: see reference to function template instantiation 'std::basic_string<char,std::char_traits<char>,std::allocator<char>> *std::_Uninitialized_copy<_Ty,_Ty,std::allocator<std::string>>(_InIt,_Se,std::basic_string<char,std::char_traits<char>,std::allocator<char>> *,_Alloc &)' being compiled
        with
        [
            _Ty=std::ranges::split_view<std::ranges::ref_view<std::basic_string<char,std::char_traits<char>,std::allocator<char>>>,std::ranges::single_view<char>>::_Iterator,
            _InIt=std::ranges::split_view<std::ranges::ref_view<std::basic_string<char,std::char_traits<char>,std::allocator<char>>>,std::ranges::single_view<char>>::_Iterator,
            _Se=std::ranges::split_view<std::ranges::ref_view<std::basic_string<char,std::char_traits<char>,std::allocator<char>>>,std::ranges::single_view<char>>::_Iterator,
            _Alloc=std::allocator<std::string>
        ]
C:\Dev\STL\out\build\x64\out\inc\vector(705): note: see reference to function template instantiation 'void std::vector<std::string,std::allocator<std::string>>::_Construct_n<std::ranges::split_view<std::ranges::ref_view<std::basic_string<char,std::char_traits<char>,std::allocator<char>>>,std::ranges::single_view<char>>::_Iterator,std::ranges::split_view<std::ranges::ref_view<std::basic_string<char,std::char_traits<char>,std::allocator<char>>>,std::ranges::single_view<char>>::_Iterator>(const unsigned __int64,std::ranges::split_view<std::ranges::ref_view<std::basic_string<char,std::char_traits<char>,std::allocator<char>>>,std::ranges::single_view<char>>::_Iterator &&,std::ranges::split_view<std::ranges::ref_view<std::basic_string<char,std::char_traits<char>,std::allocator<char>>>,std::ranges::single_view<char>>::_Iterator &&)' being compiled
C:\Dev\STL\out\build\x64\out\inc\vector(705): note: see reference to function template instantiation 'void std::vector<std::string,std::allocator<std::string>>::_Construct_n<std::ranges::split_view<std::ranges::ref_view<std::basic_string<char,std::char_traits<char>,std::allocator<char>>>,std::ranges::single_view<char>>::_Iterator,std::ranges::split_view<std::ranges::ref_view<std::basic_string<char,std::char_traits<char>,std::allocator<char>>>,std::ranges::single_view<char>>::_Iterator>(const unsigned __int64,std::ranges::split_view<std::ranges::ref_view<std::basic_string<char,std::char_traits<char>,std::allocator<char>>>,std::ranges::single_view<char>>::_Iterator &&,std::ranges::split_view<std::ranges::ref_view<std::basic_string<char,std::char_traits<char>,std::allocator<char>>>,std::ranges::single_view<char>>::_Iterator &&)' being compiled
.\main.cpp(9): note: see reference to function template instantiation 'std::vector<std::string,std::allocator<std::string>>::vector<std::ranges::split_view<std::ranges::ref_view<std::basic_string<char,std::char_traits<char>,std::allocator<char>>>,std::ranges::single_view<char>>::_Iterator,0>(_Iter,_Iter,const _Alloc &)' being compiled
        with
        [
            _Iter=std::ranges::split_view<std::ranges::ref_view<std::basic_string<char,std::char_traits<char>,std::allocator<char>>>,std::ranges::single_view<char>>::_Iterator,
            _Alloc=std::allocator<std::string>
        ]
.\main.cpp(9): note: see reference to function template instantiation 'std::vector<std::string,std::allocator<std::string>>::vector<std::ranges::split_view<std::ranges::ref_view<std::basic_string<char,std::char_traits<char>,std::allocator<char>>>,std::ranges::single_view<char>>::_Iterator,0>(_Iter,_Iter,const _Alloc &)' being compiled
        with
        [
            _Iter=std::ranges::split_view<std::ranges::ref_view<std::basic_string<char,std::char_traits<char>,std::allocator<char>>>,std::ranges::single_view<char>>::_Iterator,
            _Alloc=std::allocator<std::string>
        ]
C:\Dev\STL\out\build\x64\out\inc\xmemory(680): error C2665: 'std::basic_string<char,std::char_traits<char>,std::allocator<char>>::basic_string': no overloaded function could convert all the argument types
C:\Dev\STL\out\build\x64\out\inc\xstring(2678): note: could be 'std::basic_string<char,std::char_traits<char>,std::allocator<char>>::basic_string(std::nullptr_t)'
C:\Dev\STL\out\build\x64\out\inc\xmemory(680): note: 'std::basic_string<char,std::char_traits<char>,std::allocator<char>>::basic_string(std::nullptr_t)': cannot convert argument 1 from '_Ty' to 'std::nullptr_t'
        with
        [
            _Ty=std::ranges::subrange<std::_String_iterator<std::_String_val<std::_Simple_types<char>>>,std::_String_iterator<std::_String_val<std::_Simple_types<char>>>,std::ranges::subrange_kind::sized>
        ]
C:\Dev\STL\out\build\x64\out\inc\xmemory(680): note: No user-defined-conversion operator available that can perform this conversion, or the operator cannot be called
C:\Dev\STL\out\build\x64\out\inc\xstring(2673): note: or       'std::basic_string<char,std::char_traits<char>,std::allocator<char>>::basic_string(const _Elem *const )'
        with
        [
            _Elem=char
        ]
C:\Dev\STL\out\build\x64\out\inc\xmemory(680): note: 'std::basic_string<char,std::char_traits<char>,std::allocator<char>>::basic_string(const _Elem *const )': cannot convert argument 1 from '_Ty' to 'const _Elem *const '
        with
        [
            _Elem=char
        ]
        and
        [
            _Ty=std::ranges::subrange<std::_String_iterator<std::_String_val<std::_Simple_types<char>>>,std::_String_iterator<std::_String_val<std::_Simple_types<char>>>,std::ranges::subrange_kind::sized>
        ]
        and
        [
            _Elem=char
        ]
C:\Dev\STL\out\build\x64\out\inc\xmemory(680): note: No user-defined-conversion operator available that can perform this conversion, or the operator cannot be called
C:\Dev\STL\out\build\x64\out\inc\xstring(3221): note: or       'std::basic_string<char,std::char_traits<char>,std::allocator<char>>::basic_string(std::initializer_list<_Elem>,const _Alloc &)'
        with
        [
            _Elem=char,
            _Alloc=std::allocator<char>
        ]
C:\Dev\STL\out\build\x64\out\inc\xmemory(680): note: 'std::basic_string<char,std::char_traits<char>,std::allocator<char>>::basic_string(std::initializer_list<_Elem>,const _Alloc &)': cannot convert argument 1 from '_Ty' to 'std::initializer_list<_Elem>'
        with
        [
            _Elem=char,
            _Alloc=std::allocator<char>
        ]
        and
        [
            _Ty=std::ranges::subrange<std::_String_iterator<std::_String_val<std::_Simple_types<char>>>,std::_String_iterator<std::_String_val<std::_Simple_types<char>>>,std::ranges::subrange_kind::sized>
        ]
        and
        [
            _Elem=char
        ]
C:\Dev\STL\out\build\x64\out\inc\xmemory(680): note: No user-defined-conversion operator available that can perform this conversion, or the operator cannot be called
C:\Dev\STL\out\build\x64\out\inc\xstring(2619): note: or       'std::basic_string<char,std::char_traits<char>,std::allocator<char>>::basic_string(const _Alloc &) noexcept'
        with
        [
            _Alloc=std::allocator<char>
        ]
C:\Dev\STL\out\build\x64\out\inc\xmemory(680): note: 'std::basic_string<char,std::char_traits<char>,std::allocator<char>>::basic_string(const _Alloc &) noexcept': cannot convert argument 1 from '_Ty' to 'const _Alloc &'
        with
        [
            _Alloc=std::allocator<char>
        ]
        and
        [
            _Ty=std::ranges::subrange<std::_String_iterator<std::_String_val<std::_Simple_types<char>>>,std::_String_iterator<std::_String_val<std::_Simple_types<char>>>,std::ranges::subrange_kind::sized>
        ]
        and
        [
            _Alloc=std::allocator<char>
        ]
C:\Dev\STL\out\build\x64\out\inc\xmemory(673): note: Reason: cannot convert from '_Ty' to 'const _Alloc'
        with
        [
            _Ty=std::ranges::subrange<std::_String_iterator<std::_String_val<std::_Simple_types<char>>>,std::_String_iterator<std::_String_val<std::_Simple_types<char>>>,std::ranges::subrange_kind::sized>
        ]
        and
        [
            _Alloc=std::allocator<char>
        ]
C:\Dev\STL\out\build\x64\out\inc\xmemory(680): note: No user-defined-conversion operator available that can perform this conversion, or the operator cannot be called
C:\Dev\STL\out\build\x64\out\inc\xstring(3028): note: or       'std::basic_string<char,std::char_traits<char>,std::allocator<char>>::basic_string(const _Ty &,const unsigned __int64,const unsigned __int64,const _Alloc &)'
        with
        [
            _Alloc=std::allocator<char>
        ]
C:\Dev\STL\out\build\x64\out\inc\xmemory(680): note: 'std::basic_string<char,std::char_traits<char>,std::allocator<char>>::basic_string(const _Ty &,const unsigned __int64,const unsigned __int64,const _Alloc &)': expects 4 arguments - 1 provided
        with
        [
            _Alloc=std::allocator<char>
        ]
C:\Dev\STL\out\build\x64\out\inc\xstring(3028): note: see declaration of 'std::basic_string<char,std::char_traits<char>,std::allocator<char>>::basic_string'
C:\Dev\STL\out\build\x64\out\inc\xstring(3021): note: or       'std::basic_string<char,std::char_traits<char>,std::allocator<char>>::basic_string(const _StringViewIsh &,const _Alloc &)'
        with
        [
            _Alloc=std::allocator<char>
        ]
C:\Dev\STL\out\build\x64\out\inc\xmemory(673): note: 'std::basic_string<char,std::char_traits<char>,std::allocator<char>>::basic_string(const _StringViewIsh &,const _Alloc &)': could not deduce template argument for '__formal'
        with
        [
            _Alloc=std::allocator<char>
        ]
C:\Dev\STL\out\build\x64\out\inc\xstring(3021): note: see declaration of 'std::basic_string<char,std::char_traits<char>,std::allocator<char>>::basic_string'
C:\Dev\STL\out\build\x64\out\inc\xstring(2871): note: or       'std::basic_string<char,std::char_traits<char>,std::allocator<char>>::basic_string(std::from_range_t,_Rng &&,const _Alloc &)'
        with
        [
            _Alloc=std::allocator<char>
        ]
C:\Dev\STL\out\build\x64\out\inc\xmemory(680): note: 'std::basic_string<char,std::char_traits<char>,std::allocator<char>>::basic_string(std::from_range_t,_Rng &&,const _Alloc &)': expects 3 arguments - 1 provided
        with
        [
            _Alloc=std::allocator<char>
        ]
C:\Dev\STL\out\build\x64\out\inc\xstring(2871): note: see declaration of 'std::basic_string<char,std::char_traits<char>,std::allocator<char>>::basic_string'
C:\Dev\STL\out\build\x64\out\inc\xstring(2703): note: or       'std::basic_string<char,std::char_traits<char>,std::allocator<char>>::basic_string(_Iter,_Iter,const _Alloc &)'
        with
        [
            _Alloc=std::allocator<char>
        ]
C:\Dev\STL\out\build\x64\out\inc\xmemory(680): note: 'std::basic_string<char,std::char_traits<char>,std::allocator<char>>::basic_string(_Iter,_Iter,const _Alloc &)': expects 3 arguments - 1 provided
        with
        [
            _Alloc=std::allocator<char>
        ]
C:\Dev\STL\out\build\x64\out\inc\xstring(2703): note: see declaration of 'std::basic_string<char,std::char_traits<char>,std::allocator<char>>::basic_string'
C:\Dev\STL\out\build\x64\out\inc\xstring(2697): note: or       'std::basic_string<char,std::char_traits<char>,std::allocator<char>>::basic_string(const unsigned __int64,const _Elem,const _Alloc &)'
        with
        [
            _Elem=char,
            _Alloc=std::allocator<char>
        ]
C:\Dev\STL\out\build\x64\out\inc\xmemory(680): note: 'std::basic_string<char,std::char_traits<char>,std::allocator<char>>::basic_string(const unsigned __int64,const _Elem,const _Alloc &)': expects 3 arguments - 1 provided
        with
        [
            _Elem=char,
            _Alloc=std::allocator<char>
        ]
C:\Dev\STL\out\build\x64\out\inc\xstring(2697): note: see declaration of 'std::basic_string<char,std::char_traits<char>,std::allocator<char>>::basic_string'
C:\Dev\STL\out\build\x64\out\inc\xstring(2684): note: or       'std::basic_string<char,std::char_traits<char>,std::allocator<char>>::basic_string(const _Elem *const ,const _Alloc &)'
        with
        [
            _Elem=char,
            _Alloc=std::allocator<char>
        ]
C:\Dev\STL\out\build\x64\out\inc\xmemory(680): note: 'std::basic_string<char,std::char_traits<char>,std::allocator<char>>::basic_string(const _Elem *const ,const _Alloc &)': expects 2 arguments - 1 provided
        with
        [
            _Elem=char,
            _Alloc=std::allocator<char>
        ]
C:\Dev\STL\out\build\x64\out\inc\xstring(2684): note: see declaration of 'std::basic_string<char,std::char_traits<char>,std::allocator<char>>::basic_string'
C:\Dev\STL\out\build\x64\out\inc\xmemory(673): note: while trying to match the argument list '(_Ty)'
        with
        [
            _Ty=std::ranges::subrange<std::_String_iterator<std::_String_val<std::_Simple_types<char>>>,std::_String_iterator<std::_String_val<std::_Simple_types<char>>>,std::ranges::subrange_kind::sized>
        ]

Expected behavior
Should compile

STL version

• Option 2: git commit hash

https://github.com/microsoft/STL/commit/67a96a910fb53aa4bc12801fb9683d30b2647c16

Additional context
Devcom-10150447

[fsb4000]

I checked code and I found that in 17.3 we had only

STL/stl/inc/vector

Lines 699 to 714 in 60decd0

	if constexpr (_Is_fwd_iter_v<_Iter>) {
	const auto _Count = _Convert_size<size_type>(static_cast<size_t>(_STD distance(_UFirst, _ULast)));
	_Construct_n(_Count, _STD move(_UFirst), _STD move(_ULast));
	} else {
	auto&& _Alproxy = _GET_PROXY_ALLOCATOR(_Alty, _Getal());
	_Container_proxy_ptr<_Alty> _Proxy(_Alproxy, _Mypair._Myval2);
	_Tidy_guard<vector> _Guard{this};
	for (; _UFirst != _ULast; ++_UFirst) {
	// performance note: _Emplace_one_at_back's strong guarantee is unnecessary here.
	_Emplace_one_at_back(*_UFirst);
	}
	_Guard._Target = nullptr;
	_Proxy._Release();
	}

and now

STL/stl/inc/vector

Lines 697 to 717 in 67a96a9

	if constexpr (_Is_cpp17_fwd_iter_v<_Iter>) {
	const auto _Length = static_cast<size_t>(_STD distance(_UFirst, _ULast));
	const auto _Count = _Convert_size<size_type>(_Length);
	_Construct_n(_Count, _STD move(_UFirst), _STD move(_ULast));
	#ifdef __cpp_lib_concepts
	} else if constexpr (forward_iterator<_Iter>) {
	const auto _Length = _To_unsigned_like(_RANGES distance(_UFirst, _ULast));
	const auto _Count = _Convert_size<size_type>(_Length);
	_Construct_n(_Count, _STD move(_UFirst), _STD move(_ULast));
	#endif // __cpp_lib_concepts
	} else {
	auto&& _Alproxy = _GET_PROXY_ALLOCATOR(_Alty, _Getal());
	_Container_proxy_ptr<_Alty> _Proxy(_Alproxy, _Mypair._Myval2);
	_Tidy_guard<vector> _Guard{this};
	_Append_uncounted_range(_STD move(_UFirst), _STD move(_ULast));
	_Guard._Target = nullptr;
	_Proxy._Release();
	}
	}

and test code:

#include <string>
#include <ranges>
#include <vector>
#include <iostream>
#include <string_view>
using namespace std;
int main()
{
	auto ip = "127.0.0.1"s;
	auto parts = ip | std::views::split('.');
	//auto as_vec = std::vector<std::string>(
	//	parts.begin(), parts.end());
	//cout << _Is_fwd_iter_v<decltype(parts.begin())> << '\n'; // was 0 in 17.3
	cout << _Is_cpp17_fwd_iter_v<decltype(parts.begin())> << '\n'; // 0 in 17.4
	cout << forward_iterator<decltype(parts.begin())> << '\n';  // 1 in 17.4
	return 0;
}

[fsb4000]

Oh, it seems it doesn't matter.
I deleted

} else if constexpr (forward_iterator<_Iter>) { 
             const auto _Length = _To_unsigned_like(_RANGES distance(_UFirst, _ULast)); 
             const auto _Count  = _Convert_size<size_type>(_Length); 
             _Construct_n(_Count, _STD move(_UFirst), _STD move(_ULast)); 
}

and the code still fails.

[fsb4000]

I found the commit: #2947 via git bisect

git bisect good
6db1eb4489659f801eea1652ae1024bbac252a2b is the first bad commit
commit 6db1eb4489659f801eea1652ae1024bbac252a2b
Author: Sam Huang <samestimable2016@gmail.com>
Date:   Wed Jul 27 20:55:36 2022 -0700

    Implement P2499R0: `string_view` Range Constructor Should Be `explicit` (#2947)

 stl/inc/xstring                              | 2 +-
 stl/inc/yvals_core.h                         | 1 +
 tests/libcxx/expected_results.txt            | 4 ++++
 tests/libcxx/skipped_tests.txt               | 4 ++++
 tests/std/tests/P0220R1_string_view/test.cpp | 4 +++-
 5 files changed, 13 insertions(+), 2 deletions(-)

[fsb4000]

Well, I think this is expected now because: static_assert(!is_convertible_v<vector<char>, string_view>);
And they just need to change their code.
This code works:

#include <string>
#include <ranges>
#include <vector>
#include <iostream>
using namespace std;
int main()
{
	auto ip = "127.0.0.1"s;
	auto parts = ip | views::split('.');
	auto as_vec =  ranges::to<vector<string>>(parts);
	for (const auto& s: as_vec) {
		cout << s << '\n';
	}
	return 0;
}

$ main.exe
127
0
0
1

[fsb4000]

I answered that this is by design: https://developercommunity.visualstudio.com/t/10150447#T-N10150782

[strega-nil-ms]

Closing as, as Igor Zhukov (@fsb4000) points out, this is by design. Thanks!