[Bug libstdc++/100900] New: error: missing 'typename' prior to dependent type name in elements_view

[avi--- via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100900

            Bug ID: 100900
           Summary: error: missing 'typename' prior to dependent type name
                    in <ranges> elements_view
           Product: gcc
           Version: 11.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: libstdc++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: a...@cloudius-systems.com
  Target Milestone: ---

clang++ complains:

/usr/lib/gcc/x86_64-redhat-linux/11/../../../../include/c++/11/ranges:3392:19:
error: missing 'typename' prior to dependent type name
'iterator_traits<iterator_t<_Base>>::iterator_category'
            using _Cat = iterator_traits<iterator_t<_Base>>::iterator_category;