[Bug libstdc++/100631] ranges::elements_view:: _Sentinel is missing __distance_from() that can access _M_current of _Iterator

[cvs-commit at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100631

--- Comment #11 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The releases/gcc-11 branch has been updated by Patrick Palka
<ppa...@gcc.gnu.org>:

https://gcc.gnu.org/g:3b93d61be5a5a93e95783b80c58b297e215badf1

commit r11-8542-g3b93d61be5a5a93e95783b80c58b297e215badf1
Author: Patrick Palka <ppa...@redhat.com>
Date:   Tue May 18 10:21:27 2021 -0400

    libstdc++: Fix access issue in elements_view::_Sentinel [PR100631]

    In the earlier commit r12-854 I forgot to also rewrite the other operator-
    overload in terms of the split-out member function _M_distance_from.

    libstdc++-v3/ChangeLog:

            PR libstdc++/100631
            * include/std/ranges (elements_view::_Sentinel::operator-): Use
            _M_distance_from in the other operator- overload too.
            * testsuite/std/ranges/adaptors/elements.cc (test06): Augment test.

    (cherry picked from commit 38751c4d5e15bd1c682ac4c868a2c4ce48ca5503)