[PATCH] libstdc++: Fix access issues in elements_view::_Sentinel [PR100631]

[Jonathan Wakely]

On 17/05/21 12:17 -0400, Patrick Palka via Libstdc++ wrote:
>Tested on x86_64-pc-linux-gnu, does this look OK for 10/11/trunk?

OK, thanks.

>libstdc++-v3/ChangeLog:
>
>	PR libstdc++/100631
>	* include/std/ranges (elements_view::_Iterator): Befriend
>	_Sentinel<!_Const>.
>	(elements_view::_Sentinel::_M_equal): Templatize.
>	(elements_view::_Sentinel::_M_distance_from): Split out from ...
>	(elements_view::_Sentinel::operator-): Here.
>	* testsuite/std/ranges/adaptors/elements.cc (test06, test07):
>	New tests.