[Bug c++/91826] [8/9/10 Regression] Unexpected behavior when class defined with namespace alias

[cvs-commit at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=91826

--- Comment #3 from CVS Commits <cvs-commit at gcc dot gnu.org> ---
The master branch has been updated by Nathan Sidwell <nathan@gcc.gnu.org>:

https://gcc.gnu.org/g:feaa1640b3543c7c3a1f3a788bc449a3638cb780

commit r10-6253-gfeaa1640b3543c7c3a1f3a788bc449a3638cb780
Author: Nathan Sidwell <nathan@acm.org>
Date:   Mon Jan 27 05:49:43 2020 -0800

    c++: Bogus error using namespace alias [PR91826]

    My changes to is_nested_namespace broke is_ancestor's use where a namespace
    alias might be passed in.  This changes is_ancestor to look through the
alias.

        PR c++/91826
        * name-lookup.c (is_ancestor): Allow CHILD to be a namespace alias.