[Bug c++/90291] [8/9/10 Regression] Inline namespace erroneously extends another namespace

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90291

Jonathan Wakely <redi at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
      Known to work|                            |7.3.0
           Keywords|                            |wrong-code
   Last reconfirmed|                            |2019-04-30
                 CC|                            |nathan at gcc dot gnu.org
     Ever confirmed|0                           |1
            Summary|[7/8 Regression] Inline     |[8/9/10 Regression] Inline
                   |namespace erroneously       |namespace erroneously
                   |extends another namespace   |extends another namespace
      Known to fail|                            |10.0, 8.3.1, 9.0

--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
[7/8 Regression] means it's a regression in GCC 7, so is wrong for this bug. It
should be [8/9/10 Regression].

This started with r248521

            gcc/
            Implement DR2061
            * name-lookup.c (push_inline_namespaces): New.
            (push_namespace): Look inside inline namespaces.

            testsuite/
            * g++.dg/cpp0x/dr2061.C: New.
            * g++.dg/parse/namespace-alias-1.C: Add more test.