[Bug c++/87155] [8/9 Regression] unnamed namespace redeclaration error when inline namespace is present

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=87155

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

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |nathan at gcc dot gnu.org
      Known to work|                            |7.3.0
            Summary|unnamed namespace           |[8/9 Regression] unnamed
                   |redeclaration error when    |namespace redeclaration
                   |inline namespace is present |error when inline namespace
                   |                            |is present
      Known to fail|                            |8.2.0, 9.0

--- Comment #1 from Jonathan Wakely <redi at gcc dot gnu.org> ---
This is a regression since GCC 7, starting 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.