[Bug c++/123728] Wsubobject-linkage warns despite no anonymous namespaces at all in a header

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123728

--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
If you had wrapped struct Test around with an anonymous namespace, there would
be no ODR issue at all.