[Bug c++/97446] gcc accepts an unnamed struct

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97446

--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
Just like PR 97401.

Please try to remember that diagnostics are not required for errors in
uninstantiated templates, so it's not a bug.