[Bug c++/67650] undef reference with -fdevirtualize

[vincent.lextrait at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67650

--- Comment #23 from Vincent <vincent.lextrait at gmail dot com> ---
See comment #10. The error is sensitive to unrelated changes. There is some
(front-end?) corruption somewhere.

(In reply to Jonathan Wakely from comment #21)
> Comment 19 shows a bogus warning triggered by -fdevirtualize but I'm not
> convinced the original report of a link-error bug is valid.