[Bug c++/66830] Problem with C++ unique symbols in plugins

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66830

--- Comment #2 from Jonathan Wakely <redi at gcc dot gnu.org> ---
(In reply to pleuba from comment #0)
> Is this problem already known ?

Yes, it has been known for a long time, but it's not an ideal situation and
there is currently no better solution than -fno-gnu-unique