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

[vincent.lextrait at gmail dot com]

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

--- Comment #18 from Vincent <vincent.lextrait at gmail dot com> ---
Still in 8.1, now with a different diagnosis:

g++-8 -c -O3 67650.cpp
67650.cpp:33:8: warning: 'void AN<OC, RC>::rp() [with OC = LR<I, IE, (&
ET)>::LLC; RC = BLKC]' used but never defined
   void rp(){}
        ^~
Ironically the message complains about the non definition of the member
function, and displays that very definition...