https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64670
--- Comment #1 from Tobias Burnus <burnus at gcc dot gnu.org> --- Created attachment 34487 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=34487&action=edit test_case.ii - compile with g++ -fsanitize=vptr; gives bogus "undefined reference to `typeinfo for LogListener'" The attached file shows with "g++ -fsanitize=vptr" (among others): undefined reference to `typeinfo for LogListener' without "-fsanitize=vptr" only the expected undefined references appear.