[Bug c++/100629] Regression from 10 symbol mismatch between class definition and use with/without optimization

[redi at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100629

--- Comment #23 from Jonathan Wakely <redi at gcc dot gnu.org> ---
OK, the bad mangling happens with -O1 -fdevirtualize and not with -O1 alone.