[Bug middle-end/124340] Review of missing virtual destructors in multiple base classes

[redi at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=124340

--- Comment #5 from Jonathan Wakely <redi at gcc dot gnu.org> ---
It's more direct to prevent any derivation from the type:

class X final { ... };