[Bug middle-end/99370] calling a virtual function in insufficient space silently folded to __builtin_unreachable

[pinskia at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99370

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
The problem is since this transformation is done during optimization, it could
be done on a path that is not executed at all.  This is why
-fsanitize=undefined/-fsanitize=unreachable should be used if you want to
detect it at runtime.