[Bug c++/88049] [7/8/9 Regression] ICE in lto_symtab_prevailing_virtual_decl at gcc/lto/lto-symtab.c:1075 since r231671

[hubicka at ucw dot cz]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88049

--- Comment #3 from Jan Hubicka <hubicka at ucw dot cz> ---
> > We ICE on the fact that _ZTV1aIN12_GLOBAL__N_11fEE which is vtable for
> > anonymous namespace type but it has EXTERNAL flag set.
> > 
> > Jason, why this happens? I am changing type to C++: if there is indeed legal
> > reason to have exported vtables for anonymous types, then we can simply drop
> > the sanity check.
> 
> It isn't exported; it has DECL_EXTERNAL set because it isn't defined, and it
> isn't defined because nothing uses it, so it isn't needed.  Note that it isn't
> TREE_PUBLIC.

Hmm, so perhaps just adjusting sanity check to also check ||
!TREE_PUBLIC?

Honza