[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 gcc dot gnu.org]

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

--- Comment #7 from Jan Hubicka <hubicka at gcc dot gnu.org> ---
I am happy with the patch in #5, so you can consider it pre-approved. It is
probably your call whether to declare the code invalid at first place.