[Bug c++/93320] internal compiler error: in is_base_type, at dwarf2out.c:12987

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=93320

--- Comment #3 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
We crash in is_base_type because it gets 

(gdb) p type
$1 = <type_pack_expansion 0x7fffe5b77c78>
and that is not handled:
12990         gcc_unreachable ();