[Bug c++/120877] internal compiler error: Segmentation fault since 10.1 with std=c++20

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=120877

--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Reduced:
```
v1 v = 5;
get<decltype(v)::index_of_type<int>>(v) =5;
```