https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109181
--- Comment #2 from waffl3x <waffl3x at protonmail dot com> ---
(In reply to Andrew Pinski from comment #1)
> Confirmed.
> Goes away the way back when -fconcepts support was originally added in GCC
> 6. You can see that with this testcase:
> ```
> struct A {
> template<typename>
> using B = int;
> };
>
> template<typename T>
> bool go = requires{typename A::template B<T>;};
> ```
>
> Note back in GCC 6, you needed `-std=c++17 -fconcepts` and also requires was
> only allowed for templates too ..
Ah damn, I'll try to keep in mind that I can use the old enabling flags to go
further back. I'm glad this one wasn't a duplicate, heres hoping I don't find
another bug today
