[Bug c++/99909] The value of 'std::is_integral_v<auto>' is not usable in a constant expression

[hewillk at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99909

--- Comment #2 from 康桓瑋 <hewillk at gmail dot com> ---
(In reply to Christopher Yeleighton from comment #1)
> (In reply to 康桓瑋 from comment #0)
> > template <template <std::integral auto> class>
> > constexpr auto f() {}
> 
> That means auto is void, doesn’t it?

Yes, the second auto just means void.