[Bug c++/103408] ICE when requires auto(x) in C++23

[hewillk at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=103408

--- Comment #3 from 康桓瑋 <hewillk at gmail dot com> ---
(In reply to Marek Polacek from comment #2)
> Started with r12-5386, obviously.

I don't know if it is caused by the same bug.

template<auto>
concept C = auto([]{});
static_assert(C<0>);

https://godbolt.org/z/nj6qbGxP7