[Bug c++/98712] Incorrect defaulted operator== at compile time and runtime when declared constexpr and inheriting (c++20)

[ryan_greenblatt at brown dot edu via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98712

--- Comment #1 from Ryan Greenblatt <ryan_greenblatt at brown dot edu> ---
I've also noticed some incorrect compiler errors when trying to default
constexpr operator== in similar circumstances. I think the causes are the
likely the same.