[Bug c++/125208] [reflection] Another internal compiler error when using bases_of in cp_tree_equal

[pdimov at gmail dot com via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=125208

--- Comment #13 from Peter Dimov <pdimov at gmail dot com> ---
Further reduced to only std headers: https://godbolt.org/z/q8vW6r3vM