[Bug libstdc++/90203] Can't compare "const std::pair" with "std::pair"

[pinskia at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=90203

--- Comment #5 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
Note C++23 changes this via
https://cplusplus.github.io/LWG/lwg-defects.html#3865 .