[Bug c++/119259] compilation error: *constexpr* operator==(const T&) const = default` forces compilation of std::vector's operator== function

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119259

--- Comment #11 from Patrick Palka <ppalka at gcc dot gnu.org> ---
I recommend your workaround of removing the 'constexpr' specifier when
defaulting a function.  A defaulted function is already implicitly constexpr if
its definition qualifies, regardless of whether it's explicitly declared as
'constexpr'.