[Bug libstdc++/65329] [C++14] constexpr complex::real(), imag() are non-const

[gcc@axel-naumann.de]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65329

--- Comment #2 from Axel Naumann <gcc@axel-naumann.de> ---
Thanks Jonathan,

Indeed, that does it. Apologies for not going to the source of it!

Axel.