[Bug c++/57979] G++ accepts constant expression defined using floating point non-constexpr glvalue

[ville.voutilainen at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=57979

--- Comment #6 from Ville Voutilainen <ville.voutilainen at gmail dot com> ---
In other words, EWG wants the standard to be changed so that GCC's behavior
actually becomes conforming, as far as I understand the intent.