[Bug c++/70194] [6 regression] missing -Waddress on constexpr pointer

[mpolacek at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70194

--- Comment #3 from Marek Polacek <mpolacek at gcc dot gnu.org> ---
Seems like we just need to add maybe_constant_value calls.