[Bug c++/63942] [5.0 Regression] constexpr conflicts with previous declaration

[jason at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63942

--- Comment #5 from Jason Merrill <jason at gcc dot gnu.org> ---
I'm not able to reproduce this with a cross compiler at r217823; is it still
happening for you?