[Bug c++/45923] constexpr diagnostic w/ non-literal

[jason at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45923

--- Comment #1 from Jason Merrill <jason at gcc dot gnu.org> 2010-10-07 15:35:45 UTC ---
(In reply to comment #0)
> constexpr-basic.cc:20:33: error: ‘double complex::real() const’ is not a
> constexpr function
> 
> NO!

Yes.  It is not valid for real() to be constexpr in a non-literal class, so it
is not constexpr.