[Bug c++/80294] [5/6/7 Regression] ICE with constexpr and inheritance

[trippels at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=80294

--- Comment #15 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
I only looked at a small random sample. So yes, you are right and I retract my
patch, because the majority doesn't expect a NULL elt.