[Bug c++/67371] Never executed "throw" in constexpr function fails to compile

[trippels at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67371

--- Comment #12 from Markus Trippelsdorf <trippels at gcc dot gnu.org> ---
(In reply to Markus Trippelsdorf from comment #11)
> (In reply to rhalbersma from comment #10)
> > Ping to get this merged into the upcoming 5.4 release.
> 
> Only regressions should be backported. This isn't one.

s/regressions/regression fixes/