[Bug fortran/84387] Defined output does not work for a derived type that has no components

[jvdelisle at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=84387

--- Comment #8 from Jerry DeLisle <jvdelisle at gcc dot gnu.org> ---
We have confirmed this is addressed in the standard, though, as usual, one has
to read two or three conditions and deduce it.

2018: Section 12.6.4.8.4. I am looking at how to fix.