[Bug fortran/107441] optional arguments are identified as "present" when missing

[anlauf at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107441

--- Comment #4 from anlauf at gcc dot gnu.org ---
(In reply to anlauf from comment #3)
> We now need the corresponding part on the procedure side.

That might be create_function_arglist (trans-decl.cc).
There's currently a single hidden_arglist, which needs
to be aligned to the caller's side.

Is there a public documentation what the ordering should be?