[Bug fortran/119136] Printing result of function that prints itself hangs

[jvdelisle at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=119136

--- Comment #13 from Jerry DeLisle <jvdelisle at gcc dot gnu.org> ---
(In reply to Thomas Koenig from comment #12)
> For asynchronous I/O, if there still is anything pending, then also
> an error should be issued.

I had similar thoughts on putting a flag of sorts in the unit structure.
Handling async I/O was my next thinking step. I think you are right.