[Bug fortran/69064] Unhelpful error message when a module variable was not included in the only list

[dominiq at lps dot ens.fr]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69064

--- Comment #34 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
No read_input_mod.mod. Please work on a reduced test showing the issue. If you
cannot do it at least provide a compressed tar of you project. So far we are
both wasting our time!-(