[Bug fortran/66605] -Wunused-parameter causes internal compiler error with gfortran 5.1.0

[manu at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66605

--- Comment #10 from Manuel López-Ibáñez <manu at gcc dot gnu.org> ---
(In reply to Manuel López-Ibáñez from comment #9)
> I still think this is a latent bug in the way that Fortran is generating the
> PARAM_DECL for time, but if the Fortran maintainers are not interested in
> investigating that, then I could prepare a patch with any of the
> work-arounds I have proposed above as soon as a Fortran maintainer (someone
> that will approve the patch) chooses one.

Scratch that. Since the goal is to bluntly silence the warning, then the only
work-around I see is the one proposed in the previous comment. 

(It would be interesting to know at which GCC version or revision the warning
started appearing).