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).