[Bug fortran/85599] Prevent short-circuiting of logical expressions for non-pure functions

[dominiq at lps dot ens.fr]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85599

--- Comment #35 from Dominique d'Humieres <dominiq at lps dot ens.fr> ---
> gfc_warning(OPT_Wsurprising, "Impure function %qs at %L may not be
> evaluated", ...)

I am perfectly happy with the short-circuit evaluation and I don't want any
warning when I use -Wall.