[Bug fortran/50536] an input item shall not appear as the do-variable of any io-implied-do

[burnus at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=50536

--- Comment #7 from Tobias Burnus <burnus at gcc dot gnu.org> ---
> it is insufficient as it does not take care of, e.g.
>    (foo%a(foo%i), foo%i = 1,5)
> which is odd but valid.

Or the following (for i /= j): (foo(i)%i, foo(j)%i = 1, 5).