------- Comment #5 from sgk at troutmask dot apl dot washington dot edu
2008-02-29 20:41 -------
Subject: Re: scope of variables in statement function do not acquire rank from
host
On Fri, Feb 29, 2008 at 08:23:16PM -0000, fxcoudert at gcc dot gnu dot org
wrote:
> (In reply to comment #3)
> > The dummy arguments have a scope of the statement function. Each
> > dummy argument has the same type and type parameters as the
> > entity of the same name in the scoping unit containing the statement
> > function.
> >
> > Note, this passage does not include rank.
>
> No, but it does not say that they are scalar either. It does not say "Each
> dummy argument is a scalar of the same type and type parameters...".
>
> If we follow this interpretation, then what does "The function-name
> and each dummy-arg-name shall be specified, explicitly or implicitly,
> to be scalar" mean? In your (and Richard Maine's and ...) reading,
> the dummy arguments are by definition scalar, and so how can they be
> "specified, explicitly or implicitly,
> to be scalar". Or, to say it the other way around, let's say that I want to
> break this particular constraint, how do I explicitly specify one of my dummy
> arguments not to be a scalar?
>
> I'm thoroughly confused.
>
Don't worry, I share your confusion (when I read the standard). :)
I think the passage you quote applies to the following code:
program z
real :: y = 2.
real :: x(5) = 1.
f(x(2:4)) = 2 * sum(x) ! dummy arg is an array.
g(y) = y * x ! function g is an array because of x.
end program z
I just found the definition of type parameters in 2.4.1.1.
"The type parameters are KIND and LEN." All other attributes
are irrelevant.
PS: I see you just found the c.l.f threads.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35299
