[Patch,Fortran,committed] Update download address of coco

[Tobias Burnus]

  Toon Moene wrote:
> Tobias Burnus wrote:
>> Let's see what Fortran 2013 will provide - maybe some template/macro 
>> programming, which partially replaces CPP?
>
> During the development of the 2008 Standard we shortly discussed a 
> Fortran approach to generic programming.

Yes, the "intelligent macros" were for a while in the standard, see for 
instance page 8 at http://www.fortran.bcs.org/2007/jubilee/bcs07.pdf.

I believe it would be useful to get template support and lambda 
functions into the language - maybe in some way which also allows to use 
it for conditional compilation, but I think it is not a simple task to 
create a flexible/powerful but still simple feature. Type parameters 
seem to move into that direction, but I am not sure they are as useful 
as initially hoped for.

I think the F2013 discussion will start in about 1/2 year ... currently, 
the focus seems to be on interpretation requests and on the two upcoming 
TRs - the one on further interoperability with C (which should be ready 
end of this year) and a TR about more coarray features.


> However, after some debate we became convinced that we didn't have 
> enough time (2008 was supposed to be a simple "bug fix style update" 
> to 2003) to do it right.

If I recall correctly as bystander, there were still some loose ends - 
thus postponing the macros seems to be reasonable.

By the way, contrary to some, I think the Fortran 2008 was indeed a 
minor update. That's underlined by the number of F2008 features, which 
have already been implemented in gfortran: 
http://gcc.gnu.org/wiki/Fortran2008Status ; except for coarrays (which 
are partially implemented), there is no large item - though submodules 
and internal procedures are actual argument could be of medium complexity.

By contrast, Fortran 2003 was a much more demanding standard. While 
gfortran has implemented quite a bit, there are still larger features 
missing such as IEEE, polymorphism items (such as CLASS(*), some issues 
with arrays, FINALization subroutines), UDIO, DT parameters, 
(re)allocate on assignment, allocatable char lengths. Cf. 
http://gcc.gnu.org/wiki/Fortran2003Status

Let's see how long it takes until gfortran has implemented all new 
Fortran 2008 features and until when Fortran 2003 is fully supported; 
the former might actually happen first.


Actually, that reminds me that we need to think about how to implement 
the DT kind/length parameters; one may need to add additional elements 
to the new array descriptor - thus, we need soon to think about this.

Tobias