[MPI3 Fortran] New information up on the wiki

[Craig Rasmussen]

As we are meeting next week I thought I put some information out for  
comment over the next couple of days.  There is a open ticket on  
MPI-2-2 regarding the use of C varargs from Fortran.  From the ticket:

The following Fortran errorhandler callback subroutines are prototyped  
with varags in the MPI 2.1 spec:

     * COMM_ERRHANDLER_FN
     * WIN_ERRHANDLER_FN
     * FILE_ERRHANDLER_FN

Fortran does not have variable length argument lists. This is quite  
obviously a typo that dates back to MPI 2.0 but was missed in 2.1.

The suggestion is to remove the ",..." syntax from the Fortran 2.2  
bindings as it is not part of Fortran.  This seems entirely reasonable  
to me.

There is a move afoot to get interoperability with varags in the  
Fortran C interoperability standard.  This is still up in the air at  
the moment and we don't know which way it will go.

Comments?

Craig