[MPI3 Fortran] [Mpi-comments] MPI 3.0: Fortran 2008 interface - issue with the LOGICAL kind

[Rolf Rabenseifner]

> > Except that LEN=* is not permitted with Bind(C), either. For
> > Bind(C), using CHARACTER(len=1),dimension(*) would be fine, though.

Tobias, 
If I understand TS29113 correctly, then your sentence 
 - is valid for Fortran 2003 and 2008
 - is not correct for TS29113:
   TS29113 allows CHARACTER(LEN=*).

As you wrote on March 18:
> TS 29113 allows in addtion len=* and len=: for dummy arguments of 
> BIND(C) procedures. However, that doesn't help for 
> LEN=MPI_MAX_OBJECT_NAME, either. (For len=*/len=:, TS 29113 requires 
> that an array descriptor is used; cf. "8.7 Interoperability of 
> procedures and procedure interfaces", p.31, (6)(b) and the paragraph 
> below (6)(d).).

BIND(C) was never expected to be usable with MPI-3.0 before TS 29113 
is available (in any of the three Fortran support methods).

Best regards
Rolf

----- Original Message -----
> From: "Rolf Rabenseifner" <rabenseifner at hlrs.de>
> To: "Tobias Burnus" <burnus at net-b.de>
> Cc: "MPI-3 Fortran working group" <mpi3-fortran at lists.mpi-forum.org>, "Hubert Ritzdorf"
> <Hubert.Ritzdorf at emea.nec.com>, "Martin Schulz" <schulzm at llnl.gov>
> Sent: Thursday, March 28, 2013 8:19:38 PM
> Subject: Re: [MPI3 Fortran] [Mpi-comments] MPI 3.0: Fortran 2008 interface - issue with the LOGICAL kind
> Good.
> 
> Then the very short summary should be okay:
> 
> Due to the 22 routines with LEN=*,
> BIND(C) on the MPI API level should be fully removed.
> BIND(C) makes sense only on this internal interface,
> which should be optional.
> 
> Best regards and happy easter
> Rolf
> 
> 
> ----- Original Message -----
> > From: "Tobias Burnus" <burnus at net-b.de>
> > To: "Rolf Rabenseifner" <rabenseifner at hlrs.de>
> > Cc: "MPI-3 Fortran working group"
> > <mpi3-fortran at lists.mpi-forum.org>, longb at cray.com, "Craig
> > Rasmussen"
> > <rasmus at cas.uoregon.edu>, "Hubert Ritzdorf"
> > <Hubert.Ritzdorf at emea.nec.com>, "Martin Schulz" <schulzm at llnl.gov>,
> > "Jeff
> > Squyres (jsquyres)" <jsquyres at cisco.com>
> > Sent: Thursday, March 28, 2013 8:15:45 PM
> > Subject: Re: [MPI3 Fortran] [Mpi-comments] MPI 3.0: Fortran 2008
> > interface - issue with the LOGICAL kind
> > Rolf Rabenseifner wrote:
> > > Can I summarize your analysis to:
> > > - 2 routines with CHARACTER(LEN=*),INTENT(OUT) arguments
> > >    These routines works with non-BIND(C) and BIND(C),
> > >    because the application must provide a string-buffer
> > >    that is large enough.
> >
> > Except that LEN=* is not permitted with Bind(C), either. For
> > Bind(C),
> > using CHARACTER(len=1),dimension(*) would be fine, though.
> >
> > Tobias
> 
> --
> Dr. Rolf Rabenseifner . . . . . . . . . .. email rabenseifner at hlrs.de
> High Performance Computing Center (HLRS) . phone ++49(0)711/685-65530
> University of Stuttgart . . . . . . . . .. fax ++49(0)711 / 685-65832
> Head of Dpmt Parallel Computing . . . www.hlrs.de/people/rabenseifner
> Nobelstr. 19, D-70550 Stuttgart, Germany . . . . (Office: Room 1.307)
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-- 
Dr. Rolf Rabenseifner . . . . . . . . . .. email rabenseifner at hlrs.de
High Performance Computing Center (HLRS) . phone ++49(0)711/685-65530
University of Stuttgart . . . . . . . . .. fax ++49(0)711 / 685-65832
Head of Dpmt Parallel Computing . . . www.hlrs.de/people/rabenseifner
Nobelstr. 19, D-70550 Stuttgart, Germany . . . . (Office: Room 1.307)