On Jun 26, 2012, at 11:21 AM MDT, Jeff Hammond wrote:

as far as i'm concerned, these types are only valid with the C bindings when a C++ compiler is used. does that solve it?

This is basically the way that we handle the situation in the standard where a particular type isn't supported by a C or Fortran compiler (MPI_INTEGER16, MPI_UINT64_T). -Dave

jeff

On Tue, Jun 26, 2012 at 11:41 AM, Douglas Miller <[email protected]> wrote:

...

I've got to raise a concern here. If we start defining MPI datatypes to be C++ types then how will an implementation support that with only a C compiler? I thought the point of 281 was to eradicate C++ from the standard (and start over later if C++ was to be defined in the standard).