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). _______________________________________________ Douglas Miller BlueGene Messaging Development IBM Corp., Rochester, MN USA Bldg 030-2 A401 [email protected] Douglas Miller/Rochester/IBM Jed Brown <[email protected] .gov> To Sent by: Main MPI Forum mailing list mpi-forum-bounces <[email protected]>, @lists.mpi-forum. cc org Subject Re: [Mpi-forum] C++ types 06/26/2012 11:14 inaccessible after #281 AM Please respond to Main MPI Forum mailing list <mpi-forum@lists. mpi-forum.org> On Tue, Jun 26, 2012 at 6:13 AM, Jeff Squyres <[email protected]> wrote: There are a few C++-specific datatypes for which it would be worth introducing new C datatypes (e.g., MPI_CXX_COMPLEX).  It's too bad that no one realized this until now, because this won't make the MPI-3 deadline.  But it could be part of MPI-3.1 or errata, or some such. Two people in offline discussions have suggested that C bindings to the std::complex types (I'm not aware of anything else that #281 will lose) might qualify as ticket 0._______________________________________________ mpi-forum mailing list [email protected] http://lists.mpi-forum.org/mailman/listinfo.cgi/mpi-forum