On Mar 11 2013, Schulz, Martin wrote:

I am trying to catch up with the various threads on this (sorry, last week was hectic and I didn't get to all emails). I have to admit that I am still confused why there is a problem, but we can clarify this during a phone call or during the march meeting. However, doesn't not doing BINDC create a problem, since I now have to again deal with the no/one/two underscore issue? This sounds like a bad interface design to me, especially when we starting mixing things.

You are speaking as an implementor, right? The user does not have to worry about that, with or without BIND(C). There are actually much nastier implementation problems with mixing Fortran and C, in general, so I don't see that it's a big deal. The exception is if you use a user-defined reduction operator into a mixture of Fortran and C, when getting it to work at all is such an evil issue that you need all the help you can get! Actually, that's just a variation of the heterogeneous node problem, which is somewhat swept under the carpet by MPI and affects very, very few users. Regards, Nick Maclaren.