5cbf975955
MPI-1 does not say whether an errorhandler obtained via MPI_ERRHANDLER_GET (or MPI_COMM_GET_ERRHANDLER or ...) needs to be ERRHANDLER_FREE'd or not. I don't think it does, but some users will probably disagree. So per the lengthy comment in src/mpi/c/comm_get_errhandler.c, we increment the refcount whenever GET is invoked. This can lead to a memory leak in FINALIZE if the user GET's some intrinsic error handlers -- we'll increment the refcount, which means that it will never get to 0 during FINALIZE like it should. So add a little extra logic to ensure that they are OMPI_OBJ_DESTROY'ed during FINALIZE like they should be. This commit was SVN r3661.
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...more to write here
should be a short file, referring to the real docs.