Function mpi::ffi::OMPI_C_MPI_COMM_NULL_COPY_FN

pub unsafe extern fn OMPI_C_MPI_COMM_NULL_COPY_FN(comm: MPI_Comm,
                                                  comm_keyval: c_int,
                                                  extra_state: *mut c_void,
                                                  attribute_val_in: *mut c_void,
                                                  attribute_val_out: *mut c_void,
                                                  flag: *mut c_int)
                                                  -> c_int