- *ierr = MPI_Win_create_keyval(reinterpret_cast<MPI_Win_copy_attr_function*>(copy_fn), reinterpret_cast<MPI_Win_delete_attr_function*>(delete_fn),
- keyval, extra_state) ;
+ smpi_copy_fn _copy_fn={nullptr,nullptr,nullptr,nullptr,nullptr,(*(int*)copy_fn) == 0 ? nullptr : reinterpret_cast<MPI_Win_copy_attr_function_fort*>(copy_fn)};
+ smpi_delete_fn _delete_fn={nullptr,nullptr,nullptr,nullptr,nullptr,(*(int*)delete_fn) == 0 ? nullptr : reinterpret_cast<MPI_Win_delete_attr_function_fort*>(delete_fn)};
+ *ierr = simgrid::smpi::Keyval::keyval_create<simgrid::smpi::Win>(_copy_fn, _delete_fn, keyval, extra_state);