*** 238,11 *** node->set_req(0, n); } } // process all inputs that are non NULL ! for (int i = node->req()-1; i >= 0; --i) { if (node->in(i) != NULL) { spstack.push(node->in(i)); } } } --- 238,11 --- node->set_req(0, n); } } // process all inputs that are non NULL ! for (int i = node->len()-1; i >= 0; --i) { if (node->in(i) != NULL) { spstack.push(node->in(i)); } } }