ModelHistory *history = model->get_history();
func_id = history->getFuncMap()->get(funcName);
+ /* func_id not found; this could happen in the case where a function calls cds_func_entry
+ * when the model has been defined yet, but then an atomic inside the function initializes
+ * the model. And then cds_func_exit is called upon the function exiting.
+ */
+ if (func_id == 0)
+ return;
+
history->exit_function(func_id, th->get_id());
}