'use strict';
require('../common');
const assert = require('assert');
let err;
// Create some random error frames.
(function a() {
(function b() {
(function c() {
err = new Error('test error');
})();
})();
})();
(function x() {
(function y() {
(function z() {
assert.ifError(err);
})();
})();
})();