michael@0: o = {}
michael@0: for (let i = 0; i < 70; i++) {
michael@0:     try {
michael@0:         p
michael@0:     } catch (e) {}
michael@0:     (function() {
michael@0:         for (x in Iterator.prototype) {}
michael@0:     })()
michael@0:     o.__proto__ = null
michael@0:     delete o.__proto__
michael@0: }