michael@0: verifyprebarriers()
michael@0: x = []
michael@0: function z() {}
michael@0: Object.defineProperty(x, 2, {
michael@0:     value: z
michael@0: })
michael@0: gczeal(2, 2)
michael@0: y = x.slice(2)
michael@0: y.e = (function() {})