michael@0: // |jit-test| error: TypeError
michael@0: function f(o) {
michael@0:     for (j = 0; j < 9; j++) {
michael@0:         if (j) {
michael@0:             o.__proto__ = null
michael@0:         }
michael@0:         for (v in o) {}
michael@0:     }
michael@0: }
michael@0: for (i = 0; i < 9; i++) {
michael@0:     (new Boolean).__proto__.__defineGetter__("toString", function() {})
michael@0:     f(Boolean.prototype)
michael@0: }