michael@0: // don't assert
michael@0: var f = function(){};
michael@0: for (var p in f);
michael@0: Object.defineProperty(f, "j", ({configurable: true, value: "a"}));
michael@0: Object.defineProperty(f, "k", ({configurable: true, value: "b"}));
michael@0: Object.defineProperty(f, "j", ({configurable: true, get: function() {}}));
michael@0: delete f.k;
michael@0: Object.defineProperty(f, "j", ({configurable: false}));