--- /dev/null
+function Cons1() {
+}
+Cons1.prototype.f = 42;
+
+function Cons2() {
+}
+Cons2.prototype.__defineSetter__("f", function(value) {
+ counter++;
+ this._f = value;
+});
+Cons2.prototype.__defineGetter__("f", function() { return this._f; });
+
+function foo(o, value) {
+ o.f = value;
+ return o.f;
+}
+
+noInline(foo);
+
+var counter = 0;
+
+function test(o, value, expectedCount) {
+ var result = foo(o, value);
+ if (result != value)
+ throw new Error("Bad result: " + result);
+ if (counter != expectedCount)
+ throw new Error("Bad counter value: " + counter);
+}
+
+for (var i = 0; i < 100000; ++i) {
+ test(new Cons1(), i, counter);
+ test(new Cons2(), i, counter + 1);
+}