[proxies] Check for stack overflow when calling through to the target

test/mjsunit/harmony/proxies-prototype-target-stackoverflow.js

Index: test/mjsunit/harmony/proxies-prototype-target-stackoverflow.js
diff --git a/test/mjsunit/harmony/proxies-prototype-target-stackoverflow.js b/test/mjsunit/harmony/proxies-prototype-target-stackoverflow.js
new file mode 100644
index 0000000000000000000000000000000000000000..ba55f6aad9357cfff3b600addb70a02148a415b9
--- /dev/null
+++ b/test/mjsunit/harmony/proxies-prototype-target-stackoverflow.js
@@ -0,0 +1,97 @@
+// Copyright 2015 the V8 project authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Flags: --harmony-proxies --harmony-reflect
+
+// Test that traps that involve walking the target object's prototype chain
+// don't overflow the stack when the original proxy is on that chain.
+
+(function TestGetPrototype() {
+  var p = new Proxy({}, {});
+  p.__proto__ = p;
+  try { return p.__proto__; } catch(e) { assertInstanceof(e, RangeError); }
+})();
+
+(function TestSetPrototype() {
+  var p = new Proxy({}, {});
+  p.__proto__ = p;
+  try { p.__proto__ = p; } catch(e) { assertInstanceof(e, RangeError); }
+})();
+
+(function TestHasProperty() {
+  var p = new Proxy({}, {});
+  p.__proto__ = p;
+  try {
+    return Reflect.has(p, "foo");
+  } catch(e) { assertInstanceof(e, RangeError); }
+})();
+
+(function TestSet() {
+  var p = new Proxy({}, {});
+  p.__proto__ = p;
+  try { p.foo = 1; } catch(e) { assertInstanceof(e, RangeError); }
+})();
+
+(function TestGet() {
+  var p = new Proxy({}, {});
+  p.__proto__ = p;
+  try { return p.foo; } catch(e) { assertInstanceof(e, RangeError); }
+})();
+
+(function TestEnumerate() {
+  var p = new Proxy({}, {});
+  p.__proto__ = p;
+  try { for (var x in p) {} } catch(e) { assertInstanceof(e, RangeError); }
+})();
+
+// The following traps don't involve the target object's prototype chain;
+// we test them anyway for completeness.
+
+(function TestIsExtensible() {
+  var p = new Proxy({}, {});
+  p.__proto__ = p;
+  return Reflect.isExtensible(p);
+})();
+
+(function TestPreventExtensions() {
+  var p = new Proxy({}, {});
+  p.__proto__ = p;
+  Reflect.preventExtensions(p);
+})();
+
+(function TestGetOwnPropertyDescriptor() {
+  var p = new Proxy({}, {});
+  p.__proto__ = p;
+  return Object.getOwnPropertyDescriptor(p, "foo");
+})();
+
+(function TestDeleteProperty() {
+  var p = new Proxy({}, {});
+  p.__proto__ = p;
+  delete p.foo;
+})();
+
+(function TestDefineProperty() {
+  var p = new Proxy({}, {});
+  p.__proto__ = p;
+  Object.defineProperty(p, "foo", {value: "bar"});
+})();
+
+(function TestOwnKeys() {
+  var p = new Proxy({}, {});
+  p.__proto__ = p;
+  return Reflect.ownKeys(p);
+})();
+
+(function TestCall() {
+  var p = new Proxy(function() {}, {});
+  p.__proto__ = p;
+  return p();
+})();
+
+(function TestConstruct() {
+  var p = new Proxy(function() { this.foo = 1; }, {});
+  p.__proto__ = p;
+  return new p();
+})();