[es6] throw TypeError when setting cyclic prototype value

test/mjsunit/proto-accessor.js

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 11 matching lines @@
 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
 // Fake Symbol if undefined, allowing test to run in non-Harmony mode as well.
 this.Symbol = typeof Symbol != 'undefined' ? Symbol : String;
 
 
+function TestSetProtoValueCyclic() {
+  var objects = [
+    Object.prototype, {},
+    Array.prototype, [],
+    Error.prototype, new TypeError,
+    // etc ...
+  ];
+  for (var i = 0; i < objects.length; i += 2) {
+    var object = objects[i];
+    var value = objects[i+1];
+    assertThrows(function() {
+      object.__proto__ = value;
+    }, TypeError);
+  }
+};
+TestSetProtoValueCyclic();
+
+
 var desc = Object.getOwnPropertyDescriptor(Object.prototype, "__proto__");
 var getProto = desc.get;
 var setProto = desc.set;
 
 function TestNoPoisonPill() {
   assertEquals("function", typeof desc.get);
   assertEquals("function", typeof desc.set);
   assertDoesNotThrow("desc.get.call({})");
   assertDoesNotThrow("desc.set.call({}, {})");
 
@@ skipping 94 matching lines @@
   var p = {};
   o.__proto__ = p;
   assertEquals(Object.getPrototypeOf(o), Object.prototype);
   var desc4 = Object.getOwnPropertyDescriptor(o, "__proto__");
   assertTrue(desc4.configurable);
   assertTrue(desc4.enumerable);
   assertTrue(desc4.writable);
   assertEquals(desc4.value, p);
 }
 TestDeleteProto();