1 This test checks that setting a cyclic value for __proto__ throws an exception and does not alter __proto__. This was reported as bug 17927.
3 On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
6 PASS x.__proto__ = x; threw exception TypeError: Cyclic __proto__ value.
7 PASS x.__proto__ is originalProto
8 PASS successfullyParsed is true