Back out 97036ab72558 which inappropriately compared turds to third parties.
3 assertEq(str.charCodeAt(Infinity) | 0, 0);
4 for (var i = 0; i < 10; ++i)
5 x = str.charCodeAt(Infinity) | 0;
7 for (var i = 0; i < 10; ++i)
8 x = str.charCodeAt(Infinity);