The Tor Browser / file revision

 Date.prototype.format1 = function() {

     return "" + this.getMonth() + this.getFullYear();

 }

 function f(d) {

     for (var i=0; i<60; i++) {

         assertEq(d.format1(), "91987");

     }

 }

 f(new Date("10/10/1987 1:11:11"));

 var global = 0;

 function f1() {

     return global++;

 }

 function g1() {

     return f1() + f1();

 }

 var result = 0;

 for (var i=0; i<100; i++)

     result += g1();

 assertEq(result, 19900);

 function g2() {

     var a = [];

     var b = [];

     a.push(1);

     return a.length + b.length;

 }

 for (var i=0; i<100; i++)

     assertEq(g2(), 1);