michael@0: Date.prototype.format1 = function() {
michael@0:     return "" + this.getMonth() + this.getFullYear();
michael@0: }
michael@0: function f(d) {
michael@0:     for (var i=0; i<60; i++) {
michael@0:         assertEq(d.format1(), "91987");
michael@0:     }
michael@0: }
michael@0: f(new Date("10/10/1987 1:11:11"));
michael@0: 
michael@0: var global = 0;
michael@0: function f1() {
michael@0:     return global++;
michael@0: }
michael@0: function g1() {
michael@0:     return f1() + f1();
michael@0: }
michael@0: var result = 0;
michael@0: for (var i=0; i<100; i++)
michael@0:     result += g1();
michael@0: assertEq(result, 19900);
michael@0: 
michael@0: function g2() {
michael@0:     var a = [];
michael@0:     var b = [];
michael@0:     a.push(1);
michael@0:     return a.length + b.length;
michael@0: }
michael@0: for (var i=0; i<100; i++)
michael@0:     assertEq(g2(), 1);