michael@0: 
michael@0: function foo(x) {
michael@0:   var y = 2.5;
michael@0:   y = -x;
michael@0:   var z = [1,2,y];
michael@0:   return x + 5;
michael@0: }
michael@0: for (var i = 0; i < 20; i++)
michael@0:   foo(i);
michael@0: assertEq(foo(20), 25);