michael@0: function unboxint() {
michael@0:     var q = 0;
michael@0:     var o = [4];
michael@0:     for (var i = 0; i < 100; ++i)
michael@0:         q = o[0] << 1;
michael@0:     return q;
michael@0: }
michael@0: assertEq(unboxint(), 8);