michael@0: var a, b;
michael@0: 
michael@0: function f(str) {
michael@0:     var n;
michael@0:     var k;
michael@0:     for (var i = 0; i < 18; ++i) {
michael@0: 	n = str;
michael@0: 	k = n++;
michael@0: 	if (k) { }
michael@0:     }
michael@0:     return [k, n];
michael@0: }
michael@0: 
michael@0: [a, b] = f("10");
michael@0: assertEq(a, 10);
michael@0: assertEq(b, 11);
michael@0: 
michael@0: [a, b] = f("5");
michael@0: assertEq(a, 5);
michael@0: assertEq(b, 6);