michael@0: actual = '';
michael@0: expected = '2,5,';
michael@0: 
michael@0: function loop(f) {
michael@0:   var p;
michael@0:   for (var i = 0; i < 1000; ++i) {
michael@0:     p = f();
michael@0:   }
michael@0:   return p;
michael@0: }
michael@0: 
michael@0: function f(k) {
michael@0:   function g() {
michael@0:     return k;
michael@0:   }
michael@0: 
michael@0:   k = 2;
michael@0:   appendToActual(loop(g));
michael@0:   k = 5;
michael@0:   appendToActual(loop(g));
michael@0: }
michael@0: 
michael@0: f();
michael@0: 
michael@0: 
michael@0: assertEq(actual, expected)