michael@0: function loop(f) {
michael@0:   var p;
michael@0:   for (var i = 0; i < 10; ++i) {
michael@0:     p = f();
michael@0:   }
michael@0:   return p;
michael@0: }
michael@0: 
michael@0: function f(j, k) {
michael@0:   var g = function() { return k; }
michael@0: 
michael@0:   var ans = '';
michael@0: 
michael@0:   for (k = 0; k < 5; ++k) {
michael@0:     ans += loop(g);
michael@0:   }
michael@0:   return ans;
michael@0: }
michael@0: 
michael@0: var t0 = new Date;
michael@0: var actual = f(1);
michael@0: 
michael@0: assertEq(actual, '01234');