michael@0: var foo;
michael@0: 
michael@0: function gen() {
michael@0:     var x = 0;
michael@0:     foo = function() { return x++; }
michael@0:     for (var i = 0; i < 10; ++i)
michael@0:         yield x++;
michael@0: }
michael@0: 
michael@0: var j = 0;
michael@0: for (i in gen())
michael@0:     assertEq(i, j++);
michael@0: 
michael@0: // now mess up the stack
michael@0: 
michael@0: function f1(x) {
michael@0:     var a, b, c, d, e, f, g;
michael@0:     return x <= 0 ? 0 : f1(x-1);
michael@0: }
michael@0: f1(10);
michael@0: function f2(x) {
michael@0:     var a = x, b = x;
michael@0:     return x <= 0 ? 0 : f2(x-1);
michael@0: }
michael@0: f2(10);
michael@0: 
michael@0: // now observe gen's call object (which should have been put)
michael@0: 
michael@0: gc();
michael@0: assertEq(foo(), 10);
michael@0: gc();
michael@0: assertEq(foo(), 11);
michael@0: gc();
michael@0: assertEq(foo(), 12);
michael@0: 
michael@0: reportCompare(true,true);