michael@0: function build_getter(i) {
michael@0:     var x = [i];
michael@0:     return function f() { return x; }
michael@0: }
michael@0: 
michael@0: function test()
michael@0: {
michael@0:     var N = internalConst("INCREMENTAL_MARK_STACK_BASE_CAPACITY") + 2;
michael@0:     var o = {};
michael@0:     var descriptor = { enumerable: true};
michael@0:     for (var i = 0; i != N; ++i) {
michael@0: 	descriptor.get = build_getter(i);
michael@0: 	Object.defineProperty(o, i, descriptor);
michael@0:     }
michael@0: 
michael@0:     // At this point we have an object o with N getters. Each getter in turn
michael@0:     // is a closure storing an array. During the GC we push to the object
michael@0:     // marking stack all the getters found in an object after we mark it. As N
michael@0:     // exceeds the size of the object marking stack, this requires to run the
michael@0:     // dealyed scanning for some closures to mark the array objects stored in
michael@0:     // them.
michael@0:     //
michael@0:     // We run the GC twice to make sure that the background finalization
michael@0:     // finishes before we access the objects.
michael@0:     gc();
michael@0:     gc();
michael@0:     for (var i = 0; i != N; ++i)
michael@0: 	assertEq(o[i][0], i);
michael@0: }
michael@0: 
michael@0: test();