for (var i = 0; i < 6; ++i)
var x = PropertyCatchalls.x;
shouldBe("x", null);
+var make_throw = 'make_throw';
+shouldThrow("PropertyCatchalls[make_throw]=1");
+make_throw = 0;
+shouldThrow("PropertyCatchalls[make_throw]=1");
for (var i = 0; i < 10; ++i) {
for (var p in PropertyCatchalls) {