michael@0: try
michael@0: {
michael@0:   Array.prototype.splice.call({ get length() { throw 'error'; } });
michael@0:   throw new Error("should have thrown, didn't");
michael@0: }
michael@0: catch (e)
michael@0: {
michael@0:   assertEq(e, "error", "wrong error thrown: " + e);
michael@0: }