angularjs pass newly created array in attribute to directive

I've created this fiddle to show my issue...

http://jsfiddle.net/dQDtw/

I'm passing a newly created array to a directive, and everything is working out just fine. However, I'm getting an error in the console window indicating:

Error: [$rootScope:infdig] 10 $digest() iterations reached. Aborting!

Any thoughts on what I need to massage to clean this up? I'd like to be able to reuse the directive without the need to update the controller.

Here is the html

<body ng-app="myApp">
    <test-dir fam-people='[1,4,6]'> </test-dir>
    <test-dir fam-people='[2,1,0]'> </test-dir>
</body>

Here is the JS.

var myApp = angular.module('myApp', []);

myApp.directive('testDir', function() {
            return { restrict: 'E'
                   , scope: { famPeople: '=famPeople' }
                   , template: "<ol> <li ng-repeat='p in famPeople'> {{p}}"
                   };
    });