// use aggdb
db = db.getSiblingDB("aggdb");
var article = db.article;

load('jstests/aggregation/data/articles.js');

// original crash from ticket
var r3 = article.aggregate({$project: {author: 1, _id: 0}}, {$project: {Writer: "$author"}});

var r3result = [{"Writer": "bob"}, {"Writer": "dave"}, {"Writer": "jane"}];

assert.eq(r3.toArray(), r3result, 's5012 failed');