This change has actually broken the test:  ```  1) Doctrine\\Tests\\ORM\\Functional\\Ticket\\DDC3192Test::testIssue  Failed asserting that false matches expected 'BYR'.    /www/doctrine/doctrine2/tests/Doctrine/Tests/ORM/Functional/Ticket/DDC3192Test.php:55  ```    There is likely string to integer coercion that doesn't work after enabling strict mode.