symfony/symfony — pull request #4251 by TonyMalz (2012-05-10 15:23:07+00:00)
Title: [Form] fixed invalid 'type' option in ValidatorTypeGuesser for Date/TimeFields

Automatic field type guessing breaks, if you use any of the Date/Time
constraints (i.e. Symfony\Component\Validator\Constraints\DateTime), since these field types have no 'type' option defined.
(See getDefaultOptions() in DateTimeType.php)