potential bug in crm_update_contact

The problem is definitely with crm_update_contact. Just tested it
with CiviCRM 1.3 rev 4495 under php 4. It's not saving the first or
last name. This is the offending code snippet:

$params = array('email' => $user->mail);
if ($contact = crm_get_contact($params))

{ $info = array('first_name' => $edit->first ? $edit->first : NULL, 'last_name' => $edit->last ? $edit->last : NULL, 'street_address' => $edit->address ? $edit- >address : NULL, 'city' => $edit->city ? $edit->city : NULL, 'state_province' => $edit->state ? $edit- >state : NULL, 'postal_code' => $edit->zip ? $edit->zip : NULL, 'phone' => $edit->phone ? $edit->phone : NULL); $contact = crm_update_contact($contact, $info); }