lib/Doctrine/Table.php

@@ -710,10 +710,6 @@ class Doctrine_Table extends Doctrine_Configurable implements Countable
             $length = 2147483647;
         }
 
-        if ((string) (int) $length !== (string) $length) {
-            throw new Doctrine_Table_Exception('Invalid argument given for column length');
-        }
-
         $this->columns[$name] = $options;
         $this->columns[$name]['type'] = $type;
         $this->columns[$name]['length'] = $length;