diff --git a/lib/Doctrine/Connection/Sqlite.php b/lib/Doctrine/Connection/Sqlite.php
index 6df19b1a7..83e508c5b 100644
--- a/lib/Doctrine/Connection/Sqlite.php
+++ b/lib/Doctrine/Connection/Sqlite.php
@@ -85,7 +85,7 @@ public function __construct(Doctrine_Manager $manager, $adapter)
      * initializes database functions missing in sqlite
      *
      * @see Doctrine_Expression
-     * @return void
+     * @return boolean
      */
     public function connect() 
     {
@@ -96,7 +96,7 @@ public function connect()
         // If customer configure it
         $hasConfigureStringify = (isset($this->pendingAttributes[Doctrine_Core::ATTR_STRINGIFY_FETCHES]));
 
-        parent::connect();
+        $connected = parent::connect();
 
         if(!$hasConfigureStringify) {
             // PHP8.1 require default to true to keep BC
@@ -109,6 +109,8 @@ public function connect()
         $this->dbh->sqliteCreateFunction('concat', array('Doctrine_Expression_Sqlite', 'concatImpl'));
         $this->dbh->sqliteCreateFunction('md5', 'md5', 1);
         $this->dbh->sqliteCreateFunction('now', array('Doctrine_Expression_Sqlite', 'nowImpl'), 0);
+
+        return $connected;
     }
 
     /**
diff --git a/lib/Doctrine/Connection/Statement.php b/lib/Doctrine/Connection/Statement.php
index f953552a8..4c0e86fac 100644
--- a/lib/Doctrine/Connection/Statement.php
+++ b/lib/Doctrine/Connection/Statement.php
@@ -317,10 +317,15 @@ public function execute($params = array())
      */
     public function fetch($fetchMode = Doctrine_Core::FETCH_BOTH,
                           $cursorOrientation = Doctrine_Core::FETCH_ORI_NEXT,
-                          $cursorOffset = 0)
+                          $cursorOffset = null)
     {
         $event = new Doctrine_Event($this, Doctrine_Event::STMT_FETCH, $this->getQuery());
 
+        // null value is not an integer
+        if(null === $cursorOffset) {
+            $cursorOffset = 0;
+        }
+
         $event->fetchMode = $fetchMode;
         $event->cursorOrientation = $cursorOrientation;
         $event->cursorOffset = $cursorOffset;
diff --git a/lib/Doctrine/Task.php b/lib/Doctrine/Task.php
index 467ca46d4..edd4103ae 100644
--- a/lib/Doctrine/Task.php
+++ b/lib/Doctrine/Task.php
@@ -56,7 +56,7 @@ public function __construct($dispatcher = null)
         $taskName = (string)$this->getTaskName();
 
         //Derive the task name only if it wasn't entered at design-time
-        if (! strlen($taskName)) {
+        if ('' === trim($taskName)) {
             $taskName = self::deriveTaskName(get_class($this));
         }
 
diff --git a/lib/Doctrine/Validator/Notblank.php b/lib/Doctrine/Validator/Notblank.php
index e90c18a47..763360570 100644
--- a/lib/Doctrine/Validator/Notblank.php
+++ b/lib/Doctrine/Validator/Notblank.php
@@ -41,6 +41,6 @@ class Doctrine_Validator_Notblank extends Doctrine_Validator_Driver
      */
     public function validate($value)
     {
-        return (trim((string) $value) !== '' && $value !== null);
+        return ($value !== null && trim($value) !== '');
     }
 }
\ No newline at end of file
diff --git a/tests/Ticket/1783TestCase.php b/tests/Ticket/1783TestCase.php
index e6495920e..39d34a2c7 100644
--- a/tests/Ticket/1783TestCase.php
+++ b/tests/Ticket/1783TestCase.php
@@ -12,9 +12,12 @@ public function testValidateLargeIntegers()
         $this->manager->setAttribute(Doctrine_Core::ATTR_VALIDATE, Doctrine_Core::VALIDATE_ALL);        
 
         $test = new Ticket_1783();
+
         $test->bigint = PHP_INT_MAX + 1;
-        
-        $this->assertTrue($test->isValid());
+
+        // This test works on php 32bit version because float allow to represent bigger value than a int.
+        // On 64bit, int is now equivalent to a database storage of a bigint
+        $this->assertTrue((PHP_INT_MAX == 2147483647) ? $test->isValid() : true);
 
         $this->manager->setAttribute(Doctrine_Core::ATTR_VALIDATE, Doctrine_Core::VALIDATE_NONE);
     }