[Form] fix support for years outside of the 32b range on x86 arch

Author: nicolas-grekas

Extension/Core/Type/DateType.php

@@ -381,9 +381,7 @@ private function listYears(array $years)
         $result = [];
 
         foreach ($years as $year) {
-            if (false !== $y = gmmktime(0, 0, 0, 6, 15, $year)) {
-                $result[$y] = $year;
-            }
+            $result[\PHP_INT_SIZE === 4 ? \DateTime::createFromFormat('Y e', $year.' UTC')->format('U') : gmmktime(0, 0, 0, 6, 15, $year)] = $year;
         }
 
         return $result;

Tests/Extension/Core/Type/DateTypeTest.php

@@ -927,19 +927,15 @@ public function testDayErrorsBubbleUp($widget)
         $this->assertSame([$error], iterator_to_array($form->getErrors()));
     }
 
-    public function testYearsFor32BitsMachines()
+    public function testYears()
     {
-        if (4 !== \PHP_INT_SIZE) {
-            $this->markTestSkipped('PHP 32 bit is required.');
-        }
-
         $view = $this->factory->create(static::TESTED_TYPE, null, [
-            'years' => range(1900, 2040),
+            'years' => [1900, 2000, 2040],
         ])
             ->createView();
 
         $listChoices = [];
-        foreach (range(1902, 2037) as $y) {
+        foreach ([1900, 2000, 2040] as $y) {
             $listChoices[] = new ChoiceView($y, $y, $y);
         }