Merge branch '4.3' into 4.4

* 4.3:
  fix merge
  CS
  [Serializer] Skip uninitialized (PHP 7.4) properties in PropertyNormalizer and ObjectNormalizer
  stop using deprecated Doctrine persistence classes
  [Cache] Fix wrong classname in deprecation message
  Fix regex lookahead syntax in ApplicationTest
  Fixed syntax in comment
  [SecurityBundle][FirewallMap] Remove unused property
  [Messenger][AMQP] Use delivery_mode=2 by default
  [DI] Improve performance of processDefinition
  Fix invalid Windows path normalization
  [Validator][ConstraintValidator] Safe fail on invalid timezones
  [DoctrineBridge] Fixed submitting invalid ids when using queries with limit
  [FrameworkBundle] Add info & example to auto_mapping config
  fix comparisons with null values at property paths

Author: nicolas-grekas

DependencyInjection/Configuration.php

@@ -861,6 +861,11 @@ private function addValidationSection(ArrayNodeDefinition $rootNode)
                             ->end()
                         ->end()
                         ->arrayNode('auto_mapping')
+                            ->info('A collection of namespaces for which auto-mapping will be enabled.')
+                            ->example([
+                                'App\\Entity\\' => [],
+                                'App\\WithSpecificLoaders\\' => ['validator.property_info_loader'],
+                            ])
                             ->useAttributeAsKey('namespace')
                             ->normalizeKeys(false)
                             ->beforeNormalization()

Templating/TemplateNameParser.php

@@ -48,7 +48,7 @@ public function parse($name)
         }
 
         // normalize name
-        $name = str_replace(':/', ':', preg_replace('#/{2,}#', '/', str_replace('\\', '/', $name)));
+        $name = preg_replace('#/{2,}#', '/', str_replace('\\', '/', $name));
 
         if (false !== strpos($name, '..')) {
             throw new \RuntimeException(sprintf('Template name "%s" contains invalid characters.', $name));