Merge branch '3.4' into 4.4

* 3.4:
  Enable "native_constant_invocation" CS rule
  Make AbstractPhpFileCacheWarmer public

Author: nicolas-grekas

Controller/ExceptionController.php

@@ -21,7 +21,7 @@
 use Twig\Loader\ExistsLoaderInterface;
 use Twig\Loader\SourceContextLoaderInterface;
 
-@trigger_error(sprintf('The "%s" class is deprecated since Symfony 4.4, use "%s" instead.', ExceptionController::class, ExceptionPanelController::class), E_USER_DEPRECATED);
+@trigger_error(sprintf('The "%s" class is deprecated since Symfony 4.4, use "%s" instead.', ExceptionController::class, ExceptionPanelController::class), \E_USER_DEPRECATED);
 
 /**
  * ExceptionController.

Profiler/TemplateManager.php

@@ -102,7 +102,7 @@ public function getNames(Profile $profile)
     protected function templateExists($template/*, bool $triggerDeprecation = true */)
     {
         if (1 === \func_num_args()) {
-            @trigger_error(sprintf('The "%s()" method is deprecated since Symfony 4.4, use the "exists()" method of the Twig loader instead.', __METHOD__), E_USER_DEPRECATED);
+            @trigger_error(sprintf('The "%s()" method is deprecated since Symfony 4.4, use the "exists()" method of the Twig loader instead.', __METHOD__), \E_USER_DEPRECATED);
         }
 
         $loader = $this->twig->getLoader();

WebProfilerBundle.php

@@ -21,7 +21,7 @@ class WebProfilerBundle extends Bundle
     public function boot()
     {
         if ('prod' === $this->container->getParameter('kernel.environment')) {
-            @trigger_error('Using WebProfilerBundle in production is not supported and puts your project at risk, disable it.', E_USER_WARNING);
+            @trigger_error('Using WebProfilerBundle in production is not supported and puts your project at risk, disable it.', \E_USER_WARNING);
         }
     }
 }