Merge branch '4.0' into 4.1

* 4.0:
  Enable native_constant_invocation CS fixer

Author: nicolas-grekas

Loader/XliffFileLoader.php

@@ -228,7 +228,7 @@ private function fixXmlLocation(string $schemaSource, string $xmlUri): string
             }
         }
 
-        $drive = '\\' === DIRECTORY_SEPARATOR ? array_shift($parts).'/' : '';
+        $drive = '\\' === \DIRECTORY_SEPARATOR ? array_shift($parts).'/' : '';
         $newPath = $locationstart.$drive.implode('/', array_map('rawurlencode', $parts));
 
         return str_replace($xmlUri, $newPath, $schemaSource);

Tests/TranslatorTest.php

@@ -297,12 +297,12 @@ public function testFallbackCatalogueResources()
 
         $resources = $translator->getCatalogue('en')->getResources();
         $this->assertCount(1, $resources);
-        $this->assertContains(__DIR__.DIRECTORY_SEPARATOR.'fixtures'.DIRECTORY_SEPARATOR.'resources.yml', $resources);
+        $this->assertContains(__DIR__.\DIRECTORY_SEPARATOR.'fixtures'.\DIRECTORY_SEPARATOR.'resources.yml', $resources);
 
         $resources = $translator->getCatalogue('en_GB')->getResources();
         $this->assertCount(2, $resources);
-        $this->assertContains(__DIR__.DIRECTORY_SEPARATOR.'fixtures'.DIRECTORY_SEPARATOR.'empty.yml', $resources);
-        $this->assertContains(__DIR__.DIRECTORY_SEPARATOR.'fixtures'.DIRECTORY_SEPARATOR.'resources.yml', $resources);
+        $this->assertContains(__DIR__.\DIRECTORY_SEPARATOR.'fixtures'.\DIRECTORY_SEPARATOR.'empty.yml', $resources);
+        $this->assertContains(__DIR__.\DIRECTORY_SEPARATOR.'fixtures'.\DIRECTORY_SEPARATOR.'resources.yml', $resources);
     }
 
     /**