symfony
diff --git a/‎src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php
Copy file name to clipboardExpand all lines: src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php
+9-1Lines changed: 9 additions & 1 deletion b/‎src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php
Copy file name to clipboardExpand all lines: src/Symfony/Component/DependencyInjection/Dumper/PhpDumper.php
+9-1Lines changed: 9 additions & 1 deletion
@@ -2017,7 +2017,15 @@ private function export($value)
             $suffix = $matches[0][1] + \strlen($matches[0][0]);
             $matches[0][1] += \strlen($matches[1][0]);
             $prefix = $matches[0][1] ? $this->doExport(substr($value, 0, $matches[0][1]), true).'.' : '';
-            $suffix = isset($value[$suffix]) ? '.'.$this->doExport(substr($value, $suffix), true) : '';
+
+            if ('\\' === \DIRECTORY_SEPARATOR && isset($value[$suffix])) {
+                $cookie = '\\'.random_int(100000, \PHP_INT_MAX);
+                $suffix = '.'.$this->doExport(str_replace('\\', $cookie, substr($value, $suffix)), true);
+                $suffix = str_replace('\\'.$cookie, "'.\\DIRECTORY_SEPARATOR.'", $suffix);
+            } else {
+                $suffix = isset($value[$suffix]) ? '.'.$this->doExport(substr($value, $suffix), true) : '';
+            }
+
             $dirname = $this->asFiles ? '$this->containerDir' : '__DIR__';
             $offset = 2 + $this->targetDirMaxMatches - \count($matches);