From e63b46ff797aba92eb3514754888a39eb478ece4 Mon Sep 17 00:00:00 2001
From: Javier Eguiluz <javier.eguiluz@gmail.com>
Date: Wed, 11 Oct 2017 16:33:42 +0200
Subject: [PATCH] Document the new RequestExceptionInterface

---
 components/http_kernel.rst | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/components/http_kernel.rst b/components/http_kernel.rst
index 3d06372282e..945364107d6 100644
--- a/components/http_kernel.rst
+++ b/components/http_kernel.rst
@@ -595,7 +595,12 @@ below for more details).
        use the ``setHeaders()`` method on exceptions derived from the
        :class:`Symfony\\Component\\HttpKernel\\Exception\\HttpException` class.
 
-    3) A controller is executed and passed the flattened exception. The exact
+    3) If the original exception implements
+       :class:`Symfony\\Component\\HttpKernel\\Exception\\RequestExceptionInterface`,
+       then the status code of the ``FlattenException`` object is populated with
+       ``400`` and no other headers are modified.
+
+    4) A controller is executed and passed the flattened exception. The exact
        controller to render is passed as a constructor argument to this listener.
        This controller will return the final ``Response`` for this error page.