From d717382c0c922e92165d9eead86c7b04e9ee4bc8 Mon Sep 17 00:00:00 2001
From: Simon Sapin <simon.sapin@exyr.org>
Date: Sun, 8 Dec 2019 10:22:11 +0100
Subject: [PATCH] Disable in Layout 2020 an assertion that does not apply there

---
 components/style/values/specified/box.rs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/components/style/values/specified/box.rs b/components/style/values/specified/box.rs
index 7fd5a250e06..1fea857d3e8 100644
--- a/components/style/values/specified/box.rs
+++ b/components/style/values/specified/box.rs
@@ -454,10 +454,11 @@ impl ToCss for Display {
     where
         W: fmt::Write,
     {
+        #[cfg(any(feature = "servo-layout-2013", feature = "gecko"))]
         debug_assert_ne!(
             self.inside(),
             DisplayInside::Flow,
-            "`flow` never appears in `display` computed value"
+            "`flow` fears in `display` computed value"
         );
         let outside = self.outside();
         let inside = match self.inside() {