From 8e6591b81b00e0a7897ef2f2c5f2d4974b9dbfef Mon Sep 17 00:00:00 2001
From: Anthony Ramine <n.oxyde@gmail.com>
Date: Tue, 6 Aug 2019 16:43:48 +0200
Subject: [PATCH] Fix a panic when using layout 2020

---
 components/style/properties/properties.mako.rs | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/components/style/properties/properties.mako.rs b/components/style/properties/properties.mako.rs
index 6915e19dde8..c16de38f204 100644
--- a/components/style/properties/properties.mako.rs
+++ b/components/style/properties/properties.mako.rs
@@ -505,8 +505,10 @@ impl NonCustomPropertyId {
             % if engine == "gecko":
                 unsafe { structs::nsCSSProps_gPropertyEnabled[self.0] }
             % else:
-                static PREF_NAME: [Option< &str>; ${len(data.longhands) + len(data.shorthands)}] = [
-                    % for property in data.longhands + data.shorthands:
+                static PREF_NAME: [Option< &str>; ${
+                    len(data.longhands) + len(data.shorthands) + len(data.all_aliases())
+                }] = [
+                    % for property in data.longhands + data.shorthands + data.all_aliases():
                         <%
                             attrs = {"servo-2013": "servo_2013_pref", "servo-2020": "servo_2020_pref"}
                             pref = getattr(property, attrs[engine])