From fd5fe0a8e38dfdbd5792cd35f61ea8a83dfb340e Mon Sep 17 00:00:00 2001
From: Cameron McCormack <cam@mcc.id.au>
Date: Wed, 13 Sep 2017 16:38:46 +0800
Subject: [PATCH] style: Don't cache structs with custom property references.

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

diff --git a/components/style/properties/properties.mako.rs b/components/style/properties/properties.mako.rs
index 9e753e054b6..3fa6bcb6e04 100644
--- a/components/style/properties/properties.mako.rs
+++ b/components/style/properties/properties.mako.rs
@@ -3298,6 +3298,10 @@ where
         for (declaration, cascade_level) in iter_declarations() {
             let mut declaration = match *declaration {
                 PropertyDeclaration::WithVariables(id, ref unparsed) => {
+                    if !id.inherited() {
+                        context.rule_cache_conditions.borrow_mut()
+                            .set_uncacheable();
+                    }
                     Cow::Owned(unparsed.substitute_variables(
                         id,
                         &context.builder.custom_properties,