From 45f1316c62a5382d4615988c682b713032ee9ab4 Mon Sep 17 00:00:00 2001
From: Anthony Ramine <nox@nox.paris>
Date: Fri, 15 May 2020 12:12:54 +0200
Subject: [PATCH] Print element name when panicking in
 ThreadSafeLayoutElement::style_data

---
 components/layout_thread_2020/dom_wrapper.rs | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/components/layout_thread_2020/dom_wrapper.rs b/components/layout_thread_2020/dom_wrapper.rs
index 7b1da3454a01..15e19ee73a4c 100644
--- a/components/layout_thread_2020/dom_wrapper.rs
+++ b/components/layout_thread_2020/dom_wrapper.rs
@@ -1307,7 +1307,10 @@ impl<'le> ThreadSafeLayoutElement<'le> for ServoThreadSafeLayoutElement<'le> {
     }
 
     fn style_data(&self) -> AtomicRef<ElementData> {
-        self.element.borrow_data().expect("Unstyled layout node?")
+        match self.element.borrow_data() {
+            Some(data) => data,
+            None => panic!("could not find styles for <{}>", self.element.local_name()),
+        }
     }
 
     fn is_shadow_host(&self) -> bool {