From 85b65fc0d3c5e6ceca3f79b24f6e8f3c83a3f136 Mon Sep 17 00:00:00 2001
From: Manish Goregaokar <manishsmail@gmail.com>
Date: Mon, 26 Sep 2016 10:59:41 +0200
Subject: [PATCH] Don't crash when #[dom_struct] is applied on an empty struct

---
 components/plugins/reflector.rs | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/components/plugins/reflector.rs b/components/plugins/reflector.rs
index 04e22fa826c..27f8054fd54 100644
--- a/components/plugins/reflector.rs
+++ b/components/plugins/reflector.rs
@@ -12,6 +12,11 @@ pub fn expand_reflector(cx: &mut ExtCtxt, span: Span, _: &MetaItem, annotatable:
                         push: &mut FnMut(Annotatable)) {
     if let &Annotatable::Item(ref item) = annotatable {
         if let ItemKind::Struct(ref def, _) = item.node {
+            if def.fields().is_empty() {
+                cx.span_err(span, "#[dom_struct] should have a reflector or \
+                                   parent dom struct as its first field");
+                return;
+            }
             let struct_name = item.ident;
             // This path has to be hardcoded, unfortunately, since we can't resolve paths at expansion time
             match def.fields().iter().find(