diff -r 000000000000 -r 6474c204b198 layout/base/crashtests/360339-2.xul
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/layout/base/crashtests/360339-2.xul	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,20 @@
+<?xml version="1.0" ?>
+<?xml-stylesheet href="chrome://global/skin/" type="text/css" ?>
+
+<window xmlns:html="http://www.w3.org/1999/xhtml"
+        xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
+
+<html:style>
+* { float: right; }
+#ping { float: none; }
+</html:style>
+
+<hbox>
+  <menulist>
+    <menupopup id="ping">
+      <menuitem label="1"/>
+    </menupopup>
+  </menulist>
+</hbox>
+
+</window>