1 files changed, 20 insertions, 0 deletions
diff --git a/layout/xul/crashtests/583957-1.html b/layout/xul/crashtests/583957-1.html
new file mode 100644
index 000000000..85b51bf0c
--- /dev/null
+++ b/layout/xul/crashtests/583957-1.html
@@ -0,0 +1,20 @@
+<html>
+<head>
+<script>
+
+function boom()
+{
+  window.addEventListener("DOMSubtreeModified", function(){}, false);
+
+  var m = document.createElementNS("http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul", "menuitem");
+  document.body.appendChild(m);
+  m.setAttribute("type", "checkbox");
+  m.setAttribute("checked", "true");
+  m.removeAttribute("type");
+}
+
+</script>
+</head>
+
+<body onload="boom();"></body>
+</html>