1 files changed, 21 insertions, 0 deletions
diff --git a/layout/reftests/bugs/393671-1.html b/layout/reftests/bugs/393671-1.html
new file mode 100644
index 000000000..01f3982b6
--- /dev/null
+++ b/layout/reftests/bugs/393671-1.html
@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<html>
+<head>
+<script>
+function boom()
+{
+  var floater = document.createElement("span");
+  floater.style.cssFloat = "right";
+  floater.appendChild(document.createTextNode("float"));
+
+  document.getElementById("s").appendChild(floater);
+}
+</script>
+</head>
+
+<body onload="boom();">
+
+<span><span id="s"><div></div></span></span>
+
+</body>
+</html>