1 files changed, 4 insertions, 1 deletions
diff --git a/components/script/dom/formdata.rs b/components/script/dom/formdata.rs
index 0de17b83107..1a9f1252f53 100644
--- a/components/script/dom/formdata.rs
+++ b/components/script/dom/formdata.rs
@@ -19,12 +19,14 @@ use std::cell::RefCell;
 use std::collections::hashmap::HashMap;
 
 #[deriving(Encodable, Clone)]
+#[must_root]
 pub enum FormDatum {
     StringData(DOMString),
     FileData(JS<File>)
 }
 
 #[deriving(Encodable)]
+#[must_root]
 pub struct FormData {
     data: Traceable<RefCell<HashMap<DOMString, Vec<FormDatum>>>>,
     reflector_: Reflector,
@@ -53,6 +55,7 @@ impl FormData {
 }
 
 impl<'a> FormDataMethods for JSRef<'a, FormData> {
+    #[allow(unrooted_must_root)]
     fn Append(&self, name: DOMString, value: &JSRef<Blob>, filename: Option<DOMString>) {
         let file = FileData(JS::from_rooted(&self.get_file_from_blob(value, filename)));
         self.data.deref().borrow_mut().insert_or_update_with(name.clone(), vec!(file.clone()),
@@ -84,7 +87,7 @@ impl<'a> FormDataMethods for JSRef<'a, FormData> {
     fn Has(&self, name: DOMString) -> bool {
         self.data.deref().borrow().contains_key_equiv(&name)
     }
-
+    #[allow(unrooted_must_root)]
     fn Set(&self, name: DOMString, value: &JSRef<Blob>, filename: Option<DOMString>) {
         let file = FileData(JS::from_rooted(&self.get_file_from_blob(value, filename)));
         self.data.deref().borrow_mut().insert(name, vec!(file));