diff options
| -rw-r--r-- | dom/base/Element.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/dom/base/Element.cpp b/dom/base/Element.cpp index e77b43b86..c8467e036 100644 --- a/dom/base/Element.cpp +++ b/dom/base/Element.cpp @@ -482,6 +482,10 @@ Element::WrapObject(JSContext *aCx, JS::Handle<JSObject*> aGivenProto) data->GetCustomElementType(), &customProto); if (customProto && NodePrincipal()->SubsumesConsideringDomain(nsContentUtils::ObjectPrincipal(customProto))) { + // The custom element prototype could be in different compartment. + if (!JS_WrapObject(aCx, &customProto)) { + return nullptr; + } // Just go ahead and create with the right proto up front. Set // customProto to null to flag that we don't need to do any post-facto // proto fixups here. |