1 files changed, 8 insertions, 0 deletions
diff --git a/js/src/proxy/OpaqueCrossCompartmentWrapper.cpp b/js/src/proxy/OpaqueCrossCompartmentWrapper.cpp
index ff3f4145c..02bf237ff 100644
--- a/js/src/proxy/OpaqueCrossCompartmentWrapper.cpp
+++ b/js/src/proxy/OpaqueCrossCompartmentWrapper.cpp
@@ -175,6 +175,14 @@ OpaqueCrossCompartmentWrapper::isArray(JSContext* cx, HandleObject obj,
     return true;
 }
 
+bool OpaqueCrossCompartmentWrapper::hasInstance(JSContext* cx,
+                                                HandleObject wrapper,
+                                                MutableHandleValue v,
+                                                bool* bp) const {
+  *bp = false;
+  return true;
+}
+
 const char*
 OpaqueCrossCompartmentWrapper::className(JSContext* cx,
                                          HandleObject proxy) const