1 files changed, 13 insertions, 0 deletions
diff --git a/js/src/vm/RegExpObject.cpp b/js/src/vm/RegExpObject.cpp
index 97f1163aa..e0b44e1eb 100644
--- a/js/src/vm/RegExpObject.cpp
+++ b/js/src/vm/RegExpObject.cpp
@@ -196,6 +196,12 @@ RegExpObject::trace(JSTracer* trc, JSObject* obj)
     }
 }
 
+static JSObject*
+CreateRegExpPrototype(JSContext* cx, JSProtoKey key)
+{
+    return cx->global()->createBlankPrototype(cx, &RegExpObject::protoClass_);
+}
+
 static const ClassOps RegExpObjectClassOps = {
     nullptr, /* addProperty */
     nullptr, /* delProperty */
@@ -229,6 +235,13 @@ const Class RegExpObject::class_ = {
     &RegExpObjectClassSpec
 };
 
+const Class RegExpObject::protoClass_ = {
+    js_Object_str,
+    JSCLASS_HAS_CACHED_PROTO(JSProto_RegExp),
+    JS_NULL_CLASS_OPS,
+    &RegExpObjectClassSpec
+};
+
 RegExpObject*
 RegExpObject::create(ExclusiveContext* cx, const char16_t* chars, size_t length, RegExpFlag flags,
                      TokenStream* tokenStream, LifoAlloc& alloc)