From 2ea840b045e7db434d6960f72f5313b9621ffd03 Mon Sep 17 00:00:00 2001
From: Gaming4JC <g4jc@hyperbola.info>
Date: Sat, 8 Jun 2019 18:43:21 -0400
Subject: 1175823 - Implement [[DefineOwnProperty]] for mapped arguments
 object.

---
 js/src/jsobj.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'js/src/jsobj.cpp')

diff --git a/js/src/jsobj.cpp b/js/src/jsobj.cpp
index 5f6331ac8..bea01daf4 100644
--- a/js/src/jsobj.cpp
+++ b/js/src/jsobj.cpp
@@ -471,7 +471,7 @@ js::SetIntegrityLevel(JSContext* cx, HandleObject obj, IntegrityLevel level)
 
     // Steps 8-9, loosely interpreted.
     if (obj->isNative() && !obj->as<NativeObject>().inDictionaryMode() &&
-        !obj->is<TypedArrayObject>())
+        !obj->is<TypedArrayObject>() && !obj->is<MappedArgumentsObject>())
     {
         HandleNativeObject nobj = obj.as<NativeObject>();
 
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