From 090277e7a5ea1d938777acb92e7b6759936ea974 Mon Sep 17 00:00:00 2001
From: Sandeep Agarwal <saagarwa@microsoft.com>
Date: Tue, 6 Feb 2018 17:53:05 -0800
Subject: [PATCH] [CVE-2018-0939] Edge - chakra arguments bug version 2.0 -
 Individual

Object destructuring should track assignment in case of default value
---
 lib/Parser/Parse.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib/Parser/Parse.cpp b/lib/Parser/Parse.cpp
index 69159a77e0b..b40139455cb 100644
--- a/lib/Parser/Parse.cpp
+++ b/lib/Parser/Parse.cpp
@@ -12904,6 +12904,10 @@ ParseNodePtr Parser::GetRightSideNodeFromPattern(ParseNodePtr pnode)
         {
             TrackAssignment<true>(pnode, nullptr);
         }
+        else if (op == knopAsg)
+        {
+            TrackAssignment<true>(pnode->sxBin.pnode1, nullptr);
+        }
     }
 
     return rightNode;