From b976487b611fabb2b07c2e4dee197211d080fbb0 Mon Sep 17 00:00:00 2001
From: Shuotian Cheng <shuche@microsoft.com>
Date: Thu, 12 Jul 2018 21:42:00 -0700
Subject: [PATCH] [MirrorOrch]: Fix bug when NULL is returned from the getenv
 function (#537)

This fixes the error:
Failed due to exception: basic_string::_S_construct null not valid

when the environment variable 'platform' is not set.

Signed-off-by: Shu0T1an ChenG <shuche@microsoft.com>
---
 orchagent/mirrororch.cpp | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/orchagent/mirrororch.cpp b/orchagent/mirrororch.cpp
index bfd53636fc16..4c0380f1d3ee 100644
--- a/orchagent/mirrororch.cpp
+++ b/orchagent/mirrororch.cpp
@@ -194,7 +194,8 @@ void MirrorOrch::createEntry(const string& key, const vector<FieldValueTuple>& d
 {
     SWSS_LOG_ENTER();
 
-    MirrorEntry entry(getenv("platform"));
+    string platform = getenv("platform") ? getenv("platform") : "";
+    MirrorEntry entry(platform);
 
     for (auto i : data)
     {