From 2df0289ae90dddb13dd89771c29ac59b80b05310 Mon Sep 17 00:00:00 2001
From: deepikabhavnani <deepika.bhavnani@arm.com>
Date: Mon, 26 Nov 2018 09:53:19 -0600
Subject: [PATCH] Resolve build issue for unittest
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Error Resolved here is:
SingletonPtr.h:93:13: error: ‘NULL’ was not declared in this scope
---
 platform/SingletonPtr.h | 1 +
 1 file changed, 1 insertion(+)

diff --git a/platform/SingletonPtr.h b/platform/SingletonPtr.h
index 595d9807ca..81791ca93f 100644
--- a/platform/SingletonPtr.h
+++ b/platform/SingletonPtr.h
@@ -23,6 +23,7 @@
 #ifndef SINGLETONPTR_H
 #define SINGLETONPTR_H
 
+#include <stdlib.h>
 #include <stdint.h>
 #include <new>
 #include "platform/mbed_assert.h"