From a7cf062930e48146802ff83c268164bc8bc0f5db Mon Sep 17 00:00:00 2001
From: Rohit Grover <rohit.grover@arm.com>
Date: Fri, 5 Jun 2015 08:01:58 +0100
Subject: [PATCH] add a sanity check to DiscoveredCharacteristic::read().

---
 common/DiscoveredCharacteristic.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/common/DiscoveredCharacteristic.cpp b/common/DiscoveredCharacteristic.cpp
index dc9b386..6b04ca1 100644
--- a/common/DiscoveredCharacteristic.cpp
+++ b/common/DiscoveredCharacteristic.cpp
@@ -37,6 +37,10 @@ DiscoveredCharacteristic::read(uint16_t offset) const
         return BLE_ERROR_OPERATION_NOT_PERMITTED;
     }
 
+    if (!gattc) {
+        return BLE_ERROR_INVALID_STATE;
+    }
+
     return gattc->read(connHandle, valueHandle, offset);
 }