From d5da9eb6367ff15bac83dadbadd787e4f1965f75 Mon Sep 17 00:00:00 2001
From: deepikabhavnani <deepika.bhavnani@arm.com>
Date: Tue, 30 Oct 2018 13:39:59 -0500
Subject: [PATCH] Resolved warning "call_in inherits implicit virtual"

---
 features/lwipstack/LWIPStack.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/features/lwipstack/LWIPStack.h b/features/lwipstack/LWIPStack.h
index 4c13ab3946..c35c3c239d 100644
--- a/features/lwipstack/LWIPStack.h
+++ b/features/lwipstack/LWIPStack.h
@@ -450,7 +450,7 @@ private:
      *  @param func     Callback to be called
      *  @return         0 on success, negative error code on failure
      */
-    nsapi_error_t call_in(int delay, mbed::Callback<void()> func);
+    virtual nsapi_error_t call_in(int delay, mbed::Callback<void()> func);
 
     struct mbed_lwip_socket {
         bool in_use;