From d4fe89a9dd31dd0a91650173cf5ad915f693d4c2 Mon Sep 17 00:00:00 2001
From: Tim Jenssen <tim.jenssen@qt.io>
Date: Wed, 31 Aug 2016 10:00:40 +0200
Subject: [PATCH] Clang: test if the ipcClientProxy is set before sending an
 alive message

A crash can be happen if the back end is slow like a debug build on
windows.

Change-Id: I7352ef2732d29ac60bb0c6d9906c10b7ebefa262
Reviewed-by: Marco Bubke <marco.bubke@qt.io>
---
 src/libs/clangbackendipc/connectionserver.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/libs/clangbackendipc/connectionserver.h b/src/libs/clangbackendipc/connectionserver.h
index bebb9657c86..4d9593ec505 100644
--- a/src/libs/clangbackendipc/connectionserver.h
+++ b/src/libs/clangbackendipc/connectionserver.h
@@ -106,7 +106,8 @@ private:
 
     void sendAliveMessage()
     {
-        ipcClientProxy->alive();
+        if (ipcClientProxy)
+            ipcClientProxy->alive();
     }
 
     void handleSocketDisconnect()