From e7a300bf9e639b2d38db2d39a72b72cbd1c30337 Mon Sep 17 00:00:00 2001
From: Dirk Zimoch <dirk.zimoch@psi.ch>
Date: Tue, 3 Mar 2020 16:51:34 +0100
Subject: [PATCH] fix potential crash

---
 src/libCom/logClient/logClient.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/libCom/logClient/logClient.c b/src/libCom/logClient/logClient.c
index 692ac3105..f7c9b9ca0 100644
--- a/src/libCom/logClient/logClient.c
+++ b/src/libCom/logClient/logClient.c
@@ -516,6 +516,9 @@ logClientId epicsShareAPI logClientCreate (
 void epicsShareAPI logClientShow (logClientId id, unsigned level)
 {
     logClient *pClient = (logClient *) id;
+    if ( ! pClient ) {
+        return;
+    }
 
     if ( pClient->connected ) {
         printf ("log client: connected to log server at \"%s\"\n", pClient->name);