From 2c7cbf0d41b16bd47247d300f2fa6911e0b152be Mon Sep 17 00:00:00 2001
From: Jan Peter Stotz <jan-peter.stotz@sit.fraunhofer.de>
Date: Mon, 27 Mar 2017 14:26:02 +0200
Subject: [PATCH] bugfix for issue #457: pattern %z (process id) can not be
 padded/truncated

---
 lib/layouts.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/layouts.js b/lib/layouts.js
index 9a15317..aac5144 100644
--- a/lib/layouts.js
+++ b/lib/layouts.js
@@ -249,7 +249,7 @@ function patternLayout(pattern, tokens, timezoneOffset) {
   }
 
   function pid(loggingEvent) {
-    return loggingEvent && loggingEvent.pid ? loggingEvent.pid : process.pid;
+    return loggingEvent && loggingEvent.pid ? loggingEvent.pid.toString() : process.pid.toString();
   }
 
   function clusterInfo(loggingEvent, specifier) {