From 1d7d13850b664403463c293b7390e923809029c9 Mon Sep 17 00:00:00 2001
From: markt <markt@13f79535-47bb-0310-9956-ffa450edef68>
Date: Sun, 30 Dec 2007 22:02:32 +0000
Subject: [PATCH] Add a missing check

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@607597 13f79535-47bb-0310-9956-ffa450edef68
---
 java/org/apache/catalina/ha/session/SerializablePrincipal.java | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/java/org/apache/catalina/ha/session/SerializablePrincipal.java b/java/org/apache/catalina/ha/session/SerializablePrincipal.java
index 20d597590..ebd2c9fee 100644
--- a/java/org/apache/catalina/ha/session/SerializablePrincipal.java
+++ b/java/org/apache/catalina/ha/session/SerializablePrincipal.java
@@ -105,8 +105,9 @@ public class SerializablePrincipal  implements java.io.Serializable {
             if (this.roles.length > 0)
                 Arrays.sort(this.roles);
         }
-        this.userPrincipal = userPrincipal;
-
+        if (userPrincipal instanceof Serializable) {
+            this.userPrincipal = userPrincipal;
+        }
     }
 
 
-- 
2.11.0