Add a missing check

git-svn-id: https://svn.apache.org/repos/asf/tomcat/trunk@607597 13f79535-47bb-0310-9956-ffa450edef68

diff --git a/java/org/apache/catalina/ha/session/SerializablePrincipal.java b/java/org/apache/catalina/ha/session/SerializablePrincipal.java
index 20d5975..ebd2c9f 100644 (file)
--- 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;
+        }
     }