Index: conf/catalina.policy
===================================================================
--- conf/catalina.policy	(revision 939554)
+++ conf/catalina.policy	(working copy)
@@ -178,3 +178,9 @@
 //      permission java.net.SocketPermission "*.noaa.gov:80", "connect";
 // };
 
+// Grant permissions to the context WEB-INF/classes directory of examples webapp
+grant codeBase "file:${catalina.home}/webapps/examples/WEB-INF/classes/-" {
+    // This grants access to o.a.catalina package, without subpackages
+    // It is needed to run the ChatServlet Comet API example
+    permission java.lang.RuntimePermission "accessClassInPackage.org.apache.catalina";
+};