- List<Appender> appenders = Collections.list(logger.getAllAppenders());
- for (Appender appender : appenders) {
- if (appender instanceof LttngLogAppender) {
- return true;
+ Enumeration<Appender> appenders = logger.getAllAppenders();
+ if (appenders != null) {
+ for (Appender appender : Collections.list(appenders)) {
+ if (appender instanceof LttngLogAppender) {
+ return true;
+ }