Claus created LOGBACK-1274: ------------------------------ Summary: Logback swallows output from Exceptions overriding toString() Key: LOGBACK-1274 URL: https://jira.qos.ch/browse/LOGBACK-1274 Project: logback Issue Type: Bug Components: logback-classic Affects Versions: 1.2.1 Environment: Windows, Java 8 Reporter: Claus Assignee: Logback dev list Attachments: logback.xml, LoggerTest.java When logging exceptions that overwrite toString() then logback ignores the output of it. For example: {code:java}    class OverridingException extends Exception {         @Override         public String toString() {             return super.toString() + " important additional information";         }     }{code} When used with logback the following code   {code:java} @Test     public void testName() {         org.slf4j.Logger logger = LoggerFactory.getLogger(LoggerTest.class);         try {             throw new OverridingException();         } catch (Throwable t) {             logger.error("", t);         }     }{code} produces output without the string "important additional information"   {code:java} 2017-03-08 16:44:27 [main] ERROR trial.LoggerTest - trial.LoggerTest$OverridingException: null     at trial.LoggerTest.testName(LoggerTest.java:32){code} while Java Util Logging outputs correctly   {code:java} Mär 08, 2017 4:44:27 PM trial.LoggerTest testLogging SCHWERWIEGEND: trial.LoggerTest$OverridingException important additional information     at trial.LoggerTest.testLogging(LoggerTest.java:22){code} Testfile and logback.xml attached.         -- This message was sent by Atlassian JIRA (v7.3.1#73012)