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http://nagoya.apache.org/bugzilla/show_bug.cgi?id=11186 DefaultRenderer.doRender() does not handle NullPointerException in <logged object>.toString() Summary: DefaultRenderer.doRender() does not handle NullPointerException in <logged object>.toString() Product: Log4j Version: 1.1 Platform: All OS/Version: All Status: NEW Severity: Minor Priority: Other Component: Other AssignedTo: [EMAIL PROTECTED] ReportedBy: [EMAIL PROTECTED] Here is a stack trace from a call to Category.error() in Log4J 1.1.3. As you can see, if the logged object's toString method throws a runtime exception, it is not caught by Log4J and causes a crash. I understand that it is part of Log4J's contract that a logging call will *never* throw an exception, therefore this is a log4j bug. (I am also aware that toString() should not throw stupid exceptions like this, but that is another story.) java.lang.NullPointerException at nz.co.vodafone.vfnzframework.common.logging.MultiPartLogContentHolder.toString (MultiPartLogContentHolder.java:72) at org.apache.log4j.or.DefaultRenderer.doRender(DefaultRenderer.java:26) at org.apache.log4j.or.RendererMap.findAndRender(RendererMap.java:39) at org.apache.log4j.spi.LoggingEvent.getRenderedMessage (LoggingEvent.java:172) at org.apache.log4j.helpers.PatternParser$BasicPatternConverter.convert (PatternParser.java:393) at org.apache.log4j.helpers.PatternConverter.format (PatternConverter.java:56) at org.apache.log4j.PatternLayout.format(PatternLayout.java:547) at org.apache.log4j.WriterAppender.subAppend(WriterAppender.java:295) at org.apache.log4j.WriterAppender.append(WriterAppender.java:157) at org.apache.log4j.AppenderSkeleton.doAppend(AppenderSkeleton.java:251) at org.apache.log4j.helpers.AppenderAttachableImpl.appendLoopOnAppenders (AppenderAttachableImpl.java:57) at org.apache.log4j.Category.callAppenders(Category.java:255) at org.apache.log4j.Category.forcedLog(Category.java:445) at org.apache.log4j.Category.error(Category.java:380) at nz.co.vodafone.vfnzframework.common.logging.Log4JLogMgr.error (Log4JLogMgr.java:30) -- To unsubscribe, e-mail: <mailto:[EMAIL PROTECTED]> For additional commands, e-mail: <mailto:[EMAIL PROTECTED]>
