[LOG4NET-21] RemotingAppender fails once NDC becomes empty

• Type: Bug
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 1.2.9
• Fix Version/s: 1.2.10
• Component/s: Core
• Assignee: Nicko Cadell
• Reporter: Nicko Cadell
• Created: 04/Apr/05 02:45
• Updated: 08/Mar/06 00:19
• Resolved: 04/Apr/05 03:23

Description

If an NDC, or any form of Context.Stack, is set on the current thread and then becomes empty the RemotingAppender will fail. This is caused by the LoggingEvent Properties failing to serialise due to an unexpected null value in the properties map.

The issue is caused by the GetObjectData method of log4net.Util.ReadOnlyPropertiesDictionary not coping with null values.

Issue reported by Sam Smoot.