[Mono-bugs] [Bug 775116] New: TimeZoneInfo throws exception when serialized

bugzilla_noreply at novell.com bugzilla_noreply at novell.com
Wed Aug 8 19:48:07 UTC 2012



           Summary: TimeZoneInfo throws exception when serialized
    Classification: Mono
           Product: Mono: Class Libraries
           Version: 2.10.x
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: Major
          Priority: P5 - None
         Component: Sys.Core
        AssignedTo: michael.miller at suse.com
        ReportedBy: jclegg at reflexsystems.com
         QAContact: mono-bugs at lists.ximian.com
          Found By: ---
           Blocker: ---

User-Agent:       Mozilla/5.0 (Windows NT 6.1; WOW64; rv:14.0) Gecko/20100101

TimeZoneInfo implements ISerializable, but the GetObjectData() method simply
throws a NotImplementedException.   

Someone should be able to serialize an object of this type using a
(works on MS .NET, and it's marked as serializable), but because of this, you
get an exception if you try.

Reproducible: Always

Steps to Reproduce:
1. Create a TimeZoneInfo instance
2. Try to serialize it with a BinaryFormatter

Actual Results:  
throw exception

Expected Results:  
it should serialize the object properly without throwing an exception.  It
should have code to deserialize the object as well.

This snippet will throw the exception.  It doesnt matter if it's the local time
zone or any other:

TimeZoneInfo tzi = TimeZoneInfo.Local;
BinaryFormatter bf = new BinaryFormatter();
MemoryStream ms = new MemoryStream();
bf.Serialize(ms, tzi);
ms.Seek(0, SeekOrigin.Begin);
var tzi2= bf.Deserialize(ms);

/// in the TimeZoneInfo class, the following (lack of) code is the problem:

void ISerializable.GetObjectData (SerializationInfo info, StreamingContext 
throw new NotImplementedException ();
void IDeserializationCallback.OnDeserialization (object sender)
throw new NotImplementedException ();

it looks like there is also a missing custom deserialization constructor

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