preserveObjectReferences can result in InvalidCastException

[zbynek001]

when Uri is serialized with preserveObjectReferences and versionTolerance enabled, deserialization will fail with InvalidCastException.

It happens like this. During serialization,

• SerializerSession will track Uri itself
• Uri contains the url itself in several fields as string
• it'll try to serialize the string value
• session.TryGetObjectId will find the previous object, unfortunatelly it won't be string, but Uri
• Later, during deserialization, this will result in InvalidCastException

Reason is, that SerializerSession is using default equality comparer for tracked objects and string and Uri are equal, when having the same value.

[Horusiath]

Possible duplicate of #85 ?

[zbynek001]

Not sure, but I'd say it's not the same issue