Bug 14467 - In BinaryFormatter.Deserialize within OnDeserialization throws a System.NullReferenceException when deseralizing a System.Collections.Hashtable but does not happen in
Summary: In BinaryFormatter.Deserialize within OnDeserialization throws a Sys...
Alias: None
Product: iOS
Classification: Xamarin
Component: General ()
Version: 6.4.4
Hardware: Macintosh Mac OS
: --- normal
Target Milestone: Untriaged
Assignee: Bugzilla
Depends on:
Reported: 2013-09-05 20:52 UTC by Eric Hosick
Modified: 2013-09-16 13:22 UTC (History)
3 users (show)

Is this bug a regression?: ---
Last known good build:

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Description Eric Hosick 2013-09-05 20:52:36 UTC
I've been using BinaryFormatter.Deserialize in a project for quite some time.

Today, after updating from to I started getting System.NullReferenceException when using the BinaryFormatter.Deserialize to deseralize a HashTable. I've had to roll back to
Comment 1 Sebastien Pouliot 2013-09-06 08:15:50 UTC
We might have inherited a recent mono bug while updated the BCL. Sadly it means that case was not covered by some unit tests (or used in our test applications).

Can you attach a small test case (unit test or a small app) that shows the issue. We'll fix this and ensure it gets part of the test suite. Thanks!
Comment 2 Sebastien Pouliot 2013-09-08 12:23:59 UTC
Also do you remember if the NRE occured:

* only occured on the simulator ?


* did the same happen on devices ?
Comment 3 Eric Hosick 2013-09-08 14:06:07 UTC
It was in the simulator.
Comment 4 Sebastien Pouliot 2013-09-09 10:11:45 UTC
If it works in release (not debug) build for the simulator (or on devices, debug or release) then it's likely a duplicate of bug #14493

Can you try this ? or supply a test case so we can validate this ?
Comment 5 Eric Hosick 2013-09-11 15:14:08 UTC
We will try to provide a test case. We are working hard to meet a deadline for a demo and are currently using Version of Xamarin.
Comment 6 Sebastien Pouliot 2013-09-11 15:35:32 UTC
I understand, no rush. When you have the time try first 6.4.5 which has a fix (the single fix for that release) for a very similar problem (bug #14552).

Setting back to NEEDINFO (which means we, Xamarin, are waiting on more information on the bug).
Comment 7 Eric Hosick 2013-09-16 13:22:03 UTC
I installed 6.4.5 and the issue went away. Thank you.