Bug 11984 - mdtool crash with Mono 3.0.10
Summary: mdtool crash with Mono 3.0.10
Alias: None
Product: Xamarin Studio
Classification: Desktop
Component: General ()
Version: 4.0.4
Hardware: Macintosh Mac OS
: Normal normal
Target Milestone: ---
Assignee: Lluis Sanchez
Depends on:
Reported: 2013-04-26 05:42 UTC by Francesco P
Modified: 2013-06-25 12:06 UTC (History)
2 users (show)

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

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Description Francesco P 2013-04-26 05:42:53 UTC
I've just updated via the Xamarin.Studio autoupdate tool (beta channel).
So my current versions are:
Xamarin.Studio 4.0.4
Mono 3.0.10

I have a solution that was building fine with Mono 3.0.6, now when I build from Monodevelop all works fine as I expected, but when I'm running make from command line (which invokes mdtool to build the solution) I have this stack trace in the output and the build fails:

System.NullReferenceException: Object reference not set to an instance of an object
  at Mono.Addins.ExtensionNode.add_ExtensionNodeChanged (Mono.Addins.ExtensionNodeEventHandler value) [0x00007] in /Users/builder/data/lanes/monodevelop-lion-evolve_fixed/a8bf58d3/source/monodevelop/main/external/mono-addins/Mono.Addins/Mono.Addins/ExtensionNode.cs:170 
  at Mono.Addins.ExtensionContext.AddExtensionNodeHandler (System.String path, Mono.Addins.ExtensionNodeEventHandler handler) [0x0001f] in /Users/builder/data/lanes/monodevelop-lion-evolve_fixed/a8bf58d3/source/monodevelop/main/external/mono-addins/Mono.Addins/Mono.Addins/ExtensionContext.cs:693 
  at Mono.Addins.AddinManager.AddExtensionNodeHandler (System.String path, Mono.Addins.ExtensionNodeEventHandler handler) [0x0000a] in /Users/builder/data/lanes/monodevelop-lion-evolve_fixed/a8bf58d3/source/monodevelop/main/external/mono-addins/Mono.Addins/Mono.Addins/AddinManager.cs:727 
  at MonoDevelop.Core.Assemblies.TargetRuntime.EnsureInitialized () [0x0006d] in /Users/builder/data/lanes/monodevelop-lion-evolve_fixed/a8bf58d3/source/monodevelop/main/src/core/MonoDevelop.Core/MonoDevelop.Core.Assemblies/TargetRuntime.cs:366 
  at MonoDevelop.Core.Assemblies.TargetRuntime.get_RuntimeAssemblyContext () [0x00000] in /Users/builder/data/lanes/monodevelop-lion-evolve_fixed/a8bf58d3/source/monodevelop/main/src/core/MonoDevelop.Core/MonoDevelop.Core.Assemblies/TargetRuntime.cs:175 
  at MonoDevelop.Core.AddIns.PackageInstalledCondition.Evaluate (NodeElement conditionNode) [0x00000] in /Users/builder/data/lanes/monodevelop-lion-evolve_fixed/a8bf58d3/source/monodevelop/main/src/core/MonoDevelop.Core/MonoDevelop.Core.AddIns/PackageInstalledCondition.cs:37 
  at MonoDevelop.Core.AddIns.PackageNotInstalledCondition.Evaluate (NodeElement conditionNode) [0x00000] in /Users/builder/data/lanes/monodevelop-lion-evolve_fixed/a8bf58d3/source/monodevelop/main/src/core/MonoDevelop.Core/MonoDevelop.Core.AddIns/PackageInstalledCondition.cs:58 
  at Mono.Addins.Condition.Evaluate (Mono.Addins.ExtensionContext ctx) [0x00046] in /Users/builder/data/lanes/monodevelop-lion-evolve_fixed/a8bf58d3/source/monodevelop/main/external/mono-addins/Mono.Addins/Mono.Addins/ConditionType.cs:213 
* Assertion at threads.c:1360, condition `internal' not met

Happy to provide other information if needed, for now I fix by reverting to Mono 3.0.6 (haven't tried versions in the middle).
Comment 1 Francesco P 2013-05-08 11:12:15 UTC
Some further information on this:
3.0.8 works fine, 3.0.10 doesn't. Verified this last week.
Comment 2 Dave Morris 2013-06-24 12:22:37 UTC
I'm experiencing the same issues on OS/X with the latest Xamarin beta. Any ideas on how to fix this?
Comment 3 Lluis Sanchez 2013-06-25 11:41:24 UTC
This is a known issue in 3.0.10. Please update to 3.0.12.
Comment 4 Dave Morris 2013-06-25 11:52:33 UTC
What's the proper way to upgrade mdtool? Is it to install the Xamarin Studio Alpha?
Comment 5 Lluis Sanchez 2013-06-25 12:06:02 UTC
mdtool is ok, you have to upgrade Mono. Mono 3.0.12 is already in the alpha/beta channel.