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When I build, rebuild, or debug with the Ad-Hoc profile the build breaks with the below error message. This only started occurring after an update to the latest version from the previous version. This happens on both VS2015 and 2017
C:\Program Files (x86)\Microsoft Visual Studio\2017\Professional\MSBuild\Xamarin\iOS\Xamarin.iOS.Common.targets(748,4): error : Unexpected error - Please file a bug report at http://bugzilla.xamarin.com
2> System.NullReferenceException: Object reference not set to an instance of an object
2> at MonoTouch.Tuner.Linker.Process (MonoTouch.Tuner.LinkerOptions options, MonoTouch.Tuner.MonoTouchLinkContext& context, System.Collections.Generic.List`1[Mono.Cecil.AssemblyDefinition]& assemblies) [0x00145] in /Users/builder/data/lanes/4991/4a279c9a/source/xamarin-macios/tools/mtouch/Tuning.cs:94
2> at Xamarin.Bundler.Target.LinkAssemblies (System.Collections.Generic.List`1[Mono.Cecil.AssemblyDefinition]& assemblies, System.String output_dir, System.Collections.Generic.IEnumerable`1[T] sharedCodeTargets) [0x0029a] in /Users/builder/data/lanes/4991/4a279c9a/source/xamarin-macios/tools/mtouch/Target.cs:491
2> at Xamarin.Bundler.Target.ManagedLink () [0x005c5] in /Users/builder/data/lanes/4991/4a279c9a/source/xamarin-macios/tools/mtouch/Target.cs:614
2> at Xamarin.Bundler.Target.ProcessAssemblies () [0x000bb] in /Users/builder/data/lanes/4991/4a279c9a/source/xamarin-macios/tools/mtouch/Target.cs:800
2> at Xamarin.Bundler.Application.ProcessAssemblies () [0x0002f] in /Users/builder/data/lanes/4991/4a279c9a/source/xamarin-macios/tools/mtouch/Application.cs:1396
2> at Xamarin.Bundler.Application.BuildManaged () [0x00001] in /Users/builder/data/lanes/4991/4a279c9a/source/xamarin-macios/tools/mtouch/Application.cs:827
2> at Xamarin.Bundler.Application+<>c.<BuildAll>b__134_1 (Xamarin.Bundler.Application v) [0x00000] in /Users/builder/data/lanes/4991/4a279c9a/source/xamarin-macios/tools/mtouch/Application.cs:775
2> at System.Collections.Generic.List`1[T].ForEach (System.Action`1[T] action) [0x00024] in <c9f8153c41de4f8cbafd0e32f9bf6b28>:0
2> at Xamarin.Bundler.Application.BuildAll () [0x00050] in /Users/builder/data/lanes/4991/4a279c9a/source/xamarin-macios/tools/mtouch/Application.cs:775
2> at Xamarin.Bundler.Driver.Main2 (System.String args) [0x00481] in /Users/builder/data/lanes/4991/4a279c9a/source/xamarin-macios/tools/mtouch/mtouch.cs:1420
2> at Xamarin.Bundler.Driver.Main (System.String args) [0x0000f] in /Users/builder/data/lanes/4991/4a279c9a/source/xamarin-macios/tools/mtouch/mtouch.cs:945
Please include your full build logs, all your version information and the most important thing a test case (to reproduce).
To get full build logs just set the log verbosity to diagnostic at the following locations:
- On Visual Studio for Mac: Preferences > Projects > Build
- On Visual Studio for Windows: Tools > Options > Projects and Solutions > Build and Run
On Visual Studio Windows you also want to add `-v -v -v -v` to the mtouch additional arguments by right-clicking the project in the solution explorer and selecting `Properties`.
Note: this is done automatically on Visual Studio for Mac when the log verbosity is set to diagnostic.
The easiest way to get exact version information:
- On Visual Studio for Mac: "Visual Studio" menu, "About Visual Studio" item, "Show Details" button.
- On Visual Studio for Windows: "Help menu", "About Microsoft Visual Studio" item.
Then copy/paste the version information (you can use the "Copy Information"
## Cross-referencing note for the Xamarin team
This appears to match the stack trace of Bug 58777, so both reports might be about the same underlying issue. Bug 58777 is similarly waiting on additional log information and/or a test case.
Created attachment 24204 [details]
Build output with diagnostic logging
Created attachment 24205 [details]
Created attachment 24206 [details]
Build output with -v -v -v -v params
I apologize, i was working through the list and did not see the mtouch arguments part when i first submitted the output. Here it is again, this time with that info
Thanks for the report and extra information!
*** This bug has been marked as a duplicate of bug 58789 ***