IL2CPP UnusedBytecodeStripper2.exe crash when building IOS

Target Platforms Mobile
1

I’ve been getting the error below when building my project for IL2CPP. I’ve been trying to nail down the exact problem (problem script?) but failing… I opened a new project, copied in all my assets one by one (and then project settings) until the project was identical, no problem… Switched back to my project, problem gone.
I can’t really submit a minimum project until I have a reliable project…

Now… (and hour or two later) it’s come back again. I’ve done a few git branch changes in the mean time, but that’s really all I can think of which might be a problem.
This wasn’t working in 5.1.2f1, so tried 5.1.3p1, no difference.

I have a script with some marshalling, (which builds fine, runs on android/osx and ios… WHEN it builds)
I have all stripping settings off (Maybe these don’t apply to IL2CPP)

Are there any clues here that might help me hone in on what is broken?

Failed running /Applications/Unity 5.1.3p1/Unity.app/Contents/Frameworks/Tools/UnusedByteCodeStripper2/UnusedBytecodeStripper2.exe -out “/Volumes/Code/RwdMovieTexture/Unity/Temp/StagingArea/Data/Managed” -l none -c link -x “/Applications/Unity 5.1.3p1/Unity.app/Contents/Frameworks/Tools/UnusedByteCodeStripper/native_link.xml” -f “/Applications/Unity 5.1.3p1/Unity.app/Contents/Frameworks/il2cpp/LinkerDescriptors” -x “/Volumes/Code/RwdMovieTexture/Unity/Temp/StagingArea/Data/Managed/…/platform_native_link.xml” -x “/Volumes/Code/RwdMovieTexture/Unity/Temp/StagingArea/Data/methods_pointedto_by_uievents.xml” -d “/Volumes/Code/RwdMovieTexture/Unity/Temp/StagingArea/Data/Managed” -a “/Volumes/Code/RwdMovieTexture/Unity/Temp/StagingArea/Data/Managed/Assembly-CSharp-firstpass.dll” -a “/Volumes/Code/RwdMovieTexture/Unity/Temp/StagingArea/Data/Managed/Assembly-CSharp.dll”

stdout:
stderr:

Unhandled Exception:
Nested exception detected.
Original Exception: at (wrapper managed-to-native) object.__icall_wrapper_mono_object_new_fast (intptr) <0x00051>
at UnusedBytecodeStripper2.Program.Main (string[ ]) <0x00013>

Nested exception:at (wrapper managed-to-native) System.MonoType.getFullName (System.MonoType,bool,bool) <0x00060>
at System.MonoType.ToString () <0x00017>
at System.Exception.get_ClassName () <0x0001e>
at System.Exception.ToString () <0x00013>

[ERROR] FATAL UNHANDLED EXCEPTION: Nested exception detected.
Original Exception: at (wrapper managed-to-native) object.__icall_wrapper_mono_object_new_fast (intptr) <0x00051>
at UnusedBytecodeStripper2.Program.Main (string[ ]) <0x00013>

Nested exception:at (wrapper managed-to-native) System.MonoType.getFullName (System.MonoType,bool,bool) <0x00060>
at System.MonoType.ToString () <0x00017>
at System.Exception.get_ClassName () <0x0001e>
at System.Exception.ToString () <0x00013>

UnityEngine.Debug:LogError(Object)
UnityEditorInternal.Runner:RunManagedProgram(String, String, String, CompilerOutputParserBase) (at /Users/builduser/buildslave/unity/build/Editor/Mono/BuildPipeline/Il2Cpp/IL2CPPUtils.cs:66)
UnityEditorInternal.AssemblyStripper:RunAssemblyLinker(IEnumerable1, String&, String&, String, String) (at /Users/builduser/buildslave/unity/build/Editor/Mono/BuildPipeline/Il2Cpp/IL2CPPUtils.cs:192) UnityEditorInternal.AssemblyStripper:StripAssembliesTo(String, String, String&, String&, String, String, IEnumerable1) (at /Users/builduser/buildslave/unity/build/Editor/Mono/BuildPipeline/Il2Cpp/IL2CPPUtils.cs:185)
UnityEditorInternal.AssemblyStripper:Strip(String, String, String&, String&, String, String, IEnumerable1) (at /Users/builduser/buildslave/unity/build/Editor/Mono/BuildPipeline/Il2Cpp/IL2CPPUtils.cs:136) UnityEditorInternal.AssemblyStripper:Strip(String[ ], String[ ], String, String, String&, String&, String, String, IEnumerable1) (at /Users/builduser/buildslave/unity/build/Editor/Mono/BuildPipeline/Il2Cpp/IL2CPPUtils.cs:121)
UnityEditorInternal.IL2CPPBuilder:RunAssemblyStripper(IEnumerable, String, String[ ], String[ ], String) (at /Users/builduser/buildslave/unity/build/Editor/Mono/BuildPipeline/Il2Cpp/IL2CPPUtils.cs:426)
UnityEditorInternal.IL2CPPBuilder:StripAssemblies(IEnumerable1, String) (at /Users/builduser/buildslave/unity/build/Editor/Mono/BuildPipeline/Il2Cpp/IL2CPPUtils.cs:414) UnityEditorInternal.IL2CPPBuilder:Run() (at /Users/builduser/buildslave/unity/build/Editor/Mono/BuildPipeline/Il2Cpp/IL2CPPUtils.cs:291) UnityEditorInternal.IL2CPPUtils:RunIl2Cpp(String, String, IIl2CppPlatformProvider, Action1, RuntimeClassRegistry) (at /Users/builduser/buildslave/unity/build/Editor/Mono/BuildPipeline/Il2Cpp/IL2CPPUtils.cs:211)
UnityEditor.BuildPlayerWindow:BuildPlayerAndRun()

2

@SoylentGraham

This is not something we’ve seen before. Which specific version of OSX are you using (you mentioned El Capitan here: http://forum.unity3d.com/threads/anyone-using-el-capitan-beta-xcode-7b6-unity.351921/)?

3

I THINK it’s beta 4, I may be wrong, in which case it’s 3. (The apple menu doesn’t say which beta)
10.11 (15A225f) on a MacBook Pro (Retina, 15-inch, Early 2013)
The latest beta 5 came out… today or yesterday, it’s not that.

Using latest xcode beta (only option for el capitan)
Version 7.0 beta 4 (7A165t)

As stated, this HAS worked before, but suddenly stopped, and doesn’t seem to have recovered properly since.

4

My mistake, the latest El Capitan in the app store is beta 6… now I’m not sure which version I have at all :slight_smile:

5

@SoylentGraham

I agree that this Apple beta stuff is pretty confusing. For what its worth, I’m using OSX 10.11 Beta (15A263e) (via About This Mac) and Xcode Version 7.0 beta 6 (7A192o). I’ve not seen this before, but if it is intermittent on your machine, I just may not have hit it.

I’m not sure there is much we can do until we gather more data. If you start to see it on a regular basis, please let me know.

6

Do let me know if there’s a build with a ton more verbose debug information :slight_smile:

I’ve installed xcode 7 beta 6, and will upgrade el capitan to beta 6tommorrow and see if there’s any difference.

7

This has come back again, was fine yesterday. Not sure what’s triggering the problem…
Now on El Capitan Gold Master… Just installing a newer Xcode.
Using Unity 5.1.3p1

8

Is this happening on a regular basis now? If so, it might be something we can reproduce and investigate then.

9

It was happening every time before… Then stopped.
Now it’s every time again.
Just installing latest 7.1 xcode beta.
Then trying new Unity.
Then maybe rebooting a few times…
Only seems to occur when I’m trying to meet a deadline :wink:

10

Upgraded to xcode 7.1 beta (the one with watchOS), no change.
Upgraded to Unity 5.1.3p3, problem gone. (though I saw nothing in the release notes about this)
Opened project in 5.1.3p1 again, no problem.
(In each case I tried replacing the build, as well as deleting it and creating from scratch)

Will keep thread updated if it comes back.

11

I installed Unity 5.2 and now have this same error everytime I try compiling. I checked off the byte stripping options in the player and it still happened. I can’t get my project to build for iOS now.

12

@thecodes

Are you using El Capitan and/or Xcode 7 beta? It seems like this issue might have something to do with those, although we’re not certain. Another data point would be beneficial though.

13
  • 1
    OSX 10.5.5 same can’t build IOS
    xCode Version 7.0 (7A220)
    UNITY 5.2…
14

@BBRome

Is it possible for you to submit a bug report with the project that causes this issue? It is not something we’ve been able to reproduce there, so we would like to have look.