runtime: Starting App on iOS fails with System.ExecutingEngineException

From @jhimes144 on Sun, 08 Jan 2023 04:51:56 GMT

This is an issue I have raised over in Avalonia here https://github.com/AvaloniaUI/Avalonia/issues/9934 To the best of our knowledge, the below method GetStringNative should not have any problem with AOT, and everything works fine on Android with AOT enabled. So far I’ve reproduced this on two separate code bases.

Steps to Reproduce

1. Create a new dotnet solution using the Avalonia xplat template. See https://github.com/AvaloniaUI/avalonia-dotnet-templates
2. Insert needed CodesignKey in project file for the ios project
3. Build and run the ios project on a physical ios device

Expected Behavior

The app runs

Actual Behavior

The following exception is raised on app startup

System.ExecutionEngineException: Attempting to JIT compile method '(wrapper managed-to-native) intptr Avalonia.OpenGL.GlBasicInfoInterface:wrapper_native_indirect_0x283931e40 (intptr&,int)' while running in aot-only mode. See https://docs.microsoft.com/xamarin/ios/internals/limitations for more information.

  at Avalonia.OpenGL.GlBasicInfoInterface.GetStringNative(Int32 v) in /_/src/Avalonia.OpenGL/DevGenerators/Generator.GetProcAddressInitializationGenerator/globalAvalonia.OpenGL.GlBasicInfoInterface.cs:13
  at Avalonia.OpenGL.GlBasicInfoInterface.GetString(Int32 v) in /_/src/Avalonia.OpenGL/GlBasicInfoInterface.cs:27
  at Avalonia.OpenGL.GlBasicInfoInterface.GetExtensions() in /_/src/Avalonia.OpenGL/GlBasicInfoInterface.cs:43
  at Avalonia.OpenGL.GlInterface.GlContextInfo.Create(GlVersion version, Func`2 getProcAddress) in /_/src/Avalonia.OpenGL/GlInterface.cs:33
  at Avalonia.OpenGL.GlInterface..ctor(GlVersion version, Func`2 getProcAddress) in /_/src/Avalonia.OpenGL/GlInterface.cs:48
  at Avalonia.iOS.GlContext..ctor() in /_/src/iOS/Avalonia.iOS/EaglDisplay.cs:30
  at Avalonia.iOS.EaglFeature..ctor() in /_/src/iOS/Avalonia.iOS/EaglDisplay.cs:17
  at Avalonia.iOS.Platform.Register() in /_/src/iOS/Avalonia.iOS/Platform.cs:34
  at at Avalonia.Controls.AppBuilderBase`1[[Avalonia.AppBuilder, Avalonia.Controls, Version=11.0.0.0, Culture=neutral, PublicKeyToken=c8d484a7012f9a8b]].Setup()
  at at Avalonia.Controls.AppBuilderBase`1[[Avalonia.AppBuilder, Avalonia.Controls, Version=11.0.0.0, Culture=neutral, PublicKeyToken=c8d484a7012f9a8b]].SetupWithLifetime(IApplicationLifetime lifetime)
  at at Avalonia.iOS.AvaloniaAppDelegate`1[[testapp.App, testapp, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]].FinishedLaunching(UIApplication application, NSDictionary launchOptions)

I have tried adding <ResolveAssemblyConflicts>true</ResolveAssemblyConflicts>, different linker settings, and downgrading the project to .net 6. All attempts failed with same error.

Environment

Visual Studio Community 2022 for Mac
Version 17.4.2 (build 17)
Installation UUID: 04eb36b5-8ade-4881-9f2c-f51e231033e1

Runtime
.NET 6.0.12 (64-bit)
Architecture: X64

Roslyn (Language Service)
4.4.0-6.22578.12+3c6ab8e1715e5b080fb7bb77070810ab71e09387

NuGet
Version: 6.3.1.1

.NET SDK (x64)
SDK: /usr/local/share/dotnet/sdk/7.0.101/Sdks
SDK Versions:
	7.0.101
	6.0.404
MSBuild SDKs: /Applications/Visual Studio.app/Contents/MonoBundle/MSBuild/Current/bin/Sdks

.NET Runtime (x64)
Runtime: /usr/local/share/dotnet/dotnet
Runtime Versions:
	7.0.1
	6.0.12

Xamarin.Profiler
Version: 1.8.0.19
Location: /Applications/Xamarin Profiler.app/Contents/MacOS/Xamarin Profiler

Updater
Version: 11

Xamarin.Android
Version: 13.1.0.1 (Visual Studio Community)
Commit: xamarin-android/d17-4/13ba222
Android SDK: /Users/jhimes/Library/Developer/Xamarin/android-sdk-macosx
	Supported Android versions:
		13.0 (API level 33)

SDK Command-line Tools Version: 7.0
SDK Platform Tools Version: 33.0.2
SDK Build Tools Version: 32.0.0

Build Information: 
Mono: a96bde9
Java.Interop: xamarin/java.interop/d17-4@fcc33ce2
SQLite: xamarin/sqlite/3.39.3@23e1ae7
Xamarin.Android Tools: xamarin/xamarin-android-tools/main@0be567a

Microsoft Build of OpenJDK
Java SDK: /Library/Java/JavaVirtualMachines/microsoft-11.jdk
11.0.12
Android Designer EPL code available here:
https://github.com/xamarin/AndroidDesigner.EPL

Eclipse Temurin JDK
Java SDK: /Library/Java/JavaVirtualMachines/temurin-8.jdk
1.8.0.302
Android Designer EPL code available here:
https://github.com/xamarin/AndroidDesigner.EPL

Android SDK Manager
Version: 17.4.0.54
Hash: 6eabb9e
Branch: remotes/origin/d17-4
Build date: 2022-12-13 04:22:32 UTC

Android Device Manager
Version: 0.0.0.1206
Hash: 886af39
Branch: 886af39
Build date: 2022-12-13 04:22:32 UTC

Apple Developer Tools
Xcode 14.2 (21534)
Build 14C18

Xamarin.Mac
Version: 9.0.0.27 (Visual Studio Community)
Hash: 933c6c2c9
Branch: xcode14.1
Build date: 2022-11-22 02:00:36-0500

Xamarin.iOS
Version: 16.1.1.27 (Visual Studio Community)
Hash: 933c6c2c9
Branch: xcode14.1
Build date: 2022-11-22 02:00:37-0500

Xamarin Designer
Version: 17.4.0.136
Hash: d49c9ff6d3
Branch: remotes/origin/d17-4
Build date: 2022-12-13 04:22:27 UTC

Build Information
Release ID: 1704020017
Git revision: 7ef5413f2eec3351ce648085f619fc29fd8cb647
Build date: 2022-12-13 04:20:10+00
Build branch: release-17.4
Build lane: release-17.4

Operating System
Mac OS X 12.6.1
Darwin 21.6.0 Darwin Kernel Version 21.6.0
    Thu Sep 29 20:12:57 PDT 2022
    root:xnu-8020.240.7~1/RELEASE_X86_64 x86_64

Copied from original issue xamarin/xamarin-macios#17159