AndroidStripILAfterAOT likely causing "InvalidProgramException: Invalid IL code in ..."

[tipa]

Android application type

.NET Android (net7.0-android, net8.0-android, etc.)

Affected platform version

NET 8.0.100

Description

After adding the AndroidStripILAfterAOT=true property to my apps, I started seeing crashes (reported in AppCenter) from my apps in production, e.g.

System.InvalidProgramException: Invalid IL code in System.Drawing.Color:FromArgb (int,int,int,int): method body is empty. 

ColorConverters.FromHex(String hex)
MyApp.Project.get_ColorObject()
MyApp.Project.get_ColorStruct()
MyApp.TimerControlWidget.BuildRemoteViews(Context context, Bundle options)
MyApp.TimerControlWidget.OnUpdate(Context context, AppWidgetManager appWidgetManager, Int32[] appWidgetIds)
Android.Appwidget.AppWidgetProvider.n_OnUpdate_Landroid_content_Context_Landroid_appwidget_AppWidgetManager_arrayI(IntPtr jnienv, IntPtr native__this, IntPtr native_context, IntPtr native_appWidgetManager, IntPtr native_appWidgetIds)
Android.Runtime.JNINativeWrapper.Wrap_JniMarshal_PPLLL_V(_JniMarshal_PPLLL_V callback, IntPtr jnienv, IntPtr klazz, IntPtr p0, IntPtr p1, IntPtr p2)

One on of the three crash reports of that app states "Crashed after: 1s", indicating that the app was just cold-booted before crashing.

In another app:

System.InvalidProgramException: Invalid IL code in SQLite.SQLiteConnection:.cctor (): method body is empty.

MyApp.DatabaseHelper.GetConnection()
MyApp.DatabaseHelper.get_Db()
MyApp.DatabaseHelper.GetEntry(DateTime date)
MyApp.StackRemoteViewsFactory.GetViewAt(Int32 position)
Android.Widget.RemoteViewsService.IRemoteViewsFactoryInvoker.n_GetViewAt_I(IntPtr jnienv, IntPtr native__this, Int32 position)
Android.Runtime.JNINativeWrapper.Wrap_JniMarshal_PPI_L(_JniMarshal_PPI_L callback, IntPtr jnienv, IntPtr klazz, Int32 p0)

All 4/4 crash reports I got for that app state "Crashed after: 0s".

All seven crash reports were sent from (different) Samsung devices.
All seven crash reports originated from the apps widgets.

Steps to Reproduce

My .csproj look something like this:

  <PropertyGroup Condition="'$(Configuration)' == 'Release'">
    <AndroidUseDefaultAotProfile>False</AndroidUseDefaultAotProfile>
    <AndroidEnableProfiledAot>True</AndroidEnableProfiledAot>
    <AndroidStripILAfterAOT>True</AndroidStripILAfterAOT>
    <AndroidLinkTool>r8</AndroidLinkTool>
    <TrimMode>full</TrimMode>
  </PropertyGroup>
  <ItemGroup>
    <AndroidAotProfile Include="custom.aprof" />
  </ItemGroup>

Did you find any workaround?

No response

Relevant log output

No response

[jonathanpeppers]

@tipa are you able to share the .apk file for this one? It would be useful for us to inspect the IL & AOT images inside.

[tipa]

Sure - I shared the file with you in a private message

[jonathanpeppers]

What is odd the app has the method it is complaining about:

This is inside System.Drawing.Primitives.dll.

I tried something like this so far, which seems to work:

• https://github.com/jonathanpeppers/AndroidStripILAfterAOT/blob/main/ColorExample/MainActivity.cs#L16

[jonathanpeppers]

Ok, @tipa sent me another .apk and it does thave this method stripped, as expected:

But I think the behavior is:

• The app works when @tipa tests it locally
• @tipa has some crash reports on the Google Play console
• A [BroadcastReceiver] may be involved

So, it makes me wonder if the crash occurs if the app is launched in a special way (broadcast).

[charlesroddie]

We are getting this issue:

Invalid IL code in Polly.PolicyBuilder:.ctor (Polly.ExceptionPredicate): method body is empty.
Invalid IL code in System.Net.Http.Headers.MediaTypeHeaderValue:.ctor (string): method body is empty.

@FoggyFinder @kevcrooks to see if we can give an apk

[tipa]

So, it makes me wonder if the crash occurs if the app is launched in a special way (broadcast).

For me, it more and more feels like this is broadcast-related. I now also see some crash reports that originate from another BroadcastReceiver, which is implemented as follows:

[BroadcastReceiver(Exported = false)]
[IntentFilter(new[] { Intent.ActionBootCompleted, "android.intent.action.QUICKBOOT_POWERON" })]
sealed class BootReceiver : BroadcastReceiver
{
    public override async void OnReceive(Context context, Intent intent)
    {
         // do stuff
    }
}

ColorConverters.FromHex(String hex)
...
MyApp.Helper.SetupNotifications()
MyApp.BootReceiver.OnReceive(Context context, Intent intent)
System.Threading.Tasks.Task.<>c.<ThrowAsync>b__128_0(Object state)
Android.App.SyncContext.<>c__DisplayClass2_0.<Post>b__0()
Java.Lang.Thread.RunnableImplementor.Run()
Java.Lang.IRunnableInvoker.n_Run(IntPtr jnienv, IntPtr native__this)
Android.Runtime.JNINativeWrapper.Wrap_JniMarshal_PP_V(_JniMarshal_PP_V callback, IntPtr jnienv, IntPtr klazz)

And because the crashes don't happen repeatedly for the same users, it could be some race condition

[grendello]

Long ago there was an issue with isolated broadcast receivers IIRC. The issue was that even though the app was running in the background, the receiver ran in a separate process which didn't have the XA+mono runtime properly initialized and, thus, everything burned and crashed. It doesn't appear to be the case here, but I wonder if it might be a race condition as suggested by @tipa, where the broadcast is received before the main app is fully initialized (e.g. during our very first call to the managed land, the static method JNIEnv.Initialize).

[charlesroddie]

We are getting this issue:

Invalid IL code in Polly.PolicyBuilder:.ctor (Polly.ExceptionPredicate): method body is empty.
Invalid IL code in System.Net.Http.Headers.MediaTypeHeaderValue:.ctor (string): method body is empty.

@jonathanpeppers can we send you an aab file for this and where should we send it to?

[jonathanpeppers]

@tipa's problem doesn't occur every time, and we think it is a race condition related to a broadcast receiver.

@charlesroddie if you see this issue 100% (as if it crashes every time), can you file a new issue here?

• https://github.com/dotnet/runtime/issues

The IL strip code lives here:

• https://github.com/dotnet/runtime/blob/main/src/tasks/MonoTargetsTasks/ILStrip/ILStrip.cs

[charlesroddie]

The error doesn't occur every time and we only encountered it via an appcenter report. Ours does not involve a BroadcastReceiver, but our app can be launched directly or more rarely via an app link. Generally the bug seems v similar to this one. Assuming it is the same sort of thing going on as above, I would expect our aab file not to have the method in IL, that it will have the method in AOT code, and that something stops it accessing the latter, but I haven't investigated the aab file to confirm any of this.