IL2CPP Player crashes on Delegate.CreateDelegate() with specific parameter combinations Unity 2021.3

Unity Engine
,
1

Hi,

I am experiencing reproducible crashes when using Delegate.CreateDelegate() in IL2CPP builds in Unity 2021.3f5 LTS. I already filed a bug report (IN-3846), but did not get any response within a month. This is why I try my luck at the forums. Maybe, there is someone knowing a fix or potential workaround.

What happened
The built project crashes during the execution of method “Delegate.CreateDelegate”

How to reproduce

Environment:

  • 2021.3.5f1 LTS, Windows
  • Empty Unity 3D project, no specific packages installed
  • Scripting Backend IL2CPP
  • Default Visual Studio 2019 installation from UnityHub

Steps:

  • Add “Test.cs” to any GameObject in an empty scene
using UnityEngine;
using System.Linq;
using System.Reflection;
using System.Linq.Expressions;
using System;

public class Test : MonoBehaviour {
    void Start() {
        MethodInfo[] methodInfos = typeof(Test).GetMethods(BindingFlags.Public | BindingFlags.Static);
        foreach (MethodInfo methodInfo in methodInfos) {
            if (methodInfo.Name.StartsWith("Test")) {
                Func<Type[], Type> getType = Expression.GetActionType;
                var types = methodInfo.GetParameters().Select(p => p.ParameterType);
                Delegate.CreateDelegate(getType(types.ToArray()), methodInfo);
            }
        }
    }

    public static void Test1_Ok(string s1) { }
    public static void Test2_Ok(bool b1) { }
    public static void Test3_Ok(string s1, bool b1) { }
    public static void Test4_Crash(bool b1, string s1) { }
    public static void Test5_Ok(int i1, string s1) { }
    public static void Test6_Crash(int i1, bool b1) { }
}
  • Build the project and run

The player crashes after showing the splash screen.

Notes:

  • The issue does not appear on Mono runtime

  • The issue does not appear on IL2CPP Code Generation: Faster (smaller) Builds

  • The issue does not appear on Unity 2020.3.34f1 LTS or Unity 2022.1.2

  • The attached Test.cs contains different “Test*”-methods that have different parameters. Depending on the set of parameters, CreateDelegate works or crashes the player.

  • The Player.log can be found in the attachment

8248518–1079211–Player.log.txt (37.5 KB)

2

Anyone?

I think, those topics also relate to the same issue:
https://github.com/YarnSpinnerTool/YarnSpinner-Unity/issues/163#issuecomment-1153148324
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