System.ArgumentException: Base class UnityEngine.MonoBehaviour is generic and can't be inherited from
spacehamster opened this issue · 2 comments
spacehamster commented
When trying to inherit from MonoBehaviours in Unity v2018.3.7, I get the following exception
[Error : BepInEx] Error loading [Fast Mode] : Base class UnityEngine.MonoBehaviour is generic and can't be inherited from
[Debug : BepInEx] System.ArgumentException: Base class UnityEngine.MonoBehaviour is generic and can't be inherited from
at UnhollowerRuntimeLib.ClassInjector.RegisterTypeInIl2Cpp[T] () [0x000c5] in <78b0a74ed8474311860460a2b2541509>:0
at FastMode.MyMod.Load () [0x00017] in <c635291483104ba6bcd486771a7e2830>:0
at BepInEx.IL2CPP.IL2CPPChainloader.LoadPlugin (BepInEx.PluginInfo pluginInfo, System.Reflection.Assembly pluginAssembly) [0x00019] in <25d17e9887f345fb8db7fda2eb27a374>:0
at BepInEx.Bootstrap.BaseChainloader`1[TPlugin].Execute () [0x00223] in <43cd6c7a3ac44c01acb29606479d8d71>:0
Example code: Main.cs.txt
I believe the issue is caused by incorrect Il2CppClass field alignment, the field naturalAligment does not exist in unity versions 2018.3 or lower, and commenting out the field fixes the issue.
spacehamster commented
I also found another issue with the struct layout.
cctor_thread is a uint64_t in versions less then 2019, but with 2019 and newer, cctor_thread was changed to a size_t, so the field should be sized like this. (ALIGN_TYPE(8) has no effect from what I can tell)
2018 x86: 8 bytes
2018 x64: 8 bytes
2019 x86: 4 bytes
2019 x64: 8 bytes