Class::Init signatures have been exhausted, using il2cpp_class_has_references as a substitute!

What happened?

使用Unity2021.2.8f1构建IL2CPP后，运行游戏，程序会崩溃，接着BepInEx报错：Class::Init signatures have been exhausted, using il2cpp_class_has_references as a substitute! 但是换成Mono的方式或者2019.4.33版本后，就正常了。 希望可以支持高版本的UnityIL2CPP

Steps to reproduce

使用Unity2021.2.8f1构建IL2CPP

BepInEx Distribution

Bleeding Edge from BepisBuilds

Log outputs

[Message: Preloader] BepInEx 6.0.0-be.571 - BepInExProject21
[Message: Preloader] BLEEDING EDGE Build #571 from 3a54f7eef841493e9c715606576b94f2326c4cc1 at master
[Info   :   BepInEx] System platform: Windows 10 64-bit
[Info   :   BepInEx] Process bitness: 64-bit (x64)
[Info   : Preloader] Running under Unity v2022.1.0
[Message: Preloader] Downloading unity base libraries
[Message: Preloader] Extracting downloaded unity base libraries
[Message: Preloader] Generating Il2CppUnhollower assemblies
[Info   :    Cpp2IL] [Library] Initializing Metadata...
[Info   :    Cpp2IL] [Library] Using actual IL2CPP Metadata version 29
[Info   :    Cpp2IL] [Library] Initialized Metadata in 208ms
[Info   :    Cpp2IL] [Library] Searching Binary for Required Data...
[Info   :    Cpp2IL] [Library] Got Binary codereg: 0x1804773B0, metareg: 0x1804B6770 in 61ms.
[Info   :    Cpp2IL] [Library] Initializing Binary...
[Info   :    Cpp2IL] [Library] Initialized Binary in 100ms
[Info   :    Cpp2IL] [Library] Mapping pointers to Il2CppMethodDefinitions...
[Info   :    Cpp2IL] [Library] Processed 11768 OK (19ms)
[Info   :    Cpp2IL] [Program] Building assemblies...This may take some time.
[Info   :    Cpp2IL] [Program] Finished Building Assemblies in 288ms
[Info   :    Cpp2IL] [Program] Fixing up explicit overrides. Any warnings you see here aren't errors - they usually indicate improperly stripped or obfuscated types, but this is not a big deal. This should only take a second...
[Info   :    Cpp2IL] [Program] Fixup complete (16ms)
[Info   :    Cpp2IL] Total time: 00:00:00.7589421
[Info   : Preloader] Executing Il2CppUnhollower generator
[Info   :Unhollower] Reading assemblies...
[Info   :Unhollower] Done in 00:00:00.0021516
[Info   :Unhollower] Reading system assemblies...
[Info   :Unhollower] Done in 00:00:00.0313837
[Info   :Unhollower] Reading unity assemblies...
[Info   :Unhollower] Done in 00:00:00.0232298
[Info   :Unhollower] Creating rewrite assemblies...
[Info   :Unhollower] Done in 00:00:00.0045627
[Info   :Unhollower] Computing renames...
[Info   :Unhollower] Done in 00:00:00.0115650
[Info   :Unhollower] Creating typedefs...
[Info   :Unhollower] Done in 00:00:00.0128244
[Info   :Unhollower] Computing struct blittability...
[Info   :Unhollower] Done in 00:00:00.0011864
[Info   :Unhollower] Filling typedefs...
[Info   :Unhollower] Done in 00:00:00.0027367
[Info   :Unhollower] Filling generic constraints...
[Info   :Unhollower] Done in 00:00:00.0004660
[Info   :Unhollower] Creating members...
[Info   :Unhollower] Done in 00:00:00.0449194
[Info   :Unhollower] Scanning method cross-references...
[Info   :Unhollower] Done in 00:00:00.0983452
[Info   :Unhollower] Finalizing method declarations...
[Info   :Unhollower] Done in 00:00:00.0845024
[Info   :Unhollower] 0 total potentially dead methods
[Info   :Unhollower] Filling method parameters...
[Info   :Unhollower] Done in 00:00:00.0287318
[Info   :Unhollower] Creating static constructors...
[Info   :Unhollower] Done in 00:00:00.0351750
[Info   :Unhollower] Creating value type fields...
[Info   :Unhollower] Done in 00:00:00.0153617
[Info   :Unhollower] Creating enums...
[Info   :Unhollower] Done in 00:00:00.0052228
[Info   :Unhollower] Creating IntPtr constructors...
[Info   :Unhollower] Done in 00:00:00.0017260
[Info   :Unhollower] Creating type getters...
[Info   :Unhollower] Done in 00:00:00.0081866
[Info   :Unhollower] Creating non-blittable struct constructors...
[Info   :Unhollower] Done in 00:00:00.0014150
[Info   :Unhollower] Creating generic method static constructors...
[Info   :Unhollower] Done in 00:00:00.0024604
[Info   :Unhollower] Creating field accessors...
[Info   :Unhollower] Done in 00:00:00.0760948
[Info   :Unhollower] Filling methods...
[Info   :Unhollower] Done in 00:00:00.1630626
[Info   :Unhollower] Generating implicit conversions...
[Info   :Unhollower] Done in 00:00:00.0040960
[Info   :Unhollower] Creating properties...
[Info   :Unhollower] Done in 00:00:00.0083772
[Info   :Unhollower] Unstripping types...
[Info   :Unhollower] Done in 00:00:00.0380745
[Info   :Unhollower] Unstripping fields...
[Info   :Unhollower] 
[Info   :Unhollower] 1050 fields restored
[Info   :Unhollower] 23 fields failed to restore
[Info   :Unhollower] Done in 00:00:00.0142061
[Info   :Unhollower] Unstripping methods...
[Info   :Unhollower] 
[Info   :Unhollower] 21994 methods restored
[Info   :Unhollower] 1861 methods failed to restore
[Info   :Unhollower] Done in 00:00:00.5844871
[Info   :Unhollower] Unstripping method bodies...
[Info   :Unhollower] 
[Info   :Unhollower] IL unstrip statistics: 9884 successful, 5031 failed
[Info   :Unhollower] Done in 00:00:00.4823956
[Info   :Unhollower] Generating forwarded types...
[Info   :Unhollower] Done in 00:00:00.0065508
[Info   :Unhollower] Writing xref cache...
[Info   :Unhollower] Done in 00:00:00.0342756
[Info   :Unhollower] Writing assemblies...
[Info   :Unhollower] Done in 00:00:00.3648146
[Info   :Unhollower] Writing method pointer map...
[Info   :Unhollower] Done in 00:00:00.0070829
[Info   :Unhollower] Done!
[Info   : Preloader] 0 patcher plugins loaded
[Info   : Preloader] 0 assemblies discovered
[Message:AssemblyPatcher] Executing 0 patch(es)
[Message:   BepInEx] Chainloader initialized
[Warning:Unhollower] Class::Init signatures have been exhausted, using il2cpp_class_has_references as a substitute!

Environment

- OS: Windows10
- BepInEx: BepInEx_UnityIL2CPP_x64_3a54f7e_6.0.0-be.571
- Game: 自研游戏

Greetings!

Thanks for all the reports. Since we've been getting the same reports on Discord and other GH issues, I've consolidated all reports into a single ticket:

https://github.com/BepInEx/BepInEx/issues/474

You can find more information about the issue and a temporary workaround there. As such, I'm closing this issue to favour one central place for the problem discussion.