Windows exe freezes when pressing Alt+F4 in IL2CPP

I set my project to using: .Net 4.x, IL2CPP, and .NET Standard 2.0. When I make a build and try to quit the game at any point via ALT + F4, the game immediately freezes.

After I added the following code from IssueTracker:

Code (CSharp):

1.         private void OnApplicationQuit()
2.         {
3.             if (!Application.isEditor) {
4.                 System.Diagnostics.Process.GetCurrentProcess().Kill();
5.             }
6.         }

I was able to get the game to crash and generate a crash dump, output log, and error log. When I look at the stack trace, it seems like the game is throwing an exception in Socket.cpp. All the C# sockets that we use haven't been opened or already closed at the point of the crash. Here is the Socket.cpp lines

Code (cpp):

1.  
2.     int32_t Socket::IOControl_internal(intptr_t sock, int32_t ioctl_code, Il2CppArray* input, Il2CppArray* output, int32_t* error)
3.     {
4.         IL2CPP_NOT_IMPLEMENTED_ICALL(Socket::IOControl_internal);
5.         IL2CPP_UNREACHABLE;
6.         return 0;
7.     }

This problem was an issue in 2018.1.3f1, I upgraded to 2018.2.2f1 in hopes of solving the issue. It still seems to be occurring. Anyone else have a workaround or a solution to this problem?

 

@JoshPeterson Thanks for the quick reply!

 

@JoshPeterson Is there a workaround? I'm using 2018.1.0f2 and seeing this same issue.

 

@JoshPeterson We have the same problem with Unity 2018.3.2f1. The game crashes when you hit Alt + F4 or if you call Application.Quit(). All of this works fine if we switch back to Mono. Sadly I can't reproduce the crash in an empty project, but we are not doing any special things (like custom threading) in our project which could cause that.

 

The crash only happens in our project which is to big for bug reporting. I'll try to shrink the project for uploading.

 

The stack trace:

Code (CSharp):

1.  
2. ========== OUTPUTTING STACK TRACE ==================
3.  
4.   ERROR: SymGetSymFromAddr64, GetLastError: 'Attempt to access invalid address.' (Address: 00007FFE19B5E322)
5. 0x00007FFE19B5E322 (UnityPlayer) (function-name not available)
6.   ERROR: SymGetSymFromAddr64, GetLastError: 'Attempt to access invalid address.' (Address: 00007FFE19B911F1)
7. 0x00007FFE19B911F1 (UnityPlayer) (function-name not available)
8.   ERROR: SymGetSymFromAddr64, GetLastError: 'Attempt to access invalid address.' (Address: 00007FFE19B94207)
9. 0x00007FFE19B94207 (UnityPlayer) (function-name not available)
10.   ERROR: SymGetSymFromAddr64, GetLastError: 'Attempt to access invalid address.' (Address: 00007FFE19B94A5E)
11. 0x00007FFE19B94A5E (UnityPlayer) (function-name not available)
12.   ERROR: SymGetSymFromAddr64, GetLastError: 'Attempt to access invalid address.' (Address: 00007FFE19B93CB2)
13. 0x00007FFE19B93CB2 (UnityPlayer) (function-name not available)
14.   ERROR: SymGetSymFromAddr64, GetLastError: 'Attempt to access invalid address.' (Address: 00007FFE19B93F51)
15. 0x00007FFE19B93F51 (UnityPlayer) (function-name not available)
16. 0x00007FFE1AC062B5 (UnityPlayer) UnityMain
17. 0x00007FFE1AC05D84 (UnityPlayer) UnityMain
18. 0x00007FFE1A72A495 (UnityPlayer) UnityMain
19. 0x00007FFE1A7EAF4A (UnityPlayer) UnityMain
20. 0x00007FFE05B5D78B (GameAssembly) [c:\dev\spitlings\temp\stagingarea\data\il2cppoutput\bulk_unityengine.coremodule_0.cpp:32068] Logger_LogException_m362D3434D3B275B0B98E434BFBFBF52C76BBC9C3
21. 0x00007FFE05B593BB (GameAssembly) [c:\dev\spitlings\temp\stagingarea\data\il2cppoutput\bulk_unityengine.coremodule_0.cpp:23997] Debug_LogException_mBAA6702C240E37B2A834AA74E4FDC15A3A5589A9
22. 0x00007FFE05BA4200 (GameAssembly) [c:\dev\spitlings\temp\stagingarea\data\il2cppoutput\bulk_mscorlib_1.cpp:16970] KeyGeneratedEventHandler_Invoke_m169219C2CA206096D4F618C02D7D37E181A08045
23. 0x00007FFE05A1ACDC (GameAssembly) [c:\dev\spitlings\temp\stagingarea\data\il2cppoutput\il2cppinvokertable.cpp:32722] RuntimeInvoker_TrueVoid_t22962CB4C05B1D89B55A6E1139F0E87A90987017_VoidU2A_t3A9D5EB5A83DC9C93DF2C4D6EA67B0F5E885889A_VoidU2A_t3A9D5EB5A83DC9C93DF2C4D6EA67B0F5E885889A
24. 0x00007FFE05976FC2 (GameAssembly) [c:\program files\unity\hub\editor\2018.3.2f1\editor\data\il2cpp\libil2cpp\vm\runtime.cpp:531] il2cpp::vm::Runtime::Invoke
25. 0x00007FFE05975C15 (GameAssembly) [c:\program files\unity\hub\editor\2018.3.2f1\editor\data\il2cpp\libil2cpp\vm\runtime.cpp:773] il2cpp::vm::Runtime::CallUnhandledExceptionDelegate
26. 0x00007FFE05977AC7 (GameAssembly) [c:\program files\unity\hub\editor\2018.3.2f1\editor\data\il2cpp\libil2cpp\vm\runtime.cpp:632] il2cpp::vm::Runtime::UnhandledException
27. 0x00007FFE059991CE (GameAssembly) [c:\program files\unity\hub\editor\2018.3.2f1\editor\data\il2cpp\libil2cpp\icalls\mscorlib\system.threading\thread.cpp:161] il2cpp::icalls::mscorlib::System::Threading::ThreadStart
28. 0x00007FFE059B1F8D (GameAssembly) [c:\program files\unity\hub\editor\2018.3.2f1\editor\data\il2cpp\libil2cpp\os\thread.cpp:171] il2cpp::os::Thread::RunWrapper
29. 0x00007FFE059A7CC3 (GameAssembly) [c:\program files\unity\hub\editor\2018.3.2f1\editor\data\il2cpp\libil2cpp\os\win32\threadimpl.cpp:28] il2cpp::os::ThreadStartWrapper
30. 0x00007FFE66967E94 (KERNEL32) BaseThreadInitThunk
31. 0x00007FFE66B2A251 (ntdll) RtlUserThreadStart
32.  
33. ========== END OF STACKTRACE ===========
34.  
35.  

 

@JoshPeterson We think we found the piece of code which is responsible for the crash, but we are unable to recreate this crash in an empty project with this code. We think it has something to do with some thread and external library calls with pointers from the plugin InControl. When we disable a few options the player doesn't crash.

It's working for us now, but we will submit a bug report when we were able to recreate the bug within an empty project.