Bug (Case 1329969, 1311658, 1315723) Il2CPP build launch straight crash for DOTS project

Hi @JoshPeterson, @joncham. Can you take a look at these two bugs and get the right person to fix the bug? Those two bugs I already stuck for months from last year until this year before I report the bugs. Before that I thought the bugs will be fixed at some time but until now still haven fix yet. I believe the bugs caused by Il2CPP failed to convert correct C++ code and make it access invalid address then cause the game crash. My DOTS project needs to able to roll out working IL2CPP Android build at next month before end of May. And also there is announcement that DOTS Entities package will lock at 2020.3 LTS until the end of the year at the earliest (https://forum.unity.com/threads/notice-on-dots-compatibility-with-unity-2021-1.1091800/). So, the fix needs to backport to 2020.3 LTS as my project has Entities package dependency.

1) Possibly Entities package or burst package related crash bug
(Case 1329969) [IL2CPP][Entities] Android build crash
(Case 1315723) [IL2CPP][Physics][Netcode][Entities] Android build crash
(Case 1311658) [Netcode][IL2CPP] Player build crash or not working properly
https://issuetracker.unity3d.com/is...on-null-pointer-dereference-when-launching-it
https://issuetracker.unity3d.com/is...ilds-crash-with-entities-and-netcode-packages
https://issuetracker.unity3d.com/is...rashes-when-running-x86-build-on-a-x64-system


2) Possibly Physics related crash bug
(Case 1315723) [IL2CPP][Physics][Netcode][Entities] Android build crash
https://issuetracker.unity3d.com/is...-crashes-on-signal-11-sigsegv-upon-app-launch

 

Kindly reproduce it with Case 1315723 GameProject.zip project with IL2CPP Android Release build. The Case 1311658 lightweight GameplayServerTest.zip project seems like sometimes will fail to reproduce the bug.

 

@JoshPeterson. Can I know the current state for this case?

 

Hi @JoshPeterson. I just submitted another new bug report (Case 1329969) [IL2CPP][Entities] Android build crash. Hopefully it can help further speed up the bug reproduction speed.

 

Hi @Lee_Hammerton. Still crash at latest Burst 1.5.2. From issue tracker, it says Fix In Review for 1.5.1 seems like the fix still haven roll out to any public Burst version yet. Can u verify it?

I also added logcat without build configuration that I roll out android build without going through build configuration since dots build configuration doesn't support symbol.zip.

 

Hi @sheredom. Is that possible for u to verify this issue too?

 

Hi @Lee_Hammerton. I found that it's not crash at Develop build but crash at Release build.

 

Hi @JoshPeterson. I didn't get any further update for quite some time. Did the relevant people still look at my bug report? Seems like it's Entities 0.17 package bug or Burst package bug.

 

Hi. Our team facing same bug. I can attach sample project with bug reproducible, if needed.


Sample project have only Entities package with required dependencies and blank scene loading on application start.

Android IL2CPP application crashes on start. Unity versions 2020.3.0.f1, 2020.3.10.f1, 2020.3.11.f1 with Entities package 0.17.0-preview.41 or 0.17.0-preview.42 (no crashes with Entities 0.16.0-preview.21)
application built with debug instead of release is stable

ios built on macOS Catalina crashes too if built with release option - debug works fine. build with Entities downgraded to 0.16.0-preview.21 is stable

@JoshPeterson is there any update for this issue?

 

A month ago there was no news, but maybe now there is some information about this bug?

Seems a bit strange that the feature announced so loudly now just crashes android builds, and there are no updates from Unity side

Thanks

 

It's still crashing with Burst 1.5.4!

 

It's still crashing with Burst 1.5.5! Experiencing crashes after the Unity logo with a simple scene that instantiates DOTS entities when I press a button.

 

@Lee_Hammerton

This bug is reproducible on Unity 2020 LTS + Burst 1.5.2 - 1.5.5
Maybe it should be reopened?

https://issuetracker.unity3d.com/is...92.1431120914.1604680124-350356135.1604680124

 

Yes, you are right, the problem persists even when Burst is disabled in the AOT settings file.

I tried to report a new bug but it became closed with the following comment:

"Hi,

Thanks for getting in touch, we actually know about this issue. Unfortunately, we cannot provide an Issue Tracker link, as this bug is only tracked internally."

@Lee_Hammerton maybe you can suggest someone I can write to about this crash?

The unknown is frightening.

We need someone to share information about bug status, estimates, and other comforting things.

 

Got it, thanks

 

It is not crashing with Mono. When I tried to run app with IL2CPP, it crashed.
com.unity.entities version is "0.17.0-preview.42"

 

I can confirm entities 1.6 builds with il2cpp but 1.7 doesn't. However 1.6 bugs out the pause button in the editor. Maybe it's worth?