Question I can't debug IL2CPP build with Rider

This works fine if I compile the build in Mono, but when using IL2CPP, Rider doesn't hit any breakpoints. I have checked the build as Development Build and Script Debugging. Any idea what I might be missing or doing wrong?

Thanks

 

Windows. And it works perfectly fine if I compile in Mono. That's why I thought I might be missing something.

 

I guess it attaches since I start the standalone build from Rider itself. But the breakpoints don't load. It says it doesn't find the associated module.

 

I haven't created any assembly definition for my code, so it must be using the default

 

The message appears when I hold the mouse over the breakpoint. Here you have a full screenshot

 

I double checked, and it is in the Assembly-CSharp assembly

 

I retried this on a new empty project with only one script and got the same result. The debug on the Mono build works perfectly, but the IL2CPP gives the same error

 

Let me know and I'll test whatever is necessary. i guess It must be something on my side either Rider or OS

 

Are you using Rider 2021.2?

 

Yes, that's correct

 

That screenshot looks a little weird. Tooltip showing an unresolved breakpoint while also saying "Process Chain Reaction.exe terminated with exit code 0". Could you please try running the Player from terminal or from Unity and attach debugger via Run | Attach to Unity process?

 

Debugging using the editor or Mono build has always worked fine. Now using the method of Run | Attach to Unity process, seems to work fine with the IL2CPP build as well. The problem only seems to appear if I use the top-right menu to select Standalone Player on the "Select Run/Debug Configuration", edit the configuration to give it the path of my Player, and click de Debug button. This is a screenshot using that method on an IL2CPP build of an empty project if it is of any use to you.

 

Thank you! After your explanation, I was to reproduce the issue.
The cause is that when we supply environment variable MONO_ARGUMENTS and it works only for mono backend and is ignored for IL2CPP backend. I will contact Unity team to find a solution.

 

Thanks a lot for your help

 

Is there an update on the issue ?

I have the same setup than @Caparrini (Rider 2021.2) and cannot break on IL2CPP players (same error than him on the breakpoint).

No issue with Mono players.

 

If you have the same problem with il2cpp backend in standalone player - just use "Run | Attach to Unity" for now.
But there is another issue under investigation related to IL2CPP https://youtrack.jetbrains.com/issue/RIDER-70101, if it fits your case - comment there to get updates.

 

Hello @van800 , I am still having the issue with Rider 2021.3.2.

I am unable to debug builds made in IL2CPP with Rider, while there is no issue at all breaking with Visual Studio 2019.
I am currently testing this on Windows IL2CPP builds made with Unity 2021.2.5f1.
To attach Rider, I use "Run | Attach to Unity process..." then select the player corresponding to my running build :



This is the error I'm getting on a basic project :



This is the Scripting Backend configuration of the repro project :



Rider breaks without issue when the player is built with Mono :



I'd be happy to test different configurations and send logs/repro projects if needed

Should I create a new issue on Youtrack, or bump the following one ?
https://youtrack.jetbrains.com/issue/RIDER-70101

 

Answer from Jetbrains support : the issue is known and still under investigation.

"Upvote [the issue] in order to bring increased awareness"
https://youtrack.jetbrains.com/issue/RIDER-70101

 

same problem here

Has been anybody able to debug debug with rider and Unity 2021 ? Here I just tried with the latest Rider version and detected the breakpoint but after that, I could not either resume or step over next instruction...this worked perfectly on Unity 2020.3

I wrote a comment for them to reopen the issue:
https://youtrack.jetbrains.com/issue/RIDER-70101

 

I second you that. I also can't debug with Rider & Unity 2021 versions. I am on a M1 machine by the way. Both Unity & Rider are Apple Silicon versions.

 

The issues to upvote and follow :
https://youtrack.jetbrains.com/issue/RIDER-70101
https://youtrack.jetbrains.com/issue/RIDER-66147
https://youtrack.jetbrains.com/issue/RIDER-77515/Cannot-debug-aspnet-core-application-M1

 

(also this for Switch : https://youtrack.jetbrains.com/issue/RIDER-76841/Cannot-attach-to-Nintendo-Switch-built-player)

 

@van800 when I attach rider to the iPhone it stops at the first breakpoint, when I press resume, application frozes,
is this a known error ?

Im using Unity 2021.3.10 on a Mac Sillicon M1

 

Same Here, Mac Silicon M1 and Rider 2022.2.4

 

https://youtrack.jetbrains.com/issu...aks-and-game-freezes-for-IL2CPP-on-iOS-device

Although I doubt its a Rider problem, i installed VS just to test and it doesnt work either.
Problems starting with debugging IL2CPP on MAC on Unity 2021.