R.Net 1.9.0 does not seem to work with .Net 5.0

[UnclAlDeveloper]

I'm looking to upgrade my C# applications to .Net 5.0. One of the breaking points is that R.Net doesn't seem to work with .Net 5.0. I receive the following error when calling REngine.GetInstance():

Unhandled exception at 0x00007FF8C76B0D10 (msvcrt.dll) in TestAndDevelopment2Console.exe: RangeChecks instrumentation code detected an out of range array access.

[fmaillet]

Same problem with .Net 6 : I already developed a C# .Net 4.8 framework Winform program using R.Net (Nuget package 1.9.0 with R 4.1.2 installed) and this one is working fine. Completely rewritten with .Net 6, and program crash with 3221226505 error code (Stack buffer overflow / overrun) when calling REngine.GetInstance().

[rolfans]

Does anyone have a solution for how to make it work with .net 6? Am struggeling to find the problem.

[lrasmus]

I tried to reproduce this but didn't get a crash. I'm wondering if any of you have a code repo you could point me to that is failing that I could test with?

My attempt was a really basic console app, using .NET 6 on Windows 10:

using RDotNet;

REngine.SetEnvironmentVariables();
using (var engine = REngine.GetInstance())
{
    Console.WriteLine(engine.DllVersion);
    var result = engine.Evaluate("a = 10");
    result = engine.Evaluate("a");
    var a = result.AsNumeric();
    Console.WriteLine(a[0]);
}

Produces

4.0.2
10

C:\Users\Luke\source\repos\ConsoleApp2\ConsoleApp2\bin\Debug\net6.0\ConsoleApp2.exe (process 10128) exited with code 0.

[rolfans]

in x64 with built with .net 6: have tried to debug, and it now fails in the CreateInstance() with the following error message: "This 64-bit process failed to load the library R.dll. Native error message is 'The operation completed successfully.'" It looks to be failing inside DynamicInterop 0.9.1
Before I tried to debug it, it crashed at Initialize(): GetFunction<setup_Rmainloop>()();

[fmaillet]

Quite the same thing as Irasmus with a simple console app, using .NET 6 and Windows 10 at first, and now Windows 11 :

`using RDotNet;

Console.WriteLine("Hello, World!");

RDotNet.StartupParameter param = new StartupParameter();
param.Interactive = true; //?
param.Quiet = true; //n'affiche rien sur la console

// by default: string dll = null, bool initialize = true, StartupParameter parameter = null, ICharacterDevice device = null
REngine engine = REngine.GetInstance(null, true, param, null);

// by default: StartupParameter parameter = null, ICharacterDevice device = null, bool setupMainLoop = true
engine.Initialize(param, null, true);

Console.ReadKey();
`

Produces :

The program '[33040] RDotNet_Test6_ConsoleApp.exe' has exited with code 3221226505 (0xc0000409).

Seems that it is the engine.Initialize that fails.

[lrasmus]

@rolfans - thanks for the update, what version of R are you using?
@fmaillet - thank you for the update as well, also curious about R version.

thanks!

[rolfans]

I am using R 4.1.1, and it worked with rdotnet 1.9 on .net 4.8

[fmaillet]

I'm using R 4.1.2.
As Rolfans, all is working fine with R.Net 1.9.0 within a .Net Framework 4.8.
I want to upgrade to WPF .Net 6.0, and this is where R.Net crashes :(

[JD-Robbs]

Not sure if this is related, but I am using .Net 6.0.0, R 4.0.5 and the latest R.Net on Windows 10.

My app (WPF) crashes when it calls REngine.GetInstance() with the following code:

The program '[27784] MYAPP.exe' has exited with code 3221226505 (0xc0000409).

[rolfans]

Think I found the error: https://github.com/rdotnet/dynamic-interop-dll needs to be built for .net 6 as well. Have not made it work yet, but hope that will be fixed fast now.

[rolfans]

Was a bit quick yesterday, that did not work, the problem is: in dynamic-interop: var handle = Win32.LoadLibrary(filename); that will not load the dll, even when the path is hardcoded.

[rolfans]

No one has made rdotnet work with .net 5 or 6? I gave up and hoped someone That knows the library would find the issue.

[tmcintee]

I have verified that, on my machine:

• The sample code above by @Irasmus does not work for .NET 5.0 or .NET 6.0 with R v4.1.2 and Nuget v1.9 or v1.7.
• It does work with .NET 5.0 and .NET 6.0 with R v4.0.2 and Nuget v1.9

Since I can get away with just using whichever version of R I want, I'll be doing that.