System.IndexOutOfRangeException: Index was outside the bounds of the array

[wolverine998]

Hello. I'm trying to run the mono version on my phone, using Termux. Dotnet 8.0 installed also. Cannot make it work, I tried the net6.0 version, another error occurs, the MarshalDirectiveException. I wanna write C# code for my company on my device, some minor changes to team code.

mono OmniSharp.exe
{"Event":"log","Body":{"LogLevel":"INFORMATION","Name":"OmniSharp.St.dio.Host","Message":"Starting OmniSharp on Linux 0.0 (Unknown)"},"Seq":1,"Type":"event"}
{"Event":"log","Body":{"LogLevel":"INFORMATION","Name":"OmniSharp.Services.DotNetCliService","Message":"Checking the 'DOTNET_ROOT' environment variable to find a .NET SDK"},"Seq":2,"Type":"event"}
{"Event":"log","Body":{"LogLevel":"INFORMATION","Name":"OmniSharp.Services.DotNetCliService","Message":"DotNetPath set to /data/data/com.termux/files/usr/lib/dotnet/dotnet"},"Seq":3,"Type":"event"}
System.IndexOutOfRangeException: Index was outside the bounds of the array. at OmniSharp.Utilities.PlatformHelper.GetMonoVersion () [0x0002b] in :0 at OmniSharp.MSBuild.Discovery.Providers.MonoInstanceProvider.GetInstances () [0x0009d] in <4af76a30ecc847bf90ccfd5e2f8323eb>:0 at OmniSharp.MSBuild.Discovery.MSBuildLocator.GetInstances () [0x0001b] in <4af76a30ecc847bf90ccfd5e2f8323eb>:0 at OmniSharp.MSBuild.Discovery.Extensions.GetBestInstance (OmniSharp.MSBuild.Discovery.IMSBuildLocator msbuildLocator, System.Version minimumMSBuildVersion, Microsoft.Extensions.Logging.ILogger logger, System.Boolean& invalidVSFound, System.Boolean& vsWithoutSdkResolver) [0x0000b] in <4af76a30ecc847bf90ccfd5e2f8323eb>:0
at OmniSharp.MSBuild.Discovery.Extensions.RegisterDefaultInstance (OmniSharp.MSBuild.Discovery.IMSBuildLocator msbuildLocator, Microsoft.Extensions.Logging.ILogger logger, OmniSharp.Services.DotNetInfo dotNetInfo) [0x0001e] in <4af76a30ecc847bf90ccfd5e2f8323eb>:0
at OmniSharp.CompositionHostBuilder.Build (System.String workingDirectory) [0x000ad] in <4af76a30ecc847bf90ccfd5e2f8323eb>:0
at OmniSharp.Stdio.Host..ctor (System.IO.TextReader input, OmniSharp.Services.ISharedTextWriter writer, OmniSharp.IOmniSharpEnvironment environment, System.IServiceProvider serviceProvider, OmniSharp.CompositionHostBuilder compositionHostBuilder, Microsoft.Extensions.Logging.ILoggerFactory loggerFactory, System.Threading.CancellationTokenSource cancellationTokenSource) [0x00065] in <4d8ba8d016db479195b4fb2b5ff03f71>:0
at OmniSharp.Stdio.Driver.Program+<>c__DisplayClass0_1.

b__1 () [0x0017d] in <29e1c59102d54c138a063037d2e98dd9>:0
at OmniSharp.CommandLineApplication+<>c__DisplayClass12_0.b__0 () [0x0000b] in <4af76a30ecc847bf90ccfd5e2f8323eb>:0
at McMaster.Extensions.CommandLineUtils.CommandLineApplication+<>c__DisplayClass143_0.b__0 (System.Threading.CancellationToken _) [0x00000] in <21ffa10636d3445095cca7f9fdee08c0>:0
at McMaster.Extensions.CommandLineUtils.CommandLineApplication.ExecuteAsync (System.String[] args, System.Threading.CancellationToken cancellationToken) [0x000ba] in <21ffa10636d3445095cca7f9fdee08c0>:0
at McMaster.Extensions.CommandLineUtils.CommandLineApplication.Execute (System.String[] args) [0x00016] in <21ffa10636d3445095cca7f9fdee08c0>:0
at OmniSharp.CommandLineApplication.Execute (System.String[] args) [0x00081] in <4af76a30ecc847bf90ccfd5e2f8323eb>:0
at OmniSharp.Stdio.Driver.Program+<>c__DisplayClass0_0.b__0 () [0x00028] in <29e1c59102d54c138a063037d2e98dd9>:0
at OmniSharp.HostHelpers.Start (System.Func`1[TResult] action) [0x0001c] in <4af76a30ecc847bf90ccfd5e2f8323eb>:0

[rene-descartes2021]

mono in Termux logs to logcat not stdout. So mono --version prints nothing in Termux, this I expect results in the exception you and I observed.

This is the design of mono when running on Android, mono devs then wrote they would not otherwise see the output. logcat log buffer is not able to be redirected to stdout; I believe mono has to be patched to output to stdout, so that it respects the environmental variable MONO_LOG_DEST. Currently ignored at compile time when HOST_ANDROID. This could either be feature request in upstream Mono, or more likely done downstream in termux-packages. To me it didn't look too difficult to patch mono-logger.c for mono in termux-packages. That's what I came up with when I encountered the issue you reported.

There is a PR open #2653 which adds a linux-bionic-arm64 release. You could try building that and moving it onto your phone to try, though you might run into the MarshalDirectiveException I wrote of in #2671 (I built locally in Termux).

[wolverine998]

Yeah you are right. I know that problem is about mono not spitting the version. I also did build it locally on my s24 and tried running it, and I got the MarshalDirectiveException. Seems there is no way to run this server on Termux yet, until something changes. I tried countless ways to make it work, but it seems I would have to surrender trying it lol.

[rene-descartes2021]

I managed to get OmniSharp working on Termux with a patch in #2671. Feel free to try- I have not configured emacs to use it yet, hope there are no problems.

[wolverine998]

Well I tried building omnisharp, cannot get it to build, error NuGet TLS not supported on platform. What is it with these errors.

[rene-descartes2021]

The feature/net8.0 branch should build on Termux, no TLS problems, that's what my patch was based off of.

[rene-descartes2021]

Oh, you'll probably need to bump a version in Directory.Packages.props to:
<MSBuildPackageVersion>17.8.29</MSBuildPackageVersion>

Following the error on restore you'd figure that out but I thought to write it.

[wolverine998]

I built.it, but got some last Cake error, it says Cake error: Executable not found, after build task finished.

[rene-descartes2021]

Oh right forgot about that one.. I think it is the following. Need to patch build.cake, the ToolPath needs change:
https://gist.github.com/rene-descartes2021/f28fbddcc5a0e57838a33bc8baed0846

Only the uncommented tool path line needs to be changed. Other stuff is my experiments, they don't matter.

A problem with cake on Termux is my guess.

[wolverine998]

Now I got some massive error, something strange. MSBuild error: 6003, so many of these same errors. This is outrageous, so hard to build this damn server haha. I surrender, man, it simply won't build, or run.

[rene-descartes2021]

Oh, well thanks for sharing. It's a nice language server, others don't meet my needs so I put the effort in to get it working.

[wolverine998]

Okay. I managed to build it successfuly. But when running it like this, dotnet OmniSharp.dll i get again the MarshalDirectiveException. I applied your MSBuildLocator patch. I didn't applied the bionic RID patch tho, it produces linux-arm64 version, i guess it uses libc. Maybe that is the problem? If you need log i can provide it.

[rene-descartes2021]

Yep that's probably it. It just patches platform.cake IIRC. You can try to search for .so or other executable files in the outputs and run ldd on them. When it is compiled for linux-bionic-arm64 it should print something like:

$  ldd OmniSharp
        libdl.so => /system/lib64/libdl.so
        libm.so => /system/lib64/libm.so
        libc.so => /system/lib64/libc.so
        ld-android.so => /system/lib64/ld-android.so

If it's compiled for glibc it will print a bunch of "not found"s. I guess that was the cause of the msbuild 6003 errors- maybe when it attempted to run tests.

I'd make a PR once that Cake on Termux error is fixed.

[wolverine998]

Using --languageserver option, it can run. I wanna enable this server in Neovim, using lspconfig. Let me test it inside Neovim. This version that I run before is the Http one, and it doesnt work on termux, it uses some Microsoft paths that don't expand to Linux style i guess or who knows.

[wolverine998]

Well, neovim cannot initialize it, even with --languageserver option. Same error, MarshalDirectiveException. Here is the error.

OmniSharp -v
{"Event":"log","Body":{"LogLevel":"DEBUG","Name":"OmniSharp.CompositionHostBuilder","Message":"Loaded OmniSharp.Cake, Version=0.0.1.0, Culture=neutral, PublicKeyToken=7e5bf7b3b470b509"},"Seq":1,"Type":"event"}
{"Event":"log","Body":{"LogLevel":"DEBUG","Name":"OmniSharp.CompositionHostBuilder","Message":"Loaded OmniSharp.DotNetTest, Version=0.0.1.0, Culture=neutral, PublicKeyToken=7e5bf7b3b470b509"},"Seq":2,"Type":"event"}
{"Event":"log","Body":{"LogLevel":"DEBUG","Name":"OmniSharp.CompositionHostBuilder","Message":"Loaded OmniSharp.Host, Version=0.0.1.0, Culture=neutral, PublicKeyToken=7e5bf7b3b470b509"},"Seq":3,"Type":"event"}
{"Event":"log","Body":{"LogLevel":"DEBUG","Name":"OmniSharp.CompositionHostBuilder","Message":"Loaded OmniSharp.MSBuild, Version=0.0.1.0, Culture=neutral, PublicKeyToken=7e5bf7b3b470b509"},"Seq":4,"Type":"event"}
{"Event":"log","Body":{"LogLevel":"DEBUG","Name":"OmniSharp.CompositionHostBuilder","Message":"Loaded OmniSharp.Roslyn, Version=0.0.1.0, Culture=neutral, PublicKeyToken=7e5bf7b3b470b509"},"Seq":5,"Type":"event"}
{"Event":"log","Body":{"LogLevel":"DEBUG","Name":"OmniSharp.CompositionHostBuilder","Message":"Loaded OmniSharp.Roslyn.CSharp, Version=0.0.1.0, Culture=neutral, PublicKeyToken=7e5bf7b3b470b509"},"Seq":6,"Type":"event"}
{"Event":"log","Body":{"LogLevel":"DEBUG","Name":"OmniSharp.CompositionHostBuilder","Message":"Loaded OmniSharp.Script, Version=0.0.1.0, Culture=neutral, PublicKeyToken=7e5bf7b3b470b509"},"Seq":7,"Type":"event"}
{"Event":"log","Body":{"LogLevel":"DEBUG","Name":"OmniSharp.CompositionHostBuilder","Message":"Loaded OmniSharp.Shared, Version=0.0.1.0, Culture=neutral, PublicKeyToken=7e5bf7b3b470b509"},"Seq":8,"Type":"event"}
{"Event":"log","Body":{"LogLevel":"INFORMATION","Name":"OmniSharp.Stdio.Host","Message":"Starting OmniSharp on Unknown 0.0 (Unknown)"},"Seq":9,"Type":"event"}
{"Event":"log","Body":{"LogLevel":"INFORMATION","Name":"OmniSharp.Services.DotNetCliService","Message":"Checking the 'DOTNET_ROOT' environment variable to find a .NET SDK"},"Seq":10,"Type":"event"}
{"Event":"log","Body":{"LogLevel":"INFORMATION","Name":"OmniSharp.Services.DotNetCliService","Message":"DotNetPath set to /data/data/com.termux/files/usr/lib/dotnet/dotnet"},"Seq":11,"Type":"event"}
{"Event":"log","Body":{"LogLevel":"DEBUG","Name":"OmniSharp.CompositionHostBuilder","Message":".NET SDK requires MSBuild instances version 17.7.0 or higher"},"Seq":12,"Type":"event"}
System.Runtime.InteropServices.MarshalDirectiveException: Array size control parameter must be an integral type.
at Microsoft.Build.Locator.DotNetSdkLocationHelper.GetAllAvailableSDKs()
at Microsoft.Build.Locator.DotNetSdkLocationHelper.GetDotNetBasePaths(String workingDirectory)+MoveNext()
at Microsoft.Build.Locator.DotNetSdkLocationHelper.GetInstances(String workingDirectory)+MoveNext()
at Microsoft.Build.Locator.MSBuildLocator.GetInstances(VisualStudioInstanceQueryOptions options)+MoveNext()
at System.Linq.Enumerable.WhereEnumerableIterator1[[Microsoft.Build.Locator.VisualStudioInstance, Microsoft.Build.Locator, Version=1.0.0.0, Culture=neutral, PublicKeyToken=9dff12846e04bfbd]].ToArray() at System.Linq.Buffer1[[Microsoft.Build.Locator.VisualStudioInstance, Microsoft.Build.Locator, Version=1.0.0.0, Culture=neutral, PublicKeyToken=9dff12846e04bfbd]]..ctor(IEnumerable1 source) at System.Linq.OrderedEnumerable1[[Microsoft.Build.Locator.VisualStudioInstance, Microsoft.Build.Locator, Version=1.0.0.0, Culture=neutral, PublicKeyToken=9dff12846e04bfbd]].ToArray()
at System.Linq.Enumerable.ToArray[VisualStudioInstance](IEnumerable1 source) at System.Collections.Immutable.ImmutableArray.CreateRange[VisualStudioInstance](IEnumerable1 items)
at System.Collections.Immutable.ImmutableArray.ToImmutableArray[VisualStudioInstance](IEnumerable1 items) at OmniSharp.MSBuild.Discovery.Providers.SdkInstanceProvider.GetInstances() in /data/data/com.termux/files/home/omnisharp-roslyn/src/OmniSharp.Host/MSBuild/Discovery/Providers/SdkInstanceProvider.cs:line 33 at OmniSharp.MSBuild.Discovery.MSBuildLocator.GetInstances() in /data/data/com.termux/files/home/omnisharp-roslyn/src/OmniSharp.Host/MSBuild/Discovery/MSBuildLocator.cs:line 113 at OmniSharp.MSBuild.Discovery.Extensions.GetBestInstance(IMSBuildLocator msbuildLocator, Version minimumMSBuildVersion, ILogger logger) in /data/data/com.termux/files/home/omnisharp-roslyn/src/OmniSharp.Host/MSBuild/Discovery/Extensions.cs:line 57 at OmniSharp.MSBuild.Discovery.Extensions.RegisterDefaultInstance(IMSBuildLocator msbuildLocator, ILogger logger, DotNetInfo dotNetInfo) in /data/data/com.termux/files/home/omnisharp-roslyn/src/OmniSharp.Host/MSBuild/Discovery/Extensions.cs:line 17 at OmniSharp.CompositionHostBuilder.Build(String workingDirectory) in /data/data/com.termux/files/home/omnisharp-roslyn/src/OmniSharp.Host/CompositionHostBuilder.cs:line 68 at OmniSharp.Stdio.Host..ctor(TextReader input, ISharedTextWriter writer, IOmniSharpEnvironment environment, IServiceProvider serviceProvider, CompositionHostBuilder compositionHostBuilder, ILoggerFactory loggerFactory, CancellationTokenSource cancellationTokenSource) in /data/data/com.termux/files/home/omnisharp-roslyn/src/OmniSharp.Stdio/Host.cs:line 49 at OmniSharp.Stdio.Driver.Program.<>c__DisplayClass0_1.<Main>b__1() in /data/data/com.termux/files/home/omnisharp-roslyn/src/OmniSharp.Stdio.Driver/Program.cs:line 74 at OmniSharp.CommandLineApplication.<>c__DisplayClass12_0.<OnExecute>b__0() in /data/data/com.termux/files/home/omnisharp-roslyn/src/OmniSharp.Host/CommandLineApplication.cs:line 92 at McMaster.Extensions.CommandLineUtils.CommandLineApplication.<>c__DisplayClass143_0.<OnExecute>b__0(CancellationToken _) at McMaster.Extensions.CommandLineUtils.CommandLineApplication.ExecuteAsync(String[] args, CancellationToken cancellationToken) at McMaster.Extensions.CommandLineUtils.CommandLineApplication.Execute(String[] args) at OmniSharp.CommandLineApplication.Execute(String[] args) in /data/data/com.termux/files/home/omnisharp-roslyn/src/OmniSharp.Host/CommandLineApplication.cs:line 65 at OmniSharp.Stdio.Driver.Program.<>c__DisplayClass0_0.<Main>b__0() in /data/data/com.termux/files/home/omnisharp-roslyn/src/OmniSharp.Stdio.Driver/Program.cs:line 84 at OmniSharp.HostHelpers.Start(Func1 action) in /data/data/com.termux/files/home/omnisharp-roslyn/src/OmniSharp.Host/HostHelpers.cs:line 15

[rene-descartes2021]

Here is my log:
https://gist.github.com/rene-descartes2021/995a68af253391eb5b9bab3a030eadda

In your omnisharp.json is sdk.path set to the full... Sdk path? Should have a suffix like sdk/8.0.115/. Example here.

I'll try to get mine working in emacs... Been putting it off.