MediaType.GetHashCode() throws System.ExecutionEngineException

[austindrenski]

MediaType.GetHashCode() throws a System.ExecutionEngineException in an ASP.NET Core application.

I've included a minimal project that consistently reproduces the exception on my local machine.

Does anyone have an idea of what's behind this?

Program.cs:

using System;
using Microsoft.AspNetCore;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Mvc.Formatters;

namespace test
{
    public static class Program
    {
        public static void Main(string[] args)
        {
            MediaType t = new MediaType("text/csv");

            // throws => System.ExecutionEngineException
            Console.WriteLine(t.GetHashCode());

            WebHost.CreateDefaultBuilder(args)
                   .Build()
                   .Run();
        }
    }
}

test.csproj

<Project Sdk="Microsoft.NET.Sdk.Web">

  <PropertyGroup>
    <OutputType>Exe</OutputType>
    <TargetFramework>netcoreapp2.0</TargetFramework>
    <LangVersion>latest</LangVersion>
  </PropertyGroup>

  <ItemGroup>
    <PackageReference Include="Microsoft.AspNetCore.All" Version="2.0.5" />
  </ItemGroup>

</Project>

[mkArtakMSFT]

Thanks for reporting this issue.
@dougbu, can you please look into this?

[jkotas]

This was CoreCLR bug. It was fixed for 2.1 as side-effect of dotnet/coreclr#16550.

[dougbu]

Thanks @jkotas !

@austindrenski because this is a closed issue in the Core CLR, I'm marking this as external and closing it. You may want to watch dotnet/coreclr#16545 to see if it is reopened or otherwise added to a 2.0.x patch release.

[jkotas]

This issue was moved to dotnet/coreclr#17661

[austindrenski]

Very much appreciated, thanks!