TypeLoadException when struct contains nullable static field of itself

[gurksaft]

Description

If a struct contains a static field that is of the same type as itself and also nullable then referencing the type during runtime will result in a TypeLoadException with no explanation to why it fails to load the type.

Reproduction Steps

Program.cs

System.Console.WriteLine(typeof(TestStruct1));

TestStruct1.cs

public struct TestStruct1
{
	public static TestStruct1? Instance;
}

ConsoleApp1.csproj

<Project Sdk="Microsoft.NET.Sdk">
  <PropertyGroup>
    <OutputType>Exe</OutputType>
    <TargetFramework>net7.0</TargetFramework>
  </PropertyGroup>
</Project>

Expected behavior

Remarking the field TestStruct1.Instance results in the expected behavior which is that the name of the struct "TestStruct1" is rendered to console. Removing the Nullable-part or changing to another struct (as Nullable) of the field type works as intended.

Actual behavior

TypeLoadException when the type is referenced in runtime. Changing from typeof(TestStruct1) to new TestStruct1() in Program.cs makes no difference.

Regression?

No response

Known Workarounds

Write code that does not use this pattern at all; struct with static nullable field of itself.

Configuration

Tested with:

• .NET 6 and 7
• Windows 10 and 11
• Visual Studio 2022 17.4.3 and 14.7.0
• Intel x64 CPU
• Published Release build and debug

Other information

No response

[DaZombieKiller]

This is a duplicate of #6924.