.NET Library not working in NativeAot

[GEEKiDoS]

Bug Report

The .NET library is not functioning when compiled with NativeAot, resulting in an exception being thrown.

Steps to Reproduce

1. Compile the code using the PublishAot option.

Observed behavior

An exception is thrown with the following message:

A type initializer threw an exception. To determine which type, inspect the InnerException's StackTrace property.

Environment

• OS version: Windows 10 22H2 (10.0.19045.2728)
• WinFsp version and build: 2023
• dotnet version: 7.0.202

Temporary Solution

The issue stems from the static constructor of Fsp.Interop.Api. To resolve this, perform the following changes:

1. Replace the static constructor with a static Init method and manually call it before executing your code.
2. Modify the GetEntryPoint method in the class as follows:

private static T GetEntryPoint<T>(IntPtr Module)
{
    return Marshal.GetDelegateForFunctionPointer<T>(GetEntryPointPtr(Module, typeof(T).Name));
}

I hope this will help people that using NativeAOT.