added a test

Author: VSadov

src/tests/Regressions/coreclr/GitHub_115667/test115667.cs

@@ -0,0 +1,57 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+using System;
+using Xunit;
+using System.Threading.Tasks;
+
+public interface I0
+{
+    Task<bool> M8();
+}
+
+public struct S1 : I0
+{
+#pragma warning disable CS1998 // Async method lacks 'await' operators and will run synchronously
+    public async Task<bool> M8()
+#pragma warning restore CS1998 // Async method lacks 'await' operators and will run synchronously
+    {
+        return false;
+    }
+}
+
+public class Program
+{
+    [Fact]
+    public static int TestEntryPoint()
+    {
+        System.Runtime.Loader.AssemblyLoadContext alc = new CollectibleALC();
+        System.Reflection.Assembly asm = alc.LoadFromAssemblyPath(System.Reflection.Assembly.GetExecutingAssembly().Location);
+        System.Reflection.MethodInfo mi = asm.GetType(typeof(Program).FullName).GetMethod(nameof(MainInner));
+        System.Type runtimeTy = asm.GetType(typeof(Runtime).FullName);
+        mi.Invoke(null, new object[] { System.Activator.CreateInstance(runtimeTy) });
+
+        return 100;
+    }
+
+    public static void MainInner(IRuntime rt)
+    {
+        bool vr1 = new S1().M8().GetAwaiter().GetResult();
+    }
+}
+
+public interface IRuntime
+{
+    void WriteLine<T>(string site, T value);
+}
+
+public class Runtime : IRuntime
+{
+    public void WriteLine<T>(string site, T value) => System.Console.WriteLine(value);
+}
+
+public class CollectibleALC : System.Runtime.Loader.AssemblyLoadContext
+{
+    public CollectibleALC() : base(true)
+    {
+    }
+}

src/tests/Regressions/coreclr/GitHub_115667/test115667.csproj

@@ -0,0 +1,11 @@
+<Project Sdk="Microsoft.NET.Sdk">
+  <PropertyGroup>
+    <CLRTestPriority>1</CLRTestPriority>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="test115667.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <ProjectReference Include="$(TestSourceDir)Common/CoreCLRTestLibrary/CoreCLRTestLibrary.csproj" />
+  </ItemGroup>
+</Project>