Deadlock on application exit when an error occurs in case of asynchronous Program.main()

Author: NikolayPianikov

.github/workflows/main.yml

@@ -1,10 +1,11 @@
-name: CSharpInteractive check
+name: CSharpInteractive build
 
 on: [ push, pull_request ]
 
 jobs:
-  build:  
-    
+
+  ubuntu_build:
+
     runs-on: ubuntu-latest
 
     steps:
@@ -32,3 +33,63 @@ jobs:
 
       - name: Build
         run: dotnet run --project ./Build
+
+  mac_build:
+
+    runs-on: macos-latest
+    
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Setup .NET 6
+        uses: actions/setup-dotnet@v3
+        with:
+          dotnet-version: '6.0.x'
+
+      - name: Setup .NET 7
+        uses: actions/setup-dotnet@v3
+        with:
+          dotnet-version: '7.0.x'
+
+      - name: Setup .NET 8
+        uses: actions/setup-dotnet@v3
+        with:
+          dotnet-version: '8.0.x'
+
+      - name: Setup .NET 9
+        uses: actions/setup-dotnet@v3
+        with:
+          dotnet-version: '9.0.x'
+
+      - name: Build
+        run: dotnet run --project ./Build
+        
+    windows_build:
+
+      runs-on: windows-latest
+
+      steps:
+        - uses: actions/checkout@v4
+
+        - name: Setup .NET 6
+          uses: actions/setup-dotnet@v3
+          with:
+            dotnet-version: '6.0.x'
+
+        - name: Setup .NET 7
+          uses: actions/setup-dotnet@v3
+          with:
+            dotnet-version: '7.0.x'
+
+        - name: Setup .NET 8
+          uses: actions/setup-dotnet@v3
+          with:
+            dotnet-version: '8.0.x'
+
+        - name: Setup .NET 9
+          uses: actions/setup-dotnet@v3
+          with:
+            dotnet-version: '9.0.x'
+
+        - name: Build
+          run: dotnet run --project ./Build

CSharpInteractive/Core/Environment.cs

@@ -86,14 +86,6 @@ public void Exit(int exitCode)
             return;
         }
 
-        WindowsNativeExit(exitCode);
-        var exitThread = new Thread(() => System.Environment.Exit(exitCode));
-        exitThread.Start();
-        if (exitThread.Join(100))
-        {
-            return;
-        }
-
         NativeExit(exitCode);
     }