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.Templates/content/ConsoleApplication-CSharp/.template.config/template.json

@@ -35,7 +35,7 @@
       "type": "parameter",
       "datatype": "string",
       "description": "Version of CSharpInteractive that will be referenced.",
-      "defaultValue": "$(version)",
+      "defaultValue": "1.1.6",
       "replaces": "$(CSharpInteractiveVersion)"
     },
     "skipRestore": {

CSharpInteractive/Core/Environment.cs

@@ -86,13 +86,12 @@ public void Exit(int exitCode)
             return;
         }
 
-        WindowsNativeExit(exitCode);
-        var exitThread = new Thread(() => System.Environment.Exit(exitCode));
+        /*var exitThread = new Thread(() => System.Environment.Exit(exitCode));
         exitThread.Start();
         if (exitThread.Join(100))
         {
             return;
-        }
+        }*/
 
         NativeExit(exitCode);
     }
@@ -173,7 +172,7 @@ private string GetScriptDirectory()
     [DllImport("libSystem.dylib", EntryPoint = "exit")]
     private static extern void MacNativeExit(int exitCode);
 
-    [DllImport("libc.so", EntryPoint = "exit")]
+    [DllImport("libc.so.6", EntryPoint = "exit")]
     private static extern void LinuxNativeExit(int exitCode);
 
     private static void NativeExit(int exitCode)
@@ -192,7 +191,15 @@ private static void NativeExit(int exitCode)
                     break;
 
                 case PlatformID.Unix:
-                    LinuxNativeExit(exitCode);
+                    try
+                    {
+                        LinuxNativeExit(exitCode);
+                    }
+                    catch (DllNotFoundException)
+                    {
+                        MacNativeExit(exitCode);
+                    }
+
                     break;
 
                 case PlatformID.MacOSX:

TestBuild/TestBuild.csproj

@@ -5,6 +5,7 @@
         <TargetFramework>net9.0</TargetFramework>
         <ImplicitUsings>enable</ImplicitUsings>
         <Nullable>enable</Nullable>
+        <IsPackable>false</IsPackable>
         <TargetsForTfmSpecificBuildOutput>$(TargetsForTfmSpecificBuildOutput);CopyProjectReferencesToPackage</TargetsForTfmSpecificBuildOutput>
     </PropertyGroup>