Hi devvvvs,
This happened to me the other day when I was refactoring a patch with Ctrl+G, it took me a while to find the error.
On a fresh patch the Console Output pops up (find the error at the end of the post), but it seems once I close the Console, it doesn’t pop up again if reproduce the same error later on (this is what I observed when documenting this just now).
Just tested in 7 stable again to make sure the bug is still around.
Step 1
The overall setup
Step 2
Let’s refactor what you see on the right with Ctrl+G.
Patch stops running, no error reported on any node.
Here’s the error printed to the console, which I didn’t see the first time I ran into this error, maybe because I also previously closed the Console window back then like described above.
EmitException: "C:\Users\jhnnslmk\Documents\vvvv\gamma\Sketches\callmenames-2025-09-11.vl.1.283.cs(122,39): error CS1061: 'callmenames2_P' does not contain a definition for 'SomeOperation' and no accessible extension method 'SomeOperation' accepting a first argument of type 'callmenames2_P' could be found (are you missing a using directive or an assembly reference?)"
StackTrace:
VL.Lang.Platforms.Roslyn.TargetCompilation+<>c__DisplayClass6_3 { internal System.ValueTuple<Microsoft.CodeAnalysis.PortableExecutableReference, VL.Core.RawAssembly> <InitializeAsync>g__Emit|5(bool includeSource, System.Threading.CancellationToken token, VL.Lang.Platforms.Roslyn.<>c__DisplayClass6_2& ) { ... } }
VL.Lang.Platforms.Roslyn.TargetCompilation+<>c__DisplayClass6_0 { internal VL.Lang.Platforms.Roslyn.ProjectCompilation <InitializeAsync>g__Build|0(VL.Lang.Platforms.Roslyn.ProjectBuildRequest projectBuildRequest) { ... } }
VL.Lang.Platforms.Roslyn.TargetCompilation+<>c__DisplayClass6_1+<<InitializeAsync>b__1>d { private virtual void MoveNext() { ... } }
System.Runtime.ExceptionServices.ExceptionDispatchInfo { public void Throw() { ... } }
System.Runtime.CompilerServices.TaskAwaiter { private static void ThrowForNonSuccess(System.Threading.Tasks.Task task) { ... } }
System.Runtime.CompilerServices.TaskAwaiter { private static void HandleNonSuccessAndDebuggerNotification(System.Threading.Tasks.Task task, System.Threading.Tasks.ConfigureAwaitOptions options) { ... } }
VL.Lang.Platforms.Roslyn.TargetCompilation+<InitializeAsync>d__6 { private virtual void MoveNext() { ... } }
System.Runtime.ExceptionServices.ExceptionDispatchInfo { public void Throw() { ... } }
System.Runtime.CompilerServices.TaskAwaiter { private static void ThrowForNonSuccess(System.Threading.Tasks.Task task) { ... } }
System.Runtime.CompilerServices.TaskAwaiter { private static void HandleNonSuccessAndDebuggerNotification(System.Threading.Tasks.Task task, System.Threading.Tasks.ConfigureAwaitOptions options) { ... } }
VL.Lang.Platforms.Roslyn.TargetCompilation+<CreateAsync>d__4 { private virtual void MoveNext() { ... } }
System.Runtime.ExceptionServices.ExceptionDispatchInfo { public void Throw() { ... } }
System.Runtime.CompilerServices.TaskAwaiter { private static void ThrowForNonSuccess(System.Threading.Tasks.Task task) { ... } }
System.Runtime.CompilerServices.TaskAwaiter { private static void HandleNonSuccessAndDebuggerNotification(System.Threading.Tasks.Task task, System.Threading.Tasks.ConfigureAwaitOptions options) { ... } }
VL.Lang.Platforms.Roslyn.TargetCompilation+<WithCompilationAsync>d__43 { private virtual void MoveNext() { ... } }
System.Runtime.ExceptionServices.ExceptionDispatchInfo { public void Throw() { ... } }
System.Runtime.CompilerServices.TaskAwaiter { private static void ThrowForNonSuccess(System.Threading.Tasks.Task task) { ... } }
System.Runtime.CompilerServices.TaskAwaiter { private static void HandleNonSuccessAndDebuggerNotification(System.Threading.Tasks.Task task, System.Threading.Tasks.ConfigureAwaitOptions options) { ... } }
VL.Lang.Platforms.Roslyn.TargetCompilation+<VL-Lang-Symbols-ITargetCompilation-WithCompilationAsync>d__44 { private virtual void MoveNext() { ... } }
System.Runtime.ExceptionServices.ExceptionDispatchInfo { public void Throw() { ... } }
System.Runtime.CompilerServices.TaskAwaiter { private static void ThrowForNonSuccess(System.Threading.Tasks.Task task) { ... } }
System.Runtime.CompilerServices.TaskAwaiter { private static void HandleNonSuccessAndDebuggerNotification(System.Threading.Tasks.Task task, System.Threading.Tasks.ConfigureAwaitOptions options) { ... } }
VL.Model.VLSession+<CreateTargetCompilationAsync>d__149 { private virtual void MoveNext() { ... } }
System.Runtime.ExceptionServices.ExceptionDispatchInfo { public void Throw() { ... } }
System.Runtime.CompilerServices.TaskAwaiter { private static void ThrowForNonSuccess(System.Threading.Tasks.Task task) { ... } }
System.Runtime.CompilerServices.TaskAwaiter { private static void HandleNonSuccessAndDebuggerNotification(System.Threading.Tasks.Task task, System.Threading.Tasks.ConfigureAwaitOptions options) { ... } }
VL.Model.VLSession+<UpdateRuntimesAsync>d__148 { private virtual void MoveNext() { ... } }
System.Runtime.ExceptionServices.ExceptionDispatchInfo { public void Throw() { ... } }
System.Runtime.CompilerServices.TaskAwaiter { private static void ThrowForNonSuccess(System.Threading.Tasks.Task task) { ... } }
System.Runtime.CompilerServices.TaskAwaiter { private static void HandleNonSuccessAndDebuggerNotification(System.Threading.Tasks.Task task, System.Threading.Tasks.ConfigureAwaitOptions options) { ... } }
VL.Model.VLSession+<UpdateCompilationAsync>d__172 { private virtual void MoveNext() { ... } }