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Crashes editing basic files

See original GitHub issue

Hi. I’m having a lot of VS crashes editing ZX Basic files.

The first one I can replicate consistently is cutting code. Whenever I cut more than two or three lines VS always crashes with no message. On EventViewer I can see this:

Información de la excepción: System.ArgumentOutOfRangeException
   en Microsoft.VisualStudio.Text.Implementation.BinaryStringRebuilder.GetText(Microsoft.VisualStudio.Text.Span)
   en Microsoft.VisualStudio.Text.Implementation.CachingTextImage.GetText(Microsoft.VisualStudio.Text.Span)
   en Microsoft.VisualStudio.Text.Implementation.BaseSnapshot.GetText(Int32, Int32)
   en Spect.Net.VsPackage.LanguageServices.ZxBasic.ZxBasicParserListener.ExitAsm_section(Asm_sectionContext)
   en Spect.Net.BasicParser.Generated.ZxBasicParser+Asm_sectionContext.ExitRule(Antlr4.Runtime.Tree.IParseTreeListener)
   en Antlr4.Runtime.Tree.ParseTreeWalker.ExitRule(Antlr4.Runtime.Tree.IParseTreeListener, Antlr4.Runtime.Tree.IRuleNode)
   en Antlr4.Runtime.Tree.ParseTreeWalker.Walk(Antlr4.Runtime.Tree.IParseTreeListener, Antlr4.Runtime.Tree.IParseTree)
   en Spect.Net.VsPackage.LanguageServices.ZxBasic.ZxBasicClassifier.<ParseDocument>b__43_1()
   en System.Threading.Tasks.Task.InnerInvoke()
   en System.Threading.Tasks.Task.Execute()
   en System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(System.Threading.Tasks.Task)
   en System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(System.Threading.Tasks.Task)
   en Spect.Net.VsPackage.LanguageServices.ZxBasic.ZxBasicClassifier+<<ParseDocument>g__DoParse|43_0>d.MoveNext()
   en System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(System.Threading.Tasks.Task)
   en System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(System.Threading.Tasks.Task)
   en Spect.Net.VsPackage.LanguageServices.ZxBasic.ZxBasicClassifier+<ParseDocument>d__43.MoveNext()
   en System.Runtime.CompilerServices.AsyncMethodBuilderCore+<>c.<ThrowAsync>b__6_0(System.Object)
   en System.Windows.Threading.ExceptionWrapper.InternalRealCall(System.Delegate, System.Object, Int32)
   en System.Windows.Threading.ExceptionWrapper.TryCatchWhen(System.Object, System.Delegate, System.Object, Int32, System.Delegate)
   en System.Windows.Threading.DispatcherOperation.InvokeImpl()
   en System.Windows.Threading.DispatcherOperation.InvokeInSecurityContext(System.Object)
   en MS.Internal.CulturePreservingExecutionContext.CallbackWrapper(System.Object)
   en System.Threading.ExecutionContext.RunInternal(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
   en System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object, Boolean)
   en System.Threading.ExecutionContext.Run(System.Threading.ExecutionContext, System.Threading.ContextCallback, System.Object)
   en MS.Internal.CulturePreservingExecutionContext.Run(MS.Internal.CulturePreservingExecutionContext, System.Threading.ContextCallback, System.Object)
   en System.Windows.Threading.DispatcherOperation.Invoke()
   en System.Windows.Threading.Dispatcher.ProcessQueue()
   en System.Windows.Threading.Dispatcher.WndProcHook(IntPtr, Int32, IntPtr, IntPtr, Boolean ByRef)
   en MS.Win32.HwndWrapper.WndProc(IntPtr, Int32, IntPtr, IntPtr, Boolean ByRef)
   en MS.Win32.HwndSubclass.DispatcherCallbackOperation(System.Object)
   en System.Windows.Threading.ExceptionWrapper.InternalRealCall(System.Delegate, System.Object, Int32)
   en System.Windows.Threading.ExceptionWrapper.TryCatchWhen(System.Object, System.Delegate, System.Object, Int32, System.Delegate)
   en System.Windows.Threading.Dispatcher.LegacyInvokeImpl(System.Windows.Threading.DispatcherPriority, System.TimeSpan, System.Delegate, System.Object, Int32)
   en MS.Win32.HwndSubclass.SubclassWndProc(IntPtr, Int32, IntPtr, IntPtr)

Also when I delete or paste code some times the same happens, the IDE crashes and I have the exact same error on the event viewer.

I think this error started happening since the last VS update.

Cheers.