Примеры ошибок, обнаруженных с помощью диагностики V3080

V3080. Possible null dereference.

Barotrauma

V3080 Possible null dereference. Consider inspecting 'value'. MetadataModels.cs 132

public void RecreateSprites()
{
  ....
  if (_deformSprite != null)
  {
    _deformSprite.Remove();

    var source = _deformSprite.Sprite.SourceElement;

    _deformSprite = new DeformableSprite(source, ....);
  }
  ....
  for (int i = 0; i < DecorativeSprites.Count; i++)
  {
    var decorativeSprite = DecorativeSprites[i];

    decorativeSprite.Remove();

    var source = decorativeSprite.Sprite.SourceElement;        // <=

    DecorativeSprites[i] = new DecorativeSprite(source, ....);
  }
}

Stride

V3080 Possible null dereference. Consider inspecting 'value'. MetadataModels.cs 132

public Palette GlobalPalette
{
  get {....}
  set
  {
    SetTagValue("GlobalPalette", (value != null) ? null : value.Data);
  }
}

Stride

V3080 Possible null dereference. Consider inspecting 'PreviewService'. PreviewViewModel.cs 109

private IAssetPreviewService PreviewService
{
  get
  {
    if (previewService != null)
      return previewService;

    previewService = ServiceProvider.TryGet<IAssetPreviewService>();
    if (previewService == null)
      return null;

    previewService.PreviewAssetUpdated += PreviewAssetUpdated;
      return previewService;
  }
}

....

private void SetIsVisible(bool isVisible)
{
  if (isVisible)
    PreviewService.OnShowPreview();
  else
    PreviewService.OnHidePreview();
}

Accord.Net

V3080 Possible null dereference. Consider inspecting 'fmt'. Accord.Statistics MultivariateMixture'1.cs 697

public override string ToString(string format,
                                IFormatProvider formatProvider)
{
  ....
  var fmt = components[i] as IFormattable;
  if (fmt != null)
    sb.AppendFormat(fmt.ToString(format, formatProvider));
  else
    sb.AppendFormat(fmt.ToString());
  ....
}

Old NASA World Wind (C#)

V3080 Possible null dereference. Consider inspecting 'm_gpsIcon'. GpsTrackerPlugin.SourceSetup.cs 68

public GpsSetup(....)
{
  ....
  if (m_gpsIcon!=null)
  {
    ....
    labelTitle.Text = "Set options for " +
                      m_gpsIcon.m_RenderInfo.sDescription;
  }
  else
  if (m_gpsTrackLine != null)
  {
    ....
    labelTitle.Text = "Set options for " +
                      m_gpsIcon.m_RenderInfo.sDescription; // <=
  }
  ....
}

Unity3D

V3080 Possible null dereference. Consider inspecting 't.staticFieldBytes'. MemoryProfiller CrawledDataUnpacker.cs 20

public static CrawledMemorySnapshot Unpack(....)
{
  ....
  var result = new CrawledMemorySnapshot
  {
    ....
    staticFields = packedSnapshot.typeDescriptions
      .Where(t =>
        t.staticFieldBytes != null & // <=
        t.staticFieldBytes.Length > 0)
      .Select(t => UnpackStaticFields(t))
      .ToArray(),
    ....
  };
  ....
}

PowerShell

V3080 Possible null dereference. Consider inspecting 'ItemSelectionCondition'. System.Management.Automation displayDescriptionData_List.cs 352

internal bool SafeForExport()
{
  return DisplayEntry.SafeForExport() &&
         ItemSelectionCondition == null
      || ItemSelectionCondition.SafeForExport();
}

Similar errors can be found in some other places:

• V3080 Possible null dereference. Consider inspecting 'EntrySelectedBy'. System.Management.Automation displayDescriptionData_Wide.cs 247

PowerShell

V3080 Possible null dereference. Consider inspecting 'providerName'. System.Management.Automation SessionStateProviderAPIs.cs 1004

internal Collection<ProviderInfo> GetProvider(
  PSSnapinQualifiedName providerName)
{
  ....
  if (providerName == null)
  {
    ProviderNotFoundException e =
      new ProviderNotFoundException(
          providerName.ToString(),
          SessionStateCategory.CmdletProvider,
          "ProviderNotFound",
          SessionStateStrings.ProviderNotFound);

    throw e;
  }
  ....
}

Similar errors can be found in some other places:

• V3080 Possible null dereference. Consider inspecting 'job'. System.Management.Automation PowerShellETWTracer.cs 1088

Umbraco

V3080 Possible null dereference. Consider inspecting 'context.Request'. StateHelper.cs 369

public static bool HasCookies
{
  get
  {
    var context = HttpContext;
    return context != null && context.Request != null &
           context.Request.Cookies != null &&
           context.Response != null &&
           context.Response.Cookies != null;
  }
}

Media Portal 2

V3080 Possible null dereference. Consider inspecting 'BannerPath'. TvdbBannerWithThumb.cs 91

public bool LoadThumb(bool replaceOld)
{
  ....
  if (ThumbPath == null &&
     (BannerPath != null || BannerPath.Equals(""))) // <=
  {
    ThumbPath = String.Concat("_cache/", BannerPath);
  }
  ....
}

.NET Core Libraries (CoreFX)

V3080 Possible null dereference. Consider inspecting 'tabClasses'. PropertyTabAttribute.cs 225

private void InitializeArrays(string[] tabClassNames,
  Type[] tabClasses, PropertyTabScope[] tabScopes)
{
  if (tabClasses != null)
  {
    if (tabScopes != null &&
        tabClasses.Length != tabScopes.Length)
    {
      ....
    }
    _tabClasses = (Type[])tabClasses.Clone();
  }
  else if (tabClassNames != null)
  {
    if (tabScopes != null &&
        tabClasses.Length != tabScopes.Length) // <=
    {
      ....
    }
    _tabClassNames = (string[])tabClassNames.Clone();
    _tabClasses = null;
  }

  ....
}

Used 'tabClasses' instead of 'tabClassNames'.

Similar errors can be found in some other places:

• V3080 Possible null dereference. Consider inspecting 'BaseSimpleType'. SimpleType.cs 368

PascalABC.NET

V3080 Possible null dereference. Consider inspecting 'tc'. CodeCompletion CodeCompletionPCUReader.cs 736

private TypeScope GetTemplateInstance()
{
  TypeScope tc = null;//GetTemplateClassReference();
  int params_count = br.ReadInt32();
  for (int i = 0; i < params_count; i++)
  {
    tc.AddGenericInstanciation(GetTypeReference());  // <=
  }
  return tc;
}

Similar errors can be found in some other places:

• V3080 Possible null dereference. Consider inspecting 'bfc'. TreeConverter syntax_tree_visitor.cs 7334
• V3080 Possible null dereference. Consider inspecting 'bfc'. TreeConverter syntax_tree_visitor.cs 7336
• V3080 Possible null dereference. Consider inspecting 'bfc'. TreeConverter syntax_tree_visitor.cs 7338
• And 5 additional diagnostic messages.

Unity C# reference source code

V3080 CWE-476 Possible null dereference. Consider inspecting 'm_Parent'. EditorWindow.cs 449

public void ShowPopup()
{
  if (m_Parent == null)
  {
    ....
    Rect r = m_Parent.borderSize.Add(....);
    ....
  }
}

Unity C# reference source code

V3080 CWE-476 Possible null dereference. Consider inspecting 'm_Parent'. EditorWindow.cs 470

internal void ShowWithMode(ShowMode mode)
{
  if (m_Parent == null)
  {
    ....
    Rect r = m_Parent.borderSize.Add(....);
    ....
}

Unity C# reference source code

V3080 CWE-476 Possible null dereference. Consider inspecting 'objects'. TypeSelectionList.cs 48

public TypeSelection(string typeName, Object[] objects)
{
  System.Diagnostics.Debug.Assert(objects != null ||
                                  objects.Length >= 1);
  ....
}

Unity C# reference source code

V3080 CWE-476 Possible null dereference. Consider inspecting 'm_RowRects'. TreeViewControlGUI.cs 272

public override void GetFirstAndLastRowVisible(....)
{
  ....
  if (rowCount != m_RowRects.Count)
  {
    m_RowRects = null;
    throw new InvalidOperationException(string.Format("....",
              rowCount, m_RowRects.Count));
  }
  ....
}

Unity C# reference source code

V3080 CWE-476 Possible null dereference. Consider inspecting 'additionalOptions'. MonoCrossCompile.cs 279

static void CrossCompileAOT(....)
{
  ....
  if (additionalOptions != null & additionalOptions.Trim().Length
      > 0)
    arguments += additionalOptions.Trim() + ",";
  ....
}

Infer.NET

V3080 Possible null dereference. Consider inspecting 'value'. Compiler WriteHelpers.cs 78

public static void WriteAttribute(TextWriter writer,
                                  string name,
                                  object defaultValue,
                                  object value,
                                  Func<object, string> converter = null)
{
  if (defaultValue == null && value == null || value.Equals(defaultValue))
  {
    return;
  }

  string stringValue = converter == null ? value.ToString() : converter(value);
  writer.Write($"{name}=\"{stringValue}\" ");
}

Infer.NET

V3080 Possible null dereference. Consider inspecting 'traitFeatureWeightDistribution'. Recommender FeatureParameterDistribution.cs 65

public FeatureParameterDistribution(
         GaussianMatrix traitFeatureWeightDistribution,
         GaussianArray biasFeatureWeightDistribution)
{
  Debug.Assert(
    (traitFeatureWeightDistribution == null &&
     biasFeatureWeightDistribution == null)
     ||
     traitFeatureWeightDistribution.All(
       w =>    w != null
            && w.Count == biasFeatureWeightDistribution.Count),
    "The provided distributions should be valid
     and consistent in the number of features.");
  ....
}

.NET Core Libraries (CoreFX)

V3080 Possible null dereference. Consider inspecting 'attr'. DbConnectionStringBuilder.cs 534

private PropertyDescriptorCollection GetProperties(Attribute[] attributes)
{
  ....
  foreach (Attribute attribute in attributes)
  {
    Attribute attr = property.Attributes[attribute.GetType()];
    if (   (attr == null && !attribute.IsDefaultAttribute())
        || !attr.Match(attribute))
      ....
  }
  ....
}

.NET Core Libraries (CoreFX)

V3080 Possible null dereference. Consider inspecting 'hasher'. PKCS1MaskGenerationMethod.cs 37

public override byte[] GenerateMask(byte[] rgbSeed, int cbReturn)
{
  using (HashAlgorithm hasher
    = (HashAlgorithm)CryptoConfig.CreateFromName(_hashNameValue)) // <=
  {
    ....
    for (....)
    {
      ....
      hasher.TransformBlock(rgbSeed, 0, rgbSeed.Length, rgbSeed, 0); // <=
      ....
    }
    return rgbT;
  }
}

public static object CreateFromName(string name)
{
  return CreateFromName(name, null);
}

public static object CreateFromName(string name, params object[] args)
{
  ....
  if (retvalType == null)
  {
    return null;
  }
  ....
  if (cons == null)
  {
    return null;
  }
  ....

  if (candidates.Count == 0)
  {
    return null;
  }
  ....
  if (rci == null || typeof(Delegate).IsAssignableFrom(rci.DeclaringType))
  {
    return null;
  }
  ....
  return retval;
}

Similar errors can be found in some other places:

• V3080 Possible null dereference. Consider inspecting 'item'. SignatureDescription.cs 31
• V3080 Possible null dereference. Consider inspecting 'item'. SignatureDescription.cs 38

Roslyn Analyzers

V3080 Possible null dereference of method return value. Consider inspecting: GetCandidateReferencedSymbols(...). SyntaxNodeHelper.cs 78

public static IEnumerable<IMethodSymbol> GetCandidateCalleeMethodSymbols(
  SyntaxNode node, SemanticModel semanticModel)
{
  foreach (ISymbol symbol in GetCandidateReferencedSymbols(
                              node, semanticModel))
  {
     if (symbol != null && symbol.Kind == SymbolKind.Method)
     {
        yield return (IMethodSymbol)symbol;
     }
  }
}

Roslyn Analyzers

V3080 Possible null dereference. Consider inspecting 'oldIdName'. CodeFixProvider.cs 1476

private async Task<Document> IdDeclTypeAsync(....)
{
  ....
  ExpressionSyntax oldIdName = null;
  foreach (MemberDeclarationSyntax memberSyntax in members)
  {
     var fieldDeclaration = memberSyntax as FieldDeclarationSyntax;
     if (fieldDeclaration == null)
       continue;
     if (fieldDeclaration.Declaration.Type is IdentifierNameSyntax fieldType
         && fieldType.Identifier.Text == "DiagnosticDescriptor")
     {
       ....
       for (int i = 0; i < ruleArgumentList.Arguments.Count; i++)
       {
         ArgumentSyntax currentArg = ruleArgumentList.Arguments[i];
         string currentArgName = currentArg.NameColon.Name.Identifier.Text;
         if (currentArgName == "id")
         {
           oldIdName = currentArg.Expression;
           break;
         }
       }
       continue;
    }
    ....
  }
  var newRule = rule.ReplaceNode(oldIdName.Ancestors()   // <=
                    .OfType<ArgumentSyntax>()
                    .First(), newArg);
  ....
}

Roslyn Analyzers

V3080 Possible null dereference. Consider inspecting 'methodDeclaration'. DiagnosticAnalyzer.cs 506

private bool CheckIfStatementAnalysis(...
  IMethodSymbol analysisMethodSymbol)
{
  var methodDeclaration = AnalysisGetStatements(analysisMethodSymbol)
                           as MethodDeclarationSyntax;
  var body = methodDeclaration.Body as BlockSyntax;
  if (body == null)
  { return false; }
  ....
}

private MethodDeclarationSyntax AnalysisGetStatements(
   IMethodSymbol
   analysisMethodSymbol)
{
  MethodDeclarationSyntax result = null;
  if (analysisMethodSymbol == null)
  {
     return result;
  }
  var methodDeclaration = analysisMethodSymbol
                            .DeclaringSyntaxReferences[0]
                            .GetSyntax() as MethodDeclarationSyntax;
  if (methodDeclaration == null)
  {
     return result;
  }
  return methodDeclaration;
}

Orchard CMS

V3080 Possible null dereference. Consider inspecting 'itemTag'. CoreShapes.cs 92

public async Task<IHtmlContent> List(.... string ItemTag....)
{
  ....
  string itemTagName = null;
  if (ItemTag != "-")
  {
    itemTagName = string.IsNullOrEmpty(ItemTag) ? "li" : ItemTag;
  }
  var index = 0;
  foreach (var item in items)
  {
    var itemTag = String.IsNullOrEmpty(itemTagName) ? null : ....;
    ....
    itemTag.InnerHtml.AppendHtml(itemContent);
    listTag.InnerHtml.AppendHtml(itemTag);
    ++index;
  }
  return listTag;
}

Orchard CMS

V3080 Possible null dereference of method return value. Consider inspecting: CreateScope(). SetupService.cs 136

public async Task<string> SetupInternalAsync(SetupContext context)
{
  ....
  using (var shellContext = await ....)
  {
    await shellContext.CreateScope().UsingAsync(....);
  }
  ....
}

public ShellScope CreateScope()
{
  if (_placeHolder)
  {
    return null;
  }
  var scope = new ShellScope(this);
  // A new scope can be only used on a non released shell.
  if (!released)
  {
    return scope;
  }
  scope.Dispose();
  return null;
}

Similar errors can be found in some other places:

• V3080 Possible null dereference of method return value. Consider inspecting: CreateScope(). SetupService.cs 192

Orchard CMS

V3080 Possible null dereference. Consider inspecting 'request'. GraphQLMiddleware.cs 148

private async Task ExecuteAsync(HttpContext context....)
{
  ....
  GraphQLRequest request = null;
  ....
  if (HttpMethods.IsPost(context.Request.Method))
  {
    ....
  }
  else if (HttpMethods.IsGet(context.Request.Method))
  {
    ....
    request = new GraphQLRequest();
    ....
  }
  var queryToExecute = request.Query;
  ....
}

public static TElement Get<TElement>(this ContentElement contentElement....)
        where TElement : ContentElement
{
    return (TElement)contentElement.Get(typeof(TElement), name);
}

public static ContentElement Get(this ContentElement contentElement....)
{
  ....
  var elementData = contentElement.Data[name] as JObject;
  if (elementData == null)
  {
    return null;
  }
  ....
}

Orchard CMS

V3080 Possible null dereference of method return value. Consider inspecting: Get<ContentPart>(...). ContentPartHandlerCoordinator.cs 190

public override async Task LoadingAsync(LoadContentContext context)
{
  ....
  context.ContentItem.Get<ContentPart>(typePartDefinition.Name)
                     .Weld(fieldName, fieldActivator.CreateInstance());
  ....
}

public static async Task<IEnumerable> QueryAsync(....)
{
  ....
  var query = await queryManager.GetQueryAsync(queryName);
  if (query == null)
  {
    return null;
  }
  ....
}

Orchard CMS

V3080 Possible null dereference. Consider inspecting 'results'. ContentQueryOrchardRazorHelperExtensions.cs 19

public static async Task<IEnumerable<ContentItem>> ContentQueryAsync(....)
{
  var results = await orchardHelper.QueryAsync(queryName, parameters);
  ....
  foreach (var result in results)
  {
    ....
  }
  ....
}

Azure SDK for .NET

V3080 Possible null dereference. Consider inspecting 'eventPropertyValue'. AmqpMessageConverter.cs 650

private static bool TryCreateEventPropertyForAmqpProperty(
  object amqpPropertyValue,
  out object eventPropertyValue)
{
  eventPropertyValue = null;
  ....
  switch (GetTypeIdentifier(amqpPropertyValue))
  {
    case AmqpProperty.Type.Byte:
    ....
    case AmqpProperty.Type.String:
      eventPropertyValue = amqpPropertyValue;
      return true;
    ....
  }
  ....
  switch (amqpPropertyValue)
  {
    case AmqpSymbol symbol:
      eventPropertyValue = ....;
      break;

    case byte[] array:
      eventPropertyValue = ....;
      break;

    case ArraySegment<byte> segment when segment.Count == segment.Array.Length:
      eventPropertyValue = ....;
      break;

    case ArraySegment<byte> segment:
      ....
      eventPropertyValue = ....;
      break;

    case DescribedType described when (described.Descriptor is AmqpSymbol):
      eventPropertyValue = ....;
      break;

    default:
      var exception = new SerializationException(
        string.Format(...., eventPropertyValue.GetType().FullName));  // <=
      ....
  }
  ....
}

AvaloniaUI

V3080 Possible null dereference of method return value. Consider inspecting: TranslatePoint(...). VisualExtensions.cs 23

public static Point PointToClient(this IVisual visual, PixelPoint point)
{
  var rootPoint = visual.VisualRoot.PointToClient(point);
  return visual.VisualRoot.TranslatePoint(rootPoint, visual).Value;
}

Similar errors can be found in some other places:

• V3080 Possible null dereference. Consider inspecting 'p'. VisualExtensions.cs 35
• V3080 Possible null dereference. Consider inspecting 'controlPoint'. Scene.cs 176

AvaloniaUI

V3080 Possible null dereference of method return value. Consider inspecting: TransformToVisual(...). ViewportManager.cs 381

private void OnEffectiveViewportChanged(TransformedBounds? bounds)
{
  ....
  var transform = _owner.GetVisualRoot().TransformToVisual(_owner).Value;
  ....
}

Similar errors can be found in some other places:

• V3080 Possible null dereference. Consider inspecting 'transform'. MouseDevice.cs 80

AvaloniaUI

V3080 Possible null dereference. Consider inspecting 'tabItem'. TabItemContainerGenerator.cs 22

protected override IControl CreateContainer(object item)
{
  var tabItem = (TabItem)base.CreateContainer(item);
  tabItem.ParentTabControl = Owner;
  ....
}

osu!

V3080 [CWE-476] Possible null dereference. Consider inspecting 'Beatmap'. WorkingBeatmap.cs 57

protected virtual Track GetVirtualTrack()
{
  ....
  var lastObject = Beatmap.HitObjects.LastOrDefault();
  ....
}

public IBeatmap Beatmap
{
  get
  {
    try
    {
      return LoadBeatmapAsync().Result;
    }
    catch (TaskCanceledException)
    {
      return null;
    }
  }
}

RunUO

V3080 Possible null dereference. Consider inspecting 'winner'. CTF.cs 1302

private void Finish_Callback()
{
  ....
  CTFTeamInfo winner = ( teams.Count > 0 ? teams[0] : null );

  ....

  m_Context.Finish( m_Context.Participants[winner.TeamID] as Participant );
}

Open XML SDK

V3080 Possible null dereference. Consider inspecting 'previousSibling'. OpenXmlCompositeElement.cs 380

public OpenXmlElement PreviousSibling()
{
    if (!(Parent is OpenXmlCompositeElement parent))
    {
        return null;
    }
    ....
}

public override T InsertBefore<T>(T newChild, OpenXmlElement referenceChild)
{
    ....
    OpenXmlElement previousSibling = nextNode.PreviousSibling();
    prevNode.Next = nextNode;
    previousSibling.Next = prevNode;    // <=
    ....
}

Similar errors can be found in some other places:

• V3080 Possible null dereference. Consider inspecting 'prevNode'. OpenXmlCompositeElement.cs 489
• V3080 Possible null dereference. Consider inspecting 'prevNode'. OpenXmlCompositeElement.cs 497

QuantConnect Lean

V3080 Possible null dereference. Consider inspecting 'buyingPowerModel'. BasicTemplateFuturesAlgorithm.cs 107

public override void OnEndOfAlgorithm()
{
  var buyingPowerModel = Securities[_contractSymbol].BuyingPowerModel;
  var futureMarginModel = buyingPowerModel as FutureMarginModel;
  if (buyingPowerModel == null)
  {
    throw new Exception($"Invalid buying power model. " +
                        $"Found: {buyingPowerModel.GetType().Name}. " +
                        $"Expected: {nameof(FutureMarginModel)}");
  }
  ....
}

Ryujinx

V3080 Possible null dereference. Consider inspecting 'firmwareVersion'. MainWindow.cs 605

public SystemVersion GetCurrentFirmwareVersion()
{
    LoadEntries();

    lock (_lock)
    {
        ....

        if (romfs.OpenFile(out IFile systemVersionFile,
            "/file".ToU8Span(),
            OpenMode.Read).IsSuccess())
        {
            return new SystemVersion(systemVersionFile.AsStream());
        }
        ....
    }

    return null;                                                         // <=
}

public void LoadApplication(string path)
{
    ....
    firmwareVersion = _contentManager.GetCurrentFirmwareVersion();       // <=

    RefreshFirmwareLabel();

    string message =
    $"No installed firmware was found but Ryujinx was able to install firmware
      {firmwareVersion.VersionString} from the provided game.            // <=
      \nThe emulator will now start.";
    ....
}

Similar errors can be found in some other places:

• V3080 Possible null dereference. Consider inspecting 'region'. KMemoryManager.cs 46
• V3080 Possible null dereference. Consider inspecting 'node'. KPageTableBase.cs 2250
• V3080 Possible null dereference. Consider inspecting 'node'. KPageTableBase.cs 2316
• And 18 additional diagnostic messages.

PeachPie

V3080 Possible null dereference. Consider inspecting 'data'. PhpStream.cs 1382

public string ReadStringContents(int maxLength)
{
  if (!CanRead) return null;
  var result = StringBuilderUtilities.Pool.Get();

  if (maxLength >= 0)
  {
    while (maxLength > 0 && !Eof)
    {
      string data = ReadString(maxLength);
      if (data == null && data.Length > 0) break; // EOF or error.
      maxLength -= data.Length;
      result.Append(data);
    }
  }
  ....
}

PeachPie

V3080 Possible null dereference. Consider inspecting 'langVersion'. AnalysisFacts.cs 20

public static bool IsAutoloadDeprecated(Version langVersion)
{
  // >= 7.2
  return    langVersion != null && langVersion.Major > 7
         || (langVersion.Major == 7 && langVersion.Minor >= 2);
}

MonoGame

V3080 Possible null dereference. Consider inspecting 'processor'. MonoGame.Framework.Content.Pipeline PipelineProcessorContext.cs 55

public override TOutput Convert<TInput, TOutput>(
  TInput input,
  string processorName,
  OpaqueDataDictionary processorParameters)
{
  var processor = _manager.CreateProcessor(processorName,
                                           processorParameters);
  var processContext = new PipelineProcessorContext(....);
  var processedObject = processor.Process(input, processContext);
  ....
}

MonoGame

V3080 Possible null dereference inside method at 'type.IsArray'. Consider inspecting the 1st argument: collectionElementType. MonoGame.Framework.Content.Pipeline GenericCollectionHelper.cs 48

public GenericCollectionHelper(IntermediateSerializer serializer,
                               Type type)
{
  var collectionElementType = GetCollectionElementType(type, false);
  _contentSerializer =
                serializer.GetTypeSerializer(collectionElementType);
  ....
}

Cloudscribe

V3080 Possible null dereference. Consider inspecting 'TargetValue'. RequiredWhenAttribute.cs 78

protected override ValidationResult IsValid(....)
{
  if (field != null)
  {
    ....

    // compare the value against the target value
    if ((dependentValue == null && TargetValue == null) ||
        (dependentValue != null &&
         (TargetValue.Equals("*") ||
          dependentValue.Equals(TargetValue))))
    {
      ....
    }
  }

  return ValidationResult.Success;
}

Orchard Core

V3080 Possible null dereference. Consider inspecting 'metadata.CreateRouteValues'. ContentAnchorTag.cs 188

public async ValueTask<Completion> WriteToAsync(....)
{
  ....
  if (metadata.CreateRouteValues == null)
  {
    if (routeValues != null)
    {
      foreach (var attribute in routeValues)
      {
        metadata.CreateRouteValues.Add(attribute.Key, attribute.Value);
      }
    }
    ....
  }
  ....
}

Eto.Forms

V3080 Possible null dereference. Consider inspecting 'Control'. Eto.Gtk3 RadioMenuItemHandler.cs 143

public bool Enabled
{
  get { return Control != null ? enabled : Control.Sensitive; }
  set {
    if (Control != null)
      Control.Sensitive = value;
    else
      enabled = value;
  }
}

Discord.NET

V3080 Possible null dereference. Consider inspecting 'type'. NullableComponentConverter.cs 15

internal class NullableComponentConverter<T> : ComponentTypeConverter<T>
{
  ....

  public NullableComponentConverter(InteractionService interactionService,
                                    IServiceProvider services)
  {
    var type = Nullable.GetUnderlyingType(typeof(T));

    if (type is null)
      throw new ArgumentException($"No type {nameof(TypeConverter)}" +
                                  $"is defined for this {type.FullName}",  // <=
                                  "type");

    _typeConverter = interactionService
                       .GetComponentTypeConverter(type, services);
  }
  ....
}

OrchardCore

V3080 Possible null dereference. Consider inspecting 'metadata.CreateRouteValues'. ContentAnchorTag.cs 188

public async ValueTask<Completion> WriteToAsync(
             List<FilterArgument> argumentsList,
             IReadOnlyList<Statement> statements,
             TextWriter writer,
             TextEncoder encoder,
             LiquidTemplateContext context)
{
  if (displayFor != null)
  {
    ....
  }
  else if (removeFor != null)
  {
    ....

    if (metadata.RemoveRouteValues != null)
    {
      if (routeValues != null)
      {
        foreach (var attribute in routeValues)
        {
          metadata.RemoveRouteValues.Add(attribute.Key, attribute.Value);
        }
      }

        ....
    }
  }
  else if (createFor != null)
  {
    ....
    var metadata = await contentManager
                   .PopulateAspectAsync<ContentItemMetadata>(createFor);

    if (metadata.CreateRouteValues == null)                       // <=
    {
      if (routeValues != null)
      {
        foreach (var attribute in routeValues)
        {
          metadata.CreateRouteValues.Add(attribute.Key,           // <=
                                         attribute.Value);
        }
      }
      ....
    }
  }
  ....
}

GrandNode

V3080 Possible null dereference. Consider inspecting 'selectedContactAttributes'. ContactUsSendCommandHandler.cs 356

private async Task<IList<ContactUsModel.ContactAttributeModel>>
PrepareContactAttributeModel(IList<CustomAttribute> selectedContactAttributes,
                             string storeId)
{
  ....
  if (selectedContactAttributes != null || selectedContactAttributes.Any())
    ....
  ....
}

protobuf-net

V3080 Possible null dereference. Consider inspecting 'method'. Helpers.cs 74

internal static MethodInfo GetGetMethod(....)
{
  if (property is null) return null;
  MethodInfo method = property.GetGetMethod(nonPublic);
  if (method is null && !nonPublic && allowInternal)
  {
    method = property.GetGetMethod(true);
    if (method is null && !(   method.IsAssembly           // <=
                            || method.IsFamilyOrAssembly))
    {
      method = null;
    }
  }
  return method;
}

Ryujinx

V3080 Possible null dereference of method return value. Consider inspecting: GetTextureSpecState(...). ShaderSpecializationState.cs 408

private Box<....> GetTextureSpecState(....)
{
  TextureKey key = new TextureKey(stageIndex, handle, cbufSlot);
  if (_textureSpecialization.TryGetValue(key,
        out Box<TextureSpecializationState> state))
  {
    return state;
  }
  return null;   // <=
}

public (uint, bool) GetFormat(....)
{
  TextureSpecializationState state =
    GetTextureSpecState(stageIndex, handle, cbufSlot).Value;   // <=
  ....
}

Ryujinx

V3080 Possible null dereference. Consider inspecting 'firmwareVersion'. AppHost.cs 541

public SystemVersion GetCurrentFirmwareVersion()
{
  LoadEntries();
  lock (_lock)
  {
    ....
    if (....)
    {
      return new SystemVersion(systemVersionFile.AsStream());
    }
    ....
  }
  return null;   // <=
}

public async Task<bool> LoadGuestApplication(){
  ....
  firmwareVersion = ContentManager.GetCurrentFirmwareVersion();

  await ContentDialogHelper.CreateInfoDialog(
    LocaleManager.Instance.UpdateAndGetDynamicValue(
      ....,
      firmwareVersion.VersionString),                  // <=
    LocaleManager.Instance.UpdateAndGetDynamicValue(
      ....,
      firmwareVersion.VersionString),                  // <=
    ....);
  ....
}

Microsoft PowerToys

V3080 Possible null dereference. Consider inspecting 'updatingSettingsConfig'. LauncherViewModel.cs 138

public static UpdatingSettings LoadSettings()
{
  FileSystem fileSystem = new FileSystem();
  var localAppDataDir = Environment.GetFolderPath(....);
  var file = localAppDataDir + SettingsFilePath + SettingsFile;

  if (fileSystem.File.Exists(file))
  {
    try
    {
      Stream inputStream = fileSystem.File.Open(file, FileMode.Open);
      StreamReader reader = new StreamReader(inputStream);
      string data = reader.ReadToEnd();
      ....
    }
    catch (Exception)
    {}
  }

  return null; // <=
}

public LauncherViewModel(....)
{
  ....

  if (updatingSettingsConfig == null)
  {
    updatingSettingsConfig = new UpdatingSettings();
  }

  updatingSettingsConfig = UpdatingSettings.LoadSettings();

  if (updatingSettingsConfig.State == ....) // <=
  ....
}

TowerDefense-GameFramework-Demo

V3080 Possible null dereference. Consider inspecting 'data'. DataManager.cs 122

public void RemoveData(Data data)
{
  if (data == null)
  {
    throw new GameFrameworkException(Utility.Text.Format("Data '{0}' is null.",
                                                         data.Name.ToString()));
  }

  ....
}

Garnet

V3080 Possible null dereference. Consider inspecting 'sessionTransactionProcMap[id].Item1'. CustomCommandManagerSession.cs 28

public (....) GetCustomTransactionProcedure(....)
{
  if (sessionTransactionProcMap[id].Item1 == null)
  {
    var entry = customCommandManager.transactionProcMap[id];
    sessionTransactionProcMap[id].Item1 = entry.proc != null ? entry.proc()
                                                             : null;
    sessionTransactionProcMap[id].Item2 = entry.NumParams;

    sessionTransactionProcMap[id].Item1.txnManager = txnManager;
    sessionTransactionProcMap[id].Item1.scratchBufferManager =
      scratchBufferManager;
  }
  return sessionTransactionProcMap[id];
}

WolvenKit

V3080 Possible null dereference. Consider inspecting 'Archive'. FileEntry.cs 87

public void Extract(Stream output, bool decompressBuffers)
{
  if (Archive is not { } ar)
  {
    throw new InvalidParsingException(
      $"{Archive.ArchiveAbsolutePath} is not a cyberpunk77 archive.");
  }

  ar.CopyFileToStream(output, NameHash64, decompressBuffers);
}