Assert at ICSharpCode.Decompiler.CSharp.Transforms.TransformFieldAndConstructorInitializers.HandleInstanceFieldInitializers

[greenozon]

Input code

Save as proj: "c:\Program Files (x86)\Windows Kits\10\bin\10.0.20348.0\XamlCompiler\Microsoft.Windows.UI.Xaml.Build.Tasks.dll"

Erroneous output

Error decompiling for 'System.Xaml\XamlObjectReader.cs'
in assembly "C:\Program Files (x86)\Windows Kits\10\bin\10.0.20348.0\XamlCompiler\Microsoft.Windows.UI.Xaml.Build.Tasks.dll"
 ---> System.IndexOutOfRangeException: Index was outside the bounds of the array.
   at ICSharpCode.Decompiler.CSharp.Transforms.TransformFieldAndConstructorInitializers.HandleInstanceFieldInitializers(IEnumerable`1 members) in TransformFieldAndConstructorInitializers.cs:line 206
   at ICSharpCode.Decompiler.CSharp.Transforms.TransformFieldAndConstructorInitializers.VisitTypeDeclaration(TypeDeclaration typeDeclaration) in TransformFieldAndConstructorInitializers.cs:line 168
   at ICSharpCode.Decompiler.CSharp.Syntax.TypeDeclaration.AcceptVisitor(IAstVisitor visitor) in TypeDeclaration.cs:line 137
   at ICSharpCode.Decompiler.CSharp.Syntax.DepthFirstAstVisitor.VisitChildren(AstNode node) in DepthFirstAstVisitor.cs:line 43
   at ICSharpCode.Decompiler.CSharp.Syntax.DepthFirstAstVisitor.VisitTypeDeclaration(TypeDeclaration typeDeclaration) in DepthFirstAstVisitor.cs:line 147
   at ICSharpCode.Decompiler.CSharp.Transforms.TransformFieldAndConstructorInitializers.VisitTypeDeclaration(TypeDeclaration typeDeclaration) in TransformFieldAndConstructorInitializers.cs:line 171
   at ICSharpCode.Decompiler.CSharp.Syntax.TypeDeclaration.AcceptVisitor(IAstVisitor visitor) in TypeDeclaration.cs:line 137
   at ICSharpCode.Decompiler.CSharp.Syntax.DepthFirstAstVisitor.VisitChildren(AstNode node) in DepthFirstAstVisitor.cs:line 43
   at ICSharpCode.Decompiler.CSharp.Syntax.DepthFirstAstVisitor.VisitNamespaceDeclaration(NamespaceDeclaration namespaceDeclaration) in DepthFirstAstVisitor.cs:line 142
   at ICSharpCode.Decompiler.CSharp.Syntax.NamespaceDeclaration.AcceptVisitor(IAstVisitor visitor) in NamespaceDeclaration.cs:line 140
   at ICSharpCode.Decompiler.CSharp.Syntax.DepthFirstAstVisitor.VisitChildren(AstNode node) in DepthFirstAstVisitor.cs:line 43
   at ICSharpCode.Decompiler.CSharp.Syntax.DepthFirstAstVisitor.VisitSyntaxTree(SyntaxTree syntaxTree) in DepthFirstAstVisitor.cs:line 57
   at ICSharpCode.Decompiler.CSharp.Syntax.SyntaxTree.AcceptVisitor(IAstVisitor visitor) in SyntaxTree.cs:line 128
   at ICSharpCode.Decompiler.CSharp.Transforms.TransformFieldAndConstructorInitializers.Run(AstNode node, TransformContext context) in TransformFieldAndConstructorInitializers.cs:line 55
   at ICSharpCode.Decompiler.CSharp.CSharpDecompiler.RunTransforms(AstNode rootNode, DecompileRun decompileRun, ITypeResolveContext decompilationContext) in CSharpDecompiler.cs:line 570
   at ICSharpCode.Decompiler.CSharp.CSharpDecompiler.DecompileTypes(IEnumerable`1 types) in CSharpDecompiler.cs:line 956
   at ICSharpCode.Decompiler.CSharp.ProjectDecompiler.WholeProjectDecompiler.<>c__DisplayClass46_0.<WriteCodeFilesInProject>b__5(IGrouping`2 file) in WholeProjectDecompiler.cs:line 289
-- continuing with outer exception (ICSharpCode.Decompiler.DecompilerException) --
   at ICSharpCode.Decompiler.CSharp.ProjectDecompiler.WholeProjectDecompiler.<>c__DisplayClass46_0.<WriteCodeFilesInProject>b__5(IGrouping`2 file) in WholeProjectDecompiler.cs:line 313
   at System.Threading.Tasks.Parallel.<>c__DisplayClass43_0`2.<PartitionerForEachWorker>b__1(IEnumerator& partitionState, Int64 timeout, Boolean& replicationDelegateYieldedBeforeCompletion) in offset 259
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() in offset 17
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw(Exception source) in offset 0
   at System.Threading.Tasks.Parallel.<>c__DisplayClass43_0`2.<PartitionerForEachWorker>b__1(IEnumerator& partitionState, Int64 timeout, Boolean& replicationDelegateYieldedBeforeCompletion) in offset 609
   at System.Threading.Tasks.TaskReplicator.Replica.Execute() in offset 35

Details

• ILSpy version 9.0.0.7823-preview3+21e5d0f0349ff2858d24f768e0f88e40bab48272
  .NET version 8.0.8+08338fcaa5c9b9a8190abb99222fed12aaba956c

Microsoft.Windows.UI.Xaml.Build.Tasks.zip

[greenozon]

@siegfriedpammer it might be some kind of regression? I hit it on many other assemblies...