Issues

• NullReferenceException in RecordDecompiler on an assembly from Roslyn

  Bug
  icsharpcode/ILSpy#4295 · Filter by author usr-sse2 opened on Oct 27, 2026

• AvaloniaEdit Issues to date

  ExternalUI
  icsharpcode/ILSpy#4284 · Filter by author christophwille opened on Oct 25, 2026

• Pointer arithmetic in checked context is not detected as such

  BugDecompiler
  icsharpcode/ILSpy#4280 · Filter by author dgrunwald opened on Oct 24, 2026
  1

• Incorrect code generated for expression tree calling method with by-value argument for in parameter

  BugDecompiler
  icsharpcode/ILSpy#4279 · Filter by author dgrunwald opened on Oct 24, 2026

• CSharpDecompiler reads the XML documentation file with ShowXmlDocumentation off

  icsharpcode/ILSpy#4275 · Filter by author Albasha0x0 opened on Oct 23, 2026

• Index was out of range. Must be non-negative and less than the size of the collection. (Parameter 'index')

  icsharpcode/ILSpy#4272 · Filter by author zed-0xff opened on Oct 22, 2026
  1

• App.axaml comment claims the Simple theme has no Dark dictionary; audit dark-mode overrides

  icsharpcode/ILSpy#4151 · Filter by author christophwille opened on Sep 19, 2026

• Duplicate sequence point definitions when generating a PDB for real assemblies

  BugPDBGen
  icsharpcode/ILSpy#4123 · Filter by author siegfriedpammer opened on Sep 8, 2026

• Sequence points can land in the middle of an IL instruction

  BugPDBGen
  icsharpcode/ILSpy#4122 · Filter by author siegfriedpammer opened on Sep 8, 2026

• StateMachineHoistedLocalScopes rows are not aligned with the hoisted slots

  BugPDBGen
  icsharpcode/ILSpy#4121 · Filter by author siegfriedpammer opened on Sep 8, 2026

• Generated PDB contains no imports and its ImportScope table has two roots

  BugPDBGen
  icsharpcode/ILSpy#4120 · Filter by author siegfriedpammer opened on Sep 8, 2026

• nugetfuzz: stage the forward targets of facade assemblies

  icsharpcode/ILSpy#4092 · Filter by author siegfriedpammer opened on Aug 31, 2026

• Two back-to-back deconstructions in one method are not recognized

  BugDecompiler
  icsharpcode/ILSpy#4059 · Filter by author siegfriedpammer opened on Aug 26, 2026
  1

• Lambda parameter 'params' and default values are dropped below C# 12

  Decompiler
  icsharpcode/ILSpy#4058 · Filter by author siegfriedpammer opened on Aug 26, 2026

• Causes the issue of multiple explorer.exe processes failing to exit automatically

  Bug
  icsharpcode/ILSpy#4055 · Filter by author sonyps5201314 opened on Aug 26, 2026
  9

• with expression containing an await leaves the raw <Clone>$ call in the output

  AsyncBugDecompiler
  icsharpcode/ILSpy#4019 · Filter by author christophwille opened on Aug 16, 2026
  2

• Nullable annotations shift after an anonymous type: NullableAttribute flags skip the anonymous type's type arguments

  icsharpcode/ILSpy#4016 · Filter by author siegfriedpammer opened on Aug 16, 2026

• Four await shapes decompile to uncompilable C#

  icsharpcode/ILSpy#4015 · Filter by author siegfriedpammer opened on Aug 16, 2026
  1

• Result of switch expression not being lifted into initializer, causing init-only properties to be set outside of initializer

  BugDecompiler
  icsharpcode/ILSpy#4003 · Filter by author nikitalita opened on Aug 15, 2026

• Improve text rendering clarity in Avalonia UI compared to previous WPF frontend

  icsharpcode/ILSpy#3985 · Filter by author michael-damatov opened on Aug 12, 2026
  8

• Explicit delegate constructor not distinguished in C# decompilation.

  BugDecompiler
  icsharpcode/ILSpy#3921 · Filter by author PetSerAl opened on Jul 27, 2026 · ILSpy Dev Meeting 2026
  2

• Analyze support for enum values

  Enhancement
  icsharpcode/ILSpy#3846 · Filter by author YodaDoge opened on Jul 1, 2026

• Add decompiler accuracy tests as C#/VB.NET/F# snippets

  Enhancement
  icsharpcode/ILSpy#3800 · Filter by author H-A-M-G-E-R opened on Jun 22, 2026
  2

• Metadata explorer: decoding options and richer viewing for CustomDebugInformation blobs

  icsharpcode/ILSpy#3764 · Filter by author siegfriedpammer opened on Jun 10, 2026

• runtime-async: pretty-test gaps in exception/try-finally rewriting

  Bug
  icsharpcode/ILSpy#3745 · Filter by author siegfriedpammer opened on May 20, 2026
  1