Issues

New issue

C# language support status
#829 · dgrunwald opened on Aug 27, 2017
3
Up For Grabs / Help Wanted
#1733 · christophwille opened on Oct 1, 2019

Ctrl-R in left pane doesn't initiate Analyze (again)
icsharpcode/ILSpy#4186 · opened on Sep 27, 2026
4
Shift+MouseWheel (horizontal scrolling) moves in pixel increments
icsharpcode/ILSpy#4173 · opened on Sep 24, 2026
3
WPF project export misses the transitive references the XAML markup compiler needs
icsharpcode/ILSpy#4155 · opened on Sep 20, 2026
foreach is lost when a named argument inlines the loop variable
icsharpcode/ILSpy#4153 · opened on Sep 19, 2026
DeclareVariables: collision check assumes two same-named variables have the same type
icsharpcode/ILSpy#4152 · opened on Sep 19, 2026
App.axaml comment claims the Simple theme has no Dark dictionary; audit dark-mode overrides
icsharpcode/ILSpy#4151 · opened on Sep 19, 2026
ILSpy sometimes lose its taskbar icon
icsharpcode/ILSpy#4143 · opened on Sep 16, 2026
7
Conditional in unsafe code prints (IntPtr) casts where nint was used
icsharpcode/ILSpy#4137 · opened on Sep 13, 2026
Lifted null comparison decompiles to HasValue/GetValueOrDefault with a '? true : false'
icsharpcode/ILSpy#4136 · opened on Sep 13, 2026
1
Bool-to-int conditional is inlined into every use instead of kept in its local
icsharpcode/ILSpy#4135 · opened on Sep 13, 2026
Duplicate sequence point definitions when generating a PDB for real assemblies
icsharpcode/ILSpy#4123 · opened on Sep 8, 2026
Sequence points can land in the middle of an IL instruction
icsharpcode/ILSpy#4122 · opened on Sep 8, 2026
StateMachineHoistedLocalScopes rows are not aligned with the hoisted slots
icsharpcode/ILSpy#4121 · opened on Sep 8, 2026
Generated PDB contains no imports and its ImportScope table has two roots
icsharpcode/ILSpy#4120 · opened on Sep 8, 2026
Pathological decompilation time on large ANTLR3-generated lexer classes (100s+ for a single type)
icsharpcode/ILSpy#4094 · opened on Aug 31, 2026
nugetfuzz: dependency staging can pair a wrong version or framework flavor yet count the reference as resolved
icsharpcode/ILSpy#4093 · opened on Aug 31, 2026
nugetfuzz: stage the forward targets of facade assemblies
icsharpcode/ILSpy#4092 · opened on Aug 31, 2026
Two back-to-back deconstructions in one method are not recognized
icsharpcode/ILSpy#4059 · opened on Aug 26, 2026
1
Lambda parameter 'params' and default values are dropped below C# 12
icsharpcode/ILSpy#4058 · opened on Aug 26, 2026
Causes the issue of multiple explorer.exe processes failing to exit automatically
icsharpcode/ILSpy#4055 · opened on Aug 26, 2026
9
Avalonia UI follow-ups found while fixing #4027/#4028/#4030 (Analyzer pane Ctrl+R and context menu, navigation focus, Dock re-focus)
icsharpcode/ILSpy#4042 · opened on Aug 22, 2026
1
with expression containing an await leaves the raw <Clone>$ call in the output
icsharpcode/ILSpy#4019 · opened on Aug 16, 2026
1
await on a type parameter with an interface constraint drops the operand (LdObjIfRef not supported)
icsharpcode/ILSpy#4017 · opened on Aug 16, 2026
Nullable annotations shift after an anonymous type: NullableAttribute flags skip the anonymous type's type arguments
icsharpcode/ILSpy#4016 · opened on Aug 16, 2026
Four await shapes decompile to uncompilable C#
icsharpcode/ILSpy#4015 · opened on Aug 16, 2026
1

Navigation Menu

Issues

Issues

Ctrl-R in left pane doesn't initiate Analyze (again)

Shift+MouseWheel (horizontal scrolling) moves in pixel increments

WPF project export misses the transitive references the XAML markup compiler needs

foreach is lost when a named argument inlines the loop variable

DeclareVariables: collision check assumes two same-named variables have the same type

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

ILSpy sometimes lose its taskbar icon

Conditional in unsafe code prints (IntPtr) casts where nint was used

Lifted null comparison decompiles to HasValue/GetValueOrDefault with a '? true : false'

Bool-to-int conditional is inlined into every use instead of kept in its local

Duplicate sequence point definitions when generating a PDB for real assemblies

Sequence points can land in the middle of an IL instruction

StateMachineHoistedLocalScopes rows are not aligned with the hoisted slots

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

Pathological decompilation time on large ANTLR3-generated lexer classes (100s+ for a single type)

nugetfuzz: dependency staging can pair a wrong version or framework flavor yet count the reference as resolved

nugetfuzz: stage the forward targets of facade assemblies

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

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

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

Avalonia UI follow-ups found while fixing #4027/#4028/#4030 (Analyzer pane Ctrl+R and context menu, navigation focus, Dock re-focus)

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

await on a type parameter with an interface constraint drops the operand (LdObjIfRef not supported)

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

Four await shapes decompile to uncompilable C#