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Roslynator.CodeAnalysis.Analyzers

5.0.112M downloads/modotnet/roslynator ↗New releases in your daily digest, changelog included.

A collection of analyzers for Roslyn API. - This package is applicable for projects that reference Roslyn packages (Microsoft.CodeAnalysis*).

Last release 3 days ago
04 Oct 2026
Release timing varies
gaps range from 2 weeks to 8 months
Some releases are documented
notes for 14 of 44 stable releases
Nothing withdrawn
no release was ever pulled
7 years old
46 releases · first in 2019

Release timeline

46 releases since 2019

Releases

5.0.14 Oct 2026
Set Visual Studio extension InstallationTarget to API version [17.14,) so Marketplace publish succeeds (VsixPub0029; API 18.0 is experimental). Instal
Fixed

Set Visual Studio extension InstallationTarget to API version [17.14,) so Marketplace publish succeeds (VsixPub0029; API 18.0 is experimental). Installable on Visual Studio 2022 17.14+ and Visual Studio 2026 (VS 2026 extension compatibility).

[CLI] Reference the compiled output of referenced projects that cannot be loaded into the workspace (for example F# projects), so their types are no longer reported as missing (CS0103/CS0246) during analysis (PR)

[CLI] Fix loading of analyzers that reference System.Composition on the .NET 10 SDK (PR)

Fix code fix for RCS1233 to add parentheses when the new &&/|| expression is an operand of an operator with higher precedence (e.g. a && b | c is now fixed to a && (b || c)) (PR)
Open source →

From the same repository

dotnet/roslynator

20192020202120222023202420252026

20192026

One column per quarter.

Add roslyn5.0 NuGet package flavor ( analyzers/dotnet/roslyn5.0/cs ) ( PR )

Added

Add roslyn5.0 NuGet package flavor (analyzers/dotnet/roslyn5.0/cs) (PR)

Breaking

Enable nullable annotations on Roslynator.Common and Roslynator.Workspaces.Common (#1817)
- Source-breaking for projects that compile against this surface with nullable reference types enabled.
[Testing Framework] Lower Roslyn dependency of testing packages to 3.8.0 so that the Roslyn version is determined by the consumer's own Microsoft.CodeAnalysis.* reference instead of being forced to a fixed version (PR)
- Roslynator.Testing.Common, Roslynator.Testing.CSharp, Roslynator.Testing.CSharp.Xunit and Roslynator.Testing.CSharp.MSTest now depend on Microsoft.CodeAnalysis.* >= 3.8.0 (previously >= 4.14.0).
- Roslynator.Testing.Common no longer depends on Roslynator.Core.
- Action required: a test project that previously relied on the testing framework to pull in Roslyn 4.14.0 should now add its own reference, e.g. <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="4.14.0" />. The chosen version raises the maximum C# language version the parser can accept; test sources still parse at CSharpParseOptions.Default unless you set parse options / LanguageVersion (for example LanguageVersion.Latest).
- Action required: a test project that used Roslynator.Core types via the old transitive dependency must now add an explicit Roslynator.Core package reference.

Changed

Bump Roslyn to 5.0.0 (PR)
- CLI targets Roslyn 5.0.0
- Solution build and tests use Roslyn 5.0.0 by default (the testing packages floor at 3.8.0; see Breaking)
Replace Visual Studio 2022 extension with Roslynator 2026 for Visual Studio 2026 ([18.0,19.0)) (PR)
- Extension ships refactorings and compiler diagnostic code fixes; analyzers via NuGet
- Roslynator 2022 remains available as the last 4.x VSIX
Visual Studio Code extension ships refactorings and compiler diagnostic code fixes only (PR)
- Analyzers require Roslynator NuGet packages
- Requires OmniSharp with Roslyn 5.x (C# extension 1.39.15+; set dotnet.server.useOmnisharp to true)

Removed

Remove leftover implementations of obsolete analyzers (XML descriptors remain). Enable the successor rules instead: RCS0014 → RCS0061, RCS0022 → RCS0021, RCS0038 → RCS0015, RCS0043 → RCS0020, RCS0047 → RCS0053, RCS1008/RCS1009/RCS1010/RCS1012/RCS1176/RCS1177 → RCS1264, RCS1035 → RCS1260, RCS1036 → RCS0063, RCS1038/RCS1040/RCS1041/RCS1066/RCS1072/RCS1091/RCS1106 → RCS1259, RCS1063/RCS1064/RCS1065 → RCS1252, RCS1100/RCS1101 → RCS1253, RCS1237 → RCS1254.
Remove SyntaxInverter (Roslynator.CSharp.Workspaces). Use SyntaxLogicalInverter.
Remove unused obsolete DiagnosticCategories constants and make the type internal.
Remove unused ROS0001/ROS0002 diagnostic IDs.
Remove obsolete constructors/properties from the testing package (DiagnosticTestData, CompilerDiagnosticFixTestData, RefactoringTestData).
Remove legacy config keys roslynator.max_line_length, roslynator.prefix_field_identifier_with_underscore, and roslynator_suppress_unity_script_methods. Use roslynator_max_line_length, roslynator_prefix_field_identifier_with_underscore, and roslynator_unity_code_analysis.enabled.
[CLI] Remove obsolete command generate-doc-root. Use generate-doc --root-file-path instead.
Remove bundled analyzers from Visual Studio extension (PR)
- Use Roslynator.Analyzers NuGet package for diagnostics
Remove bundled analyzers from Visual Studio Code extension (PR)
- Use Roslynator NuGet packages for diagnostics
Remove AnalyzersOptionsPage from Visual Studio extension (PR)
Drop support for Visual Studio 2022 VSIX (PR)
- Pin last 4.x release (Roslynator 2022) or use NuGet packages on Visual Studio 2022

Fixed

Fix analyzers RCS1263 and RCS1139 for C# 14 extension block documentation (PR)

Open source →

4.16.116 Aug 2026

Fix analyzer RCS1060 to not report a file that contains only multiple partial declarations of the same type ( PR )

Fixed

Fix analyzer RCS1060 to not report a file that contains only multiple partial declarations of the same type (PR)
Fix analyzer RCS1231 to not suggest in for ref struct parameters (#1725) (PR)
Fix analyzer RCS1260 false positive for omit_when_single_line on multi-line object/collection initializers (#1439) (PR)
Fix analyzer RCS0036 to report blank lines between single-line declarations in records (PR)
Fix analyzer RCS1046 to report async void methods without Async suffix (PR)
Fix analyzer RCS1265 to not report catch clauses with a when filter (PR)
Fix analyzer RCS0034 for types with a primary constructor and multiple constraint clauses (PR)
Fix analyzer RCS1231 to not report CancellationToken in sync methods returning Task (PR)
[CLI] Fix GitLab output format to use relative paths, forward slashes, and 1-based line numbers (PR)
[CLI] Fix generate-doc to omit internal interfaces from type declarations and the Implements section (PR)

Open source →

4.16.08 Aug 2026

[CLI] Suppress error code from Roslynator when it detects issues in code but runs successfully ( PR by @mdrybak )

Added

[CLI] Suppress error code from Roslynator when it detects issues in code but runs successfully (PR by @mdrybak)

Fixed

Fix analyzer RCS1118 to not report local variable passed as 'in' argument (PR by @NoahStolk)
Fix analyzer RCS1074 (PR by @cbersch)
Fix enum contained flags check for partial matches in RCS1258 (PR by @ovska)
Fix analyzer RCS1146 (PR)
Fix analyzer RCS1194 (PR)
Fix analyzer RCS1060 to ignore classes marked with file modifier (PR by @cbersch)
Fix analyzer RCS1231 (PR by @cbersch)
Fix analyzer RCS1246 for conditional access expressions ([PR](#1772 by @krajek))
[CLI] Fix fix command ignoring --include / --exclude file filter (PR by @hashiiiii)
[CLI] Fix loading of projects and solutions on .NET 10 SDK (PR)

Open source →

4.15.014 Dec 2025

Add option roslynator_null_conditional_operator.avoid_negative_boolean_comparison ( PR )

Added

Add option roslynator_null_conditional_operator.avoid_negative_boolean_comparison (PR)
- Do not suggest to use null-conditional operator when result would be ... != true/false
- Applicable for RCS1146

Fixed

Fix analyzer RCS1172 (PR)
[CLI] Fix loc command (PR)
Exclude ref-field backed properties from RCS1085 (PR by @ovska)
[CLI] Fix rename-symbol scope option not being applied correctly (PR by @andrtmschkw)
[CLI] Fix rename-symbol support for top-level statement (PR by @andrtmschkw)

Changed

Migrate to .NET 10 (including command-line tool) (PR)

Open source →

4.14.15 Oct 2025

[CLI] Add support for slnx files ( PR by @darthtrevino )

Added

[CLI] Add support for slnx files (PR by @darthtrevino)
- Bump Roslyn to 4.14.0
- Drop support for .NET 7 SDK

Fixed

Fix analyzer RCS1246 (PR)
Fix analyzer RCS1248 (PR)
Fix analyzer RCS1203 (PR)
Fix analyzer RCS1043 (PR)
Fix analyzer RCS1213 (PR)
- Add unity method OnRectTransformDimensionsChange
Fix analyzer RCS1253 (PR)
Fix refactoring Check expression for null (PR)

Changed

Change behavior of analyzer RCS1206 (PR)
- The condition for option omit_when_single_line will be that the braces/brackets are on the same line, not just the expression in the braces/brackets

Open source →

4.14.026 Jul 2025

Nothing published for this version

4.13.123 Feb 2025

Nothing published for this version

4.13.09 Feb 2025

Nothing published for this version

4.12.1128 Jan 2025

Nothing published for this version

4.12.1017 Dec 2024

Nothing published for this version

4.12.925 Oct 2024

Nothing published for this version

4.12.811 Oct 2024

Nothing published for this version

4.12.71 Oct 2024

Nothing published for this version

4.12.623 Sept 2024

Nothing published for this version

4.12.513 Sept 2024

Nothing published for this version

4.12.41 Jun 2024

Nothing published for this version

4.12.310 May 2024

Nothing published for this version

4.12.223 Apr 2024

Nothing published for this version

4.12.115 Apr 2024

Nothing published for this version

4.12.019 Mar 2024

Nothing published for this version

4.11.019 Feb 2024

Nothing published for this version

4.10.025 Jan 2024

Nothing published for this version

4.9.010 Jan 2024

Nothing published for this version

4.8.02 Jan 2024

Nothing published for this version

4.7.03 Dec 2023

Nothing published for this version

4.6.424 Nov 2023

Nothing published for this version

4.6.323 Nov 2023

Nothing published for this version

4.6.210 Nov 2023

Nothing published for this version

4.6.123 Oct 2023

Nothing published for this version

4.6.018 Oct 2023

Nothing published for this version

4.5.026 Aug 2023

Nothing published for this version

4.4.01 Aug 2023

Nothing published for this version

4.3.024 Apr 2023

Nothing published for this version

4.2.027 Nov 2022

Nothing published for this version

4.1.231 Oct 2022

Nothing published for this version

4.1.129 May 2022

* Bug fixes

Bug fixes

Open source →

4.1.029 Mar 2022

Add analyzer RCS1254 (Normalize format of enum flag value)

Add analyzer RCS1254 (Normalize format of enum flag value)
Add analyzer RCS1253 (Format documentation comment summary)
Add analyzer RCS1252 (Normalize usage of infinite loop)
Add analyzer RCS1251 (Remove unnecessary braces from record declaration)
Add refactoring Deconstruct foreach variable (RR0217)
Add code fix for CS8602, CS8604
Add suggestion to call AddRange instead of Add (RCS1235)
Put back refactoring "Split local declaration and assignment" (RR0194) (issue)
Adopt activation events in VS Code extension (issue) (thanks to ProphetLamb)
Fix: Get config value from global AnalyzerConfig if available (issue)
Fix: Do not suggest using null-forgiving operator for parameter default value (CS8625)
Fix: Check if equality operator is overloaded (RCS1171)
Fix: Do not remove field initialization in struct with constructor(s) (RCS1129)

Open source →

4.0.229 Jan 2022

Disable analyzer ROS003 by default (commit)

Disable analyzer ROS003 by default (commit)
Analyzers that require option to be set should be disabled by default (RCS1018, RCS1096, RCS1250) (commit)

Bug fixes

Fix analyzer RCS1014 (Use explicitly/implicitly typed array) (commit)
Fix analyzer RCS1016 (Use block body or expression body) (commit)
Fix refactoring AddUsingDirective (RR0013) (commit)
Propagate some options from .roslynatorconfig (commit)
Enable ROS analyzers to be set from .roslynatorconfig (commit)
Files generated with source generators have relative paths (commit)

Open source →

4.0.021 Jan 2022

Change category of all analyzers to 'Roslynator'

Bump Roslyn version to 4.0.1
Change category of all analyzers to 'Roslynator'
Migrate all options to EditorConfig
- Enable/disable all analyzers
- Enable/disable all refactorings
- Enable/disable specific refactoring
- Enable/disable all compiler diagnostics fixes
- Enable/disable specific compiler diagnostic fix
Add analyzer RCS0057 (Normalize whitespace at the beginning of a file)
Add analyzer RCS0058 (Normalize whitespace at the end of a file)
Add analyzer RCS0059 (Place new line after/before null-conditional operator)
Add analyzer RCS1249 (Unnecessary null-forgiving operator)
Add analyzer RCS1250 (Use implicit/explicit object creation)
Add refactoring ExpandPositionalRecord (RR0215)
Add refactoring AddAllPropertiesToInitializer (RR0216)
Add code fix for CS8403, CS8618 and CS8625

Open source →

4.0.0-rc16 Jan 2022pre-release

Nothing published for this version

3.3.028 Nov 2021

Bunch of bug fixes and small improvements

Bunch of bug fixes and small improvements
Disable analyzers RCS1079 and RCS1090 by default

Open source →

1.1.115 Aug 2021

DeclareUsingDirectiveOnTopLevel

Analyzers

New Analyzers

RemoveFileWithNoCode
DeclareUsingDirectiveOnTopLevel

Refactorings

New Refactorings

RemoveRegion

Open source →

1.1.011 Jul 2021

ReplaceEqualsExpressionWithStringEquals

Refactorings

New Refactorings

ReplaceAsWithCast
ReplaceEqualsExpressionWithStringEquals

Open source →

1.0.08 Sept 2020

Entire project was renamed to Roslynator

Entire project was renamed to Roslynator
Visual Studio extension C# Analyzers and Refactorings was renamed to Roslynator
Visual Studio extension C# Refactorings was renamed to Roslynator Refactorings
Some assemblies were renamed. As a result ruleset files must be updated in a following way:
- replace <Rules AnalyzerId="Pihrtsoft.CodeAnalysis.CSharp" RuleNamespace="Pihrtsoft.CodeAnalysis.CSharp">
- with <Rules AnalyzerId="Roslynator.CSharp.Analyzers" RuleNamespace="Roslynator.CSharp.Analyzers">

Open source →

1.0.0-beta6 Aug 2019pre-release

Nothing published for this version

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