From 1f3a0dd536b4e5bcd46374660d98a3e52f44e179 Mon Sep 17 00:00:00 2001
From: Andrew Arnott <andrew.arnott@microsoft.com>
Date: Mon, 15 Jun 2026 10:11:09 -0600
Subject: [PATCH] Compile analyzers to support .NET 8 SDK

We had updated the roslyn compiler our analyzers compiled against such that they didn't work on the .NET 8 SDK any more.
This fixes them to roslyn 4.11 so it works on .NET 8.

Fixes #1399
---
 .github/renovate.json                     |  2 +-
 Directory.Packages.props                  | 12 ++++++++----
 src/StreamJsonRpc.Analyzers/.editorconfig |  2 ++
 3 files changed, 11 insertions(+), 5 deletions(-)
 create mode 100644 src/StreamJsonRpc.Analyzers/.editorconfig

diff --git a/.github/renovate.json b/.github/renovate.json
index 32bbf1d5f..8a76a0df5 100644
--- a/.github/renovate.json
+++ b/.github/renovate.json
@@ -11,7 +11,7 @@
 			"allowedVersions": "<2.3"
 		},
 		{
-			"matchJsonata": [ "sharedVariableName='RoslynVersion'" ],
+			"matchJsonata": [ "sharedVariableName='RoslynVersionForAnalyzers'" ],
 			"enabled": false
 		}
 	]
diff --git a/Directory.Packages.props b/Directory.Packages.props
index 2f22e274d..c440b3210 100644
--- a/Directory.Packages.props
+++ b/Directory.Packages.props
@@ -6,7 +6,8 @@
     <CentralPackageTransitivePinningEnabled>true</CentralPackageTransitivePinningEnabled>
     <MessagePackVersion>2.5.198</MessagePackVersion>
     <MicroBuildVersion>2.0.201</MicroBuildVersion>
-    <RoslynVersion>4.14.0</RoslynVersion>
+    <RoslynVersion>5.3.0</RoslynVersion>
+    <RoslynVersionForAnalyzers>4.11.0</RoslynVersionForAnalyzers>
     <CodeAnalysisAnalyzerVersion>4.14.0</CodeAnalysisAnalyzerVersion>
     <VisualStudioThreadingVersion>17.14.15</VisualStudioThreadingVersion>
   </PropertyGroup>
@@ -45,9 +46,12 @@
     <PackageVersion Include="xunit.stafact" Version="3.0.13" />
   </ItemGroup>
   <ItemGroup Condition="'$(IsAnalyzerProject)'=='true'">
-    <PackageVersion Update="System.Collections.Immutable" Version="9.0.0" />
-    <PackageVersion Update="System.IO.Pipelines" Version="9.0.0" />
-    <PackageVersion Update="System.Reflection.Metadata" Version="9.0.0" />
+    <PackageVersion Update="System.Collections.Immutable" Version="8.0.0" />
+    <PackageVersion Update="System.IO.Pipelines" Version="8.0.0" />
+    <PackageVersion Update="System.Reflection.Metadata" Version="8.0.0" />
+    <PackageVersion Update="Microsoft.CodeAnalysis.Common" Version="$(RoslynVersionForAnalyzers)" />
+    <PackageVersion Update="Microsoft.CodeAnalysis.CSharp" Version="$(RoslynVersionForAnalyzers)" />
+    <PackageVersion Update="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="$(RoslynVersionForAnalyzers)" />
   </ItemGroup>
   <ItemGroup Condition="'$(IsBenchmarksProject)'=='true' or '$(MSBuildProjectName)'=='BenchmarkDotNet.Autogenerated' or '$(IsTestProject)'=='true'">
     <PackageVersion Update="System.Collections.Immutable" Version="9.0.0" />
diff --git a/src/StreamJsonRpc.Analyzers/.editorconfig b/src/StreamJsonRpc.Analyzers/.editorconfig
new file mode 100644
index 000000000..e547d8958
--- /dev/null
+++ b/src/StreamJsonRpc.Analyzers/.editorconfig
@@ -0,0 +1,2 @@
+[*.cs]
+dotnet_diagnostic.RSEXPERIMENTAL002.severity = suggestion