dotnet · 333fred · Jul 24, 2025 · Jul 17, 2025 · Jul 17, 2025 · Jul 17, 2025
diff --git a/azure-pipelines-pr-validation.yml b/azure-pipelines-pr-validation.yml
@@ -165,28 +165,6 @@ extends:
           displayName: Setting SourceBranchName variable
           condition: succeeded()
 
-        - task: Powershell@2
-          name: FancyBuild
-          displayName: Setting FancyBuild.BuildNumber
-          inputs:
-            targetType: inline
-            script: |
-              $pull_request = Invoke-RestMethod -Uri "https://api.github.com/repos/dotnet/roslyn/pulls/${{ parameters.PRNumber }}" `
-              -Headers @{
-                "Accept" = "application/vnd.github+json";
-                "X-GitHub-Api-Version" = "2022-11-28"
-              }
-              $buildNumberName = "$(OriginalBuildNumber) - $($pull_request.user.login) - '$($pull_request.title)'"
-              $buildNumberName = $buildNumberName -replace '["/:<>\|?@*]','_'
-              # Maximum buildnumber length is 255 chars and we are going to append to the end to ensure we have space.
-              if ($buildNumberName.Length -GT 253) {
-                $buildNumberName = $buildNumberName.Substring(0, 253)
-              }
-              # Avoid ever ending the BuildNumber with a `.` by always appending to it.
-              $buildNumberName += ' #'
-              Write-Host "##vso[task.setvariable variable=BuildNumber;isoutput=true;isreadonly=true]$buildNumberName"
-              Write-Host "##vso[build.updatebuildnumber]$buildNumberName"
-
         - task: Powershell@2
           displayName: Tag PR validation build
           inputs:
@@ -204,6 +182,25 @@ extends:
             arguments: "-sourceBranchName $(SourceBranchName) -prNumber ${{ parameters.PRNumber }} -commitSHA ${{ parameters.CommitSHA }} -enforceLatestCommit ${{ iif(parameters.EnforceLatestCommit, '1', '0') }}"
           condition: succeeded()
 
+        - task: Powershell@2
+          name: FancyBuild
+          displayName: Setting FancyBuild.BuildNumber
+          inputs:
+            targetType: inline
+            script: |
+              $authorName = git log -1 --pretty=format:"%an" ${{ parameters.CommitSHA }}
+
+              $buildNumberName = "$(OriginalBuildNumber) - $($authorName) - '${{ parameters.PRNumber }}'"
+              $buildNumberName = $buildNumberName -replace '["/:<>\|?@*]','_'
+              # Maximum buildnumber length is 255 chars and we are going to append to the end to ensure we have space.
+              if ($buildNumberName.Length -GT 253) {
+                $buildNumberName = $buildNumberName.Substring(0, 253)
+              }
+              # Avoid ever ending the BuildNumber with a `.` by always appending to it.
+              $buildNumberName += ' #'
+              Write-Host "##vso[task.setvariable variable=BuildNumber;isoutput=true;isreadonly=true]$buildNumberName"
+              Write-Host "##vso[build.updatebuildnumber]$buildNumberName"
+
         - powershell: Write-Host "##vso[task.setvariable variable=VisualStudio.DropName]Products/$(System.TeamProject)/$(Build.Repository.Name)/$(SourceBranchName)/$(OriginalBuildNumber)"
           displayName: Setting VisualStudio.DropName variable
 

diff --git a/azure-pipelines.yml b/azure-pipelines.yml
@@ -400,13 +400,19 @@ stages:
           configuration: Release
       - name: compilerChange
         value: $[dependencies.Determine_Changes.outputs['SetPathVars_compilers.containsChange']]
+      # Set NUGET_PACKAGES to fix issues with package Restore when building with `-ci`.
+      # Workaround for https://github.com/dotnet/arcade/issues/15970
+      - name: NUGET_PACKAGES
+        value: $(Build.SourcesDirectory)\.packages
     steps:
       - template: eng/pipelines/checkout-windows-task.yml
 
       - powershell: eng/build.ps1 -configuration Release -prepareMachine -ci -restore -binaryLogName Restore.binlog 
         displayName: Restore
 
-      - powershell: eng/build.ps1 -configuration Release -prepareMachine -ci -build -pack -publish -sign -binaryLogName Build.binlog /p:DotnetPublishUsingPipelines=true /p:ContinuousIntegrationBuildCorrectness=true
+      # We additionally restore during the build because the Microsoft.DotNet.Build.Tasks.Feed package only restores when we pass `-publish`. See https://github.com/dotnet/arcade/blob/37ccfd66358af6a37a0ec385ec31d1d71bdd8723/src/Microsoft.DotNet.Arcade.Sdk/tools/Tools.proj#L61-L66
+      # Passing `-publish` during the restore step above fails due to no items needing published.
+      - powershell: eng/build.ps1 -configuration Release -prepareMachine -ci -restore -build -pack -publish -sign -binaryLogName Build.binlog /p:DotnetPublishUsingPipelines=true /p:ContinuousIntegrationBuildCorrectness=true
         displayName: Build
 
       # While this task is not executed in the official build, this serves as a PR check for whether symbol exclusions

diff --git a/docs/contributing/Building, Debugging, and Testing on Unix.md b/docs/contributing/Building, Debugging, and Testing on Unix.md
@@ -12,7 +12,7 @@ Particularly for developers who aren't experienced with .NET Core development on
 1. Install [VS Code](https://code.visualstudio.com/Download)
     - After you install VS Code, install the [C# extension](https://marketplace.visualstudio.com/items?itemName=ms-dotnettools.csharp)
     - Important tip: You can look up editor commands by name by hitting *Ctrl+Shift+P*, or by hitting *Ctrl+P* and typing a `>` character. This will help you get familiar with editor commands mentioned below. On a Mac, use *⌘* instead of *Ctrl*.
-1. Install the [.NET 9.0 SDK](https://dotnet.microsoft.com/en-us/download/dotnet/9.0) which matches the `sdk.version` property in [global.json](../../global.json#L3)
+1. Install the [.NET 10.0 SDK](https://dotnet.microsoft.com/en-us/download/dotnet/10.0) which matches the `sdk.version` property in [global.json](../../global.json#L3)
 3. You can build from VS Code by running the *Run Build Task* command, then selecting an appropriate task such as *build* or *build current project* (the latter builds the containing project for the current file you're viewing in the editor).
 4. You can run tests from VS Code by opening a test class in the editor, then using the *Run Tests in Context* and *Debug Tests in Context* editor commands. You may want to bind these commands to keyboard shortcuts that match their Visual Studio equivalents (**Ctrl+R, T** for *Run Tests in Context* and **Ctrl+R, Ctrl+T** for *Debug Tests in Context*).
 5. You can launch a new VS Code instance with the language server from your current code by running the "launch vscode with language server" task.

diff --git a/docs/contributing/Building, Debugging, and Testing on Windows.md b/docs/contributing/Building, Debugging, and Testing on Windows.md
@@ -20,7 +20,7 @@ The minimal required version of .NET Framework is 4.7.2.
     - Ensure C# and Visual Basic, MSBuild, and .NET Core are included in the selected individual components
     - Ensure "Use previews of the .NET Core SDK" is checked in Tools -> Options -> Environment -> Preview Features
     - Restart Visual Studio
-1. Install the [.NET 9.0 SDK](https://dotnet.microsoft.com/en-us/download/dotnet/9.0) which matches the `sdk.version` property in [global.json](../../global.json#L3)
+1. Install the [.NET 10.0 SDK](https://dotnet.microsoft.com/en-us/download/dotnet/10.0) which matches the `sdk.version` property in [global.json](../../global.json#L3)
 1. [PowerShell 5.0 or newer](https://docs.microsoft.com/en-us/powershell/scripting/setup/installing-windows-powershell). If you are on Windows 10, you are fine; you'll only need to upgrade if you're on earlier versions of Windows. The download link is under the ["Upgrading existing Windows PowerShell"](https://docs.microsoft.com/en-us/powershell/scripting/install/installing-windows-powershell?view=powershell-6#upgrading-existing-windows-powershell) heading.
 1. Run Restore.cmd
 1. Open Roslyn.sln

diff --git a/docs/contributing/Compiler Test Plan.md b/docs/contributing/Compiler Test Plan.md
@@ -55,7 +55,7 @@ This document provides guidance for thinking about language interactions and tes
   - Compiler-recognized attributes should not have any effect in earlier LangVersions,
     except a LangVersion error should be reported when functionality depending on the attribute is used
     (for example, InlineArray conversion to Span).
-- Generics (type arguments, variance, constraints including `class`, `struct`, `new()`, `unmanaged`, `notnull`, types and interfaces with nullability)
+- Generics (type arguments, variance, constraints including `class`, `struct`, `new()`, `unmanaged`, `notnull`, `allows ref struct`, types and interfaces with nullability)
 - Default and constant values
 - Partial classes
 - Literals

diff --git a/eng/Directory.Packages.props b/eng/Directory.Packages.props
@@ -4,8 +4,8 @@
     <RoslynDiagnosticsNugetPackageVersion>3.11.0-beta1.24081.1</RoslynDiagnosticsNugetPackageVersion>
     <MicrosoftCodeAnalysisNetAnalyzersVersion>8.0.0-preview.23468.1</MicrosoftCodeAnalysisNetAnalyzersVersion>
     <MicrosoftCodeAnalysisTestingVersion>1.1.3-beta1.24319.1</MicrosoftCodeAnalysisTestingVersion>
-    <MicrosoftVisualStudioExtensibilityTestingVersion>0.1.785-beta</MicrosoftVisualStudioExtensibilityTestingVersion>
-    <_BasicReferenceAssembliesVersion>1.7.9</_BasicReferenceAssembliesVersion>
+    <MicrosoftVisualStudioExtensibilityTestingVersion>0.1.796-beta</MicrosoftVisualStudioExtensibilityTestingVersion>
+    <_BasicReferenceAssembliesVersion>1.8.3</_BasicReferenceAssembliesVersion>
     <!-- CodeStyleAnalyzerVersion should we updated together with version of dotnet-format in dotnet-tools.json -->
     <CodeStyleAnalyzerVersion>4.8.0-3.final</CodeStyleAnalyzerVersion>
     <VisualStudioEditorPackagesVersion>17.13.226</VisualStudioEditorPackagesVersion>
@@ -273,7 +273,7 @@
     <PackageVersion Include="xunit.core" Version="$(_xunitVersion)" />
     <PackageVersion Include="Xunit.Combinatorial" Version="1.6.24" />
     <PackageVersion Include="xunit.extensibility.core" Version="$(_xunitVersion)" />
-    <PackageVersion Include="xunit.runner.visualstudio" Version="3.1.1" />
+    <PackageVersion Include="xunit.runner.visualstudio" Version="3.1.3" />
     <PackageVersion Include="xunit.runner.utility" Version="$(_xunitVersion)" />
     <PackageVersion Include="xunit.abstractions" Version="2.0.3" />
     <PackageVersion Include="xunit.extensibility.execution" Version="$(_xunitVersion)" />
@@ -297,6 +297,7 @@
     <PackageVersion Include="Basic.Reference.Assemblies.Net461" Version="$(_BasicReferenceAssembliesVersion)" />
     <PackageVersion Include="Basic.Reference.Assemblies.NetStandard13" Version="$(_BasicReferenceAssembliesVersion)" />
     <PackageVersion Include="Basic.Reference.Assemblies.Net90" Version="$(_BasicReferenceAssembliesVersion)" />
+    <PackageVersion Include="Basic.Reference.Assemblies.Net100" Version="$(_BasicReferenceAssembliesVersion)" />
     <PackageVersion Include="Microsoft.TeamFoundationServer.Client" Version="19.232.0-preview" />
     <PackageVersion Include="System.Data.SqlClient" Version="$(SystemDataSqlClientVersion)" />
     <!-- fix of vulnerability in 6.0.0 coming via Microsoft.TeamFoundationServer.Client -->

diff --git a/eng/Publishing.props b/eng/Publishing.props
@@ -17,11 +17,14 @@
   <!--
     During PR Validation we only need to publish symbols with Arcade,
     since our packages are published separately to the CoreXT feed.
+
+    Also, do not publish any symbols packages in source-only builds.
   -->
   <Target Name="_ResolvePublishRoslynNuGetPackages"
           DependsOnTargets="BeforePublish"
           BeforeTargets="PublishToAzureDevOpsArtifacts"
-          Condition=" '$(PreReleaseVersionLabel)' == 'pr-validation' ">
+          Condition=" '$(PreReleaseVersionLabel)' == 'pr-validation' or '$(DotNetBuildSourceOnly)' == 'true' ">
+
     <ItemGroup>
       <!-- Determine all NuGet packages being published -->
       <_NuGetPackagesToPush Include="@(ItemsToPushToBlobFeed)"
@@ -30,13 +33,25 @@
       <!-- Determine all symbol packages being published -->
       <_SymbolPackagesToPush Include="@(_NuGetPackagesToPush)"
                              Condition="$([System.String]::Copy(%(FullPath)).EndsWith('.symbols.nupkg'))" />
+      <_SymbolPackagesToPush Include="@(_NuGetPackagesToPush)"
+                             Condition="$([System.String]::Copy(%(FullPath)).Contains('.Symbols.'))" />
+    </ItemGroup>
 
+    <ItemGroup Condition=" '$(PreReleaseVersionLabel)' == 'pr-validation' ">
       <!-- Remove all NuGet packages from being published -->
       <ItemsToPushToBlobFeed Remove="@(_NuGetPackagesToPush)" />
+    </ItemGroup>
+
+    <ItemGroup Condition=" '$(DotNetBuildSourceOnly)' == 'true' ">
+      <!-- Remove all symbols packages from being published -->
+      <ItemsToPushToBlobFeed Remove="@(_SymbolPackagesToPush)" />
+    </ItemGroup>
 
-      <!-- Include symbol packages for publishing -->
+    <ItemGroup Condition=" '$(PreReleaseVersionLabel)' == 'pr-validation' and '$(DotNetBuildSourceOnly)' != 'true' ">
+      <!-- Include symbol packages for publishing-->
       <ItemsToPushToBlobFeed Include="@(_SymbolPackagesToPush)" />
     </ItemGroup>
+
   </Target>
 
 </Project>
diff --git a/eng/Version.Details.props b/eng/Version.Details.props
@@ -0,0 +1 @@
+<!-- will get filled in the next backflow -->
diff --git a/eng/Version.Details.xml b/eng/Version.Details.xml
@@ -1,15 +1,15 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Dependencies>
-  <Source Uri="https://github.com/dotnet/dotnet" Mapping="roslyn" Sha="f451e5d3036a4f140a989e0a7f3f1ae432420e71" BarId="274568" />
+  <Source Uri="https://github.com/dotnet/dotnet" Mapping="roslyn" Sha="c0e325f90fb79db0da6be5128dc292f2aabb264f" BarId="276450" />
   <ProductDependencies>
     <!-- RoslynAnalyzers reference older builds of Roslyn and this is necessary for SourceBuild. -->
     <Dependency Name="Microsoft.CodeAnalysis" Version="3.11.0">
       <Uri>https://github.com/dotnet/roslyn</Uri>
       <Sha>ae1fff344d46976624e68ae17164e0607ab68b10</Sha>
     </Dependency>
-    <Dependency Name="System.CommandLine" Version="2.0.0-beta5.25210.1">
-      <Uri>https://github.com/dotnet/command-line-api</Uri>
-      <Sha>e9b0511d7f1128e2bc3be7a658a2a4ea977e602d</Sha>
+    <Dependency Name="System.CommandLine" Version="2.0.0-beta7.25373.104">
+      <Uri>https://github.com/dotnet/dotnet</Uri>
+      <Sha>c0e325f90fb79db0da6be5128dc292f2aabb264f</Sha>
     </Dependency>
     <!-- Necessary for source-build. This allows the live version of the package to be used by source-build. -->
     <Dependency Name="Microsoft.Bcl.AsyncInterfaces" Version="9.0.0">
@@ -110,13 +110,13 @@
     </Dependency>
   </ProductDependencies>
   <ToolsetDependencies>
-    <Dependency Name="Microsoft.DotNet.Arcade.Sdk" Version="10.0.0-beta.25259.2">
+    <Dependency Name="Microsoft.DotNet.Arcade.Sdk" Version="10.0.0-beta.25367.5">
       <Uri>https://github.com/dotnet/arcade</Uri>
-      <Sha>80c4e4d26cb85c86f7e1be77d2d9eceeef0f3493</Sha>
+      <Sha>d777c20040bdc2e52b372fa98dcb84141ed692d3</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.DotNet.XliffTasks" Version="10.0.0-beta.25259.2">
+    <Dependency Name="Microsoft.DotNet.XliffTasks" Version="10.0.0-beta.25367.5">
       <Uri>https://github.com/dotnet/arcade</Uri>
-      <Sha>80c4e4d26cb85c86f7e1be77d2d9eceeef0f3493</Sha>
+      <Sha>d777c20040bdc2e52b372fa98dcb84141ed692d3</Sha>
     </Dependency>
     <Dependency Name="Microsoft.DiaSymReader" Version="2.0.0">
       <Uri>https://github.com/dotnet/symreader</Uri>
@@ -126,9 +126,9 @@
       <Uri>https://github.com/dotnet/roslyn</Uri>
       <Sha>5d10d428050c0d6afef30a072c4ae68776621877</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.DotNet.Helix.Sdk" Version="10.0.0-beta.25259.2">
+    <Dependency Name="Microsoft.DotNet.Helix.Sdk" Version="10.0.0-beta.25367.5">
       <Uri>https://github.com/dotnet/arcade</Uri>
-      <Sha>80c4e4d26cb85c86f7e1be77d2d9eceeef0f3493</Sha>
+      <Sha>d777c20040bdc2e52b372fa98dcb84141ed692d3</Sha>
     </Dependency>
     <Dependency Name="Microsoft.CodeAnalysis.NetAnalyzers" Version="8.0.0-preview.23468.1">
       <Uri>https://github.com/dotnet/roslyn-analyzers</Uri>

diff --git a/eng/Versions.props b/eng/Versions.props
@@ -32,23 +32,23 @@
   </PropertyGroup>
   <PropertyGroup Condition="'$(DotNetBuildSourceOnly)' != 'true'">
     <MicrosoftIORedistVersion>6.0.1</MicrosoftIORedistVersion>
-    <SystemBuffersVersion>4.5.1</SystemBuffersVersion>
+    <SystemBuffersVersion>4.6.0</SystemBuffersVersion>
     <!--
     Microsoft.TeamFoundationServer.Client is referencing System.Data.SqlClient causing CG alert
     When it updates its referenced System.Data.SqlClient version this should be removed
     -->
     <SystemDataSqlClientVersion>4.8.6</SystemDataSqlClientVersion>
-    <SystemMemoryVersion>4.5.5</SystemMemoryVersion>
-    <SystemNumericsVectorsVersion>4.5.0</SystemNumericsVectorsVersion>
-    <SystemRuntimeCompilerServicesUnsafeVersion>6.0.0</SystemRuntimeCompilerServicesUnsafeVersion>
-    <SystemThreadingTasksExtensionsVersion>4.5.4</SystemThreadingTasksExtensionsVersion>
+    <SystemMemoryVersion>4.6.0</SystemMemoryVersion>
+    <SystemNumericsVectorsVersion>4.6.0</SystemNumericsVectorsVersion>
+    <SystemRuntimeCompilerServicesUnsafeVersion>6.1.0</SystemRuntimeCompilerServicesUnsafeVersion>
+    <SystemThreadingTasksExtensionsVersion>4.6.0</SystemThreadingTasksExtensionsVersion>
     <SystemValueTupleVersion>4.5.0</SystemValueTupleVersion>
   </PropertyGroup>
   <!--
     Versions managed by Arcade (see Versions.Details.xml)
   -->
   <PropertyGroup>
-    <SystemCommandLineVersion>2.0.0-beta5.25210.1</SystemCommandLineVersion>
+    <SystemCommandLineVersion>2.0.0-beta7.25373.104</SystemCommandLineVersion>
     <SystemCompositionVersion>9.0.0</SystemCompositionVersion>
     <SystemConfigurationConfigurationManagerVersion>9.0.0</SystemConfigurationConfigurationManagerVersion>
     <SystemDiagnosticsEventLogVersion>9.0.0</SystemDiagnosticsEventLogVersion>
@@ -147,7 +147,7 @@
     <UsingToolXUnit>false</UsingToolXUnit>
     <UseVSTestRunner>true</UseVSTestRunner>
     <!-- Prohibit the usage of .NET Standard 1.x dependencies. -->
-    <FlagNetStandard1XDependencies Condition="'$(DotNetBuildSourceOnly)' == 'true' and '$(DotNetBuildOrchestrator)' == 'true'">true</FlagNetStandard1XDependencies>
+    <FlagNetStandard1XDependencies Condition="'$(DotNetBuildSourceOnly)' == 'true' and '$(DotNetBuildFromVMR)' == 'true'">true</FlagNetStandard1XDependencies>
   </PropertyGroup>
   <PropertyGroup>
     <!--

diff --git a/eng/common/core-templates/steps/install-microbuild.yml b/eng/common/core-templates/steps/install-microbuild.yml
@@ -30,6 +30,10 @@ steps:
         ${{ if and(eq(parameters.enableMicrobuildForMacAndLinux, 'true'), ne(variables['Agent.Os'], 'Windows_NT')) }}:
           azureSubscription: 'MicroBuild Signing Task (DevDiv)'
           useEsrpCli: true
+        ${{ elseif eq(variables['System.TeamProject'], 'DevDiv') }}:
+          ConnectedPMEServiceName: 6cc74545-d7b9-4050-9dfa-ebefcc8961ea
+        ${{ else }}:
+          ConnectedPMEServiceName: 248d384a-b39b-46e3-8ad5-c2c210d5e7ca
       env:
         TeamName: $(_TeamName)
         MicroBuildOutputFolderOverride: ${{ parameters.microBuildOutputFolder }}

diff --git a/eng/common/core-templates/steps/source-build.yml b/eng/common/core-templates/steps/source-build.yml
@@ -38,11 +38,6 @@ steps:
       targetRidArgs='/p:TargetRid=${{ parameters.platform.targetRID }}'
     fi
 
-    baseRidArgs=
-    if [ '${{ parameters.platform.baseRID }}' != '' ]; then
-      baseRidArgs='/p:BaseRid=${{ parameters.platform.baseRID }}'
-    fi
-
     portableBuildArgs=
     if [ '${{ parameters.platform.portableBuild }}' != '' ]; then
       portableBuildArgs='/p:PortableBuild=${{ parameters.platform.portableBuild }}'
@@ -55,7 +50,6 @@ steps:
       ${{ parameters.platform.buildArguments }} \
       $internalRuntimeDownloadArgs \
       $targetRidArgs \
-      $baseRidArgs \
       $portableBuildArgs \
   displayName: Build
 

diff --git a/eng/common/dotnet.cmd b/eng/common/dotnet.cmd
@@ -0,0 +1,7 @@
+@echo off
+
+:: This script is used to install the .NET SDK.
+:: It will also invoke the SDK with any provided arguments.
+
+powershell -ExecutionPolicy ByPass -NoProfile -command "& """%~dp0dotnet.ps1""" %*"
+exit /b %ErrorLevel%
diff --git a/eng/common/dotnet.ps1 b/eng/common/dotnet.ps1
@@ -0,0 +1,11 @@
+# This script is used to install the .NET SDK.
+# It will also invoke the SDK with any provided arguments.
+
+. $PSScriptRoot\tools.ps1
+$dotnetRoot = InitializeDotNetCli -install:$true
+
+# Invoke acquired SDK with args if they are provided
+if ($args.count -gt 0) {
+  $env:DOTNET_NOLOGO=1
+  & "$dotnetRoot\dotnet.exe" $args
+}