Update partial properties feature branch from main

.github/ISSUE_TEMPLATE/bug-report.md

@@ -15,7 +15,7 @@ A minimal repro, with source-code provided, is ideal.  Using [sharplab](https://
 
 **Diagnostic Id**:
 
-If this is a report about a bug in an analyzer, please include the diagnostic if possible (e.g. `"IDE0030"`).
+If this is a report about a bug in an analyzer, please include the diagnostic ID and message if possible (e.g. `"IDE0030: Use coalesce expression"`).
 
 **Expected Behavior**:
 

azure-pipelines-official.yml

@@ -58,6 +58,7 @@ variables:
   - name: ArtifactServices.Drop.PAT
     value: $(dn-bot-devdiv-drop-rw-code-rw)
   - group: DotNet-Roslyn-Insertion-Variables
+  - group: AzureDevOps-Artifact-Feeds-Pats
 
   - name: BuildConfiguration
     value: release

docs/Language Feature Status.md

@@ -10,6 +10,7 @@ efforts behind them.
 
 | Feature | Branch | State | Developer | Reviewer | IDE Buddy | LDM Champ |
 | ------- | ------ | ----- | --------- | -------- | --------- | --------- |
+| [First-class Span Types](https://github.com/dotnet/csharplang/issues/7905) | [FirstClassSpan](https://github.com/dotnet/roslyn/tree/features/FirstClassSpan) | [In Progress](https://github.com/dotnet/roslyn/issues/73445) | [jjonescz](https://github.com/jjonescz) | [cston](https://github.com/cston), [333fred](https://github.com/333fred) | | [333fred](https://github.com/333fred), [stephentoub](https://github.com/stephentoub) |
 | [Partial properties](https://github.com/dotnet/csharplang/issues/6420) | [partial-properties](https://github.com/dotnet/roslyn/tree/features/partial-properties) | [In Progress](https://github.com/dotnet/roslyn/issues/73090) | [RikkiGibson](https://github.com/RikkiGibson) | [jcouv](https://github.com/jcouv), [333fred](https://github.com/333fred) | [Cosifne](https://github.com/Cosifne) | [333fred](https://github.com/333fred), [RikkiGibson](https://github.com/RikkiGibson) |
 | Ref/unsafe in iterators/async | [RefInAsync](https://github.com/dotnet/roslyn/tree/features/RefInAsync) | [In Progress](https://github.com/dotnet/roslyn/issues/72662) | [jjonescz](https://github.com/jjonescz) | [AlekseyTs](https://github.com/AlekseyTs), [cston](https://github.com/cston) | (no IDE impact) | |
 | [Ref Struct Interfaces](https://github.com/dotnet/csharplang/issues/7608) | [RefStructInterfaces](https://github.com/dotnet/roslyn/tree/features/RefStructInterfaces) | [In Progress](https://github.com/dotnet/roslyn/issues/72124) | [AlekseyTs](https://github.com/AlekseyTs) | [cston](https://github.com/cston), [jjonescz](https://github.com/jjonescz) | [ToddGrun](https://github.com/ToddGrun) |  [agocke](https://github.com/agocke), [jaredpar](https://github.com/jaredpar) |

docs/compilers/CSharp/Compiler Breaking Changes - DotNet 9.md

@@ -0,0 +1,27 @@
+# This document lists known breaking changes in Roslyn after .NET 8 all the way to .NET 9.
+
+## Iterators introduce safe context in C# 13 and newer
+
+***Introduced in Visual Studio 2022 version 17.11***
+
+Although the language spec states that iterators introduce a safe context, Roslyn does not implement that in C# 12 and lower.
+This will change in C# 13 as part of [a feature which allows unsafe code in iterators](https://github.com/dotnet/roslyn/issues/72662).
+The change does not break normal scenarios as it was disallowed to use unsafe constructs directly in iterators anyway.
+However, it can break scenarios where an unsafe context was previously inherited into nested local functions, for example:
+
+```cs
+unsafe class C // unsafe context
+{
+    System.Collections.Generic.IEnumerable<int> M() // an iterator
+    {
+        yield return 1;
+        local();
+        void local()
+        {
+            int* p = null; // allowed in C# 12; error in C# 13
+        }
+    }
+}
+```
+
+You can work around the break simply by adding the `unsafe` modifier to the local function.

docs/compilers/CSharp/Warnversion Warning Waves.md

@@ -13,6 +13,14 @@ In a typical project, this setting is controlled by the `AnalysisLevel` property
 which determines the `WarningLevel` property (passed to the `Csc` task).
 For more information on `AnalysisLevel`, see https://devblogs.microsoft.com/dotnet/automatically-find-latent-bugs-in-your-code-with-net-5/
 
+## Warning level 9
+
+The compiler shipped with .NET 9 (the C# 13 compiler) contains the following warnings which are reported only under `/warn:9` or higher.
+
+| Warning ID | Description |
+|------------|-------------|
+| CS9237 | ['yield return' should not be used in the body of a lock statement](https://github.com/dotnet/roslyn/issues/72443) |
+
 ## Warning level 8
 
 The compiler shipped with .NET 8 (the C# 12 compiler) contains the following warnings which are reported only under `/warn:8` or higher.

docs/contributing/Building, Debugging, and Testing on Windows.md

@@ -86,7 +86,7 @@ give it a try.
 ### Deploying with command-line (recommended method)
 
 You can build and deploy with the following command:
-`.\Build.cmd -Configuration Release -deployExtensions -launch`.
+`.\Build.cmd -Restore -Configuration Release -deployExtensions -launch`.
 
 Then you can launch the `RoslynDev` hive with `devenv /rootSuffix RoslynDev`.
 

docs/contributing/Target Framework Strategy.md

@@ -26,6 +26,7 @@ Projects in our repository should include the following values in `<TargetFramew
 5. `$(NetRoslyn)`: code that needs to execute on .NET but does not have any specific product deployment requirements. For example utilities that are used by our infra, compiler unit tests, etc ... This property also controls which of the frameworks the compiler builds against are shipped in the toolset packages. This value will potentially change in source builds.
 6. `$(NetRoslynAll)`: code, generally test utilities, that need to build for all .NET runtimes that we support.
 7. `$(NetRoslynBuildHostNetCoreVersion)`: the target used for the .NET Core BuildHost process used by MSBuildWorkspace.
+8. `$(NetRoslynNext)`: code that needs to run on the next .NET Core version. This is used during the transition to a new .NET Core version where we need to move forward but don't want to hard code a .NET Core TFM into the build files.
 
 This properties `$(NetCurrent)`, `$(NetPrevious)` and `$(NetMinimum)` are not used in our project files because they change in ways that make it hard for us to maintain corect product deployments. Our product ships on VS and VS Code which are not captured by arcade `$(Net...)` macros. Further as the arcade properties change it's very easy for us to end up with duplicate entries in a `<TargetFarmeworks>` setting. Instead our repo uses the above values and when inside source build or VMR our properties are initialized with arcade properties.
 
@@ -58,7 +59,7 @@ This problem primarily comes from our use of polyfill APIs. To avoid this we emp
 
 This comes up in two forms:
 
-### Pattern for types 
+### Pattern for types
 
 When creating a polyfill for a type use the `#if !NET...` to declare the type and in the `#else` use a `TypeForwardedTo` for the actual type.
 
@@ -99,6 +100,13 @@ When creating a polyfill for an extension use the `#if NET...` to declare the ex
 #endif
 ```
 
+## Transitioning to new .NET SDK
 
+As the .NET team approaches releasing a new .NET SDK the Roslyn team will begin using preview versions of that SDK in our build. This will often lead to test failures in our CI system due to underlying behavior changes in the runtime. These failures will often not show up when running in Visual Studio due to the way the runtime for the test runner is chosen.
 
+To ensure we have a simple developer environment such project should be moved to to the `$(NetRoslynNext)` target framework. That ensures the new runtime is loaded when running tests locally.
+
+When the .NET SDK RTMs and Roslyn adopts it all occurrences of `$(NetRoslynNext)` will be moved to simply `$(NetRoslyn)`.
+
+**DO NOT** include both `$(NetRoslyn)` and `$(NetRoslynNext)` in the same project unless there is a very specific reason that both tests are adding value. The most common case is that the runtime has changed behavior and we simply need to update our baselines to match it. Adding extra TFMs for this just increases test time for very little gain.
 

docs/wiki/EnC-Supported-Edits.md

@@ -50,3 +50,24 @@ This document captures the current state. Potential future improvements in this
 | Edit a member referencing an embedded interop type | - |
 | Edit a member with On Error or Resume statements | Specific to Visual Basic |
 | Edit a member containing an Aggregate, Group By, Simple Join, or Group Join LINQ query clause | Specific to Visual Basic |
+| Edit in a solution containing projects that specify `*` in `AssemblyVersionAttribute`, e.g. `[assembly: AssemblyVersion("1.0.*")`]. | See [workaround](#projects-with-variable-assembly-versions) below. |
+
+### Projects with variable assembly versions
+
+Hot Reload and Edit & Continue are not compatible with using `*` in `AssemblyVersionAttribute` value. Presence of `*` in the version means that the compiler generates a new version
+every build based on the current time. The build then produces non-reproducible, non-deterministic outputs (see [Reproducible Builds](https://reproducible-builds.org)).
+
+It is thus highly recommended to use alternative versioning methods, such as [Nerdbank.GitVersioning](https://github.com/dotnet/Nerdbank.GitVersioning), that derive the assembly version
+from the HEAD commit SHA (for git repositories).
+
+> To enable generating commit SHA based assembly versions using `Nerdbank.GitVersioning` package, specify `{ "assemblyVersion" : {"precision": "revision"} }` setting in `version.json`.
+
+If you prefer to keep using `*` in `AssemblyVersionAttribute` it is recommended to use conditional compilation directive to only apply such version to Release builds like so:
+
+```C#
+#if DEBUG
+[assembly: AssemblyVersion("1.0.0.0")]
+#else
+[assembly: AssemblyVersion("1.0.*")]
+#endif
+```

eng/Directory.Packages.props

@@ -5,6 +5,7 @@
     <MicrosoftCodeAnalysisNetAnalyzersVersion>8.0.0-preview.23468.1</MicrosoftCodeAnalysisNetAnalyzersVersion>
     <MicrosoftCodeAnalysisTestingVersion>1.1.2-beta1.24121.1</MicrosoftCodeAnalysisTestingVersion>
     <MicrosoftVisualStudioExtensibilityTestingVersion>0.1.187-beta</MicrosoftVisualStudioExtensibilityTestingVersion>
+    <_BasicReferenceAssembliesVersion>1.7.2</_BasicReferenceAssembliesVersion>
     <!-- CodeStyleAnalyzerVersion should we updated together with version of dotnet-format in dotnet-tools.json -->
     <CodeStyleAnalyzerVersion>4.8.0-3.final</CodeStyleAnalyzerVersion>
     <VisualStudioEditorPackagesVersion>17.10.72-preview</VisualStudioEditorPackagesVersion>
@@ -56,7 +57,7 @@
       Visual Studio
     -->
     <PackageVersion Include="Microsoft.VisualStudio.SDK" Version="17.10.234-preview.1" />
-    <PackageVersion Include="Microsoft.Internal.VisualStudio.Shell.Framework" Version="17.9.35796-preview.1" />
+    <PackageVersion Include="Microsoft.Internal.VisualStudio.Shell.Framework" Version="17.9.36524" />
     <PackageVersion Include="Microsoft.ServiceHub.Client" Version="4.2.1017" />
     <PackageVersion Include="Microsoft.VisualStudio.Extensibility" Version="$(MicrosoftVisualStudioExtensibilityVersion)" />
     <PackageVersion Include="Microsoft.VisualStudio.Extensibility.Sdk" Version="$(MicrosoftVisualStudioExtensibilityVersion)" />
@@ -99,7 +100,7 @@
     <PackageVersion Include="Microsoft.VisualStudio.Language" Version="$(MicrosoftVisualStudioCoreVersion)" />
     <PackageVersion Include="Microsoft.VisualStudio.Language.NavigateTo.Interfaces" Version="$(MicrosoftVisualStudioCoreVersion)" />
     <PackageVersion Include="Microsoft.VisualStudio.Language.StandardClassification" Version="$(MicrosoftVisualStudioCoreVersion)" />
-    <PackageVersion Include="Microsoft.VisualStudio.LanguageServer.Client" Version="17.10.11-preview" />
+    <PackageVersion Include="Microsoft.VisualStudio.LanguageServer.Client" Version="17.10.72-preview" />
     <PackageVersion Include="Microsoft.VisualStudio.RemoteControl" Version="16.3.52" />
     <PackageVersion Include="Microsoft.VisualStudio.RpcContracts" Version="17.10.3-preview" />
     <PackageVersion Include="Microsoft.VisualStudio.Shell.15.0" Version="17.10.234-preview.1" />
@@ -138,7 +139,7 @@
     <!--
       Language Server
     -->
-    <PackageVersion Include="Microsoft.VisualStudio.LanguageServer.Client.Implementation" Version="17.9.25-preview" />
+    <PackageVersion Include="Microsoft.VisualStudio.LanguageServer.Client.Implementation" Version="17.10.72-preview" />
     <PackageVersion Include="NuGet.ProjectModel" Version="6.8.0-rc.112" />
     <PackageVersion Include="Microsoft.TestPlatform.TranslationLayer" Version="$(MicrosoftTestPlatformVersion)" />
     <PackageVersion Include="Microsoft.TestPlatform.ObjectModel" Version="$(MicrosoftTestPlatformVersion)" />
@@ -293,13 +294,14 @@
     <PackageVersion Include="runtime.linux-x64.Microsoft.NETCore.ILAsm" Version="$(ILAsmPackageVersion)" />
     <PackageVersion Include="runtime.osx-x64.Microsoft.NETCore.ILAsm" Version="$(ILAsmPackageVersion)" />
     <PackageVersion Include="Basic.CompilerLog.Util" Version="0.6.1" />
-    <PackageVersion Include="Basic.Reference.Assemblies.NetStandard20" Version="1.6.0" />
-    <PackageVersion Include="Basic.Reference.Assemblies.Net50" Version="1.6.0" />
-    <PackageVersion Include="Basic.Reference.Assemblies.Net60" Version="1.6.0" />
-    <PackageVersion Include="Basic.Reference.Assemblies.Net70" Version="1.6.0" />
-    <PackageVersion Include="Basic.Reference.Assemblies.Net80" Version="1.4.5" />
-    <PackageVersion Include="Basic.Reference.Assemblies.Net461" Version="1.6.0" />
-    <PackageVersion Include="Basic.Reference.Assemblies.NetStandard13" Version="1.6.0" />
+    <PackageVersion Include="Basic.Reference.Assemblies.NetStandard20" Version="$(_BasicReferenceAssembliesVersion)" />
+    <PackageVersion Include="Basic.Reference.Assemblies.Net50" Version="$(_BasicReferenceAssembliesVersion)" />
+    <PackageVersion Include="Basic.Reference.Assemblies.Net60" Version="$(_BasicReferenceAssembliesVersion)" />
+    <PackageVersion Include="Basic.Reference.Assemblies.Net70" Version="$(_BasicReferenceAssembliesVersion)" />
+    <PackageVersion Include="Basic.Reference.Assemblies.Net80" Version="$(_BasicReferenceAssembliesVersion)" />
+    <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="Microsoft.TeamFoundationServer.Client" Version="19.232.0-preview" />
     <!--
     Microsoft.TeamFoundationServer.Client is referencing System.Data.SqlClient causing CG alert

eng/SourceBuildPrebuiltBaseline.xml

@@ -13,13 +13,15 @@
     <UsagePattern IdentityGlob="Microsoft.CodeAnalysis.VisualBasic.CodeStyle/*" />
     <UsagePattern IdentityGlob="Microsoft.Net.Compilers.Toolset/*" />
 
-    <!-- Roslyn's source-build CI builds both NetPrevious and NetCurrent. This 7.0 ref pack shows up as
+    <!-- Roslyn's source-build CI builds both NetPrevious and NetCurrent. This 7.0 / 8.0 ref pack shows up as
          prebuilt only for the repo CI build but not full source-build. -->
     <UsagePattern IdentityGlob="Microsoft.AspNetCore.App.Ref/7.0*" />
+    <UsagePattern IdentityGlob="Microsoft.AspNetCore.App.Ref/8.0*" />
 
-    <!-- Roslyn's source-build CI builds both NetPrevious and NetCurrent. This 7.0 ref pack shows up as
+    <!-- Roslyn's source-build CI builds both NetPrevious and NetCurrent. This 7.0 / 8.0 ref pack shows up as
          prebuilt only for the repo CI build but not full source-build. -->
     <UsagePattern IdentityGlob="Microsoft.NETCore.App.Ref/7.0*" />
+    <UsagePattern IdentityGlob="Microsoft.NETCore.App.Ref/8.0*" />
 
      <!-- This is upgraded to latest version in full source-build and can be baselined for repo build -->
     <UsagePattern IdentityGlob="Microsoft.Extensions.Configuration*/8.0*" />

eng/Version.Details.xml

@@ -110,14 +110,14 @@
     </Dependency>
   </ProductDependencies>
   <ToolsetDependencies>
-    <Dependency Name="Microsoft.DotNet.Arcade.Sdk" Version="8.0.0-beta.24204.3">
+    <Dependency Name="Microsoft.DotNet.Arcade.Sdk" Version="9.0.0-beta.24265.1">
       <Uri>https://github.com/dotnet/arcade</Uri>
-      <Sha>188340e12c0a372b1681ad6a5e72c608021efdba</Sha>
+      <Sha>15eea424d3b2dd25a5c0b10e8adc8aeed50129a1</Sha>
     </Dependency>
     <!-- Intermediate is necessary for source build. -->
-    <Dependency Name="Microsoft.SourceBuild.Intermediate.arcade" Version="8.0.0-beta.24204.3">
+    <Dependency Name="Microsoft.SourceBuild.Intermediate.arcade" Version="9.0.0-beta.24265.1">
       <Uri>https://github.com/dotnet/arcade</Uri>
-      <Sha>188340e12c0a372b1681ad6a5e72c608021efdba</Sha>
+      <Sha>15eea424d3b2dd25a5c0b10e8adc8aeed50129a1</Sha>
       <SourceBuild RepoName="arcade" ManagedOnly="true" />
     </Dependency>
     <Dependency Name="Microsoft.DotNet.XliffTasks" Version="1.0.0-beta.23475.1" CoherentParentDependency="Microsoft.DotNet.Arcade.Sdk">
@@ -144,9 +144,9 @@
       <Uri>https://github.com/dotnet/roslyn</Uri>
       <Sha>5d10d428050c0d6afef30a072c4ae68776621877</Sha>
     </Dependency>
-    <Dependency Name="Microsoft.DotNet.Helix.Sdk" Version="8.0.0-beta.24204.3">
+    <Dependency Name="Microsoft.DotNet.Helix.Sdk" Version="9.0.0-beta.24265.1">
       <Uri>https://github.com/dotnet/arcade</Uri>
-      <Sha>188340e12c0a372b1681ad6a5e72c608021efdba</Sha>
+      <Sha>15eea424d3b2dd25a5c0b10e8adc8aeed50129a1</Sha>
     </Dependency>
     <Dependency Name="Microsoft.CodeAnalysis.NetAnalyzers" Version="8.0.0-preview.23468.1">
       <Uri>https://github.com/dotnet/roslyn-analyzers</Uri>

eng/common/build.cmd

@@ -0,0 +1,3 @@
+@echo off
+powershell -ExecutionPolicy ByPass -NoProfile -command "& """%~dp0build.ps1""" %*"
+exit /b %ErrorLevel%

eng/common/build.ps1

@@ -19,6 +19,7 @@ Param(
   [switch] $pack,
   [switch] $publish,
   [switch] $clean,
+  [switch][Alias('pb')]$productBuild,
   [switch][Alias('bl')]$binaryLog,
   [switch][Alias('nobl')]$excludeCIBinarylog,
   [switch] $ci,
@@ -58,6 +59,7 @@ function Print-Usage() {
   Write-Host "  -sign                   Sign build outputs"
   Write-Host "  -publish                Publish artifacts (e.g. symbols)"
   Write-Host "  -clean                  Clean the solution"
+  Write-Host "  -productBuild           Build the solution in the way it will be built in the full .NET product (VMR) build (short: -pb)"
   Write-Host ""
 
   Write-Host "Advanced settings:"
@@ -120,6 +122,7 @@ function Build {
     /p:Deploy=$deploy `
     /p:Test=$test `
     /p:Pack=$pack `
+    /p:DotNetBuildRepo=$productBuild `
     /p:IntegrationTest=$integrationTest `
     /p:PerformanceTest=$performanceTest `
     /p:Sign=$sign `

eng/common/build.sh

@@ -22,6 +22,9 @@ usage()
   echo "  --sourceBuild              Source-build the solution (short: -sb)"
   echo "                             Will additionally trigger the following actions: --restore, --build, --pack"
   echo "                             If --configuration is not set explicitly, will also set it to 'Release'"
+  echo "  --productBuild             Build the solution in the way it will be built in the full .NET product (VMR) build (short: -pb)"
+  echo "                             Will additionally trigger the following actions: --restore, --build, --pack"
+  echo "                             If --configuration is not set explicitly, will also set it to 'Release'"
   echo "  --rebuild                  Rebuild solution"
   echo "  --test                     Run all unit tests in the solution (short: -t)"
   echo "  --integrationTest          Run all integration tests in the solution"
@@ -59,6 +62,7 @@ scriptroot="$( cd -P "$( dirname "$source" )" && pwd )"
 restore=false
 build=false
 source_build=false
+product_build=false
 rebuild=false
 test=false
 integration_test=false
@@ -105,7 +109,7 @@ while [[ $# > 0 ]]; do
     -binarylog|-bl)
       binary_log=true
       ;;
-    -excludeCIBinarylog|-nobl)
+    -excludecibinarylog|-nobl)
       exclude_ci_binary_log=true
       ;;
     -pipelineslog|-pl)
@@ -126,6 +130,13 @@ while [[ $# > 0 ]]; do
     -sourcebuild|-sb)
       build=true
       source_build=true
+      product_build=true
+      restore=true
+      pack=true
+      ;;
+    -productBuild|-pb)
+      build=true
+      product_build=true
       restore=true
       pack=true
       ;;
@@ -219,7 +230,9 @@ function Build {
     /p:RepoRoot="$repo_root" \
     /p:Restore=$restore \
     /p:Build=$build \
+    /p:DotNetBuildRepo=$product_build \
     /p:ArcadeBuildFromSource=$source_build \
+    /p:DotNetBuildSourceOnly=$source_build \
     /p:Rebuild=$rebuild \
     /p:Test=$test \
     /p:Pack=$pack \