dotnet · Jun 11, 2020 · Jun 2, 2020 · Jun 2, 2020 · Jun 2, 2020 · Jun 2, 2020
diff --git a/.editorconfig b/.editorconfig
@@ -226,9 +226,6 @@ dotnet_diagnostic.RS0037.severity = none
 dotnet_diagnostic.RS0005.severity = none
 
 [src/{Analyzers,CodeStyle,Features,Workspaces}/**/*.{cs,vb}]
-# IDE0005: Remove unnecessary usings/imports
-dotnet_diagnostic.IDE0005.severity = warning
-
 # IDE0011: Add braces
 csharp_prefer_braces = when_multiline:warning
 # NOTE: We need the below severity entry for Add Braces due to https://github.com/dotnet/roslyn/issues/44201
@@ -261,3 +258,12 @@ dotnet_diagnostic.IDE0059.severity = warning
 
 # IDE0060: Remove unused parameter
 dotnet_diagnostic.IDE0060.severity = warning
+
+# CA1822: Make member static
+dotnet_diagnostic.CA1822.severity = warning
+
+# Prefer "var" everywhere
+dotnet_diagnostic.IDE0007.severity = warning
+csharp_style_var_for_built_in_types = true:warning
+csharp_style_var_when_type_is_apparent = true:warning
+csharp_style_var_elsewhere = true:warning
diff --git a/Compilers.slnf b/Compilers.slnf
@@ -2,6 +2,18 @@
   "solution": {
     "path": "Roslyn.sln",
     "projects": [
+      "src\\Analyzers\\CSharp\\Analyzers\\CSharpAnalyzers.shproj",
+      "src\\Analyzers\\CSharp\\CodeFixes\\CSharpCodeFixes.shproj",
+      "src\\Analyzers\\Core\\Analyzers\\Analyzers.shproj",
+      "src\\Analyzers\\Core\\CodeFixes\\CodeFixes.shproj",
+      "src\\Analyzers\\VisualBasic\\Analyzers\\VisualBasicAnalyzers.shproj",
+      "src\\Analyzers\\VisualBasic\\CodeFixes\\VisualBasicCodeFixes.shproj",
+      "src\\CodeStyle\\CSharp\\Analyzers\\Microsoft.CodeAnalysis.CSharp.CodeStyle.csproj",
+      "src\\CodeStyle\\CSharp\\CodeFixes\\Microsoft.CodeAnalysis.CSharp.CodeStyle.Fixes.csproj",
+      "src\\CodeStyle\\Core\\Analyzers\\Microsoft.CodeAnalysis.CodeStyle.csproj",
+      "src\\CodeStyle\\Core\\CodeFixes\\Microsoft.CodeAnalysis.CodeStyle.Fixes.csproj",
+      "src\\CodeStyle\\VisualBasic\\Analyzers\\Microsoft.CodeAnalysis.VisualBasic.CodeStyle.vbproj",
+      "src\\CodeStyle\\VisualBasic\\CodeFixes\\Microsoft.CodeAnalysis.VisualBasic.CodeStyle.Fixes.vbproj",
       "src\\Compilers\\CSharp\\CSharpAnalyzerDriver\\CSharpAnalyzerDriver.shproj",
       "src\\Compilers\\CSharp\\Portable\\Microsoft.CodeAnalysis.CSharp.csproj",
       "src\\Compilers\\CSharp\\Test\\CommandLine\\Microsoft.CodeAnalysis.CSharp.CommandLine.UnitTests.csproj",
@@ -46,7 +58,16 @@
       "src\\Tools\\Source\\CompilerGeneratorTools\\Source\\CSharpSyntaxGenerator\\CSharpSyntaxGenerator.csproj",
       "src\\Tools\\Source\\CompilerGeneratorTools\\Source\\IOperationGenerator\\CompilersIOperationGenerator.csproj",
       "src\\Tools\\Source\\CompilerGeneratorTools\\Source\\VisualBasicErrorFactsGenerator\\VisualBasicErrorFactsGenerator.vbproj",
-      "src\\Tools\\Source\\CompilerGeneratorTools\\Source\\VisualBasicSyntaxGenerator\\VisualBasicSyntaxGenerator.vbproj"
+      "src\\Tools\\Source\\CompilerGeneratorTools\\Source\\VisualBasicSyntaxGenerator\\VisualBasicSyntaxGenerator.vbproj",
+      "src\\Workspaces\\CSharp\\Portable\\Microsoft.CodeAnalysis.CSharp.Workspaces.csproj",
+      "src\\Workspaces\\Core\\Portable\\Microsoft.CodeAnalysis.Workspaces.csproj",
+      "src\\Workspaces\\SharedUtilitiesAndExtensions\\Compiler\\CSharp\\CSharpCompilerExtensions.shproj",
+      "src\\Workspaces\\SharedUtilitiesAndExtensions\\Compiler\\Core\\CompilerExtensions.shproj",
+      "src\\Workspaces\\SharedUtilitiesAndExtensions\\Compiler\\VisualBasic\\VisualBasicCompilerExtensions.shproj",
+      "src\\Workspaces\\SharedUtilitiesAndExtensions\\Workspace\\CSharp\\CSharpWorkspaceExtensions.shproj",
+      "src\\Workspaces\\SharedUtilitiesAndExtensions\\Workspace\\Core\\WorkspaceExtensions.shproj",
+      "src\\Workspaces\\SharedUtilitiesAndExtensions\\Workspace\\VisualBasic\\VisualBasicWorkspaceExtensions.shproj",
+      "src\\Workspaces\\VisualBasic\\Portable\\Microsoft.CodeAnalysis.VisualBasic.Workspaces.vbproj"
     ]
   }
 }
diff --git a/Roslyn.sln b/Roslyn.sln
@@ -292,8 +292,6 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Microsoft.CodeAnalysis.Remo
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Microsoft.Build.Tasks.CodeAnalysis", "src\Compilers\Core\MSBuildTask\Microsoft.Build.Tasks.CodeAnalysis.csproj", "{7AD4FE65-9A30-41A6-8004-AA8F89BCB7F3}"
 EndProject
-Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Roslyn.VisualStudio.RemoteHostClientMock", "src\VisualStudio\RemoteHostClientMock\Roslyn.VisualStudio.RemoteHostClientMock.csproj", "{7259740A-FD0E-480F-A7D4-08BE90AC9051}"
-EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Roslyn.VisualStudio.Next.UnitTests", "src\VisualStudio\Core\Test.Next\Roslyn.VisualStudio.Next.UnitTests.csproj", "{2E1658E2-5045-4F85-A64C-C0ECCD39F719}"
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "BuildBoss", "src\Tools\BuildBoss\BuildBoss.csproj", "{9C0660D9-48CA-40E1-BABA-8F6A1F11FE10}"
@@ -977,10 +975,6 @@ Global
 		{7AD4FE65-9A30-41A6-8004-AA8F89BCB7F3}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{7AD4FE65-9A30-41A6-8004-AA8F89BCB7F3}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{7AD4FE65-9A30-41A6-8004-AA8F89BCB7F3}.Release|Any CPU.Build.0 = Release|Any CPU
-		{7259740A-FD0E-480F-A7D4-08BE90AC9051}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
-		{7259740A-FD0E-480F-A7D4-08BE90AC9051}.Debug|Any CPU.Build.0 = Debug|Any CPU
-		{7259740A-FD0E-480F-A7D4-08BE90AC9051}.Release|Any CPU.ActiveCfg = Release|Any CPU
-		{7259740A-FD0E-480F-A7D4-08BE90AC9051}.Release|Any CPU.Build.0 = Release|Any CPU
 		{2E1658E2-5045-4F85-A64C-C0ECCD39F719}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
 		{2E1658E2-5045-4F85-A64C-C0ECCD39F719}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{2E1658E2-5045-4F85-A64C-C0ECCD39F719}.Release|Any CPU.ActiveCfg = Release|Any CPU
@@ -1358,7 +1352,6 @@ Global
 		{F822F72A-CC87-4E31-B57D-853F65CBEBF3} = {55A62CFA-1155-46F1-ADF3-BEEE51B58AB5}
 		{80FDDD00-9393-47F7-8BAF-7E87CE011068} = {55A62CFA-1155-46F1-ADF3-BEEE51B58AB5}
 		{7AD4FE65-9A30-41A6-8004-AA8F89BCB7F3} = {A41D1B99-F489-4C43-BBDF-96D61B19A6B9}
-		{7259740A-FD0E-480F-A7D4-08BE90AC9051} = {8DBA5174-B0AA-4561-82B1-A46607697753}
 		{2E1658E2-5045-4F85-A64C-C0ECCD39F719} = {8DBA5174-B0AA-4561-82B1-A46607697753}
 		{9C0660D9-48CA-40E1-BABA-8F6A1F11FE10} = {FD0FAF5F-1DED-485C-99FA-84B97F3A8EEC}
 		{21A01C2D-2501-4619-8144-48977DD22D9C} = {38940C5F-97FD-4B2A-B2CD-C4E4EF601B05}

diff --git a/azure-pipelines-official.yml b/azure-pipelines-official.yml
@@ -8,8 +8,7 @@ resources:
 #  SignType: real
 #  SkipTests: false
 #  SkipApplyOptimizationData: false
-#  IbcSourceBranchName: 'default'
-#  IbcDropId: 'default'
+#  IbcDrop: 'default'
 #  PRNumber: 'default'
 
 # The variables `_DotNetArtifactsCategory` and `_DotNetValidationArtifactsCategory` are required for proper publishing of build artifacts. See https://github.com/dotnet/roslyn/pull/38259
@@ -101,8 +100,7 @@ stages:
                 -officialSkipTests $(SkipTests)
                 -officialSkipApplyOptimizationData $(SkipApplyOptimizationData)
                 -officialSourceBranchName $(SourceBranchName)
-                -officialIbcSourceBranchName $(IbcSourceBranchName)
-                -officialIbcDropId $(IbcDropId)
+                -officialIbcDrop $(IbcDrop)
                 /p:RepositoryName=$(Build.Repository.Name)
                 /p:VisualStudioDropAccessToken=$(System.AccessToken)
                 /p:VisualStudioDropName=$(VisualStudio.DropName)

diff --git a/azure-pipelines-richnav.yml b/azure-pipelines-richnav.yml
@@ -0,0 +1,34 @@
+# Run on master CI builds
+trigger:
+  branches:
+    include:
+    - master
+
+pr: none
+
+jobs:
+- job: RichCodeNav_Indexing
+  pool:
+    name: NetCorePublic-Pool
+    queue: BuildPool.Windows.10.Amd64.Open
+  variables:
+    EnableRichCodeNavigation: true
+  timeoutInMinutes: 200
+
+  steps:
+    - script: eng/cibuild.cmd -configuration Debug -prepareMachine
+      displayName: Build
+
+    - task: UseDotNet@2
+      displayName: 'Use .NET Core sdk'
+      inputs:
+        packageType: sdk
+        version: 2.1.503
+
+    - task: RichCodeNavIndexer@0
+      displayName: RichCodeNav Upload
+      inputs:
+        languages: 'csharp'
+        environment: production
+        richNavLogOutputDirectory: $(Build.SourcesDirectory)/artifacts/bin
+      continueOnError: true
diff --git a/azure-pipelines.yml b/azure-pipelines.yml
@@ -34,7 +34,7 @@ jobs:
       release_64:
         _configuration: Release
         _testKind: Test64
-  timeoutInMinutes: 90
+  timeoutInMinutes: 120
 
   steps:
     - script: eng/cibuild.cmd -configuration $(_configuration) -prepareMachine -testDesktop -$(_testKind) -procdump
@@ -62,7 +62,7 @@ jobs:
   pool:
     name: NetCorePublic-Pool
     queue: BuildPool.Windows.10.Amd64.ES.VS2017.Open
-  timeoutInMinutes: 90
+  timeoutInMinutes: 120
 
   steps:
     - script: eng/cibuild.cmd -configuration Debug -prepareMachine -testDesktop

diff --git a/docs/Language Feature Status.md b/docs/Language Feature Status.md
@@ -17,15 +17,15 @@ efforts behind them.
 | [Lambda discard parameters](https://github.com/dotnet/csharplang/issues/111)                       | master                                                                                                         | [Merged](https://github.com/dotnet/roslyn/issues/38820)      | [jcouv](https://github.com/jcouv)                                            | [AlekseyTs](https://github.com/AlekseyTs), [chsienki](https://github.com/chsienki) | [jcouv](https://github.com/jcouv)       |
 | [Native ints](https://github.com/dotnet/csharplang/issues/435)                                     | [features/NativeInt](https://github.com/dotnet/roslyn/tree/features/NativeInt)                                 | [Merged into 16.7p1](https://github.com/dotnet/roslyn/issues/38821) | [cston](https://github.com/cston)                                     | [333fred](https://github.com/333fred), [gafter](https://github.com/gafter)         | [jaredpar](https://github.com/jaredpar) |
 | [Attributes on local functions](https://github.com/dotnet/csharplang/issues/1888)                  | [features/local-function-attributes](https://github.com/dotnet/roslyn/tree/features/local-function-attributes) | [Merged](https://github.com/dotnet/roslyn/issues/38801) | [RikkiGibson](https://github.com/RikkiGibson)                                     | [agocke](https://github.com/agocke)                                                | [agocke](https://github.com/agocke)     |
-| [Function pointers](https://github.com/dotnet/csharplang/issues/191)                               | [function-pointers](https://github.com/dotnet/roslyn/tree/features/function-pointers)                          | [In Progress](https://github.com/dotnet/roslyn/issues/43321) | [333fred](https://github.com/333fred)                                        | [AlekseyTs](https://github.com/AlekseyTs)                                          | [jaredpar](https://github.com/jaredpar) |
-| [Pattern matching improvements](https://github.com/dotnet/csharplang/issues/2850)                  | [features/patterns3](https://github.com/dotnet/roslyn/tree/features/patterns3)                                 | [In progress](https://github.com/dotnet/roslyn/issues/41502) ([test](https://github.com/dotnet/roslyn/issues/40727))                        | [gafter](https://github.com/gafter)                                                | [RikkiGibson](https://github.com/RikkiGibson),[agocke](https://github.com/agocke)  | [gafter](https://github.com/gafter)     |
+| [Function pointers](https://github.com/dotnet/csharplang/issues/191)                               | [function-pointers](https://github.com/dotnet/roslyn/tree/features/function-pointers)                          | [Merged into 16.7p3](https://github.com/dotnet/roslyn/issues/43321) | [333fred](https://github.com/333fred)                                        | [AlekseyTs](https://github.com/AlekseyTs)                                          | [jaredpar](https://github.com/jaredpar) |
+| [Pattern matching improvements](https://github.com/dotnet/csharplang/issues/2850)                  | master                                | [Merged into 16.7p1](https://github.com/dotnet/roslyn/issues/40727)                        | [gafter](https://github.com/gafter)                                                | [RikkiGibson](https://github.com/RikkiGibson),[agocke](https://github.com/agocke)  | [gafter](https://github.com/gafter)     |
 | [Static lambdas](https://github.com/dotnet/csharplang/issues/275)                                  | [features/static-lambdas](https://github.com/dotnet/roslyn/tree/features/static-lambdas)                       | [In progress](https://github.com/dotnet/roslyn/issues/39606) | [CyrusNajmabadi](https://github.com/CyrusNajmabadi)                          | [jcouv](https://github.com/jcouv)                                                  | [jcouv](https://github.com/jcouv)       |
 | [Records](https://github.com/dotnet/csharplang/issues/39)                                          | [features/records](https://github.com/dotnet/roslyn/tree/features/records)                                     | [In progress](https://github.com/dotnet/roslyn/issues/40726) | [agocke](https://github.com/agocke)                                          | [gafter](https://github.com/gafter), [333fred](https://github.com/333fred)         | [agocke](https://github.com/agocke)     |
 | [Target-typed conditional](https://github.com/dotnet/csharplang/issues/2460)                       | [features/target-typing](https://github.com/dotnet/roslyn/tree/features/target-typing)                         | [In Progress](https://github.com/dotnet/roslyn/issues/43186) | [gafter](https://github.com/gafter)                                          | [agocke](https://github.com/agocke), [RikkiGibson](https://github.com/RikkiGibson) | [gafter](https://github.com/gafter) |
 | [Covariant](https://github.com/dotnet/csharplang/issues/49) [Returns](https://github.com/dotnet/csharplang/issues/2844) | [features/covariant-returns](https://github.com/dotnet/roslyn/tree/features/covariant-returns) | [In Progress](https://github.com/dotnet/roslyn/issues/43188) | [gafter](https://github.com/gafter)                                     | [AlekseyTs](https://github.com/AlekseyTs), [agocke](https://github.com/agocke)                                                                            | [gafter](https://github.com/gafter) |
 | [Extension GetEnumerator](https://github.com/dotnet/csharplang/issues/3194)                        | [features/extension-foreach](https://github.com/dotnet/roslyn/tree/features/extension-foreach)                 | [In Progress](https://github.com/dotnet/roslyn/issues/43184) | [YairHalberstadt](https://github.com/YairHalberstadt)                        | [333fred](https://github.com/333fred)                                              | [333fred](https://github.com/333fred) |
 | [Module initializers](https://github.com/dotnet/csharplang/blob/master/proposals/module-initializers.md) | [features/module-initializers](https://github.com/dotnet/roslyn/tree/features/module-initializers)                                                                                    | [In progress / design](https://github.com/dotnet/roslyn/issues/40500)                                         | [RikkiGibson](https://github.com/RikkiGibson) [jnm2](https://github.com/jnm2)| [AlekseyTs](https://github.com/AlekseyTs)                                          | [gafter](https://github.com/gafter) |
-| [Extending Partial](https://github.com/jaredpar/csharplang/blob/partial/proposals/extending-partial-methods.md) | [features/partial-methods](https://github.com/dotnet/roslyn/tree/features/partial-methods)       | [In-Progress](https://github.com/dotnet/roslyn/issues/43795) | [RikkiGibson](https://github.com/RikkiGibson)                                | [chsienki](https://github.com/chsienki)                                            | [jaredpar](https://github.com/jaredpar) |
+| [Extending Partial](https://github.com/jaredpar/csharplang/blob/partial/proposals/extending-partial-methods.md) | [features/partial-methods](https://github.com/dotnet/roslyn/tree/features/partial-methods)       | [Merged into 16.7p2](https://github.com/dotnet/roslyn/issues/43795) | [RikkiGibson](https://github.com/RikkiGibson)                                | [chsienki](https://github.com/chsienki)                                            | [jaredpar](https://github.com/jaredpar) |
 | [Top-level statements](https://github.com/dotnet/csharplang/blob/master/proposals/top-level-statements.md) | [features/SimplePrograms](https://github.com/dotnet/roslyn/tree/features/SimplePrograms)       | [In-Progress](https://github.com/dotnet/roslyn/issues/43563)                                                  | [AlekseyTs](https://github.com/AlekseyTs)                                | [cston](https://github.com/cston), [RikkiGibson](https://github.com/RikkiGibson)                                            | [MadsTorgersen](https://github.com/MadsTorgersen) |
 
 # C# Next

diff --git a/docs/analyzers/Report Analyzer Format.md b/docs/analyzers/Report Analyzer Format.md
@@ -1,6 +1,6 @@
 Introduction
 ============
-The C# and Visual Basic compilers support a /reportanalyzer switch on
+The C# and Visual Basic compilers support a `/reportanalyzer` switch on
 the command line to report additional analyzer information, such as execution time.
 
 The output contains the total wall clock time spent in executing the analyzers and
@@ -9,6 +9,13 @@ Note that the elapsed time may be less than analyzer execution time because
 analyzers can run concurrently. One should use this data only for comparative analysis to
 identify any outlier analyzer which takes signinficantly more time than other analyzers.
 
+MSBuild command
+=============
+Use the following msbuild command line to get the analyzer performance report:
+
+```
+msbuild.exe /v:d /p:reportanalyzer=true <%project_file%>
+```
 
 Output Format
 =============
@@ -84,4 +91,4 @@ Time (s)    %   Analyzer
 
    0.001   <1   XmlDocumentationComments.CSharp.Analyzers, Version=1.2.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35
    0.001   <1      XmlDocumentationComments.Analyzers.CSharpAvoidUsingCrefTagsWithAPrefixAnalyzer
-```
+```
diff --git a/docs/compilers/CSharp/Compiler Breaking Changes - post VS2019.md b/docs/compilers/CSharp/Compiler Breaking Changes - post VS2019.md
@@ -121,3 +121,13 @@ public class Derived : Base<string?>
 }
 ```
 
+19. https://github.com/dotnet/roslyn/pull/44841 In *C# 9* and onwards the language views ambiguities between the `record` identifier as being
+    either a type syntax or a record declaration as choosing the record declaration. The following examples will now be record declarations:
+
+    ```C#
+    abstract class C
+    {
+        record R2() { }
+        abstract record R3();
+    }
+    ```
diff --git a/docs/compilers/Deterministic Inputs.md b/docs/compilers/Deterministic Inputs.md
@@ -20,9 +20,11 @@ The following are considered inputs to the compiler for the purpose of determini
   - Rulesets
   - "additional files" that may be used by analyzers
 - The current culture (for the language in which diagnostics and exception messages are produced).
-- The default encoding (or the current code page) if the encoding is not specified
+- The current OS code page if `/codepage` is not specified and any of the input source files do not have BOM and are not UTF-8 encoded.
 - The existence, non-existence, and contents of files on the compiler's search paths (specified, e.g. by `/lib` or `/recurse`)
-- The CLR platform on which the compiler is run (e.g. the result of `double` arithmetic performed for constant-folding may use excess precision on some platforms).
+- The CLR platform on which the compiler is run:
+  - The result of `double` arithmetic performed for constant-folding may use excess precision on some platforms.
+  - The compiler uses Unicode tables provided by the platform.
 - The version of the zlib library that the CLR uses to implement compression (when `/embed` or `/debug:embedded` is used).
 - The value of `%LIBPATH%`, as it can affect analyzer dependency loading.