17.7.1 merges

eng/Versions.props

@@ -2,7 +2,7 @@
 <!-- Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the MIT license. See License.txt in the project root for full license information. -->
 <Project>
   <PropertyGroup>
-    <VersionPrefix>17.7.0</VersionPrefix><DotNetFinalVersionKind>release</DotNetFinalVersionKind>
+    <VersionPrefix>17.7.1</VersionPrefix><DotNetFinalVersionKind>release</DotNetFinalVersionKind>
     <PackageValidationBaselineVersion>17.6.3</PackageValidationBaselineVersion>
     <AssemblyVersion>15.1.0.0</AssemblyVersion>
     <PreReleaseVersionLabel>preview</PreReleaseVersionLabel>

src/BannedSymbols.txt

@@ -1 +1,2 @@
 M:System.Globalization.CompareInfo.IndexOf(System.String,System.Char);CompareInfo.IndexOf can unexpectedly allocate strings--use string.IndexOf
+P:Microsoft.Build.Construction.ProjectElementContainer.Children;Use ChildrenEnumerable instead to avoid boxing

src/Build.OM.UnitTests/Construction/ProjectImportElement_Tests.cs

@@ -28,7 +28,7 @@ public void ReadNone()
         {
             ProjectRootElement project = ProjectRootElement.Create();
 
-            Assert.Null(project.Imports.GetEnumerator().Current);
+            Assert.Empty(project.Imports);
         }
 
         /// <summary>

src/Build.OM.UnitTests/Construction/ProjectImportGroupElement_Tests.cs

@@ -143,7 +143,7 @@ public void ReadNone()
         {
             ProjectRootElement project = ProjectRootElement.Create();
 
-            Assert.Null(project.Imports.GetEnumerator().Current);
+            Assert.Empty(project.Imports);
         }
 
         /// <summary>
@@ -162,7 +162,7 @@ public void ReadNoChild()
 
             ProjectImportGroupElement importGroup = (ProjectImportGroupElement)Helpers.GetFirst(project.ImportGroups);
 
-            Assert.Null(project.Imports.GetEnumerator().Current);
+            Assert.Empty(project.Imports);
             Assert.Equal(0, Helpers.Count(importGroup.Imports));
         }
 

src/Build.OM.UnitTests/Construction/ProjectItemDefinitionGroupElement_Tests.cs

@@ -24,7 +24,7 @@ public void ReadNone()
         {
             ProjectRootElement project = ProjectRootElement.Create();
             Assert.Equal(0, Helpers.Count(project.Children));
-            Assert.Null(project.ItemDefinitionGroups.GetEnumerator().Current);
+            Assert.Empty(project.ItemDefinitionGroups);
         }
 
         /// <summary>

src/Build.OM.UnitTests/Construction/ProjectItemGroupElement_tests.cs

@@ -24,7 +24,7 @@ public void ReadNoItemGroup()
         {
             ProjectRootElement project = ProjectRootElement.Create();
             Assert.Equal(0, Helpers.Count(project.Children));
-            Assert.Null(project.ItemGroups.GetEnumerator().Current);
+            Assert.Empty(project.ItemGroups);
         }
 
         /// <summary>

src/Build.OM.UnitTests/Construction/ProjectPropertyGroupElement_Tests.cs

@@ -23,7 +23,7 @@ public void ReadNoPropertyGroup()
         {
             ProjectRootElement project = ProjectRootElement.Create();
             Assert.Equal(0, Helpers.Count(project.Children));
-            Assert.Null(project.PropertyGroups.GetEnumerator().Current);
+            Assert.Empty(project.PropertyGroups);
         }
 
         /// <summary>

src/Build.OM.UnitTests/Construction/ProjectTargetElement_Tests.cs

@@ -41,7 +41,7 @@ public void AddTargetInvalidName()
         public void ReadNoTarget()
         {
             ProjectRootElement project = ProjectRootElement.Create();
-            Assert.Null(project.Targets.GetEnumerator().Current);
+            Assert.Empty(project.Targets);
         }
 
         /// <summary>

src/Build.OM.UnitTests/Construction/ProjectUsingTaskElement_Tests.cs

@@ -25,7 +25,7 @@ public void ReadNone()
         {
             ProjectRootElement project = ProjectRootElement.Create();
 
-            Assert.Null(project.UsingTasks.GetEnumerator().Current);
+            Assert.Empty(project.UsingTasks);
         }
 
         /// <summary>

src/Build.OM.UnitTests/Construction/UsingTaskParameterGroup_Tests.cs

@@ -65,7 +65,7 @@ public void ReadEmptyParameterGroup()
             UsingTaskParameterGroupElement parameterGroup = GetParameterGroupXml(s_contentEmptyParameterGroup);
             Assert.NotNull(parameterGroup);
             Assert.Equal(0, parameterGroup.Count);
-            Assert.Null(parameterGroup.Parameters.GetEnumerator().Current);
+            Assert.Empty(parameterGroup.Parameters);
         }
 
         /// <summary>

src/Build.UnitTests/Graph/GetCompatiblePlatformGraph_Tests.cs

@@ -27,7 +27,7 @@ namespace Microsoft.Build.Graph.UnitTests
     /// <summary>
     /// Performs SetPlatform negotiation for all project references when opted
     /// in via the EnableDynamicPlatformResolution property.
-    /// 
+    ///
     /// The static graph mirrors the negotiation during build to determine plartform for each node.
     /// These tests mirror GetCompatiblePlatform_Tests.cs in order to make sure they both are in sync.
     /// </summary>
@@ -351,5 +351,102 @@ public void PlatformIsChosenAsDefault()
                 GetFirstNodeWithProjectNumber(graph, 2).ProjectInstance.GetPropertyValue("Platform").ShouldBe(GetFirstNodeWithProjectNumber(graph, 1).ProjectInstance.GetPropertyValue("Platform"));
             }
         }
+
+        // Validate configurations are defined in project reference protocol
+        [Fact]
+        public void SolutionWithoutAllConfigurations()
+        {
+            using (TestEnvironment testEnvironment = TestEnvironment.Create())
+            {
+                var firstProjectName = "1";
+                var secondProjectName = "2";
+                var thirdProjectName = "3";
+                TransientTestFolder folder = testEnvironment.CreateFolder(createFolder: true);
+                TransientTestFolder project1Folder = testEnvironment.CreateFolder(Path.Combine(folder.Path, firstProjectName), createFolder: true);
+                TransientTestFolder project1SubFolder = testEnvironment.CreateFolder(Path.Combine(project1Folder.Path, firstProjectName), createFolder: true);
+                TransientTestFile project1 = testEnvironment.CreateFile(project1SubFolder, $"{firstProjectName}.csproj",
+                    @"<Project>
+                        <PropertyGroup>
+                             <EnableDynamicPlatformResolution>true</EnableDynamicPlatformResolution>
+                             <Platform>x64</Platform>
+                         </PropertyGroup>
+                         <ItemGroup>
+                             <ProjectReference Include=""$(MSBuildThisFileDirectory)\..\..\2\2\2.proj"" />
+                             <ProjectReference Include=""$(MSBuildThisFileDirectory)\..\..\3\3\3.proj"" />
+                         </ItemGroup>
+                  </Project>
+                    ");
+
+                TransientTestFolder project2Folder = testEnvironment.CreateFolder(Path.Combine(folder.Path, secondProjectName), createFolder: true);
+                TransientTestFolder project2SubFolder = testEnvironment.CreateFolder(Path.Combine(project2Folder.Path, secondProjectName), createFolder: true);
+                TransientTestFile project2 = testEnvironment.CreateFile(project2SubFolder, $"{secondProjectName}.proj",
+                    @"<Project>
+                        <PropertyGroup>
+                            <EnableDynamicPlatformResolution>true</EnableDynamicPlatformResolution>
+                            <Platforms>AnyCPU;x64</Platforms>
+                        </PropertyGroup>
+                    </Project>
+                    ");
+
+                TransientTestFolder project3Folder = testEnvironment.CreateFolder(Path.Combine(folder.Path, thirdProjectName), createFolder: true);
+                TransientTestFolder project3SubFolder = testEnvironment.CreateFolder(Path.Combine(project3Folder.Path, thirdProjectName), createFolder: true);
+                TransientTestFile project3 = testEnvironment.CreateFile(project3SubFolder, $"{thirdProjectName}.proj",
+                    @"<Project>
+                        <PropertyGroup>
+                            <EnableDynamicPlatformResolution>true</EnableDynamicPlatformResolution>
+                            <Platforms>AnyCPU;x64</Platforms>
+                        </PropertyGroup>
+                    </Project>
+                    ");
+
+
+                // Slashes here (and in the .slnf) are hardcoded as backslashes intentionally to support the common case.
+                TransientTestFile solutionFile = testEnvironment.CreateFile(folder, "SimpleProject.sln",
+                    @"
+                    Microsoft Visual Studio Solution File, Format Version 12.00
+                    # Visual Studio Version 16
+                    VisualStudioVersion = 16.0.29326.124
+                    MinimumVisualStudioVersion = 10.0.40219.1
+                    Project(""{9A19103F-16F7-4668-BE54-9A1E7A4F7556}"") = ""Project1"", ""1\1\1.csproj"", ""{79B5EBA6-5D27-4976-BC31-14422245A59A}""
+                    EndProject
+                    Project(""{9A19103F-16F7-4668-BE54-9A1E7A4F7556}"") = ""2"", ""2\2\2.proj"", ""{8EFCCA22-9D51-4268-90F7-A595E11FCB2D}""
+                    EndProject
+                    Global
+                        GlobalSection(SolutionConfigurationPlatforms) = preSolution
+                            Debug|x64 = Debug|x64
+                            Release|x64 = Release|x64
+                            EndGlobalSection
+                        GlobalSection(ProjectConfigurationPlatforms) = postSolution
+                            {79B5EBA6-5D27-4976-BC31-14422245A59A}.Debug|x64.ActiveCfg = Debug|x64
+                            {79B5EBA6-5D27-4976-BC31-14422245A59A}.Debug|x64.Build.0 = Debug|x64
+                            {79B5EBA6-5D27-4976-BC31-14422245A59A}.Release|x64.ActiveCfg = Release|x64
+                            {79B5EBA6-5D27-4976-BC31-14422245A59A}.Release|x64.Build.0 = Release|x64
+
+                            {8EFCCA22-9D51-4268-90F7-A595E11FCB2D}.Debug|x64.ActiveCfg = Debug|Any CPU
+                            {8EFCCA22-9D51-4268-90F7-A595E11FCB2D}.Debug|x64.Build.0 = Debug|Any CPU
+                            {8EFCCA22-9D51-4268-90F7-A595E11FCB2D}.Release|x64.ActiveCfg = Release|Any CPU
+                            {8EFCCA22-9D51-4268-90F7-A595E11FCB2D}.Release|x64.Build.0 = Release|Any CPU
+                        EndGlobalSection
+                        GlobalSection(SolutionProperties) = preSolution
+                            HideSolutionNode = FALSE
+                        EndGlobalSection
+                        GlobalSection(ExtensibilityGlobals) = postSolution
+                            SolutionGuid = {DE7234EC-0C4D-4070-B66A-DCF1B4F0CFEF}
+                        EndGlobalSection
+                    EndGlobal
+                ");
+
+                ProjectCollection projectCollection = testEnvironment.CreateProjectCollection().Collection;
+                MockLogger logger = new();
+                projectCollection.RegisterLogger(logger);
+                ProjectGraphEntryPoint entryPoint = new(solutionFile.Path, new Dictionary<string, string>());
+
+                // We want to make sure negotiation respects configuration if defined but negotiates if not.
+                ProjectGraph graphFromSolution = new(entryPoint, projectCollection);
+                logger.AssertNoErrors();
+                GetFirstNodeWithProjectNumber(graphFromSolution, 2).ProjectInstance.GetPropertyValue("Platform").ShouldBe("AnyCPU", "Project2 should have followed the sln config to AnyCPU");
+                GetFirstNodeWithProjectNumber(graphFromSolution, 3).ProjectInstance.GetPropertyValue("Platform").ShouldBe("x64", "Project3 isn't in the solution so it should have negotiated to x64 to match Project1");
+            }
+        }
     }
 }

src/Build/BackEnd/TaskExecutionHost/TaskExecutionHost.cs

@@ -1395,9 +1395,15 @@ private void GatherTaskItemOutputs(bool outputTargetIsItem, string outputTargetN
                                     // Setting an item spec expects the escaped value, as does setting metadata.
                                     newItem = new ProjectItemInstance(_projectInstance, outputTargetName, EscapingUtilities.Escape(output.ItemSpec), parameterLocationEscaped);
 
-                                    newItem.SetMetadataOnTaskOutput(output.CloneCustomMetadata()
-                                        .Cast<DictionaryEntry>()
-                                        .Select(x => new KeyValuePair<string, string>((string)x.Key, EscapingUtilities.Escape((string)x.Value))));
+                                    newItem.SetMetadataOnTaskOutput(EnumerateMetadata(output.CloneCustomMetadata()));
+
+                                    static IEnumerable<KeyValuePair<string, string>> EnumerateMetadata(IDictionary customMetadata)
+                                    {
+                                        foreach (DictionaryEntry de in customMetadata)
+                                        {
+                                            yield return new KeyValuePair<string, string>((string)de.Key, EscapingUtilities.Escape((string)de.Value));
+                                        }
+                                    }
                                 }
                             }
 

src/Build/Construction/ProjectChooseElement.cs

@@ -3,9 +3,7 @@
 
 using System.Collections.Generic;
 using System.Diagnostics;
-using System.Linq;
 using System.Xml;
-using Microsoft.Build.Collections;
 using Microsoft.Build.ObjectModelRemoting;
 using Microsoft.Build.Shared;
 
@@ -60,7 +58,7 @@ public override string Condition
         /// Get the When children.
         /// Will contain at least one entry.
         /// </summary>
-        public ICollection<ProjectWhenElement> WhenElements => new ReadOnlyCollection<ProjectWhenElement>(Children.OfType<ProjectWhenElement>());
+        public ICollection<ProjectWhenElement> WhenElements => GetChildrenOfType<ProjectWhenElement>();
 
         /// <summary>
         /// Get any Otherwise child.