[automated] Merge branch 'vs17.8' => 'main'

documentation/wiki/ChangeWaves.md

@@ -26,8 +26,9 @@ A wave of features is set to "rotate out" (i.e. become standard functionality) t
 ### 17.8
 - [[RAR] Don't do I/O on SDK-provided references](https://github.com/dotnet/msbuild/pull/8688)
 - [Delete destination file before copy](https://github.com/dotnet/msbuild/pull/8685)
-- [New serialization approach for transferring build exceptions between processes](https://github.com/dotnet/msbuild/pull/8779)
 - [Moving from SHA1 to SHA256 for Hash task](https://github.com/dotnet/msbuild/pull/8812)
+- [Deprecating custom derived BuildEventArgs](https://github.com/dotnet/msbuild/pull/8917) - feature can be opted out only if [BinaryFormatter](https://learn.microsoft.com/en-us/dotnet/api/system.runtime.serialization.formatters.binary.binaryformatter) is allowed at runtime by editing `MSBuild.runtimeconfig.json`
+
 
 ### 17.6
 - [Parse invalid property under target](https://github.com/dotnet/msbuild/pull/8190)
@@ -68,4 +69,4 @@ A wave of features is set to "rotate out" (i.e. become standard functionality) t
 - [Optimized immutable files up to date checks](https://github.com/dotnet/msbuild/pull/6974)
 - [Add Microsoft.IO.Redist for directory enumeration](https://github.com/dotnet/msbuild/pull/6771)
 - [Process-wide caching of ToolsetConfigurationSection](https://github.com/dotnet/msbuild/pull/6832)
-- [Normalize RAR output paths](https://github.com/dotnet/msbuild/pull/6533)
+- [Normalize RAR output paths](https://github.com/dotnet/msbuild/pull/6533)

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>17.8.0</VersionPrefix>
+    <VersionPrefix>17.8.1</VersionPrefix><DotNetFinalVersionKind>release</DotNetFinalVersionKind>
     <PackageValidationBaselineVersion>17.7.0</PackageValidationBaselineVersion>
     <AssemblyVersion>15.1.0.0</AssemblyVersion>
     <PreReleaseVersionLabel>preview</PreReleaseVersionLabel>

src/Build/BackEnd/Node/OutOfProcNode.cs

@@ -587,7 +587,8 @@ private void SendPacket(INodePacket packet)
 #if RUNTIME_TYPE_NETCORE
                 if (packet is LogMessagePacketBase logMessage
                     && logMessage.EventType == LoggingEventType.CustomEvent 
-                    && ChangeWaves.AreFeaturesEnabled(ChangeWaves.Wave17_8) 
+                    &&
+                    (ChangeWaves.AreFeaturesEnabled(ChangeWaves.Wave17_8) || !Traits.Instance.EscapeHatches.IsBinaryFormatterSerializationAllowed)
                     && Traits.Instance.EscapeHatches.EnableWarningOnCustomBuildEvent)
                 {
                     BuildEventArgs buildEvent = logMessage.NodeBuildEvent.Value.Value;

src/Build/Instance/TaskFactories/TaskHostTask.cs

@@ -1,4 +1,4 @@
-// Licensed to the .NET Foundation under one or more agreements.
+// Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 
 using System;
@@ -436,7 +436,7 @@ private void HandlePacket(INodePacket packet, out bool taskFinished)
         private void HandleTaskHostTaskComplete(TaskHostTaskComplete taskHostTaskComplete)
         {
 #if FEATURE_REPORTFILEACCESSES
-            if (taskHostTaskComplete.FileAccessData.Count > 0)
+            if (taskHostTaskComplete.FileAccessData?.Count > 0)
             {
                 IFileAccessManager fileAccessManager = ((IFileAccessManager)_buildComponentHost.GetComponent(BuildComponentType.FileAccessManager));
                 foreach (FileAccessData fileAccessData in taskHostTaskComplete.FileAccessData)

src/Framework/BinaryTranslator.cs

@@ -582,12 +582,6 @@ public void TranslateDotNet<T>(ref T value)
 
             public void TranslateException(ref Exception value)
             {
-                if (!ChangeWaves.AreFeaturesEnabled(ChangeWaves.Wave17_8))
-                {
-                    TranslateDotNet<Exception>(ref value);
-                    return;
-                }
-
                 if (!TranslateNullable(value))
                 {
                     return;
@@ -1291,12 +1285,6 @@ public void TranslateDotNet<T>(ref T value)
 
             public void TranslateException(ref Exception value)
             {
-                if (!ChangeWaves.AreFeaturesEnabled(ChangeWaves.Wave17_8))
-                {
-                    TranslateDotNet<Exception>(ref value);
-                    return;
-                }
-
                 if (!TranslateNullable(value))
                 {
                     return;

src/Framework/Traits.cs

@@ -188,6 +188,11 @@ internal class EscapeHatches
         /// </summary>
         public readonly bool AlwaysDoImmutableFilesUpToDateCheck = Environment.GetEnvironmentVariable("MSBUILDDONOTCACHEMODIFICATIONTIME") == "1";
 
+        /// <summary>
+        /// When copying over an existing file, copy directly into the existing file rather than deleting and recreating.
+        /// </summary>
+        public readonly bool CopyWithoutDelete = Environment.GetEnvironmentVariable("MSBUILDCOPYWITHOUTDELETE") == "1";
+
         /// <summary>
         /// Emit events for project imports.
         /// </summary>
@@ -395,6 +400,27 @@ public bool EnableWarningOnCustomBuildEvent
             }
         }
 
+        private bool? _isBinaryFormatterSerializationAllowed;
+        public bool IsBinaryFormatterSerializationAllowed
+        {
+            get
+            {
+                if (!_isBinaryFormatterSerializationAllowed.HasValue)
+                {
+#if RUNTIME_TYPE_NETCORE
+                    AppContext.TryGetSwitch("System.Runtime.Serialization.EnableUnsafeBinaryFormatterSerialization",
+                        out bool enabled);
+                    _isBinaryFormatterSerializationAllowed = enabled;
+#else
+                    _isBinaryFormatterSerializationAllowed = true;
+#endif
+                }
+
+                return _isBinaryFormatterSerializationAllowed.Value;
+            }
+        }
+
+
         private static bool? ParseNullableBoolFromEnvironmentVariable(string environmentVariable)
         {
             var value = Environment.GetEnvironmentVariable(environmentVariable);

src/Shared/TaskHostTaskComplete.cs

@@ -1,4 +1,4 @@
-// Licensed to the .NET Foundation under one or more agreements.
+// Licensed to the .NET Foundation under one or more agreements.
 // The .NET Foundation licenses this file to you under the MIT license.
 
 using System;
@@ -245,6 +245,9 @@ public void Translate(ITranslator translator)
             translator.TranslateDictionary(ref _buildProcessEnvironment, StringComparer.OrdinalIgnoreCase);
 #if FEATURE_REPORTFILEACCESSES
             translator.Translate(ref _fileAccessData);
+#else
+            bool hasFileAccessData = false;
+            translator.Translate(ref hasFileAccessData);
 #endif
         }
 

src/Tasks/Copy.cs

@@ -285,7 +285,10 @@ private void LogAlwaysRetryDiagnosticFromResources(string messageResourceName, p
                 MakeFileWriteable(destinationFileState, true);
             }
 
-            if (ChangeWaves.AreFeaturesEnabled(ChangeWaves.Wave17_8) && destinationFileState.FileExists && !destinationFileState.IsReadOnly)
+            if (ChangeWaves.AreFeaturesEnabled(ChangeWaves.Wave17_8) &&
+                Traits.Instance.EscapeHatches.CopyWithoutDelete != true &&
+                destinationFileState.FileExists &&
+                !destinationFileState.IsReadOnly)
             {
                 FileUtilities.DeleteNoThrow(destinationFileState.Name);
             }