CA1810 Initialize reference type static fields inline

eng/CodeAnalysis.ruleset

@@ -85,7 +85,7 @@
     <Rule Id="CA1802" Action="Info" />             <!-- Use literals where appropriate --> 
     <Rule Id="CA1805" Action="Info" />             <!-- Do not initialize unnecessarily --> 
     <Rule Id="CA1806" Action="None" />
-    <Rule Id="CA1810" Action="Info" />             <!-- Initialize reference type static fields inline --> 
+    <Rule Id="CA1810" Action="Warning" />          <!-- Initialize reference type static fields inline --> 
     <Rule Id="CA1812" Action="None" />             <!-- Avoid uninstantiated internal classes --> 
     <Rule Id="CA1814" Action="None" />
     <Rule Id="CA1815" Action="None" />

src/Build/BackEnd/Components/RequestBuilder/IntrinsicTasks/ItemGroupLoggingHelper.cs

@@ -41,7 +41,9 @@ internal static class ItemGroupLoggingHelper
         /// to materialize the Message as that's a declaration assembly. We inject the logic
         /// here.
         /// </summary>
+#pragma warning disable CA1810 // Initialize reference type static fields inline
         static ItemGroupLoggingHelper()
+#pragma warning restore CA1810 // Initialize reference type static fields inline
         {
             BuildEventArgs.ResourceStringFormatter = ResourceUtilities.FormatResourceStringIgnoreCodeAndKeyword;
             TaskParameterEventArgs.MessageGetter = GetTaskParameterText;

src/Build/Evaluation/ProjectRootElementCache.cs

@@ -69,20 +69,21 @@ internal class ProjectRootElementCache : ProjectRootElementCacheBase
         /// If this number is increased much higher, the datastructure may
         /// need to be changed from a linked list, since it's currently O(n).
         /// </remarks>
-        private static readonly int s_maximumStrongCacheSize = 200;
+        private static readonly int s_maximumStrongCacheSize =
+            Convert.ToInt32(Environment.GetEnvironmentVariable("MSBUILDPROJECTROOTELEMENTCACHESIZE") ?? "200", NumberFormatInfo.InvariantInfo);
 
         /// <summary>
         /// Whether the cache should log activity to the Debug.Out stream
         /// </summary>
-        private static bool s_debugLogCacheActivity;
+        private static bool s_debugLogCacheActivity = Environment.GetEnvironmentVariable("MSBUILDDEBUGXMLCACHE") == "1";
 
         /// <summary>
         /// Whether the cache should check file content for cache entry invalidation.
         /// </summary>
         /// <remarks>
         /// Value shall be true only in case of testing. Outside QA tests it shall be false.
         /// </remarks>
-        private static bool s_сheckFileContent;
+        private static bool s_сheckFileContent = !string.IsNullOrEmpty(Environment.GetEnvironmentVariable("MSBUILDCACHECHECKFILECONTENT"));
 
 #if DEBUG
         /// <summary>
@@ -119,24 +120,6 @@ internal class ProjectRootElementCache : ProjectRootElementCacheBase
         /// </summary>
         private Object _locker = new Object();
 
-        /// <summary>
-        /// Static constructor to choose cache size.
-        /// </summary>
-        static ProjectRootElementCache()
-        {
-            // Configurable in case a customer has related perf problems after shipping and so that
-            // we can measure different values for perf easily.
-            string userSpecifiedSize = Environment.GetEnvironmentVariable("MSBUILDPROJECTROOTELEMENTCACHESIZE");
-            if (!String.IsNullOrEmpty(userSpecifiedSize))
-            {
-                // Not catching as this is an undocumented setting
-                s_maximumStrongCacheSize = Convert.ToInt32(userSpecifiedSize, NumberFormatInfo.InvariantInfo);
-            }
-
-            s_debugLogCacheActivity = Environment.GetEnvironmentVariable("MSBUILDDEBUGXMLCACHE") == "1";
-            s_сheckFileContent = !String.IsNullOrEmpty(Environment.GetEnvironmentVariable("MSBUILDCACHECHECKFILECONTENT"));
-        }
-
         /// <summary>
         /// Creates an empty cache.
         /// </summary>

src/MSBuild/XMake.cs

@@ -124,7 +124,9 @@ public enum ExitType
         /// <summary>
         /// Static constructor
         /// </summary>
+#pragma warning disable CA1810 // Initialize reference type static fields inline
         static MSBuildApp()
+#pragma warning restore CA1810 // Initialize reference type static fields inline
         {
             try
             {

src/Shared/ExceptionHandling.cs

@@ -32,12 +32,7 @@ namespace Microsoft.Build.Shared
     /// </summary>
     internal static class ExceptionHandling
     {
-        private static readonly string s_debugDumpPath;
-
-        static ExceptionHandling()
-        {
-            s_debugDumpPath = GetDebugDumpPath();
-        }
+        private static readonly string s_debugDumpPath = GetDebugDumpPath();
 
         /// <summary>
         /// Gets the location of the directory used for diagnostic log files.

src/Shared/FrameworkLocationHelper.cs

@@ -374,17 +374,11 @@ private static readonly (Version, Version)[,] s_explicitFallbackRulesForPathToDo
        };
 #endif // FEATURE_WIN32_REGISTRY
 
-        private static readonly IReadOnlyDictionary<Version, DotNetFrameworkSpec> s_dotNetFrameworkSpecDict;
-        private static readonly IReadOnlyDictionary<Version, VisualStudioSpec> s_visualStudioSpecDict;
+        private static readonly IReadOnlyDictionary<Version, DotNetFrameworkSpec> s_dotNetFrameworkSpecDict = s_dotNetFrameworkSpecs.ToDictionary(spec => spec.Version);
+        private static readonly IReadOnlyDictionary<Version, VisualStudioSpec> s_visualStudioSpecDict = s_visualStudioSpecs.ToDictionary(spec => spec.Version);
 
 #endregion // Static member variables
 
-        static FrameworkLocationHelper()
-        {
-            s_dotNetFrameworkSpecDict = s_dotNetFrameworkSpecs.ToDictionary(spec => spec.Version);
-            s_visualStudioSpecDict = s_visualStudioSpecs.ToDictionary(spec => spec.Version);
-        }
-
 #region Static properties
 
         internal static string PathToDotNetFrameworkV11

src/Shared/MSBuildNameIgnoreCaseComparer.cs

@@ -20,16 +20,7 @@ internal class MSBuildNameIgnoreCaseComparer : IConstrainedEqualityComparer<stri
         /// <summary>
         /// The processor architecture on which we are running, but default it will be x86
         /// </summary>
-        private static readonly NativeMethodsShared.ProcessorArchitectures s_runningProcessorArchitecture;
-
-        /// <summary>
-        /// We need a static constructor to retrieve the running ProcessorArchitecture that way we can
-        /// avoid using optimized code that will not run correctly on IA64 due to alignment issues
-        /// </summary>
-        static MSBuildNameIgnoreCaseComparer()
-        {
-            s_runningProcessorArchitecture = NativeMethodsShared.ProcessorArchitecture;
-        }
+        private static readonly NativeMethodsShared.ProcessorArchitectures s_runningProcessorArchitecture = NativeMethodsShared.ProcessorArchitecture;
 
         /// <summary>
         /// The default immutable comparer instance.

src/Shared/TypeLoader.cs

@@ -21,7 +21,7 @@ internal class TypeLoader
         /// <summary>
         /// AssemblyContextLoader used to load DLLs outside of msbuild.exe directory
         /// </summary>
-        private static readonly CoreClrAssemblyLoader s_coreClrAssemblyLoader;
+        private static readonly CoreClrAssemblyLoader s_coreClrAssemblyLoader = new CoreClrAssemblyLoader();
 #endif
 
         /// <summary>
@@ -39,13 +39,6 @@ internal class TypeLoader
         /// </summary>
         private Func<Type, object, bool> _isDesiredType;
 
-#if FEATURE_ASSEMBLYLOADCONTEXT
-        static TypeLoader()
-        {
-            s_coreClrAssemblyLoader = new CoreClrAssemblyLoader();
-        }
-#endif
-
         /// <summary>
         /// Constructor.
         /// </summary>