Add workaround for RequiresPreviewFeatures and regenerate SLE compat suppressions.

Author: jkoritzinsky

Directory.Build.targets

@@ -78,6 +78,8 @@
     <PackageDescription Condition="'$(PackageDescription)' == '' and '$(UseRuntimePackageDisclaimer)' == 'true'">$(RuntimePackageDisclaimer)</PackageDescription>
     <!-- Keep in sync as required by the Packaging SDK in Arcade. -->
     <Description>$(PackageDescription)</Description>
+    <!-- Until we update the TFM to match the Major version, we need to patch in support for RequiresPreviewFeatures -->
+    <GenerateRequiresPreviewFeaturesAttribute Condition="'$(TargetFrameworkMoniker)' == '$(NetCoreAppCurrentTargetFrameworkMoniker)'">true</GenerateRequiresPreviewFeaturesAttribute>
   </PropertyGroup>
 
   <Target Name="ValidateTargetOSLowercase"
@@ -121,7 +123,7 @@
           AfterTargets="ResolveProjectReferences"
           BeforeTargets="FindReferenceAssembliesForReferences"
           Condition="'@(ProjectReference)' != '' and '@(_ResolvedProjectReferencePaths)' != ''">
-    <!-- If we have a ProjectReference to CoreLib, we need to compile against implementation assemblies, 
+    <!-- If we have a ProjectReference to CoreLib, we need to compile against implementation assemblies,
          and ignore architecture mismatches in those implementation assemblies. -->
     <PropertyGroup Condition="@(_ResolvedProjectReferencePaths->AnyHaveMetadataValue('MSBuildSourceProjectFile', '$(CoreLibProject)'))">
       <CompileUsingReferenceAssemblies Condition="'$(CompileUsingReferenceAssemblies)' == ''">false</CompileUsingReferenceAssemblies>

src/libraries/System.Linq.Expressions/src/CompatibilitySuppressions.xml

@@ -97,6 +97,48 @@
     <Left>ref/net8.0/System.Linq.Expressions.dll</Left>
     <Right>lib/net8.0/System.Linq.Expressions.dll</Right>
   </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0016</DiagnosticId>
+    <Target>M:System.Linq.Expressions.Expression.Call(System.Linq.Expressions.Expression,System.String,System.Type[],System.Linq.Expressions.Expression[]):[T:System.Diagnostics.CodeAnalysis.RequiresDynamicCodeAttribute]</Target>
+    <Left>ref/net8.0/System.Linq.Expressions.dll</Left>
+    <Right>lib/net8.0/System.Linq.Expressions.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0016</DiagnosticId>
+    <Target>M:System.Linq.Expressions.Expression.Call(System.Type,System.String,System.Type[],System.Linq.Expressions.Expression[]):[T:System.Diagnostics.CodeAnalysis.RequiresDynamicCodeAttribute]</Target>
+    <Left>ref/net8.0/System.Linq.Expressions.dll</Left>
+    <Right>lib/net8.0/System.Linq.Expressions.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0016</DiagnosticId>
+    <Target>M:System.Linq.Expressions.Expression.ListInit(System.Linq.Expressions.NewExpression,System.Collections.Generic.IEnumerable{System.Linq.Expressions.Expression}):[T:System.Diagnostics.CodeAnalysis.RequiresDynamicCodeAttribute]</Target>
+    <Left>ref/net8.0/System.Linq.Expressions.dll</Left>
+    <Right>lib/net8.0/System.Linq.Expressions.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0016</DiagnosticId>
+    <Target>M:System.Linq.Expressions.Expression.ListInit(System.Linq.Expressions.NewExpression,System.Linq.Expressions.Expression[]):[T:System.Diagnostics.CodeAnalysis.RequiresDynamicCodeAttribute]</Target>
+    <Left>ref/net8.0/System.Linq.Expressions.dll</Left>
+    <Right>lib/net8.0/System.Linq.Expressions.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0016</DiagnosticId>
+    <Target>M:System.Linq.Expressions.Expression.ListInit(System.Linq.Expressions.NewExpression,System.Reflection.MethodInfo,System.Collections.Generic.IEnumerable{System.Linq.Expressions.Expression}):[T:System.Diagnostics.CodeAnalysis.RequiresDynamicCodeAttribute]</Target>
+    <Left>ref/net8.0/System.Linq.Expressions.dll</Left>
+    <Right>lib/net8.0/System.Linq.Expressions.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0016</DiagnosticId>
+    <Target>M:System.Linq.Expressions.Expression.ListInit(System.Linq.Expressions.NewExpression,System.Reflection.MethodInfo,System.Linq.Expressions.Expression[]):[T:System.Diagnostics.CodeAnalysis.RequiresDynamicCodeAttribute]</Target>
+    <Left>ref/net8.0/System.Linq.Expressions.dll</Left>
+    <Right>lib/net8.0/System.Linq.Expressions.dll</Right>
+  </Suppression>
+  <Suppression>
+    <DiagnosticId>CP0016</DiagnosticId>
+    <Target>M:System.Runtime.CompilerServices.CallSite`1.Create(System.Runtime.CompilerServices.CallSiteBinder):[T:System.Diagnostics.CodeAnalysis.RequiresDynamicCodeAttribute]</Target>
+    <Left>ref/net8.0/System.Linq.Expressions.dll</Left>
+    <Right>lib/net8.0/System.Linq.Expressions.dll</Right>
+  </Suppression>
   <Suppression>
     <DiagnosticId>CP0016</DiagnosticId>
     <Target>M:System.Linq.Expressions.Expression.Call(System.Linq.Expressions.Expression,System.String,System.Type[],System.Linq.Expressions.Expression[]):[T:System.Diagnostics.CodeAnalysis.RequiresDynamicCodeAttribute]</Target>
@@ -145,4 +187,4 @@
     <Left>ref/net8.0/System.Linq.Expressions.dll</Left>
     <Right>lib/net8.0/System.Linq.Expressions.dll</Right>
   </Suppression>
-</Suppressions>
+</Suppressions>