Suppress trimming warnings in source-generated code

simonrozsival · Jan 29, 2024 · abb35ee · abb35ee
1 parent bd67960
commit abb35ee
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Showing 2 changed files with 10 additions and 0 deletions.
diff --git a/src/Controls/src/Build.Tasks/XamlCTask.cs b/src/Controls/src/Build.Tasks/XamlCTask.cs
@@ -271,6 +271,15 @@ public override bool Execute(out IList<Exception> thrownExceptions)
 								LoggingHelper.LogMessage(Low, e.StackTrace);
 								continue;
 							}
+							if (initComp.HasCustomAttributes)
+							{
+								var suppressMessageAttribute = initComp.CustomAttributes.FirstOrDefault(ca => ca.AttributeType.FullName == "System.Diagnostics.CodeAnalysis.UnconditionalSuppressMessageAttribute");
+								if (suppressMessageAttribute != null)
+								{
+									LoggingHelper.LogMessage(Low, $"{new string(' ', 6)}Removing UnconditionalSuppressMessageAttribute from InitializeComponent()");
+									initComp.CustomAttributes.Remove(suppressMessageAttribute);
+								}
+							}
 							if (Type != null)
 								InitCompForType = initComp;
 

diff --git a/src/Controls/src/SourceGen/CodeBehindGenerator.cs b/src/Controls/src/SourceGen/CodeBehindGenerator.cs
@@ -209,6 +209,7 @@ static void GenerateXamlCodeBehind(ProjectItem projItem, Compilation compilation
 
 			//initializeComponent
 			sb.AppendLine($"\t\t[global::System.CodeDom.Compiler.GeneratedCode(\"Microsoft.Maui.Controls.SourceGen\", \"1.0.0.0\")]");
+			sb.AppendLine($"\t\t[global::System.Diagnostics.CodeAnalysis.UnconditionalSuppressMessage(\"Trimming\", \"IL2026\", Justification = \"Source-generated code will be replaced by XamlC in Release builds.\")]");
 
 			// add MemberNotNull attributes
 			if (namedFields != null)