fix

Author: josefpihrt

src/Analyzers/CSharp/Analysis/ImplementExceptionConstructorsAnalyzer.cs

@@ -67,6 +67,9 @@ private static void AnalyzeNamedType(SymbolAnalysisContext context, INamedTypeSy
 
         var classDeclaration = (ClassDeclarationSyntax)symbol.GetSyntax(context.CancellationToken);
 
+        if (classDeclaration.ParameterList is not null)
+            return;
+
         DiagnosticHelpers.ReportDiagnostic(context, DiagnosticRules.ImplementExceptionConstructors, classDeclaration.Identifier);
     }
 

src/Tests/Analyzers.Tests/RCS1194ImplementExceptionConstructorsTests.cs

@@ -38,6 +38,16 @@ public C(string message, Exception innerException) : base(message, innerExceptio
     {
     }
 }
+");
+    }
+
+    [Fact, Trait(Traits.Analyzer, DiagnosticIdentifiers.ImplementExceptionConstructors)]
+    public async Task Test_PrimaryConstructor()
+    {
+        await VerifyNoDiagnosticAsync(@"
+using System;
+
+class MyException (string message) : Exception(message);
 ");
     }
 }