fixed checks

src/OpenTelemetry.Instrumentation.AspNetCore/Implementation/HttpInListener.cs

@@ -59,12 +59,13 @@ internal class HttpInListener : ListenerHandler
     private const string UnknownHostName = "UNKNOWN-HOST";
 
     private static readonly Func<HttpRequest, string, IEnumerable<string>> HttpRequestHeaderValuesGetter = (request, name) => request.Headers[name];
+    private static readonly PropertyFetcher<Exception> StopExceptionFetcher = new("Exception");
+
 #if !NET6_0_OR_GREATER
     private readonly PropertyFetcher<object> beforeActionActionDescriptorFetcher = new("actionDescriptor");
     private readonly PropertyFetcher<object> beforeActionAttributeRouteInfoFetcher = new("AttributeRouteInfo");
     private readonly PropertyFetcher<string> beforeActionTemplateFetcher = new("Template");
 #endif
-    private static readonly PropertyFetcher<Exception> StopExceptionFetcher = new("Exception");
     private readonly AspNetCoreInstrumentationOptions options;
     private readonly bool emitOldAttributes;
     private readonly bool emitNewAttributes;
@@ -433,7 +434,9 @@ public void OnException(Activity activity, object payload)
         // See https://github.com/dotnet/aspnetcore/blob/690d78279e940d267669f825aa6627b0d731f64c/src/Hosting/Hosting/src/Internal/HostingApplicationDiagnostics.cs#L252
         // and https://github.com/dotnet/aspnetcore/blob/690d78279e940d267669f825aa6627b0d731f64c/src/Middleware/Diagnostics/src/DeveloperExceptionPage/DeveloperExceptionPageMiddlewareImpl.cs#L174
         // this makes sure that top-level properties on the payload object are always preserved.
+#if NET6_0_OR_GREATER
         [UnconditionalSuppressMessage("Trimming", "IL2026", Justification = "The event source guarantees that top level properties are preserved")]
+#endif
         static bool TryFetchException(object payload, out Exception exc)
         {
             if (!StopExceptionFetcher.TryFetch(payload, out exc) || exc == null)

src/OpenTelemetry.Instrumentation.GrpcNetClient/Implementation/GrpcClientDiagnosticListener.cs

@@ -235,7 +235,9 @@ public void OnStopActivity(Activity activity, object payload)
 
         // See https://github.com/grpc/grpc-dotnet/blob/ff1a07b90c498f259e6d9f4a50cdad7c89ecd3c0/src/Grpc.Net.Client/Internal/GrpcCall.cs#L1180-L1183
         // this makes sure that top-level properties on the payload object are always preserved.
+#if NET6_0_OR_GREATER
         [UnconditionalSuppressMessage("Trimming", "IL2026", Justification = "The event source guarantees that top level properties are preserved")]
+#endif
         static bool TryFetchResponse(object payload, out HttpResponseMessage response)
         {
             if (StopRequestFetcher.TryFetch(payload, out response) && response != null)