Addrange on immutableArray creates a new ImmutableArray

The buildonlydiagnostics don't get evaluated because of this.
dotnet · Aug 2, 2023 · e28bf9e · e28bf9e
1 parent b3dc95e
commit e28bf9e
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/Features/LanguageServer/Protocol/Features/CodeFixes/CodeFixService.cs b/src/Features/LanguageServer/Protocol/Features/CodeFixes/CodeFixService.cs
@@ -113,7 +113,7 @@ public async Task<FirstFixResult> GetMostSevereFixAsync(
             }
 
             var buildOnlyDiagnosticsService = document.Project.Solution.Services.GetRequiredService<IBuildOnlyDiagnosticsService>();
-            allDiagnostics.AddRange(buildOnlyDiagnosticsService.GetBuildOnlyDiagnostics(document.Id));
+            allDiagnostics = allDiagnostics.AddRange(buildOnlyDiagnosticsService.GetBuildOnlyDiagnostics(document.Id));
 
             var text = await document.GetValueTextAsync(cancellationToken).ConfigureAwait(false);
             var spanToDiagnostics = ConvertToMap(text, allDiagnostics);