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[<CompiledName>] attribute applied to only one overload of 2 is not applied at all #19604
Description
Repro steps
Does not work
[<AutoOpen; System.Runtime.CompilerServices.Extension>]
module Microsoft.Extensions.DependencyInjection.OpenIddictCosmosDbExtensions
open System
open System.Runtime.CompilerServices
open System.Runtime.InteropServices
open Microsoft.Extensions.DependencyInjection.Extensions
type OpenIddictCoreBuilder with
[<Extension; CompiledName "UseCosmosDb">]
member builder.UseCosmosDb ([<Optional; DefaultParameterValue false>] storeScopesAndAppsInMemory : bool) = ()
member builder.UseCosmosDb (configuration : Action<OpenIddictCosmosDbBuilder>) = ()Works
[<AutoOpen; System.Runtime.CompilerServices.Extension>]
module Microsoft.Extensions.DependencyInjection.OpenIddictCosmosDbExtensions
open System
open System.Runtime.CompilerServices
open System.Runtime.InteropServices
open Microsoft.Extensions.DependencyInjection.Extensions
type OpenIddictCoreBuilder with
[<Extension; CompiledName "UseCosmosDb">]
member builder.UseCosmosDb ([<Optional; DefaultParameterValue false>] storeScopesAndAppsInMemory : bool) = ()
[<Extension; CompiledName "UseCosmosDb">]
member builder.UseCosmosDb (configuration : Action<OpenIddictCosmosDbBuilder>) = ()Expected behavior
The attribute action is either applied, or a compilation error is returned
Actual behavior
The attribute action is silently ignored
Known workarounds
Use attrute in all the overloads
Related information
Provide any related information (optional):
- Windows 10.0.26200
- .NET 10.0.202
- Visual Studio Insider [11709.129]
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[-][<CompiledName>] attribute applied to only one overload of 2 is not applied at all[/-][+]`[<CompiledName>]` attribute applied to only one overload of 2 is not applied at all[/+]Revert product change; add EmittedIL tests proving [<CompiledName>] w…
Add EmittedIL tests proving [<CompiledName>] works by design on exten…
T-Gro commentedon May 19, 2026
@xperiandri :
I have tested and the attribute application kicks in, that single overload is correctly renamed.
Can you perhaps elaborate on your expectations?
(or if the is more context to your use case, needing a different repro? The repro proving the generated IL is at #19737 )
Warn on inconsistent [<CompiledName>] across extension overloads (#19737
[feature/net11-scouting] Update dependencies from dotnet/arcade (#19910)
xperiandri commentedon Jun 23, 2026
How to track which SDK 10.0.x it comes?
smoothdeveloper commentedon Jun 23, 2026
@xperiandri AFAIU, there is no change in the compiler in #19737, it is only a non regression test, in case the behaviour of the attribute on overloaded methods would come to change.