Fix AttributeUsage.AllowMultiple not inherited for C#-defined attributes#19315
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edgarfgp wants to merge 3 commits intodotnet:mainfrom
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Fix AttributeUsage.AllowMultiple not inherited for C#-defined attributes#19315edgarfgp wants to merge 3 commits intodotnet:mainfrom
edgarfgp wants to merge 3 commits intodotnet:mainfrom
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…tes (dotnet#17107) The F# compiler was not walking the inheritance chain for IL-imported (C#) attribute types when checking AllowMultiple. The supersOfTyconRef function only used tcaug_super, which is not populated for IL types. This fix parameterizes TryFindAttributeUsageAttribute with a getSuper resolver function. The caller in PostInferenceChecks now passes a resolver using GetSuperTypeOfType, which correctly handles both F# and IL-imported types via ILTypeDef.Extends.
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❗ Release notes required
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# Conflicts: # docs/release-notes/.FSharp.Compiler.Service/10.0.300.md
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Description
The F# compiler was not walking the inheritance chain for IL-imported (C#) attribute types when checking AllowMultiple. The
supersOfTyconReffunction only usedtcaug_super, which is not populated for IL types.This fix parameterizes
TryFindAttributeUsageAttributewith a getSuper resolver function. The caller in PostInferenceChecks now passes a resolver using GetSuperTypeOfType, which correctly handles both F# and IL-imported types via ILTypeDef.Extends.Fixes #17107
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