[6.0][Concurrency] Stage in new Async{Throwing}Stream.init(unfolding:) errors as warnings.
#73360
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…rrors as warnings. Marking the closure parameter to these inits as `@Sendable` changed the inferred isolation of closure arguments in actor-isolated contexts, which caused new effects checker errors when accessing isolated properties and methods without `await`. Mark these `init`s as `@preconcurrency`, and fix the effects checker to downgrade those errors to warnings when the context of the call is `@preconcurrency`. (cherry picked from commit 38cc951)
…Cancel:)`. (cherry picked from commit 2c20902)
(cherry picked from commit 7f5e47e)
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@swift-ci please test |
DougGregor
approved these changes
May 1, 2024
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Async{Throwing}Stream.init(unfolding:)as@Sendablechanged the inferred isolation of closure arguments in actor-isolated contexts, which caused new effects checker errors when accessing isolated properties and methods withoutawait. Mark theseinits as@preconcurrency, and fix the effects checker to downgrade those errors to warnings when the context of the call is@preconcurrency.Async{Throwing}Stream.init(unfolding:)errors as warnings. #73310