[Concurrency] Stage in new Async{Throwing}Stream.init(unfolding:) errors as warnings.
#73310
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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`.
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@swift-ci please smoke test |
hborla
commented
Apr 27, 2024
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@swift-ci please smoke test |
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Marking the closure parameter to these inits 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.Note that this PR builds on #73308
Resolves: rdar://127145741, rdar://126929825