[6.2][Concurrency] Downgrade isolated conformances to SendableMetatype protocols to a warning for implicitly @preconcurrency protocols.
#83138
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protocols to a warning for implicitly `@preconcurrency` protocols. (cherry picked from commit 4b50238)
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@swift-ci please test |
DougGregor
approved these changes
Jul 17, 2025
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SendableMetatype. This error follows the standard@preconcurrencydowngrade so thatSendableMetatypeannotations can be retroactively added to protocols, but that downgrade mechanism did not account for implicitly@preconcurrencyprotocols, including all protocols imported from Objective-C. This change adds a minor adjustment to the downgrade logic for this error message.SendableMetatype-conforming protocols. Isolated conformances are a new feature in 6.2 so this does not impact any existing code.SendableMetatypeprotocols to a warning for implicitly@preconcurrencyprotocols. #83136