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@swift-5.10 @swift-5.9.2 -enable-experimental-feature StrictConcurrency class Super { } @MainActor final class Sub: Super { }
swift510 BOT 4/1/2024 3:39 PM
<stdin>:6:13: warning: main actor-isolated class 'Sub' has different actor isolation from nonisolated superclass 'Super'; this is an error in Swift 6 final class Sub: Super { ^