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A completion-handler method carrying an availability attribute was skipped when wiring the rename attribute that points to its async alternative, so an async @objc @implementation member could not match its completion-handler requirement and no ObjC thunk was generated as a result. This narrows the guard to methods that already carry a rename, checking their availability attributes syntactically. Resolving the async alternative here would trigger name lookup and re-enter member loading while the nominal is still importing, corrupting its member lookup table.
17 lines
854 B
Swift
17 lines
854 B
Swift
// RUN: %target-typecheck-verify-swift -verify-ignore-unrelated -import-objc-header %S/Inputs/objc_implementation_async_availability.h -enable-experimental-feature ObjCImplementation -target %target-stable-abi-triple -Xcc -Wno-nullability-completeness
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// REQUIRES: objc_interop
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// REQUIRES: swift_feature_ObjCImplementation
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// An imported Objective-C completion-handler method that carries an
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// availability attribute must still expose its async alternative. Otherwise an
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// async member of an '@objc @implementation' extension fails to match the
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// completion-handler requirement, no ObjC thunk is generated, and calling the
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// method through the ObjC runtime crashes with "unrecognized selector".
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@objc @implementation extension WidgetStore {
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@available(SwiftStdlib 5.1, *)
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public func fetchWidgets() async -> [any Widget] {
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return []
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}
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}
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