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The `@MainActor` global actor constraint on a declaration does not carry an inherent ABI impact and therefore use of this constraint should not be limited to OS versions where Swift concurrency is available. Resolves rdar://105610970
21 lines
443 B
Swift
21 lines
443 B
Swift
// RUN: %target-typecheck-verify-swift
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// REQUIRES: concurrency
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// This test is meant to verify that a @MainActor constraint is accepted without
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// any availability restrictions for all targets.
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@MainActor
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struct AlwaysAvailable {}
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@MainActor(unsafe)
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struct AlwaysAvailableUnsafe {}
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@available(SwiftStdlib 5.1, *)
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@MainActor
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struct AvailableSwift5_1 {}
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@available(SwiftStdlib 5.1, *)
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@MainActor(unsafe)
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struct AvailableSwift5_1Unsafe {}
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