Crash on iOS11/12

[zzzzzyijie]

it will crash on iOS11/12
because of this code:

version: 6.18.0
#if swift(>=5.5)
@available(iOS 13.0, macOS 10.15, tvOS 13.0, watchOS 6.0, *)
public extension Guarantee {
func async() async -> T {
await withCheckedContinuation { continuation in
done { value in
continuation.resume(returning: value)
}
}
}
}

@available(iOS 13.0, macOS 10.15, tvOS 13.0, watchOS 6.0, *)
public extension Promise {
func async() async throws -> T {
try await withCheckedThrowingContinuation { continuation in
done { value in
continuation.resume(returning: value)
}.catch { error in
continuation.resume(throwing: error)
}
}
}
}
#endif

[zzzzzyijie]

verson: 6.18.1
Xcode: 13.2

it will crash too!! on iOS11/12...

#if swift(>=5.5)
#if canImport(_Concurrency)
@available(iOS 13.0, macOS 10.15, tvOS 13.0, watchOS 6.0, *)
public extension Guarantee {
func async() async -> T {
await withCheckedContinuation { continuation in
done { value in
continuation.resume(returning: value)
}
}
}
}

@available(iOS 13.0, macOS 10.15, tvOS 13.0, watchOS 6.0, *)
public extension Promise {
func async() async throws -> T {
try await withCheckedThrowingContinuation { continuation in
done { value in
continuation.resume(returning: value)
}.catch { error in
continuation.resume(throwing: error)
}
}
}
}
#endif
#endif

[RomanPodymov]

Hello @zzzzzyijie
Please provide more details.

[isaac-weisberg]

What does the crash say? Something generic like EXC_BAD_ACCESS or something more specific?