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[SR-14539] Swift 5.5 errors on enum cases with associated values being marked available #56891

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adam-fowler opened this issue Apr 27, 2021 · 2 comments
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[SR-14539] Swift 5.5 errors on enum cases with associated values being marked available #56891

adam-fowler opened this issue Apr 27, 2021 · 2 comments
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@adam-fowler
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Previous ID SR-14539
Radar rdar://problem/77222685
Original Reporter @adam-fowler
Type Improvement
Status Resolved
Resolution Done
Additional Detail from JIRA
Votes 7
Component/s
Labels Improvement
Assignee None
Priority Medium

md5: 1f2e679814542971c6cf307547fbd455

Issue Description:

With latest swift, this will not compile anymore

public enum TSTLSOptions {
    @available(macOS 10.14, iOS 12, tvOS 12, *)
    case some(NWProtocolTLS.Options)
    case none
}

It used to.

I believe the change that broke this is 511ada4

From the comments in the change it seems to imply this would not be an issue if the associated value was a class reference or @Frozen. Is it possible to not have this error in those cases?

This was found in swift snapshot 2021-04-18
@typesanitizer
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@slavapestov
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This is working as intended. We do not support conditionally-available enum cases. You either need to make the entire enum @available, or bump the deployment target.

@swift-ci swift-ci transferred this issue from apple/swift-issues Apr 25, 2022
This issue was closed.
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@slavapestov @typesanitizer @adam-fowler