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[SR-8815] Adding protocol restriction causes crash #51323

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swift-ci opened this issue Sep 21, 2018 · 1 comment
Closed

[SR-8815] Adding protocol restriction causes crash #51323

swift-ci opened this issue Sep 21, 2018 · 1 comment
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bug A deviation from expected or documented behavior. Also: expected but undesirable behavior.

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@swift-ci
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Previous ID SR-8815
Radar None
Original Reporter Jessy (JIRA User)
Type Bug
Status Resolved
Resolution Duplicate

Attachment: Download

Environment

Xcode 10

Additional Detail from JIRA
Votes 0
Component/s
Labels Bug
Assignee None
Priority Medium

md5: 78304f389b1b66c0bd52b5c641280107

duplicates:

  • SR-5581 Proper support for protocol 'where' clause with constraints on 'Self'

Issue Description:

I added a "where Self:" clause to a protocol, for clarity, and it causes crashing.

Got to `

private protocol DateFormatter

`

and change it to

`private protocol DateFormatter where Self: Formatter {`

Then try running the tests. Crash.
@belkadan
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Superclass constraints on protocols don't really work in Swift 4.2, though they will in 5. @slavapestov, do you have a designated dup for these?

@swift-ci swift-ci transferred this issue from apple/swift-issues Apr 25, 2022
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bug A deviation from expected or documented behavior. Also: expected but undesirable behavior.
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@belkadan @swift-ci