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[SR-2018] Compiler should not allow final on functions defined in protocol extensions. #44628

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swift-ci opened this issue Jul 7, 2016 · 0 comments
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bug A deviation from expected or documented behavior. Also: expected but undesirable behavior.

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swift-ci commented Jul 7, 2016

Previous ID SR-2018
Radar None
Original Reporter calebd (JIRA User)
Type Bug
Status Resolved
Resolution Duplicate
Environment
  • Swift 3.0

  • Xcode 8.0 beta 2

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

md5: 304d9ddf7a9e26c34f1f552d894ac527

duplicates:

  • SR-1762 Using "final" keyword in protocol extension doesn't prevent overriding

Issue Description:

The compiler allows final to be applied to functions defined in protocol extensions. final has no effect in this case and the compiler should not give the false sense of assurance that the function cannot be overridden.

protocol SomeProtocol {}

extension SomeProtocol {

    // This should result in an error but currently does not.
    final func thing()
}
@swift-ci swift-ci transferred this issue from apple/swift-issues Apr 25, 2022
This issue was closed.
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Labels
bug A deviation from expected or documented behavior. Also: expected but undesirable behavior.
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