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[SR-4681] custom init on nsobject subclass which throws isn't accepted #47258

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swift-ci opened this issue Apr 24, 2017 · 2 comments
Open

[SR-4681] custom init on nsobject subclass which throws isn't accepted #47258

swift-ci opened this issue Apr 24, 2017 · 2 comments
Labels
bug A deviation from expected or documented behavior. Also: expected but undesirable behavior. compiler The Swift compiler in itself feature A feature request or implementation

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@swift-ci
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Previous ID SR-4681
Radar None
Original Reporter chriseidhof (JIRA User)
Type Bug
Environment

Version 8.3.2 (8E2002), default Swift.

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

md5: a37a0cb22a15400855e3e83876122ded

Issue Description:

I have a very simple NSObject subclass which has a custom initializer that throws:

{{final class Test: NSObject {
init() throws {
// custom behavior
super.init()
}
}
}}

The compiler tells me that I should add the override label (I don't think it should). When I do add the override label, it tells me that it's not overriding anything.
@belkadan
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We don't really have a good way to say "I don't want to inherit initializers, but I do want to reuse some of the signatures." A nonoverride kind of keyword would fix that.

@belkadan
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You can work around this in a very silly way by adding another level of base class in between with a dummy initializer that isn't init().

@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. compiler The Swift compiler in itself feature A feature request or implementation
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@belkadan @swift-ci