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[SR-10338] Swift 5 regression: initializing NSObject returns wrong instance #52738

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swift-ci opened this issue Apr 8, 2019 · 0 comments
Closed

[SR-10338] Swift 5 regression: initializing NSObject returns wrong instance #52738

swift-ci opened this issue Apr 8, 2019 · 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 Apr 8, 2019

Previous ID SR-10338
Radar None
Original Reporter Leitch (JIRA User)
Type Bug
Status Resolved
Resolution Duplicate
Environment

Xcode 10.2 (10E125)

Apple Swift version 5.0 (swiftlang-1001.0.69.5 clang-1001.0.46.3)
Target: x86_64-apple-darwin18.5.0

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

md5: a36faca35693f268b6a7bf66618ce691

duplicates:

  • SR-10285 Subclass of a class that conforms to a protocol and extends NSObject is not instantiate correctly

Issue Description:

import Cocoa

protocol SwiftInitializeable {
    init()
}

class MyBaseclass: NSObject, SwiftInitializeable {
    required override init() {
        super.init()
    }
}

class MySubclass: MyBaseclass {}

let type: SwiftInitializeable.Type = MySubclass.self
let cls = type.init()

print(cls)

In Xcode 10.1, Swift 4.2 this outputs:

<__lldb_expr_3.MySubclass: 0x7fa617e4df10>

However in Xcode 10.2, both Swift 5 & 4.2 mode it outputs:

<__lldb_expr_1.MyBaseclass: 0x7fa449462aa0>
@swift-ci swift-ci transferred this issue from apple/swift-issues Apr 25, 2022
This issue was closed.
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bug A deviation from expected or documented behavior. Also: expected but undesirable behavior.
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@swift-ci