constructing an object of class type X with a metatype value must use a 'required' initializer #71874
Description
Description
The following code can compile on Darwin platform but on Linux platform we will get a compiler error.
swift build
Building for debugging...
DemoKit.swift:8:16: error: constructing an object of class type 'Delegate' with a metatype value must use a 'required' initializer
return Delegate()
^~~~~~~~
Foundation.NSObject:2:12: note: selected non-required initializer 'init()'
public init()
^
error: fatalError
Reproduction
Run swift package init to add a new empty package. And then update the main file to the following code.
import Foundation
class Box<Delegate: NSObject> {
var delegate: NSObject {
return Delegate()
}
}Expected behavior
Compile success on Linux.
Environment
swiftc --version
Swift version 5.9.2 (swift-5.9.2-RELEASE)
Target: aarch64-unknown-linux-gnu
uname -a
Linux ubuntu-2204 6.5.13-orbstack-00122-g57b8027e2387 #1 SMP Tue Feb 6 07:48:26 UTC 2024 aarch64 aarch64 aarch64 GNU/Linux
Additional information
Forums discussion: https://forums.swift.org/t/nsobject-related-compile-issue-on-linux/70266/8