Example of Future that will crash when it resolves, if handleEvents capture's self and self is de-allocated

test.swift

import Foundation
import Combine

var dispatchGroup = DispatchGroup()
dispatchGroup.enter()

DispatchQueue.global().asyncAfter(deadline: .now() + 3, execute: {
    dispatchGroup.leave()

})

class AClass {
    var subscriptions: Set<AnyCancellable> = []
    init() {
        Future<Void, Never> { resolve in
            DispatchQueue.global().asyncAfter(deadline: .now() + 2, execute: {
                print("resolving")
                resolve(.success(()))
                print("resolved")
            })
        }
        .handleEvents(receiveCancel: {
//I need to perform cleanup work here if the self is deallocated
            print("received cancel \(self)")
            self.aFunction()
        })
        .sink { _ in
        }.store(in: &subscriptions)
    }

    deinit {
        print("AClass deinit")
    }

    func aFunction() {}
}

var aClass: AClass? = AClass()
aClass = nil


dispatchGroup.wait()