Xcode 10.2 compiler optimization problem

compiler_optimization_problems.swift

//
//  ViewController.swift
//  Enums
//
//  Created by Jonas Ullström on 2019-03-28.
//  Copyright © 2019 ullstmr. All rights reserved.
//

import UIKit

class ViewController: UIViewController {

    var enum1: SomeEnum = .standard
    var enum2: SomeEnum2 = .standard
    
    var valueEnum1: Bool!
    var valueEnum2: Bool!

    var log = ""
    
    override func viewDidLoad() {
        super.viewDidLoad()
        let value1 = enum1.someBool
        valueEnum1 = value1
        log.append("let value1=\(value1)\n")
        
        let value2 = enum2.someBool
        valueEnum2 = value2
        log.append("let value2=\(value2)\n")
    }

    
    override func viewDidAppear(_ animated: Bool) {
        super.viewDidAppear(animated)
        
        let str = """
        Actual
        valueEnum1=\(valueEnum1!)
        valueEnum2=\(valueEnum2!)
        
        Log
        \(log)
        """
        
        let alert = UIAlertController(title: str, message: nil, preferredStyle: .alert)
        self.present(alert, animated: true, completion: nil)
    }
}


enum SomeEnum {
    
    case
    value(defaultUnknownInnerValue: UIStatusBarStyle),
    standard,
    somethingElse

    var someBool: Bool {
        switch self {
        case .somethingElse:
            return false
        default:
            return true
        }
    }
}

enum InnerEnum {
    case a
    case b
}

enum SomeEnum2 {
    
    case
    value(enumInnerValue: InnerEnum),
    standard,
    somethingElse
    
    var someBool: Bool {
        switch self {
        case .somethingElse:
            return false
        default:
            return true
        }
    }
}