[swift-users] Swift 3 Whole Module Optimization Issue

[Joe Groff]

> On Dec 21, 2016, at 7:08 PM, Jun Zhang via swift-users <swift-users at swift.org> wrote:
> 
> Hi, everyone.
>    I think I found a swift 3 whole module optimization issue. The code below, when building with release configuration and running on an iOS 10 real device, will always causes a crash.
> 
> import UIKit
> class ViewController: UIViewController {
>     override func viewDidLoad() {
>         super.viewDidLoad()
>         // Do any additional setup after loading the view.
>         super.viewDidLoad()
>         
>         let orderby = "time"
>         let url = "http://www.sample.com/api/index.php?\(orderby)"
>         
>         Log("Request url: \(url)")
>         
>         if let url = URL(string: url) {
>             let request = URLRequest(url: url)
>             print(request)
>         }
>     }
>     override func didReceiveMemoryWarning() {
>         super.didReceiveMemoryWarning()
>         // Dispose of any resources that can be recreated.
>     }
> 
> }
> func Log(_ log: String) {
>     //    NSLog("%@", log)
> }
> 
> You can see the attachment for more detail info.
> Or if you use github, this is the repo: 
> https://github.com/zaczh/Swift3ClosureDemo​
>  Swift3ClosureDemo-master.zip
> ​
Thanks for the report! Please file it on bugs.swift.org if you have a moment.

-Joe