"Command SwiftCompile failed with a nonzero exit code" error by [Product] - [Archive]

The information here is indicative of a crash in the Swift complier. That should never happen, so the first thing you should do is file a bug report with as much information as possible, ideally including a small reduced example of your project that reproduces this error for our teams to look at. Once you file that bug report, please post the FB number here for posterity.

This log has some hints for you that can help you find a workaround. Take a look at this:

While running pass #985712 SILFunctionTransform "DeadArgSignatureOpt" 
on SILFunction "@$s15Petty_treasurer12PhotosViewerC8onReturnyyF". 
for 'onReturn()' (at PhotosViewer.swift:173:1

DeadArgSignatureOpt is a hint that the complier's crash happened while it was running an optimization to remove dead arguments as functions are specialized. And you have the file path, line number, and method onReturn as further clues. What's your code doing on that line? (And all of this is valuable info to add to your bug report!) Try rewriting that code a little bit to achieve the same goal, but the exercise of doing so may help you find a different way to write it that doesn't trip up the compiler in this way.

— Ed Ford,  DTS Engineer

Program including onReturn() is below.

class PhotosViewer: UIViewController {

override func viewDidLoad() {
    
    super.viewDidLoad()
    // ダウン対策
    if newImageDT.count <= page || page < 0 {
        page = newImageDT.count - 1
    }

    initImageView(image1: newImageDT[page])

    if newImageDT.count - 1 > page {
        let rightButton = UIBarButtonItem(title: "button_next".localized, style: UIBarButtonItem.Style.plain, target: self, action: #selector(onNext))
        self.navigationItem.rightBarButtonItem = rightButton
    } else {
        let rightButton = UIBarButtonItem(title: "".localized, style: UIBarButtonItem.Style.plain, target: self, action: #selector(onNext))
        self.navigationItem.rightBarButtonItem = rightButton
    }
    let leftButton = UIBarButtonItem(title: "menu_Return".localized, style: UIBarButtonItem.Style.plain, target: self, action: #selector(onReturn))
    self.navigationItem.leftBarButtonItem = leftButton

    self.navigationItem.title = shotDates[page]
    let cDateTime = cm.datestring(targetDate: Date(), format: "yyyy-MM-dd HH:mm:ss")
    let parm = "checkAt=cast(\"" + cDateTime + "\" as datetime), checkBy=\"" + accountantName + "\" WHERE id = \"" + contract.contID + "\" AND  file_name = \"" + fileNames[page] + "\" AND  checkBy = \"\""
    // 画像確認記録を登録
    let currentPage = page
    db.updateImage(fileName: fileNames[currentPage], parm: parm) { [self] completion in
        if completion == 0 {
            dm.updateImagerecord(fileName: fileNames[currentPage], checkAt: cDateTime, checkBy: accountantName) // 内部データも更新
        }
    }

    let pinchGesture = UIPinchGestureRecognizer()
    pinchGesture.addTarget(self, action: #selector(pinchAction(_:) ) )
    view.addGestureRecognizer(pinchGesture)

    let rotateGesture = UIRotationGestureRecognizer()
    rotateGesture.addTarget(self, action: #selector(rotateAction(_:) ) )
    view.addGestureRecognizer(rotateGesture)
            
    let panOrSwipe = UIPanGestureRecognizer(target: self, action: #selector(didPan(_:)))
    view.addGestureRecognizer(panOrSwipe)

    let tapGesture = UITapGestureRecognizer()
    tapGesture.addTarget(self, action: #selector(tapAction(_:)))
    view.addGestureRecognizer(tapGesture)

    let longPressGesture = UILongPressGestureRecognizer()
    longPressGesture.addTarget(self, action: #selector(longPressAction(_:)))
    view.addGestureRecognizer(longPressGesture)
    
}

〜 〜 〜

@objc func onReturn() {
    page -= 1
    if page > 0 {
        self.loadView()
        self.viewDidLoad()
        return
    } else {

self.navigationController?.popViewController(animated: true) return } }

〜 〜 〜

}

onReturn() is in Line 173.

This file displays images. onReturn() returns the image to the previous one, or returns to the screen it was called from if all images have been returned.

I do not know what is the FB number.

Suddenly, the problem was solved.

What I did was simple, I just changed the function name as follows:

onReturn() -> toReverse()

I don't know the cause, but since the previous reply said the following, I tried the simplest thing to do, which is to change the name, and the problem was solved. Thank you.

"Try rewriting that code a little bit to achieve the same goal"