The following code crashes in XCode when run on a 'Release' scheme to crash (on any iDevice).It crashes with EXC_BAD_ACCESS(code=EXC_I386_GPFLT) trying to do a 'swift_arrayDestroy' with Xcode on line 19.Note : It does NOT crash when running on a 'Debug' scheme.+) Can anyone else reproduce this (just cut an paste -> Run -> click a few times on the RED Box that appears on the screen).+) Any ideas if this is a program error or an Xcode Release optimisation bug?+) Does anyone know if '@objc func touchDown(_ sender: MY_UIButton)' is safe?Should I use 'Any' .. and then attempt to cast to 'MY_UIButton'.Thanks,AJ.import UIKit var g_but = MY_UIButton(frame: CGRect(x: 100, y: 100,width: 200,height: 200)) let g_false = false let opt_zero : Int? = 0 class EMPTY_CLASS {} let g_empty_arr : [EMPTY_CLASS] = [] class ViewController: UIViewController { override func viewDidLoad() { super.viewDidLoad() g_but.backgroundColor = UIColor.red view.addSubview(g_but) g_but.addTarget(g_but,action: #selector(MY_U
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