test/SILGen/Inputs/UIKit.swift

import Foundation
@_exported import UIKit

public func UIApplicationMain() {}
public func UIApplicationMain(_ argc: Int32,
                              _ argv: UnsafeMutablePointer<UnsafeMutablePointer<Int8>?>!,
                              _ principalClassName: String?,
                              _ delegateClassName: String?) -> Int32 {
  return 0
}