autofill SMS code webview crash https://openradar.appspot.com/7428013

autofill-sms-code-webview-crash.swift

func swizzleReplacingCharacters() {
        let originalMethod = class_getInstanceMethod(
            NSString.self, #selector(NSString.replacingCharacters(in:with:)))

        let swizzledMethod = class_getInstanceMethod(
            NSString.self, #selector(NSString.swizzledReplacingCharacters(in:with:)))

        guard let original = originalMethod, let swizzled = swizzledMethod else {
            return
        }

        method_exchangeImplementations(original, swizzled)
}

extension NSString {
    @objc
    func swizzledReplacingCharacters(in range: NSRange, with replacement: String) -> String {
        /// By simply calling the original method the nil argument is handled. :shrug: :ok:
        ///
        /// (yes, we will call the original method and not ourselves even though it looks like it,
        /// because the methods have been swapped.)
        return self.swizzledReplacingCharacters(in: range, with: replacement)
    }
}